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[...]Energy-efficient use of waste heat for drying sewage sludge The sludge is dried either with cold air (HPS ® ) or with hot air (BT) in a belt dryer. The dried product has a solid concentration ranging from 70% DS up to 95% DS. The HUBER Cold Air Dryer HPS ® is designed for small sewage treatment plants while the HUBER Belt Dryer BT is designed for medium to large treatment plants. The HUBER Belt Dryer BT is used for the belt drying process, which operates according to the convection drying principle. The dewatered sewage sludge is fed onto a drying belt with an extruder. Air heated by heat exchangers is passed through the dryer by means of fans and dries the sludge. As a medium-temperature dryer, the HUBER Belt Dryer operates with air temperatures ranging from 70 to 150°C. The experts at HUBER develop a tailor-made plant for the drying of sewage sludge, based on the respective framework conditions and the available energy source. This opens up all options for economical disposal or recycling of the sludge. Processing dewatered sludge The Belt Drying Process The entire belt drying process steps consist of the following main components and process steps: Intermediate storage and feeding To ensure continuous drying operation, the dewatered sewage sludge to be dried must be temporarily stored in a sludge bunker. The sludge is then fed from the sludge bunker to the dryer by means of a pump. To ensure continuous drying operation, independent of the operating time of the dewatering system, the dewatered sewage sludge is temporarily stored in a bunker. Special sludge pumps convey the sewage sludge to the belt dryer. Belt dryer The sewage sludge is fed onto the drying belt with an extruder, a feeding system specially developed for this application. This creates a defined, easily flowable layer of sludge, which is the basic prerequisite for efficient, uniform and low-dust drying. The sludge is slowly conveyed through the dryer and dried to a dry matter content of up to 95% TDR by means of hot air. Provision of heat The use of sustainable energy sources is clearly the focus when drying sludge with a belt dryer. The intelligent heat utilisation system of the HUBER Belt Dryer BT allows the use of any kind of waste heat for the drying process. The most common examples are waste heat from combined heat and power units (CHP), process waste heat or the use of saturated steam downstream of a steam turbine for electricity production. Heat pumps can also be used to supply heat. For example, the wastewater treatment plant effluent can be used as an energy source using the HUBER Heat Exchanger RoWin . Conveying and storing dried sludge After drying, the sewage sludge is transported to a silo or containers or is loaded directly onto trucks, depending on the degree of drying. The necessary conveying units are optimally matched to the degree of dryness of the sludge. Generally, the HUBER Screw Conveyor Ro8 T is used. However, other conveyors, such as bucket elevators or tube chain conveyors, are also possible.[...]

[...]Efficient drying process for partial drying of sludge The HUBER Disc Dryer RotaDry® is used for the disc drying process. A disc dryer is a contact dryer that transfers heat to the medium to be dried via direct contact of the hot disc. HUBER is an expert in drying processes and designs the optimal drying plant based on the individual requirements to ensure an economically and ecologically optimal utilisation of the sewage sludge. Disc Drying of Sludge The entire disc dryer process consists of the following main components and process steps: Intermediate storage and feeding To ensure continuous drying operation, the dewatered sludge is temporarily stored in a sludge bunker and conveyed to the disc dryer by a pump (alternatively screw conveyor). Disc dryer The sludge falls into the HUBER Disc Dryer RotaDry® on the feed side and is slowly conveyed towards the discharge by the rotary motion of the discs and shovels mounted on the disc periphery. A discharge screw completes the disc dryer system and determines the fill level inside the dryer by its frequency converter controlled speed. The disc dryer is mostly used for partial drying to a DR of 40 - 45% and the sludge is then thermally utilised in a fluidized bed incinerator. Provision of heat The HUBER Disc Dryer RotaDry® is heated with saturated steam (1.5 bar(a) and 10 bar(a)). Vapour condensation Two product streams leave the disc dryer after drying: the partially dried sludge and the water vapour with leakage air content (vapours) expelled from the sludge. The water vapour is precipitated in the vapour condenser, the vapour condensate is stored temporarily and then passed on for treatment.[...]

