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[...]Vohburg and Kahla, Germany The topic of replacing a conventional primary clarifier with a mechanical screen has already been the subject of numerous publications. HUBER SE was the first company in Germany to take up this new challenge several years ago. The performance of the plants already installed, their reliable operation and the resulting energy savings in the operation of the wastewater treatment plants are already a success story, as the Vohburg and Kahla projects impressively demonstrate. Vohburg wastewater treatment plant: complete modernisation for energy performance optimisation Vohburg on the Danube is a town in the Upper Bavarian district of Pfaffenhofen an der Ilm. The town lies on the northern border of the district, around 15 kilometres down the Danube from Ingolstadt. The old town centre is framed by the rivers Danube, Little Danube and Paar. The Ilm also flows along the southern edge of the town. Vohburg could therefore be called a ‘four-river town’ The municipality of Vohburg and its neighbouring areas are growing steadily, but unfortunately the capacity of the wastewater treatment plant is not. As a result, it has become necessary to expand the capacity of the Vohburg wastewater treatment plant from 9,000 PE to 14,000 PE. The scope of the refurbishment includes a fundamental conversion of the process management from aerobic to anaerobic sludge stabilisation. One advantage of anaerobic process management is that up to 30% aeration energy can be saved. The costs for the aeration energy of an aerobic sludge stabilised wastewater treatment plant are one of the largest items in a municipality's budget. For wastewater treatment plants, this means that approx. 60% of the total costs are incurred by the aeration energy of the biological treatment stage. An additional advantage of converting to anaerobic digestion is that 50% of the electricity will be produced by the sewage treatment plant itself in future. Many factors are important in order to be able to make this process conversion project a reality. Firstly, the space required for a conventional primary clarifier must be available and secondly, there must be sufficient space to accommodate a digester and a CHP unit. If the wastewater treatment plant does not yet have a sludge dewatering system, a mechanical dewatering system must also be planned. In the Vohburg project, the technical effort required to build a primary clarifier was not economically feasible. The planning engineering company BBI Ingenieure GmbH and the city of Vohburg therefore analysed the possibility of a mechanical alternative to the primary clarifier. However, the use of the HUBER Drum Screen LIQUID to remove suspended solids from the wastewater flow upstream of the biological stage should only be approved if prior tests with a HUBER demonstration plant show that the HUBER Drum Screen LIQUID achieves the required reduction performance. HUBER SE therefore provided a test plant for 3-4 weeks. This trial was supervised by the Nuremberg University of Applied Sciences and a HUBER team. The Drum Screen LIQUID had to compare itself with a competitor's belt screen system on this wastewater treatment plant. As the results showed, the HUBER Drum Screen LIQUID was able to demonstrate clear advantages due to its significantly better reduction performance in terms of filterable solids and COD as well as the operational reliability of the system. Despite the very low concentration of filterable solids, the HUBER solution showed a reduction performance of 70%. And in spite of the sometimes high external water input and a ratio of 50% particulate / 50% dissolved COD, a separation performance of 29% total COD was still achieved. An excellent result under these conditions. The maximum inflow to the Vohburg wastewater treatment plant is 360 m³/h. The HUBER Drum Screen LIQUID installed there is also designed for 360 m³/h and contributes to relieving the biological stage. In concrete terms, this means a reduction in aeration costs of up to 30%. HUBER Disc Thickeners S-DISC are installed on the wastewater treatment plant to process the sludge from the Drum Screen LIQUID. A digester was installed to utilise the thickened sludge for energy recovery. The digested sludge is then dewatered by a HUBER Screw Press Q-PRESS®. Furthermore, it was necessary to integrate a CHP unit which converts the gas yield from the digester into electricity. As already mentioned, the self-generated electricity can be used for own consumption or fed into the public power grid. Commissioning took place at the end of 2019. Reduction of operating costs by 35,000 euros per year At the time of planning, a reduction in operating costs of 35,000 euros/year was