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[...]Classifying and washing in one system Reduced disposal costs Low investment costs Over 90% separation efficiency of grain size > 0.2 mm Reduction of organic content to < 5% Also suitable for classified grit trap material from biogas plants The Grit Washer RoSF G4E combines continuous separation and washout of contaminated grit trap material in one plant. Design and function Grit classifying Sediments from the grit trap are introduced in the upper part of the plant as a mixture of grit, organics and water. Due to the low surface overflow rate virtually all particles are separated and accumulate in the bottom part of the tank. Grit washing Due to the introduction of service water in combination with a slowly rotating circulation system the lighter organic particles can easily be separated from the dense mineral particles in the bottom part of the tank. After removal of the organic material the clean grit is auto-matically removed by a screw conveyor, at the same time statically dewatered, and discharged into a container. The removed organics are continuously discharged with the introduced wash water. The benefits of the HUBER Grit Washer RoSF G4E Reduced disposal costs Reduced water consumption below 2 m3/h Surface overflow rate < 25 m/h 90% separation efficiency of grain size > 0.2 mm Reduction of organic content to ≤ 5 % Dry residue in washed grit > 90% Screened wastewater can be used as wash water Two plant sizes available (8 l/s and 16 l/s throughput) Optionally available as a classifier with wash function Also suitable for classified grit trap material from biogas plants[...]

[...]Thickening of municipal and industrial sludges Compact, enclosed design Efficient, reliable and easy to operate Low operation and maintenance costs More than 700 installations worldwide prove the reliability of theHUBER Rotary Screw Thickener S-DRUM. Thickening results greater than 7% dry solids are achieved in typical municipal applications with a polymer consumption of 6-10 lbs. a /DT (dry ton) / 3-5 g/kg, and spray water demand is approximately 40 GPM / 25 l/m³. Different system sizes are available for throughputs from 88 - 440 GPM / 20 - 100 m³/h per unit. Design and Function The HUBER Screw Thickener S-DRUM features a flocculation reactor with a stirrer to ensure efficient sludge treatment. The thickener consists of a cylindrical wedge-section basket that retains the solids from the incoming sludge. A slowly rotating, variable-speed screw gently conveys the solids upward through the inclined basket, allowing water to drain through the basket. The degree of thickening can be adjusted by a height-adjustable weir plate at the sludge discharge and by varying the screw speed. A rotating spray bar periodically cleans the wedge wire from the outside during screw operation, ensuring continuous performance. The Benefits of the HUBER Rotary Screw Thickener S-DRUM Sludge volume reduction by up to 80 % Sturdy design for high solids loads and coarse material containing sludge Maximum system availability is ensured by the virtually wear-resistant and clog-free stainless steel wedge-section basket High operational reliability due to the slow screw speed Low power and spray water consumption No need for lubrication Completely encapsulated, odor-free plant No vibration Low noise < 68 dB(A)[...]

[...]Very low polymer consumption High throughput capacity Reliable operation The purpose of sewage sludge thickening Sewage sludge, particularly secondary sludge, is charac­terised by low solids concentrations and therefore big vo­lumes. Good sludge thickening is required as a prerequi­site for the efficient further treatment of sewage sludge, for example in digesters, and is also necessary where liquid sewage sludge is transported to further treatment steps or utilisation. The following criteria are decisive for the selection of the thickening process: Efficiency Performance Reliability Design and Function Polymer is added to the thin sludge and the sludge condi­tioned in a flocculation reactor prior to being distributed evenly over the full width of the continuously travelling filter belt. The water filtered through the belt filter cloth drains off into collection troughs whilst the solids are retained on the filter belt. Chicanes furrow the sludge to facilitate drainage and support the production of a concentrated sludge cake. The initial thin sludge volume is reduced by approx. 85 %. The sludge cake is dischar­ged into a collection trough from where it is removed by an eccentric screw pump for example. A spray bar cleans the filter belt while it travels back. The benefits of the HUBER Belt Thickener DrainBelt Efficiency Sludge volume reduction up to > 85% Typical thickening results > 6% DR Minimised polymer consumption, normally only 2 – 3 g effective substance/kg DM Low energy consumption Belt filter cleaning with filtrate water as spray water Reliable technology Long filter cloth life due to the slow filter belt velocity of < 20 m/min Minimised wear of the plastic chicanes Encased thickener suitable for the treatment of strong-smelling sludge, protecting operators against harmful spray water aerosols Big inspection openings to facilitate maintenance Easy to operate and maintain High performance Large active filter surface Very long thickening zone Increased filtration results through repeated sludge restacking Increased thickening results due to a ramp installed to decelerate the sludge prior to being discharged Selectable filter cloth options to meetspecific requirements High specific throughput capacity up to 45m3/h per metre of filter belt width[...]

