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[...]Rhiwsaeson, UK Achieving Reliable Ultra‑Low Phosphorus Compliance using the HUBER Pile Cloth Media Filter RotaFilt® Client: Dŵr Cymru Welsh Water, Site: Rhiwsaeson Wastewater Treatment Works (Trickling Filter site, 51 l/s FFT) The Challenge With increasingly stringent Total Phosphorus (P T ₒₜₐₗ) consent limits on the horizon, Rhiwsaeson WwTW required a robust, future‑proof tertiary treatment solution capable of consistently achieving 0.1 mg/l P T ₒₜₐₗ The solution also needed to perform reliably under: Variable flows and seasonal temperatures, Wet and dry weather conditions, Periods of upstream biological stress and planned maintenance, and Existing chemical dosing arrangements. The Solution A HUBER RotaFilt® TSR pile cloth filter, supplied as a free‑standing demonstration unit, was installed alongside a compact tertiary coagulant dosing system housed in a small ancillaries container. The RotaFilt® system was trialled from November 2024 to July 2025, allowing performance to be assessed across a full range of operating conditions. Performance Results The trial clearly demonstrated that the RotaFilt® system: Consistently achieved ≤0.1 mg/l Total Phosphorus, Maintained effluent quality without adverse impacts on other parameters, Operated reliably across seasonal temperature changes, and Performed effectively even during upstream process challenges. Importantly, the system showed strong resilience, continuing to meet phosphorus targets when the biological treatment process was not operating optimally. Operational Insights & Process Benefits The trial delivered valuable operational data and optimisation opportunities: Insensitivity to Dosing Set-up The degree of mixing after dosing and flocc retention time were not critical to ensure effective phosphorus removal performance. When the upstream biology was underperforming, however, ≥ 5.5 outgoing pH was realised by maintaining: ≥0.5 m/s velocity through the static mixer, and ≥90 seconds flocc retention time. Smarter Chemical Control A clear relationship was identified between the incoming turbidity and P T ₒₜₐₗ concentration. This enables more accurate, demand‑based coagulant dosing, rather than relying solely on flow‑proportional control. Low Maintenance, High Resilience A deliberately induced partial clogging event demonstrated: Rapid recovery, No need for chemical cleaning, and No removal of filter discs was required. Furthermore, over 9 months of continuous operation: No deep cleaning of the pile cloth media was necessary, and The natural humus build‑up during warmer months was easily managed using a simple, operator‑friendly method. These confirmed the RotaFilt® system’s low maintenance burden and high operational robustness. Operational Cost Savings A key outcome of the trial was the discovery that: Target phosphorus levels were achieved without increasing tertiary coagulant usage when the primary ferric dosing stage was inactive. This finding highlights the significant potential for chemical OPEX savings, particularly for sites reviewing or rationalising existing dosing strategies. Conclusion The RotaFilt® system proved to be a reliable, efficient, and low‑maintenance solution for ultra‑low phosphorus removal at Rhiwsaeson WwTW. The HUBER RotaFilt® offers: Confidence in meeting tightening discharge consents, Reduced operational risk, Optimised chemical usage, and A compact and easily deployable tertiary treatment solution. The HUBER RotaFilt® is a proven choice for wastewater treatment works seeking dependable phosphorus compliance with long‑term cost benefits.[...]

[...]Manholes fulfil an important task in water supply and wastewater disposal. They are used for example where shut-off fittings in pipelines must be accessible, or to control sections of very long pipelines, and for aeration/deaeration or access to complex installations (e.g. well shafts, pressure reduction shafts, and many other). Safe access must be ensured in each individual application. The operators of manhole structures are responsible themselves for the security of their manholes! Operating staff has to observe numerous instructions that should avoid accidents if applied correctly. Any work to be executed in manholes must be done by two persons. For security reasons, one person must stay outside the manhole. Most of the manholes are entered from the top. This means that operating staff must open a cover and climb into the manhole via a certified climbing system combined with a suitable, also certified entrance aid. They must bend over the manhole opening already when opening the cover. The installation of antifall guards can prevent accidents and provides a reliable protection against falling when opening manhole covers. The guards can be closed to secure the opening while working inside for a longer time. Nevertheless, the guards are designed to let in enough daylight. The antifall guards are dowelled into the manhole neck below the manhole cover and snap in automatically when opened. Due to their special design they provide sufficient stability to prevent that anyone can fall down. Such antifall guards can any time be retrofitted into existing manholes.[...]