expected for this wastewater treatment plant with an expansion stage of 14,000 PE. As the most important component of the overall concept, the HUBER Drum Screen LIQUID has made a significant contribution to the successful energy-efficient refurbishment of the Vohburg wastewater treatment plant. This project impressively demonstrates how the process conversion from aerobic to anaerobic sludge stabilisation can conserve valuable resources, generate financial added value for the wastewater treatment plant operator and at the same time protect the environment. Measures: HUBER Drum Screen LIQUID HUBER Disc Thickener S-DISC Digester incl. CHP HUBER Screw Press Q-PRESS® Benefits: 24 % savings in aeration energy after reaching the expansion stage 50% self-supply of electricity for the wastewater treatment plant (approx. 140,000 kWh/a) 40 % reduction in disposal costs Utilisation of waste heat from CHP for building heating Savings due to reduced cost for purchased electricity and for sludge disposal amount to approx. 80,000 €/year New paths – new opportunities: the energy upgrade of the Kahla wastewater treatment plant Kahla is a small town in the middle part of the Saale river valley, south of Jena. Kahla is the seat of the Südliches Saaletal administrative community for the southern Saale valley, but is not a member of the community itself. Kahla is famous for its porcelain, which has been produced there for over 150 years. The Kahla wastewater treatment plant benefited from a European funding programme. In order to improve the energy efficiency of a wastewater treatment plant, process optimisation measures are often carried out for wastewater treatment plants of 8,000-50,000 PE. For small to medium-sized wastewater treatment plants in particular, this means converting the concept of the aerobic sludge-stabilised wastewater treatment plant originally planned for plant sizes to the new concept of the anaerobic sludge-stabilised wastewater treatment plant. From a size of 50,000 PE, wastewater treatment plants are generally only operated with anaerobic sludge stabilisation anyway. In the Kahla project with a capacity of 15,000 PE, the HUBER Drum Screen LIQUID was integrated into the hydraulic connection line between the grit chamber and aeration via a branch line. For this purpose, an empty basin was used to accommodate the machine. Therefore, no new structure had to be built. Another decisive factor was the higher degree of separation compared to a primary clarifier After all, the wastewater in Kahla is not the conventional type. There is a predominant proportion of soluble COD, which comes from food industry operations. This shifts the ratio between soluble COD and particulate COD in favour of soluble COD. As the design of a primary clarifier is largely determined by the hydraulic load, an unnecessarily large structure must be built to ensure the desired degree of separation of particulate COD (only this can be separated by mechanical-physical processes). This ratio shift plays a subordinate role in the design of an ultra-fine screening system. The local food industry had significantly increased its production capacity, so that an aeration tank enlargement would have been necessary. However, due to the advantages of this technology described above, the necessary aeration tank enlargement could be avoided by installing an ultra-fine screen. This drum screen was planned in such a way that no additional adjustments to the structure were necessary. Only one pipeline into and one pipeline out of the HUBER Drum Screen LIQUID tank was required. An emergency bypass was already in place. HUBER Disc Thickeners S-DISC are installed to process the sludge from the HUBER Drum Screen LIQUID. A 2-phase digester was installed to process the thickened sludge for energy recovery. Furthermore, it was necessary to integrate a gas turbine CHP unit, which converts the gas yield from the digester into electricity. Commissioning took place at the end of 2019. Thanks to the excellent cooperation with the engineering company Arequa, it was possible to develop this extraordinary, innovative and sustainable concept. The citizens will be grateful if these measures for the energy efficiency optimisation of the wastewater treatment plant enable the costs for wastewater charges to be kept stable in the medium term despite rising electricity and sludge disposal prices. Measures: HUBER Drum Screen LIQUID HUBER Disc Thickener S-DISC Digester incl. CHP Benefits: Consistent aeration energy despite increased loads (COD / filterable solids) 50% self-supply of electricity for the wastewater treatment plant (approx. 146,000 kWh/a) 20 – 30% less sludge for dewatering (reduction in disposal costs) Utilisation of waste heat from CHP to heat the digester.[...]