[...]Access door for the field of potable water supply, especially in areas where flooding is likely Exterior door, flood proof up to a water gauge of 6.5 ft. / 2 m, opening to the outside (pressure side), ready for installation, single-leaf, double skinned, completely made from 1.4307 stainless steel (AISI 304 L). The door and the frame closing flush. The door leaf has a thickness of 57 mm, with 3 mm sheet thickness on both the pressurized and non-pressurized sides. It is insulated with injected, CFC-free polyurethane hard foam and features a longitudinally ground surface finish. The door is equipped with a special seal around all four sides and is mounted to the frame using stable, maintenance-free hinge plates. The lock is prepared for an onsite profile half-cylinder, lockable from the outside. The door is secured with a locking lever that can be operated from both sides. The frame is constructed from a special profile, with continuous insulation on all four sides using injected, CFC-free polyurethane hard foam. It comes with the necessary fixing materials. The gap around the frame, between the frame and the wall, must be sealed using the supplied sealing material. Door leaf and frame welded under inert gas, pickled in an immersion bath and passivated. Max. permitted leakage rate: 2 gallons/day - 0.3 litres/hour. Options General Options: 1.4404 (AISI 316 L) stainless steel Anchor hooks on the door leaf, which engages positively in the frame when closed Upper door closer is lockable in position Surface finish (painted outside with or without anti-graffiti finish) Magnetic contact: „Door open“ or „Door closed“ status display Lock-bolt contact: „Bolt open“ or „Bolt closed“ status display Potential equalization on frame Steel sheet finish for exterior door surface for installations exposed to sunlight Ordering options: Frame mounting: Bolted with dowelling clips Bolted through the frame Door opening options: Hinges on left Hinges on right[...]

[...]High grit separation efficiency through tangential wastewater inflow Optional with integrated grit classifying screw Compact, space-saving unit Stainless steel tank design Applications Wastewater treatment plants Process water treatment Solids / liquid separation in general Design and Function Separation of the grit particles in the HUBER Circular Grit Trap HRSF is supported by the rotational motion of the wastewater. The separation effect is generated by overlapping of the vertical downward motion and a developing centrifugal force acting on the individual grit particles. The inner tank surface serves as the separation area. To increase the separation area, the HUBER Circular Grit Trap HRSF has an additional separation cone for a reliable maximum separation performance. For improved separation of organics from grit, the option for air intake via an aeration system is provided. Organic components are kept floating and are discharged with the water flow above the separator cone. The separated solids are removed from the plant either directly by means of an integrated classifying screw, or pumped into a grit classifier. The layout of the HUBER Circular Grit Trap HRSF was made on the basis of numeric design engineering and tested and verified under practical conditions in collaboration with the German test institute LGA. Benefits of the HUBER Circular Grit Trap HRSF Maximum separation efficiency due to additional separation area (separator cone) Throughput capacity up to 150 l/s (540 m³/h) Compact, space-saving unit Encapsulated, odour-free plant Completely made of stainless steel for high corrosion resistance Optional with integrated grit classifying screw Optional with scum separator and aeration[...]

[...]Exceptional separation efficiency of up to 75 micron Compact design and small footprint Integrated floating material separation Ideal for high grit loads The new HUBER Grit Trap GritWolf® is different from space-consuming aerated grit channels as it consists of a dual-chamber configurationthat combines an aerated and an unaerated grit trap chamber. Applications: New wastewater treatment plants Retrofit of Aerated Grit Chambers Pre-treatment for membrane bioreactors (MBRs) Design and Function In the first, smaller chamber of the HUBER Grit Trap GritWolf®, wastewater undergoes medium-bubble aeration, causing floatable particles to rise to the surface where they accumulate. These particles are then removed by a paddle system just before the outlet. The second chamber is unaerated and features lamella units. Thanks to the deep flow design and the benefits of the lamella separator, the GritWolf® efficiently removes even the finest grit particles. The grit trap tank is typically constructed from concrete, although stainless steel tanks are available as an option for smaller plant sizes. The GritWolf® can also be seamlessly integrated into existing grit trap chambers. Both the horizontal grit conveyor, the lamella packages, and the paddle system for grease removal are made from corrosion-resistant materials for long-lasting performance. The grit is extracted axially from the HUBER Grit Trap GritWolf® using a time-controlled horizontal screw conveyor. This ensures that even large accumulations of grit, such as "sand dunes" formed during stormwater flushes, are evenly fed into the suction area of a grit pump. The grit pump then transports the grit-water mixture to the HUBER Coanda Grit Washer RoSF4, where it undergoes a proven cleaning process to produce high-quality, clean grit, completing the entire grit treatment system. Benefits of the HUBER Grit Trap GritWolf® High separation efficiency with 95% separation of particles ≥ 75 micron Compact and space-saving design with small footprint Efficient grit handling with horizontal screw conveyor ensuring a controlled and regulated supply of grit to the grit pump Low pressure loss with minimal energy consumption Integrated floating material separation with an optional automatic forced removal system Reduced organic content, achieves a loss on ignition < 3% with downstream grit washing[...]