[...]Berching HUBER has been committed to providing innovative wastewater treatment solutions for cruise ships for many years, contributing directly to the protection of the world's oceans. Over 200 HUBER sludge screening and dewatering systems have already been installed for maritime applications. These ‘floating wastewater treatment plants’ are an indispensable part of modern cruise ships, as operating in coastal areas is not permitted without strict compliance with wastewater limits. A team from Wärtsilä Water & Waste in England visited Berching A particular highlight was the operator training course for five operators from Wärtsilä Water Systems Ltd. (UK), a leading global provider of water and wastewater treatment systems for ships with around 1,700 employees. The participants, who were technicians and dispatchers, received targeted training in the installation, commissioning and maintenance of a ROTAMAT® Fine Screen. HUBER screens play a central role in Wärtsilä's wastewater treatment process, which is based on membrane biology. A ROTAMAT® Fine Screen with a mesh size of 0.5 mm housed in a specially designed container reliably protects the sensitive hollow fibre membranes from blockages and damage caused by coarse and foreign matter. This ensures the trouble-free operation of the membrane biology system – and thus reliable compliance with wastewater limits on board. Special requirements at sea The two-day theoretical and practical training course at the HUBER headquarters focused on the unique challenges of treating wastewater at sea: Limited space for installation, inspection and maintenance. 100% wastewater treatment availability required throughout the entire voyage. Fluctuating pollutant loads require highly flexible plant technology. Rolling and tilting movements of the ship make operation and maintenance difficult. Changing operating and maintenance personnel with a wide variety of backgrounds Spare parts supply and technical support are only possible during port layovers. Practical training was carried out on a fine screen specially adapted for ship applications. Direct, constructive feedback from the operators during the training provided valuable input for the further optimisation of this ship design, especially with regard to even greater serviceability and maximum process stability in challenging on-board conditions. Positive conclusion and insights into production One participant summed it up: ‘It was a great experience and all the feedback from everyone who attended has been really positive!’ In addition to the technical training, joint dinners and a factory tour provided comprehensive insights into the HUBER product portfolio and the vertical range of manufacture in Berching. Many thanks to the Wärtsilä team for the constructive discussions and for placing their trust in us. We look forward to continuing our collaboration![...]

[...]Kodersdorf, Germany Kodersdorf in Saxony is located on the White Schöps River and is characterised by a charming landscape, nestled between the Königshainer Mountains and the Upper Lusatian pond landscape in the vicinity of Görlitz. The sewage treatment plant in the industrial area has a capacity of 7,500 PE and aerobic sludge stabilisation. The plant was expanded from 4,500 PE to 7,500 PE in 2023. The expansion of capacity also necessitated the construction of a second sludge storage facility and a stationary sludge dewatering system. To ensure efficient sludge disposal for the future, the sewage treatment plant was equipped with a solar sludge drying system. Premiere of the HUBER Sludge Turner SOLSTICE® FloorRunner With this plant concept, the municipality of Kodersdorf is building a system that enables unmanned, autonomous operation thanks to full automation. The plant must be monitored, adjusted and maintained, but no personnel are required for actual operation. The entire process flow is automated, from thin sludge to dry granulate. Automation reduces the workload for operating personnel. In times of skilled labour shortages, the automated sludge treatment in Kodersdorf is therefore future-proof. The plant can be operated either directly via the HMI touch panels on the plant itself, or via screen redirection to on-site end devices. Details of the process Efficient sludge dewatering with the HUBER Screw Press Q-PRESS® In Kodersdorf, a HUBER Screw Press Q-PRESS® 440 dewaters almost 150 tonnes of dry matter to approx. 