[...]HUBER Technology Nordics supplied a mobile, high-performance wastewater treatment solution for the start of production at a newly built fish processing plant in Ulvan, Norway. The containerised rental plant with integrated HUBER Dissolved Air Flotation Plant HDF was installed on behalf of Måsøval Fiskeoppdrett AS Slakteri and ensures compliance with environmental standards during the commissioning of the new production facility. Mobile wastewater treatment at the highest level A HUBER HDF S8 rental plant with a throughput capacity of up to 100 m³/h is used. The entire plant is housed in two 40 ft high cube containers. One contains the flotation technology, the other all the necessary peripheral components. The container solution enables quick commissioning and flexible site selection – ideal conditions for temporary use in industrial production processes. The Ulvan site in Trøndelag, on the west coast of Norway, is characterised by fish farming and processing. The Måsøval Group is one of the established players in the field of sustainable aquaculture. The new plant is a central component of the company's expanded production capacities. Project progress and objectives The rental system was commissioned on schedule in September 2024. The rental period is initially set at 12 to 24 months, depending on the progress of parallel planning for a permanent installation. The temporary solution serves as a bridge to ensure legally compliant and efficient wastewater treatment right from the start of production. The project has been executed in close cooperation between HUBER Technology Nordics and HUBER SE. Expansion of the rental fleet with Q-PRESS® Since March 2025, the HUBER rental fleet has been expanded to include the Q-PRESS®: A HUBER Screw Press Q-PRESS® 620 for dewatering the flotate sludge was additionally supplied and commissioned on site. This addition optimises the treatment process and at the same time reduces disposal costs in the long term. The Q-PRESS® 620 was delivered and commissioned by our Swedish HUBER subsidiary. Summary The project in Ulvan impressively demonstrates how flexible and powerful HUBER rental plants can be in an industrial environment – as a temporary transitional solution or as a pilot project for a later permanent installation. The combination of technical reliability, rapid availability and comprehensive service makes HUBER a valued partner, even in the dynamic world of fish processing.[...]

[...]Muta Mazar , Jordan Until now, most of the sewage sludge produced in Jordan has been stored in open areas or in landfills that are usually unsuitable for this purpose. This approach has a negative impact on the quality of the surface and groundwater in the affected regions and also causes high emissions due to the release of methane. In practice, it also means that existing resources remain unutilised. Improving sewage sludge management With the aim of improving the economic and ecological sustainability of sewage sludge management in the country, similar projects are currently being planned in many places. HUBER SE succeeded in winning the first such project at the beginning of 2024. HUBER and its subsidiary MENA Water were thus able to set a first milestone. The construction time to commissioning was only ten months, meaning that the turnkey plant with the greenhouse construction was completed in record time. The project was fully planned by MENA Water and HUBER SE and coordinated by MENA Water. HUBER Sludgeturner SOLSTICE® for Muta Mazar wastewater treatment plant After years of intensive consultation and in close co-operation with MENA Water, we were able to secure the order for the supply of a HUBER Sludgeturner SOLSTICE® line including the associated control system, fans, safety and air-conditioning technology at the beginning of the year. At the wastewater treatment plant in Muta Mazar in western Jordan, 1,500 t/a of sewage sludge from 70,000 inhabitants can be dried in a 12 x 80 m greenhouse with a dewatering capacity of 20% DR – a sustainable and climate-neutral solution that uses the available solar energy. Sewage sludge becomes a valuable resource The HUBER Sludgeturner SOLSTICE® is characterised by its ease of operation and high reliability. In future, the new plant will be fed manually with the help of wheel loaders. The treated sewage sludge will subsequently be processed into alternative fuel, industrial raw material or compost additive. This makes the sewage sludge a valuable raw material for the operator in future and can therefore add value for them. HUBER SE is proud to be able to expand the international market and improve sustainability in the region.[...]