[...]Using the energy of the sun Solar drying of sludge uses the energy of the sun as a thermal energy source. This provides a very ecological, environmentally friendly and energy-efficient process for the treatment of sludge from wastewater treatment plants or water purification plants. The basic principle of the process is that the sludge is dried in a greenhouse structure. The sludge can be brought into the greenhouse manually, for example with a wheel loader, or automatically directly from the dewatering facility by means of special conveying units. In the greenhouse, the sludge must be distributed for optimal drying and turned over again and again. This task is performed by the HUBER Sludge Turner SOLSTICE® , which is the heart of the entire process. Sludge transport in the greenhouse is also handled by the turner. The dried sludge can then be deposited in a depression at the end of the hall or mechanically transported directly to a loading station. Solar Energy Regenerative and environmentally friendly Solar drying of sludge uses the energy of the sun as a thermal energy source. This provides a very ecological, environmentally friendly and energy-efficient process for the treatment of sludge from wastewater treatment plants or water purification plants. The basic principle of the process is that the sludge is dried in a greenhouse structure. The sludge can be brought into the greenhouse manually, for example with a wheel loader, or automatically directly from the dewatering facility by means of special conveying units. In the greenhouse, the sludge must be distributed for optimal drying and turned over again and again. This task is performed by the HUBER Sludge Turner SOLSTICE ® , which is the heart of the entire process. Sludge transport in the greenhouse is also handled by the turner. The dried sludge can then be deposited in a depression at the end of the hall or mechanically transported directly to a loading station.[...]

[...]From the screenings wash press to the container – reliable conveyor technology for any requirement After the screenings have been washed and dewatered in the HUBER Wash Press WAP® , they have to be discharged into the collection container. Depending on the amount of screenings and the local conditions, this transport operation can be simple or very complex. In the simplest case, the HUBER Wash Press WAP® discharges the screenings directly into a container standing next to the wash press. However, as soon as longer distances have to be covered and/or the screenings have to be transported from several screenings wash presses to one or more containers, additional conveying technology is required. HUBER solves such conveying needs with the proven HUBER Screw Conveyor Ro8 T (trough version) and the HUBER Screw Conveyor Ro8 (closed tube version). Reliable solutions can be created for any screenings quantity and any local conditions with this technology. Also with regard to the degree of automation, all customer requirements can be fulfilled, as the optimal filling of the containers can be ensured either with manual support as well as semi-automated or fully automated.[...]

[...]HUBER’s pre-treatment technology can be used for screening, washing oversized material, and removing grit and glass Its postdigestion equipment is suitable for plastics removal, dewatering, digestate cleaning, and disposal treatment. We recognise that customers’ processes differ, and have a range of pilot plants available for demonstrating HUBER Technology on different process streams. Applications for Anaerobic Digestion Pre digestion screens Grit removal and treatment Sludge import handling Oversize washing Post digestion screening Post digestion dewatering Digestate drying Filtrate cleaning For more information please contact: Dale Foster Industrial Business Development Manager 07980 316059 01249 765041 Dale.Foster@huber.co.uk For more information please contact:[...]

[...]Identification of the ideal time for screw shaft maintenance Maintenance of the HUBER Wash Press WAP® as and when required Sensor with signal LED on the HUBER Wash Press WAP® Also for retrofitting to the HUBER Wash Press WAP® The aim of the HUBER Wash Press wear detection system is to enable a preventive maintenance strategy. The system detects a threshold value in the diameter loss of the compacting screw in the closed compaction zone section of the wash press. This part of the compacting screw is usually the machine component subject to the most wear. At the same time, however, it is difficult to control. If increasing screw wear is detected, the operator is informed via a warning message in the machine control. Maintenance can now be planned in time and an unforeseen machine failure can thus be prevented. Benefits The user’s benefits Preventive maintenance strategy Avoid unplanned machine downtime Reduce service effort and costs With the exception of the smallest model, every version of the HUBER Wash Press WAP® will be equipped with the HUBER Wear Detection system in future. In addition, the HUBER Wear Detection system can be retrofitted to any HUBER Wash Press WAP®. The intensity of wear is significantly influenced by several factors Dry residue content of the screenings compacted and discharged: The force required for dewatering increases exponentially with the degree of dewatering of the screenings. The more highly dewatered the screenings are, the more intensive the wear. Grit, stones and debris in the screenings: large and small mineral components of the screenings act like sandpaper. Even small, but permanently present amounts of grit or debris components in the screenings have a negative effect on the service life of the screw. Especially in combination with high DR contents, this results in significant losses in service life. Unnecessary machine operation: If a wash press is operated without screenings, the last helical flights of the screw will also be emptied. The screw can then evade the compaction pressure and rubs against the conveying bars, which leads to additional wear and tear on the machine. The pictures below show screw shafts in new condition, beginning to wear and with advanced wear (left to right). 1 2[...]