20–23% dry residue. The annual 730 tonnes of dewatered sewage sludge are conveyed by a HUBER Screw Conveyor Ro8 TSF to the solar sewage sludge dryer. Optimal drying thanks to intelligent system design There, the HUBER Sludge Turner SOLSTICE® FloorRunner, which is movable on a newly developed steel angle construction, distributes the sludge over a 660 m² drying area. The drying area is housed in a 68 m long and 12 m wide greenhouse construction equipped with controlled fans. By turning the sludge with the HUBER Sludge Turner SOLSTICE® FloorRunner, combined with the air turbulence from the fans and the accumulated heat in the greenhouse, as well as direct sunlight on the surface, the sludge dries to an annual average of over 80% dry residue. With an annual global radiation of approx. 1,085 kWh/m²/a on site, 550 tonnes of water evaporate. At the end, approx. 180 tonnes of dry granulate with a density of approx. 0.8 kg/l remain to be disposed of. Automated sludge removal for efficient further processing The automatic sludge removal system, consisting in a HUBER Screw Conveyor TSD followed by a bucket elevator with distribution, conveys the granulate into two containers. Thanks to the consistent use of the HUBER machine technology, all components of the system are efficiently coordinated with each other. Compactness and functionality through innovative technology Like its predecessor, which required a concrete foundation, the HUBER Sludge Turner SOLSTICE® FloorRunner is equipped with a double shovel that turns the sludge bed and moves it forward. In order to move material to specific points, the sludge turner also uses the double shovel as a transport vessel. In Kodersdorf, this function is used to place wet sludge feeding and dry sludge removal on the same gable side of the greenhouse. This allowed the greenhouse construction to be extended to the boundary of the sewage treatment plant. The compact design makes optimum use of the available space. HUBER Sludge Turner SOLSTICE® FloorRunner now available worldwide HUBER now offers the SOLSTICE® FloorRunner worldwide. The benchmark status of solar sewage sludge drying with HUBER technology will become even more apparent in the future as the technology continues to develop. Long-term, trouble-free solar drying operation thanks to sophisticated HUBER machine technology will convince customers worldwide. The commissioning of the plant was successfully completed in May 2025. We would like to thank IBOS Engineering, ZV Kodersdorf and Stowasser for their excellent cooperation.[...]

[...]The city of Nuremberg has two sewage treatment plants in the city centre. One is the Nuremberg I STP on Adolf-Braun-Straße and the other is Nuremberg II on Gertrudstraße. Both plants process the wastewater of the city of Nuremberg and rely on HUBER's sustainable and efficient machine technology, particularly for mechanical pre-treatment of the wastewater. At STP I, the screen and grit chamber are from HUBER, and the screening system at StP II is also from HUBER. In the past, HUBER had already supplied several of its WAP® wash presses to the two sewage treatment plants. This provided valuable insights into the process requirements of the plants. Project start at Nuremberg I Sewage Treatment Plant Consequently, HUBER was involved in the planning for the conversion of the Nuremberg I STP by the engineering firm Arnold from Kissing as early as 2016. After winning the tender in 2018 and being awarded the contract, the 3-line conversion was gradually implemented in 2019 during ongoing operations. HUBER machines installed in STP I The following machinery was installed: 3 coarse screens – HUBER Multi-Rake Bar Screen RakeMax® 6080x1575, 30 mm bar spacing, 2200 l/s maximum flow, incl. HUBER Safety Vision for contaminant detection each 3 fine screens – HUBER Multi-Rake Bar Screen RakeMax® J 7040x1775, 6 mm bar spacing 9 HUBER Screw Conveyor Ro8 T units, size 355 3 HUBER Screenings Wash Press WAP® 8 S HD units with mechanical high pressure unit each Optimisation of screenings treatment To further optimise screenings treatment and enable automatic filling of the on-site screenings collection containers, three HUBER Tipping Troughs, DN 500, were subsequently installed on the discharge pipes of the screenings wash presses. In addition, HUBER was awarded the contract in 2021 to supply and install two HUBER COANDA Grit Washer RoSF4 size 3-Special, V4A, 40 l/s. Renovation at the Nuremberg