[...]In a city that never sleeps, resilience is non-negotiable. With the growing threat of storms and rising tides, some of New York City’s most iconic and vital institutions have turned to a single solution: HUBER’s TT7 pressure-rated stainless-steel doors. Designed as a pressure-tight access door, the TT7 is the optimal solution for flood protection, safeguarding lives, infrastructure, and history from nature’s fury. A Fortress for History on Governors Island In 2018, one of Governors Island’s historic buildings became an early adopter of the TT7. This 172-acre island, just 800 yards (about 731.52 m) from Manhattan, is home to over 50 historic landmarks and lush parkland. With its proximity to the water, flood protection is not just a precaution - it is a necessity. The HUBER TT7 now ensures that this cherished piece of New York’s history remains safe for generations to come. Over the years HUBER sold more than ten rectangular Pressure-Tight Doors TT7.1, completely made from high quality AISI 316L stainless steel. The door is statically certified and pressure-tight up to a water gauge of 10 m and opening to the pressure side. HUBER Technology Inc. is building project specific high resistant flood protection doors that are pressure tight up to a water gauge of 30 m for all types of buildings required protection even considering a guarantee for leakage and tightness between the frame and concrete. Technically the frames and doors are shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Shielding the Hudson’s Architectural Marvels By 2019, HUBER’s TT7 had earned the trust of real estate giant Tishman Speyer. A TT7 was installed in one of their premier Hudson River properties , reinforcing the flood resilience of their extensive portfolio. With properties spanning NYC, Chicago, and Boston, Tishman Speyer understands the importance of future proofing against extreme weather events Safeguarding the Future at Barnard College Fast forward to January 2025, and HUBER delivered yet another TT7, this time to Barnard College – part of the prestigious Columbia University. As an institution dedicated to shaping the minds of tomorrow, Barnard recognizes the importance of proactive infrastructure investments. The TT7 ensures that education and innovation continue uninterrupted, even in the face of climate challenges. HUBER Technology Inc. equipped the college with different types of four (4x) round pressure-tight doors TT7.R. These doors are even so completely made from AISI 316L, round-shaped instead of typically rectangular. HUBER is building these doors on project with individual diameters and a water tightness up to a water gauge of 10 m. Expanding Protection to the Heart of NYC’s Future Most recently, a TT7 was installed in a newly constructed multi-use residential and commercial development. As NYC evolves, so does its need for resilient infrastructure. From historic landmarks to cutting-edge developments, HUBER’s different types of flood-protecting equipment like the TT7 doors besides other solutions like manhole covers and flood screenings rakes we are proving to be an indispensable safeguard against an uncertain climate future.[...]

[...]Berching Regular maintenance by the manufacturer is the key to the safe and efficient operation of wastewater treatment plants. It also plays a vital role in preserving the value of your machines. With HUBER service you benefit from professional maintenance and original spare parts – directly from the manufacturer. This prevents unplanned breakdowns, extends the service life of your equipment, ensures long-term operational reliability and makes it possible to plan operating costs. HUBER Machine and Plant Service offers you comprehensive support with long-term benefits. In addition, the HUBER Digital Platform offers customers a modern, user-friendly way to order original HUBER spare and wear parts, as well as stainless steel equipment, quickly and easily online. Why choose the HUBER Manufacturer Service? Machines and plants are usually investments that require specialised support in order to maintain their value. As the manufacturer, HUBER knows its processes and machines down to the last detail and offers a service that is optimally tailored to your requirements. Your advantages at a glance: Original spare parts The use of original parts maximises the service life of your machines and minimises downtimes. Each component is specifically developed, calculated and manufactured during the design of the entire machine to ensure perfect interaction. This quality also applies to original spare parts; they make a decisive contribution to the safe and reliable operation of your system. Trained experts HUBER service technicians are specially trained in the products and know their technical features and requirements inside out. Through continuous training, they are always informed about the latest product innovations. They pass this specialised knowledge on to customers and thus create precious added value. Software updates & optimisation In addition to mechanical repairs, HUBER ensures that your machines are always equipped with the latest software updates. This keeps your system technically up-to-date and efficient. Maximum operational safety Regular maintenance reduces the risk of unexpected malfunctions, increases the operational reliability of your systems and makes it possible to plan operating costs. Long-term cost savings Maintenance directly from the manufacturer avoids cost-intensive emergency repairs, reduces overall operating costs and ensures that the systems retain their value in the long term. In addition, early detection of wear minimises the risk of expensive consequential damage. Customised service packages for your needs HUBER Global Service offers flexible service packages that are tailored to your individual requirements. You decide which services you require, from one-off maintenance to long-term maintenance contracts. Inspection & maintenance: regular inspection of your machines for early fault detection. Repair service: fast and professional rectification of faults. Spare parts service: delivery and installation of original spare parts. In short: Trust HUBER Global Service! Rely on HUBER's expertise and know-how to maintain your machines and plants in optimal condition. A professional, manufacturer-certified service will not only increase the efficiency of your plant operation, but also secure you long-term strategic advantages. Trust in quality that pays off – with HUBER's Machine and Plant Service![...]