[...]HUBER Detection System Safety Vision Innovative digitalisation module for the HUBER Multi-Rake Bar Screen RakeMax® Maximum machine availability and operational safety through detection of critical material to protect the screen and downstream machines Reduced wear and maintenance, increased machine lifetime and reduced costs Screenings volume-dependent control of downstream machines Optimal machine utilisation through adaptive operation based on event detection Challenges and Prevention Challenges in mechanical preliminary wastewater treatment The main task of the screens used and installed in the inlet to the sewage treatment plant is to remove coarse contaminants from the incoming wastewater flow. 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 are increasingly entering the sewage treatment plant influent, such as canisters, square timbers and tyres. Even though screening plants are built for coarse and bulky material, such matter can cause damage, resulting in longer downtimes, higher 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. HUBER Safety Vision – innovative digitalisation module 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. Advantages and benefits of impurity detection Effective protection of the screen and downstream machinery Reliable prevention of damage to the machines Increased machine availability Increased operational reliability of the entire plant technology Adaptive Operation and Runtime Optimisation 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 run clear 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. Advantages and benefits of adaptive operation Avoids screen overloading due to anticipatory freeing of the HUBER machines at the beginning of a surge. Optimal utilisation of the HUBER machines Reduced machine running time during heavy rainfall events with low pollution loads Lower energy demand Reduced operating costs Runtime optimisation The third Safety Vision function ‒ runtime optimisation ‒ pursues a goal similar to 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 wear. This consequently leads to both lower maintenance costs and a longer machine service life. Advantages and benefits of runtime optimisation Optimum utilisation of downstream HUBER machines Reduction of operating times of downstream HUBER machines by up to 40% Reduced operating costs Reduced wear Lower maintenance costs Longer machine service life[...]

[...]Replacing the primary clarifier with a fine screen – HUBER CarbonWin® In the HUBER CarbonWin® process, the primary clarifier is replaced by a fine screen. This results in the following advantages: Only 1/10 of the space required compared to conventional primary clarifiers Minimised investment and operating costs Suitable to be integrated into existing plants The primary clarifier is the last stage of the mechanical pre-treatment of a wastewater treatment plant and works according to the anaerobic sludge stabilisation process. In the primary settling tank, undissolved organic and inorganic substances settle at low flow velocities and with sufficient retention time and thus build the primary sludge. This is then added to the digester – usually after mechanical thickening – together with the excess sludge. In the anaerobic process, the sludge is converted into digester gas, which can be used for energy generation. Sewage treatment plants that work according to the principle of aerobic sludge stabilisation usually do not have a primary clarifier. However, the advantage of the simpler process technology is offset by high energy consumption, because sludge stabilisation takes place simultaneously with biological wastewater treatment through a correspondingly long aeration period (high sludge age). Aerobic sludge stabilisation is more common in smaller wastewater treatment plants up to about 20,000, sometimes up to 50,000 population equivalents (p.e.). Driven by constantly rising energy costs and technical innovations in the field of sludge digestion and digester gas utilisation, anaerobic sludge treatment is gaining in importance also for smaller sewage treatment plants designed for fewer than 50,000 PE. For an economic and energy-optimised conversion from aerobic to anaerobic sludge stabilisation, the use of a primary clarifier is usually unavoidable. Carbon Removal The HUBER CarbonWin® Process The HUBER CarbonWin® system offers an interesting and economical possibility to do removal of carbon without a primary settlement tank when converting from aerobic to anaerobic sludge stabilisation. In order to achieve the required carbon removal from the biological treatment stage, HUBER uses the fine screening process with the HUBER Drum Screen LIQUID. The advantages are low investment costs and a 90% reduction in space requirements. The HUBER Drum Screen LIQUID can also be used to relieve an existing primary clarifier. In case of overload of the primary clarifier, a partial flow can be treated with the HUBER Drum Screen LIQUID.[...]

[...]Tailor-made solutions for fish protection We develop solutions that are both designed and implemented to be sustainable and long-lasting. This starts with resource-saving manufacturing of our screens and screening machines, and continues with optimisation of structures for water abstraction projects, right through to comprehensive concepts for fish protection. Technical options HUBER solutions for fish protection Optimal fish protection starts with the correct design of the structure and the screen concept. This also includes fish deterrent systems and specially shaped filter elements for belt screens with integrated fish return. The primary goal of fish protection is to prevent fish from swimming into the intake structure in the first place. The prevailing flow conditions at the intake essentially influence the swimming behaviour of fish. The lower the approach velocity, the better the fish can swim away. It should therefore not be more than 0.5 metres per second. Furthermore, the angle of approach to the water intake and the bar spacing of the screen play an important role. Fish deterrent systems To keep fish out of water intake channels, fish deterrent systems are often installed as a behavioural barrier. These use electrical, optical or acoustic signals to scare fish away. For this purpose, HUBER cooperates with world-renowned specialists and relies primarily on the gentle solution of stroboscopic (or flashing) lights. The system has been specially developed to be ultra-bright. It uses low-energy LEDs with lenses to intensify the light. The solution is both effective and cheap to run. Fish return If fish swim into the area of screens and screening machines, we rely on automatic return concepts. For the HUBER Band Screen DiscMax® , for example, we have developed special fish buckets that are installed on each screen element. In combination with suitable return channels, the fish buckets ensure that fish are gently guided out and back into their natural waters. Our solutions help ensure that your water intake system meets regulatory requirements for fish protection, including the strict 316(b) regulation of the US Environmental Protection Agency's (EPA) Clean Water Act.[...]