II Sewage Treatment Plant After completion of the work at STP I, the next phase of the project was the expansion and renovation of the mechanical pre-treatment stage (screens and screenings treatment) at the Nuremberg II STP. Here too, HUBER won the tender and was delighted to be awarded the contract in 2023 for: 2 coarse screens – HUBER Multi-Rake Bar Screen RakeMax® 3840x2275, 40 mm bar spacing, 2000 l/s maximum flow, incl. HUBER Safety Vision for contaminant detection each 2 fine screens – HUBER Multi-Rake Bar Screen RakeMax® J 3840x2275, 6 mm bar spacing 2 HUBER Screw Conveyor Ro8 T units, size 355 4 HUBER Screenings Wash Press WAP® 4 S HD units with high pressure unit each Installation under special conditions The installation at STP II proved to be particularly challenging. Since the large screens could only be installed via the roof and due to the enormous overhang, the installation could only be carried out with a 100-tonne crane. We would like to express our sincere thanks to the operating personnel at the plants. HUBER also benefited from the experienced staff through their constructive and intensive cooperation in the project work described. In particular, the in-house electrical engineering team gained a thorough understanding of the HUBER technology through the programming work and optimised some of the processes along the way. Thank you once again for the trust you have placed in us.[...]

[...]Berching, Germany Whether microscreening, pile fabric filtration or GAC adsorption In recent years, hardly any other topic has been discussed more intensively than the introduction of the 4th treatment stage for the targeted removal of trace substances. Even though there are currently no binding legal requirements in Germany, more and more municipalities and wastewater associations are now considering how this treatment stage could be implemented in the near future, taking into account all individual requirements and boundary conditions. In addition to wastewater composition, space conditions and plant size, the existing plant technology and the discharge conditions at the wastewater treatment plants have the greatest influence on the choice of the optimal process. It has become apparent over the past few years that both adsorption and ozone treatment can be used for the 4th treatment stage. HUBER offers various high-performance key components for all these process solutions. HUBER Active Carbon Filter CONTIFLOW® GAK The HUBER Active Carbon Filter CONTIFLOW® GAK is a reliable product for the removal of trace substances. Combined with the HUBER Disc Filter RoDisc® as a microscreen, it forms an ideally matched process solution for the 4th treatment stage. The HUBER Active Carbon Filter CONTIFLOW® GAK allows simple, modular retrofitting even on smaller wastewater treatment plants. It does not require complex carbon dosing technology and thus does not generate any dirt or dust load. Furthermore, no precautions for explosion protection are necessary and the granulated activated carbon used can be easily regenerated and reused. HUBER Disc Filter RoDisc® The HUBER Disc Filter RoDisc ® is of outstanding importance as an upstream police filter, especially in processes with granulated activated carbon (GAC). It protects the high-quality activated carbon from contamination and thus ensures stable, low-maintenance plant operation in the long term. As a positive side effect, the HUBER Disc Filter RoDisc® also almost completely removes microplastics still contained in the effluent. HUBER Pile Cloth Media Filter RotaFilt® For the so-called "Ulm process", the classical adsorption process with powdered activated carbon (PAC), HUBER has now added to its product portfolio the new HUBER Pile Cloth Media Filter RotaFilt®, a reliable, high-performance polishing filter. This filter is placed downstream of the adsorption stage and the sedimentation tank and, with its innovative pile fabric material, ensures an almost completely particle-free effluent. The Ulm process itself is considered a very reliable, operationally safe process, especially for larger wastewater treatment plants, which gains additional attractiveness by exploiting various synergy effects (simultaneous phosphorus elimination, improved sludge dewatering). Regardless of which process is ultimately chosen for the implementation of a fourth treatment stage: HUBER offers ideally matched, high-quality key components for all options.[...]