[...]Osečina, Serbia The company Podgorina Frucht supplies to customers in the food industry high-quality fruit juice concentrates, purées, flavours, dried fruit and frozen goods. All their products are made from selected Serbian raw material. The wastewater generated during production is treated in the company's own in-house sewage treatment plant to such an extent that the clean effluent can without problems be discharged directly into the small Jadar river. The well trained company personnel operates a SBR plant for biological wastewater treatment. As a special feature of this project a HUBER Dissolved Air Flotation Plant HDF S is used to retain the activated sludge within the system. "S" stands for the application "sludge flotation". The HUBER Dissolved Air Flotation Plant HDF S is able to reliable meet the high effluent standards of <10 mg/l AFS even with seasonally greatly varying inlet concentrations. Compared to the basic HUBER Dissolved Air Flotation Plant HDF type "S" models excel for a longer residence time and a considerably increased free water surface. The voluminous surplus sludge can therefore be separated reliably and effectively. Moreover, a HUBER Dissolved Air Flotation Plant HDF S needs three to four times less space than a secondary settling tank that provides a comparable capacity. Through appropriate control of the preceding plant components both HUBER Dissolved Air Flotation Plan HDF S 15 units can be fed virtually continuously. An absolutely solids-free effluent is achieved by adding only a small amount of polymers (few g/kg DS), this is ensured through analogously monitored NTU values below 5. The flotation plant proves its capability even with solids loads higher then the maximum design values of 150 kg/h and 30 m³/h. The customer can therefore rely on additional reserve capacity for the future. The separated flotate sludge with a concentration of approx. 5% DR is recycled into the bio-system, the pre-thickened surplus sludge can optimally be dewatered to the maximum with a HUBER Screw Press Q-PRESS®, in this case a size 440 unit. Due to the sludge volume reduction in excess of 80 % the customer profits from tremendous savings of transport and disposal costs. In addition, due to the high separation efficiency of the screw press in excess of 98 %, the return load to the bio-system is minimized.[...]

[...]The success story of the HUBER ROTAMAT® machine family began 45 years ago. The patent for the HUBER Fine Screen ROTAMAT® Ro1 was filed at that time, and the ROTAMAT® family has continued to prove itself ever since through continuous innovation and adaptation. The patent described a combination of screening, dewatering, compaction and transport. Over the years, further variants of the Ro1 system, which is equipped with a screen basket and a rake, have been developed. These include the Ro2 with a rotating wedge wire basket, the RPPS, which has a perforated plate screen basket, and the latest variant, the ROTAMAT® STAR with a folded perforated plate screen basket. Over 9,000 machines in use Today, over 9,000 machines in various designs are in use in a wide range of areas and industries. Despite our many years of success, we are committed to innovation and renewal, ensuring that we always offer our customers the best possible solutions. Adjustable perforated plate: manufacturing and customer benefits All of the machines described above have a trough installed in the screen basket area in which the screenings are collected. Until now, this has been manufactured as a permanently welded perforated plate. The adjustable perforated plate offers considerable advantages in the manufacturing process. This allows the basket area to be adjusted more precisely and easily to the screw conveyor. Process engineering advantages This simplifies manufacturing and offers process engineering advantages for our customers. The possibility to adjust the perforated plate more effectively makes screenings conveying even more efficient in operation. Our customers have found that wear can occur on the screw shaft after years of use. With the adjustable perforated plate, this area can be readjusted to extend the machine's service life and increase efficiency. Adjustable slider: adaptable to specific requirements The adjustable slider in the machine’s discharge zone has already been successfully implemented in large machines. However, our customers' requirements vary, as does the composition of the screenings, which leads to different degrees of dewatering. The adjustable slider now allows for optimal adjustment to individual situations and levels of dewatering on our smaller machines, too. This enables a tailor-made solution for each customer and helps increase operational efficiency. Always at the cutting edge Through continuous innovation and adaptation to our customers' needs, we always remain at the cutting edge and offer solutions that meet the highest requirements. Even after 45 years, we continue to optimise our ROTAMAT® systems and adapt them to meet our customers' ever-changing needs.[...]