[...]Designed in accordance with DWA standards or customised design Available with or without aeration Optional separate grease chamber with automatic grease removal Manufactured entirely in stainless steel Grit separation from wastewater will prevent operational problems, such as grit sedimentation, increased wear, and blockages. Design and Function Grit separation The grit chamber design It is available in both aerated and unaerated versions. The choice between the two options depends on factors such as the storm-to-dry weather flow ratio and whether additional grit treatment systems are planned or in place. Grit removal The horizontal grit conveyor moves the separated grit particles to the inclined grit removal screw within the grit trap. The inclined screw dewaters the material and discharges the compacted grit into a container or directs it to a subsequent HUBER Coanda Grit Washer RoSF4 T . Alternatively, the grit can be pumped to the grit washer. Grease separation and removal The separation of fats and grease is possible only when using aerated grit channels. The grease is collected in a separate chamber, with a slotted scum board acting as the partition between the grit trap and grease chambers. The aeration system within the grit trap chamber generates flow that carries the grease through the slotted scum board into the grease chamber. Unlike many competitor systems, the HUBER Longitudinal Grit Trap ROTAMAT® Ro6 ensures the forced transport of grease separated on the water surface into the grease collection tank. This is achieved through an integrated grease removal paddle, which features a guided scraper that effectively removes the grease layer from the grease chamber. The paddle ensures thorough grease removal along the entire length of the grit trap, preventing any anaerobic digestion process that could result from incomplete grease removal. Optional integrated grit washing In this system, the horizontal grit conveyor transports the separated grit directly to an integrated grit washer at the Complete Plant outlet. Service water is introduced upward into the lower part of the grit washer, fluidizing the grit and allowing the lighter organic particles to separate from the denser grit. This separation process is aided by a stirrer rabble rake . Once the organic material is removed, the clean grit is automatically collected by a classifying screw, dewatered statically, and then discharged into a container. The benefits of HUBER Longitudinal Grit Trap ROTAMAT® Ro6 High separation efficiency of 90% at maximum flow (Q max ) , capturing grit particles as small as 200 microns High throughput capacity up to 6 MGD / 300 l/s / 1,080 m³/h Optional separate grease chamber with automatic removal Completely encased unit Flexible installation options above ground or below ground Optional integrated grit washing Durable stainless steel construction of the entire system, including the screws[...]