[...]Pöndorf, Austria Pöndorf, located in western Upper Austria, is home to a historical landmark: the former border wall that marked the boundary between Bavaria and Upper Austria for 342 years, from 1437 to 1779. The Maier butcher's shop is also a Pöndorf landmark, renowned for its excellent products throughout the country for generations. It already had two mechanical wastewater pre-treatment systems, one of which was for livestock truck wash water. Unexpected sediment accumulation During the last aeration tank inspection, the municipal sewage treatment plant in Pöndorf, with a capacity of 7,850 PE, discovered that there was an unexpectedly large amount of organic sediment in the flow-calmed zones. The origin was quickly clarified due to its consistency. HUBER, also the supplier for the municipal wastewater treatment plant, was invited to assess the situation and make a proposal. Problems with pre-separation due to inadequate technology One problem was the pit from which the chip-water mixture was sucked by a self-priming wastewater pump and pumped into a drum screen with 3 mm perforations. This screen did not have a system for continuous screen surface cleaning. This often led to overloading of the screen surface, which resulted in water in the screenings on the one hand and the conveyor belt being washed off by the overflow on the other. It flowed into the drain, causing chips to enter the sewage treatment plant with the domestic wastewater. The suction area of the pipe or pump was often clogged with ropes or large solids. The solution: collaboration with HUBER The retired house and farm manager Friedl Lixl came up with the concept together with the HUBER sales team, and the boss agreed to his recommendation. They decided to bypass the pit and use the natural slope — the butcher's shop is located on a hillside — and lay a direct feed line from the slaughterhouse, which is situated one floor above, to the HUBER Micro Strainer ROTAMAT® Ro9. Technical implementation The Ro9-400 Micro Strainer with 1 mm bar spacing, installed in the inlet tank and supplemented by a cross conveyor screw for the screened material, is located in the frost-proof area of the lorry garages without affecting the lorry parking space. Trouble-free operation, sustainable success HUBER was able to provide references from livestock truck washes (medium-sized companies know each other) and also present credible technical arguments. The malfunctions are now a thing of the past and the Micro Strainer ensures excellent operation. Is this topic also of interest to one of your customers? Give us a call.[...]

[...]Germany In times of global uncertainty, rising raw material prices and growing environmental requirements, the recycling of plastics is becoming increasingly important. However, producing new materials from fossil fuels is often still cheaper than recycling. This makes the quality of the recycled material and the cost-effectiveness of the entire plastic recycling process all the more crucial. This is precisely where HUBER comes in. Our technologies for treating process water and sludge provide the basis for sustainable and economical recycling processes. Advantages of HUBER technology based on customer feedback HUBER offers a comprehensive range of machines and plants for the treatment of process water and sludge, which is a major advantage over many competitors. This is a significant benefit for planners, consultants, and manufacturers of plastics machinery. They have a single point of contact, a specialist, who can cover all their water treatment requirements. The wide range of variants in the HUBER portfolio also enables high throughput rates with just one machine (e.g. 350 m³/h per flotation unit). Highest quality and materials HUBER relies on the highest quality stainless steel for its products and solutions, which are fully acid-treated in a pickling bath. This ensures durability and process reliability HUBER Global Service Another key advantage is that HUBER offers global service through its subsidiaries, representative offices and partners, supported by four international production sites. This ensures rapid support even outside Europe. Operating experience in plastics recycling As one of many examples, a leading global manufacturer of high-performance plastic films relies on HUBER technology at several of its sites, including locations in Sweden and France. They recycle agricultural and construction films are recycled there. HUBER machines used HUBER Complete Plant ROTAMAT ® Ro5 Reliably removes contaminants such as plastic particles and grit. Simultaneous compaction significantly reduces disposal costs. HUBER Dissolved Air Flotation Plant HDF with DIGIT-DOSE chemical dosing The clear water can be reused in the recycling process and as process water for the HUBER machinery. The intelligent DIGIT-DOSE system simultaneously reduces both precipitant consumption and sludge volume – a clear advantage over competing products. Throughput: 150 m³/h – one HUBER unit can replace up to three flotation units from other suppliers. HUBER Screw Press Q-PRESS ® Fully automatic, continuous dewatering