[...]Dharan, Saudi Arabia Section 1 There are different types of grit traps: longitudinal grit traps (unaerated or aerated) and circular grit traps. Circular grit traps are subdivided into two subcategories: simple hydraulic units and Vortex plants which, independent of the flow rate, keep constant the rotary speed of the wastewater within the grit trap. Four of such VORTEX grit trap plants, which we call VORMAX, were put into operation in Dharan a year ago. The VORMAX units certainly cannot complain about too little sand there in Saudi Arabia, the country of sand. A HUBER Fine Screen STEP SCREEN® SSV (Vertical) is installed upstream of each VORMAX to ensure perfect grit removal. The VORMAX units are designed for the maximum flow rate of 876 l/s each so that 90% of grit of 200 µm grain size is separated. The function principle of the VORMAX is based on the physical principle of centripetal force. A centripetal force is defined as to make solid particles follow a curved path towards the centre of curvature of the path. This principle is also known as the tea cup effect. The slowly turning stirrer in the grit trap creates a constant circular motion with the result that the grit moves from the bottom towards the centre. But the foundation for well functioning grit removal is laid already in the inlet. A regular and constant flow downstream of the step screen up to the grit trap bottom is the key. There are no bottom steps in the grit trap inlet and no baffles plates that could hinder grit removal efficiency. The stirrer has a slowly turning, strong gear motor. The service factor for this gear drive is dimensioned to factor 5 to ensure sufficient power is permanently available. For the increased life of the stirrers their propellers are hard metal reinforced for wear protection. The separated grit is drawn to the centre of the grit trap, as explained above, and dropped automatically into a deeper pump sump from where the grit-water mix is delivered to the grit classifier by an above-ground installed centrifugal pump. The grit trap outlet is designed to ensure hydraulic loss is kept to a minimum. After a year in operation the plants have successfully coped with the first wandering sand dunes coming in. The overall concept with HUBER STEP SCREEN® SSV units, HUBER Screenings Wash Presses WAP , HUBER Coanda Grit Classifiers RoSF3 and four HUBER Vortex Grit Chambers VORMAX grit traps represents a quite impressive solution. There are different types of grit traps: longitudinal grit traps (unaerated or aerated) and circular grit traps. Circular grit traps are subdivided into two subcategories: simple hydraulic units and Vortex plants which, independent of the flow rate, keep constant the rotary speed of the wastewater within the grit trap. Four of such VORTEX grit trap plants, which we call VORMAX, were put into operation in Dharan a year ago. The VORMAX units certainly cannot complain about too little sand there in Saudi Arabia, the country of sand. A STEP SCREEN® Vertical SSV is installed upstream of each VORMAX to ensure perfect grit removal. The VORMAX units are designed for the maximum flow rate of 876 l/s each so that 90% of grit of 200 µm grain size is separated. The function principle of the VORMAX is based on the physical principle of centripetal force. A centripetal force is defined as to make solid particles follow a curved path towards the centre of curvature of the path. This principle is also known as the tea cup effect. The slowly turning stirrer in the grit trap creates a constant circular motion with the result that the grit moves from the bottom towards the centre. But the foundation for well functioning grit removal is laid already in the inlet. A regular and constant flow downstream of the step screen up to the grit trap bottom is the key. There are no bottom steps in the grit trap inlet and no baffles plates that could hinder grit removal efficiency. The stirrer has a slowly turning, strong gear motor. The service factor for this gear drive is dimensioned to factor 5 to ensure sufficient power is permanently available. For the increased life of the stirrers their propellers are hard metal reinforced for wear protection. The separated grit is drawn to the centre of the grit trap, as explained above, and dropped automatically into a deeper pump sump from where the grit-water mix is delivered to the grit classifier by an above-ground installed centrifugal pump. The grit trap outlet is designed to ensure hydraulic loss is kept to a minimum. After a year in operation the plants have successfully coped with the first wandering sand dunes coming in. The overall concept with HUBER STEP SCREEN® SSV units, HUBER Screenings Wash Presses WAP , HUBER Coanda Grit Classifiers RoSF3 and four HUBER Vortex Grit Chambers VORMAX grit traps represents a quite impressive solution.[...]