[...]As part of HUBER Technology UK’s commitment to serving our customers, we offer an extensive selection of wastewater treatment machines at competitive prices for short or long term hire and trials . Furthermore we show various new innovative products on working sites in an active environment. They can be installed into service rapidly and ensure that your site is kept at full working capacity. Rent a HUBER – Mobile container systems Wastewater treatment plants Dissolved air flotation Sludge dewatering for sewage and industrial sludge Containerised wastewater treatment plants HUBER mobile container systems offer: Fast solution when limit values are exceeded and for reducing and dewatering generated sludge Reduced operating personnel thanks to fully automatic wastewater treatment Modular design , thus individually expandable Temporary solution for treating increasing wastewater volumes, to reduce wastewater disposal charges or use during renovation work Ready to go with control panels and level controls - all our machines will fit easily into your existing processes We offer support throughout the hire period. A valuable resource and flexible temporary solutions HUBER UK Hire Fleet Our Hire fleet in the UK can prove to be a valuable resource when: Part of your works is being refurbished and you require a temporary solution Additional support is required You experience an operational problem You need to supplement existing processing capacity Please see the Downloads section below which contains more in depth information on each machine or if you would like to discuss an enquiry please contact hire@huber.co.uk or +44 1249 765031. Reducing Risk HUBER UK Trial Units Understandably industry has a tradition of being cautious of introducing new technologies into existing processes. The wastewater and manufacturing sectors are no different, and often want to see a new product working on a live site to prove its reliability and performance over a period of time, as well as to demonstrate the benefits it offers before making a decision to invest. With over 5,000 machines delivered in the UK alone, it’s likely we have equipment installed close to you, but we do understand the benefit of seeing a machine treating the unique wastewater generated at each site. With this in mind, HUBER Technology offers a range of trial units to demonstrate the suitability of our technology, allowing customers to gain confidence and make an informed decision before purchasing. In many cases, site trials also provide an opportunity to optimise the process since HUBER trial units are full size (rather than pilot) offering all of the features of the permanent plant. Trial equipment currently includes various sizes of: HUBER Screw Press Q-PRESS® - Sludge Dewatering HUBER Screw Press S-PRESS - Sludge Dewatering HUBER Disc Thickener S-DISC - Sludge Thickening HUBER Sludgecleaner STRAINPRESS® - Sludge Screening HUBER Dissolved Air Flotation (DAF) HDF - Wastewater Treatment HUBER Micro Strainer ROTAMAT® Ro9 - Inlet Screen (tank-mounted and channel options) HUBER Sludge Acceptance Plant ROTAMAT® Ro3 - Coarse Inlet/Sludge Screen HUBER Screenings Wash Press WAP® - Screenings and Gross Material Compaction HUBER Disc Filter RoDisc® - Polishing Filter HUBER Heat Exchanger RoWin - Heat Recovery from Wastewate r Depending on the process, trial units can be provided with control panel & level control, feed & forwarding pumps, polymer batching & dosing equipment and tanks for mounting screens in. Some units are provided as plug-and-play skids/containers, only requiring power and connecting pipework to be provided and connected by site. After installation, a HUBER commissioning engineer ensures the equipment is operating correctly and is optimised, as well as providing full operator training. Trials will typically be run over the course of a few weeks, enabling the plant to demonstrate performance against normal production variations. The trial period offers full visibility of typical operational requirements, so that these can be compared to alternatives. Finally, if trialling a sludge treatment unit, the treated material can be sent to potential alternative disposal sites for approval, before committing to the permanent plant. For further details, and to discuss you specific requirements, please contact one of our UK Area Managers . HUBER container system rental: cost-efficient, flexible and reliable Economic advantages Fast solution without capital expenditure Plannable operating costs due to constant rental costs over the entire term Positive tax benefits, rental costs as operating expenses Best available technologies Comprehensive support Expert advice and problem solving by our HUBER project and process managers Preliminary tests in the laboratory or on site, we determine the relevant operating parameters and effluent values Training and supervision of operating personnel Short-term availability Ready for use immediately without structural measures Fast implementation of the project thanks to extensive rental fleet No lengthy procurement processes Reduced planning and approval effort Minimised downtime due to fast availability Individual commissioning Fast and efficient commissioning by our experienced technicians Ready for use in just a few hours Adjustment and commissioning directly on site Efficient use thanks to adaptation to individual conditions Quick assembly and disassembly Plug-and-play principle requires no complex installation Easy to transport and quick to set up on site Including necessary equipment such as pumps, valves, etc. After-sales service Worldwide availability Permanent support from our HUBER SERVICE Includes maintenance contract and reliable spare parts supply Ensure continuous operational readiness[...]