with minimal energy consumption (<1 rpm thanks to IE4 drive). In contrast to centrifuges or chamber filter presses, personnel costs, downtime and wear are greatly reduced. The press water produced is directly reprocessed via the HUBER flotation unit – a closed water cycle. Customer satisfaction Thanks to high efficiency and a single point of contact, the customer plans to equip future sites, including in the USA and Denmark, with HUBER machines. Cooperation with manufacturer of plastic recycling machines A manufacturer of plastic recycling machines relies on HUBER technology as standard for the treatment of process water and sludge. Machines used: HUBER Drum Screen RoMesh ® Removes fine solids from the process water. The integrated rinsing system enables operation without the need for any fresh water supply. HUBER Dissolved Air Flotation Plant HDF and HUBER Screw Press Q-PRESS® These machines deliver above-average results in terms of separation performance, operating costs and maintenance requirements. According to customer feedback, they are significantly more efficient than competing products. Additional customer benefits Technical expertise remains with the respective experts Synergies in joint tenders Only one contact person for multiple processes Reliable on-site service through the HUBER partner network Most efficient flotation on the market Excellent filtrate quality Minimal personnel and maintenance costs Unbeatable after-sales support – global and fast High-quality design as the basis for long service life Summary HUBER offers the plastics recycling sector not only individual machines, but complete, well-thought-out solutions. Through high-quality technology, energy efficiency, a global service network and in-depth application knowledge, HUBER creates clear added value for machine manufacturers, operators and planners, while also making an important contribution to a sustainable recycling management.[...]

[...]Villach, Austria For many decades, the coarse screens designed as direct current screens served their purpose in the Villach sewage treatment plant, which has a capacity of 250,000 PE. During rainfall events, it often happened that the resulting amounts of screenings could no longer be conveyed because the single rake was unable to hold them. The reason for this was that the clearing interval lasted more than one minute – a circumstance that led to the accumulation of screenings in front of the screen during a flushing surge, which in turn often resulted in the collapse of the screening system. Two screens with different requirements The requirement was to install two coarse screens with different bar spacings, 8 mm and 12 mm, and two different throughput rates of 1.8 and 5.4 m³/s in two existing channels 5.25 m deep and 2.5 m wide. The HUBER RakeMax® impresses HUBER impressed with the technical features of its Multi-Rake Bar Screen RakeMax®. The client was particularly impressed by the following features: the solid chain made of V4A steel with double breaking load, wider chain links and correspondingly low surface pressure in the joints the wide protective rollers for the large-diameter chain bushings the large chain pitch, which results in fewer joints and thus less chain wear the chain bushings and pins made of duplex steel the ceramic/chilled cast chain sprocket bearings in the lower chain deflection wheels, which had already proven themselves in thousands of grit washers, grit classifiers, screw conveyors and more than 3,000 RakeMax® screens worldwide, as well as in numerous HUBER Belt Screen EscaMax® units, thanks to their extremely high wear resistance. Proven materials and reference projects strengthen confidence For instance, after around 50,000 hours of operation, the lower ceramic/chilled cast iron sprocket bearings of the 3.0 m wide, approximately 1.5 m deep HUBER Belt Screen EscaMax® at the Salzburg wastewater treatment plant were removed. This screen was operated with a large water level difference. Despite having to withstand many times the load of a RakeMax® screen, the bearings showed no significant wear. Being able to provide such references strengthens confidence. Further design features for optimum performance Two further features were: the low hydraulic resistance of the screen bars used by HUBER and their tangle-free spacer mounting halfway up the two-metre-high bar rack. Adjustments for maximum operational efficiency In addition, the RakeMax® coarse screens for this site were designed with three more clearing rakes than is standard manufacturing practice. As the HUBER field service team has been familiar with the RoK installations in the storm water overflows for many years, special attention was paid to high clearing speed and thus low screen clogging. Quality in detail convinces the operators Some readers may find the above description overly detailed, but it is precisely this multitude of well-considered design features that are presented here: These features account for the HUBER Multi-Rake Bar Screen RakeMax®'s particularly high quality and reliability, a fact recognised by the managers of the Villach sewage treatment plant.[...]