[...]Munich, Germany The new HUBER Pile Cloth Media Filter RotaFilt® will celebrate its premiere at IFAT 2022: HUBER will exhibit an original machine of this filter type at the world’s leading trade fair for environmental technologies. The HUBER Pile Cloth Media Filter RotaFilt® consists of several disc-shaped and revolving arranged filter elements mounted on a center tube. These are installed vertically and fitted with special filter bags made of innovative pile cloth fabric. The pile fabric has a multidimensional structure and consists of a filter-active pile fabric layer and a support fabric. The wastewater entering the filter chamber flows continuously through the individual filter discs from the outside to the inside. In the process, particulate matter is reliably retained in the pile fabric structure. The retention of solids increases the filter resistance and the difference in water levels between the wastewater and clear water sides rises. At a certain pressure drop, the gradual cleaning of the filter discs begins. During this process, retained solids are reliably and effectively removed from the rotating filter elements via suction bars. The round filter discs ensure that no dead zones are created during the cleaning process. To prevent siltation of the basin, the settled sludge at the bottom of the basin is sucked out at regular intervals using suction lances. The HUBER Pile Cloth Media Filter RotaFilt® has a wide range of applications in advanced wastewater treatment. Typical fields of application are: Retention of fine suspended substances (sludge flakes, microplastics) Flocculation filtration for phosphorus elimination Prefiltration in the “Fourth Treatment Stage” (ozonation, granulated activated carbon) Post-filtration in the “Fourth Treatment Stage” (separation of powdered activated carbon) The HUBER Pile Cloth Media Filter RotaFilt® impresses with the following product-specific features: Maximized free surface of the filter segments due to an innovative support structure and optimized use of the filter area due to the round design of the discs Easy-to-maintain and powerful central rotary lobe pump, dry-installed for disc and bottom extraction High ease of maintenance due to optimized design of the filter discs and the suction system High cost efficiency due to minimum system footprint through optimized pulley diameter In the near future, the HUBER Pile Cloth Media Filter RotaFilt® will start operation at the Kreßberg WWTP (Baden-Württemberg) for phosphorus elimination by flocculation filtration and at the Bickenbach WWTP (Hesse) as prefiltration for advanced wastewater treatment for removal of trace substances (ozonation followed by activated carbon filtration).[...]

[...]Challenges in mechanical preliminary wastewater treatment Screens, such as the HUBER Multi-Rake Bar Screen RakeMax® , are used in the inlet of wastewater treatment plants to remove coarse contaminants from the incoming wastewater stream. At the same time, such preliminary screens also protect the operation of downstream machinery and units, such as a screw conveyor or a wash press, and ensure the smooth operation of the entire wastewater treatment plant. In addition to the type of material to be expected, however, other unforeseen materials often get into the inlet of the sewage treatment plant, such as canisters, squared timber and tyres. Even though screening plants are built for coarse and bulky material, such matter can cause massive damage, resulting in long downtimes, high costs and, above all, additional stress. To prevent this, HUBER has developed a worldwide unique system for wastewater screens: the HUBER Detection System Safety Vision. Contaminant detection The innovative HUBER Detection System Safety Vision enables the screen to "see" the screenings and reliably identify potentially critical contaminants. This is achieved by precise real-time measurement of the screenings with sensors, fast processing of the measurement results, and an intelligent evaluation logic that examines the measurement results for defined anomalies. As soon as potentially critical screenings are detected in this way, the operation of the screen stops immediately. At the same time, an image of the situation in the screen is recorded and transmitted to the operator. Based on this message, the operator can decide individually whether the screen should continue to be operated or should stop until the debris is removed. This effective protection mechanism reliably prevents damage to the screen or the downstream equipment, which not only increases the availability of the machines involved, but also improves the operational safety of the entire plant technology. Further functions - runtime optimisation and adaptive operation In addition to the contaminant detection function, the measurement results obtained are also used to enable two further functions: the adaptive operation of the machine combination based on the detection of events and the optimisation of the running time of downstream machines. Adaptive operation: Adaptive operation addresses the challenge of sewer flushing surges. These occur primarily shortly after the onset of heavy rainfall events and cause an extremely high pollutant load in the inflow to the treatment plant. In unfavourable cases, the screen can become overloaded by the high freight volumes and fail, with the result that the wastewater reaches the next process stage almost unpurified. To safely avoid such situations, the measurement results recorded by Safety Vision are used and checked for known events with the help of a sophisticated evaluation. If the evaluation registers signs of an incipient flush surge, the screen is automatically released and set to "flush surge mode". This has the positive effect of reducing the risk of overloading the screen to a minimum. If, in the course of time, the pollutant load and thus also the risk of overloading the screen decreases, the screen adapts to the current conditions by automatically switching to the appropriate operating mode. Adaptive operation thus both prevents overloading of the screen and ensures that the screen is always optimally utilised. However, this function does not only affect the screen, but also includes other HUBER machines that are directly connected to the screen. Runtime optimisation: The third Safety Vision function - runtime optimisation - pursues the same goal as optimal machine utilisation. With the help of this function, it is possible to reduce the operating times of downstream machines such as the HUBER Wash Press WAP® or HUBER Screw Conveyor Ro8 T by up to 40 %. This is achieved by permanently evaluating the measured screenings volume on the rake bar. The intelligent control system then ensures that the addressed machines are activated according to the actual screenings volume present and not according to rigid specifications. By reducing the running time of the machines, not only the operating costs can be reduced, but also the wear. This consequently leads to both lower maintenance costs and a longer machine service life. Media Gallery HUBER Detection System Safety Vision detects beaver in HUBER Multi-Rake Bar Screen RakeMax® and saves its life HUBER Detection System Safety Vision saves HUBER Multi-Rake Bar Screen RakeMax® from major damage caused by pipe sealing cushions Animation: HUBER Safety Vision system for impurity detection Innovative and intelligent early detection of critical coarse material by continuous monitoring to protect screens safely and reliably against blockage and damage Safety Vision in use HUBER Safety Vision proves its function on a daily basis at many wastewater treatment plants, where it performs its duties reliably and effectively. For example, three HUBER Multi-Rake Bar Screen RakeMax® units used as coarse screens at the Nuremberg wastewater treatment plant were equipped with Safety Vision. This not only reduced the running time of the downstream HUBER Wash Press WAP® units by about one third, but also prevented several cases of damage. This is impressively illustrated by the picture with the pipe sealing cushion, which was detected by HUBER's contaminant detection system Safety Vision during the commissioning of a screen in September 2019 and protected the screen from major damage. In addition to the pipe sealing cushion, larger pieces of wood and a live beaver were also identified several times. The latter could be safely released back into its original habitat after being freed from the screen by the Nuremberg professional fire brigade. The experience gained so far and the application examples described impressively show that the HUBER Safety Vision contaminant detection system is not only a unique system that can optimise the operation and safety of the mechanical pre-treatment stage on a wastewater treatment plant, but that Safety Vision can also save lives. Qick Facts on HUBER Safety Vision: Maximum machine availability and operational safety through protection of the screen and downstream machines Reduced wear and maintenance, increased machine lifetime and reduced costs by optimising the runtime of the downstream HUBER machines Optimum machine utilisation through adaptive operation based on event detection[...]