[...]Parsberg, Germany The town of Parsberg lies in the heart of the Bavarian Jura between Nuremberg and Regensburg. It is particularly popular with tourists as a local recreation area and thanks to its perfect connection to the Five Rivers Cycle Route. The Parsberg sewage treatment plant is located in the valley alongside the Schwarze Laber river. It has a mechanical, biological and chemical treatment stage and is designed for up to 13,300 PE. A two-storey building was specifically constructed on the hilly terrain for local sludge dewatering, which was a conscious decision by the town of Parsberg. New building to optimise sludge dewatering The decision to construct a new sludge dewatering and storage facility near the existing sludge storage tank was made because the load on the sewage treatment plant had steadily increased by 10 to 15%, and the dewatering carried out by a contractor was costly. Sludge dewatering had been carried out on a quarterly basis until then. This resulted in large quantities of stored sewage sludge and filtrate building up in excess every four months. The large quantity that accumulated in a very short time could not be fully returned to the system and had to be disposed of at additional cost. New technology, new buildings At the end of 2022, the presentation of the new sludge dewatering building to the city council marked the start of construction at the Parsberg sewage treatment plant. In addition to the sludge dewatering plant building, it was also decided to build an integrated mixed sludge storage tank with a gas hood and a sludge storage hall. In addition to the HUBER Screw Press Q-PRESS®, the following equipment was also requested for sludge dewatering: the entire pump and measurement technology, polymer preparation including polymer mixing, switchgear and control technology with control system connection. Initial tests and positive results for the HUBER Screw Press Q-PRESS® The performance of the HUBER Screw Press Q-PRESS® Q440.2 was already tested on site in 2017 using our mobile demonstration unit in order to investigate the dewatering potential of the sewage sludge. The positive characteristics of the HUBER screw press were confirmed there: Dewatering performance > 26% DR Throughput of up to 4 m³/h Possibility of 24/7 operation Very good separation efficiency of > 98% Construction and commissioning Construction of the sewage sludge dewatering building began in autumn 2023. The building was designed to optimally accommodate the equipment. The mechanical and electrical peripherals for the HUBER components were supplied by SCHARR TEC at Hunderdorf (Lower Bavaria), the general contractor for the overall project, for which the HUBER Screw Press Q-PRESS® with intelligent conveyor system, including process technology, was supplied. The HUBER Screw Press Q-PRESS® Q440.2 was then commissioned in January 2025. The screw press control system regulates the machine to the preset optimum operating point, with the aim of achieving a high degree of dewatering and minimal filtrate load. Additionally, the receiving tank is equipped with an automatic sludge level reduction system. This system uses a double-secured level detection mechanism for automatic feeding of the machine. Performance data and optimisations The following sludge dewatering performance data was achieved: Dewatering performance of 25% to 28% DR 25% reduction in polymer consumption with 25% outlet DR compared to 28% outlet DR (desired outlet DR: 25%) Throughput of up to 15 m³/h Very good separation efficiency of > 98% Screw shaft speed of 0.3 rpm Electrical drive power of the machine of 0.4 kW Additional positive side effects: The operator can optimise system operation independently. Automated sludge transport and container change The dewatered sludge is then automatically transported from the upper floor to the basement via a shaft connected to the Q-PRESS®, and is then further conveyed into a container by a HUBER Ro8 TC distribution conveyor. The two degrees of freedom of the Ro8 TC – rotation and translation motion – ensure the container is filled to its optimum volume. The 20 m³ container is filled evenly due to the automatic swivel mechanism created by the rotational movement and the additional position adjustment of the screw conveyor’s chute with integrated fill level detection. The alternating filling of two containers is fully automated at the Parsberg sewage treatment plant, thus eliminating the need for employees to be present at any specific time. There is also no requirement for staff to be present when the dewatered sludge is transported away, which takes place every 6–7 days. By independently activating the ‘container change’ switch, the distribution screw automatically moves into a parking position, allowing the container to be changed independently without collision.[...]