[...]Super Launder Wash Press for disposal cost reduction Reduced volume, weight and disposal costs up to 85 % Compaction up to 50 % DR High washed screenings quality of (< 20 mg BOD5 / g DR) Disposal costs reduced up to 10 % compared to simple wash press systems The HUBER Screenings Wash Press WAP® SL operates in a batch mode. The screenings are either deposited directly into the wash press trough from a screen or conveyor, or they are flushed into the trough via a launder channel. This flexible system ensures efficient handling and processing of screenings, depending on the specific installation setup. Once a batch of screenings is fed into the wash press trough, it is filled with wash water. An impeller then agitates the mixture for a set period, creating high turbulence. This intense agitation loosens and removes organic matter and other organic particles from the screenings through shear forces, ensuring effective cleaning and dewatering. Design and Function Once the washing cycle is complete, an automatic valve opens, allowing the wash water to drain through perforations in the trough. In the next step, the washed screenings are discharged, and the compaction and dewatering process occurs simultaneously, all in a single operation, ensuring efficient handling and processing of the screenings. The screw then pushes the screenings through the pressure zone, where they are compressed, dewatered, and compacted. After this, the screenings are discharged through the discharge pipe, either into a dumpster for disposal or into a bagger for further handling. This final step ensures that the screenings are efficiently processed and ready for disposal or transport. Feeding through a HUBER Launder Channel HLC The screenings drop from the screen or conveyor into the HUBER Launder Channel HLC. Screened wastewater or process water is then used to flush the screenings through the launder channel into the trough of the HUBER Screenings Wash Press WAP® SL. This flush water also serves as the wash water in the trough, ensuring effective cleaning and dewatering of the screenings during the washing process. Feeding Directly from a Screen or Conveyor The screenings drop directly from the screen or conveyor into the trough. Screened wastewater or process water is then introduced directly into the trough, where it serves as wash water to clean the screenings during the washing process. The HUBER Launder Channel HLC Feed System for Screenings Wash Presses The HUBER Launder Channel operates either in a discontinuous batch mode or continuously, depending on the system configuration. The screenings to be treated drop into the launder channel from one or more screens. Wastewater or service water is then used to flush the screenings into the wash press, where it also serves as wash water for the screenings washing process. Any free transport water is returned to the system through a perforated plate, ensuring efficient water reuse and minimizing waste. HUBER Launder Channel HLC systems are highly adaptable to meet customer-specific requirements. To ensure maximum operational reliability, the launder channel control system can be configured to use redundant wash press systems. This setup allows the individual units to be operated as needed, with valve control managing the flow to each unit, ensuring continuous operation and reducing the risk of downtime during maintenance or unexpected issues. Benefits of the HUBER Launder Channel Feed System Cost-effective, low maintenance solution High operational reliability Up to 131 ft. / 40 m channel length Customizable discharge configurations enabled by the flexible arrangement of the launder channel Wastewater or service water as flushing water Stainless steel design for corrosion resistance The benefits of HUBER Screenings Wash Press WAP® SL Extremely clean screenings with a reduction in volume, weight, and disposal costs of up to 85% High-intensity washing in launder tank Washed screenings quality < 20 mg BOD5 / g DR Compaction up to 50 % DS Screenings processing capacity of up to 52 GPM / 12 m3/h Screened wastewater or process water can be used as wash water Robust and long-lasting design All structural parts, including the screw, are made of stainless steel to prevent corrosion Quick payback achieved through significant savings in transportation and disposal costs Reduction of disposal costs by up to 10 % compared to simple wash press systems[...]

[...]Simple process for the removal of trace substances (fourth treatment stage) No shutdowns necessary for cleaning Reuse of the activated carbon Especially municipal sewage plant effluents are among the most critical paths of entry for micropollutants into surface waters. Many of these so-called trace substances are hazardous to the environment and health, are not readily biodegradable and can accumulate in the environment. With the HUBER Active Carbon Filter CONTIFLOW® GAK, HUBER has developed a versatile and reliable key component for the removal of trace substances (fourth treatment stage), which, cleverly combined with the HUBER Pile Cloth Media Filter Rotafilt® or the HUBER Sandfilter CONTIFLOW® , represents an ideally matched process solution. However, also in industrial wastewater treatment, the HUBER activated carbon filter CONTIFLOW® GAK finds a steadily growing field of application. Especially when it comes to removing dissolved organic COD compounds and pollutants to meet stricter discharge criteria, adsorptive treatment stages with the HUBER Active Carbon Filter CONTIFLOW® GAK are the technology of choice. Design and Function The HUBER Active Carbon Filter CONTIFLOW® GAK is an upflow active carbon adsorber with granulated activated carbon (GAC) as filling. It has a modular design and is available as a stainless steel tank or optionally as concrete construction. The HUBER Active Carbon Filter CONTIFLOW® GAK is designed for continuous operation. This means that no feed interruptions are necessary for cleaning the activated carbon. As the inflow slowly streams through the activated carbon bed from bottom to top, dissolved organic particles such as trace substances are adsorbed on the large inner surface of the activated carbon. The purified water flows off via a weir in the upper part of the filter. As the pressure loss increases, the activated carbon is gently conveyed from the bottom of the hopper into the scrubber located at the top, where it is cleaned from particulate residues. The particles are separated with a small partial flow, the so-called wash water. The activated carbon, which has been cleaned of solids but is still partially loaded with micropollutants, then falls back down onto the filter bed, creating an internal activated carbon circuit. As operation progresses, the loading on the internal surface of the carbon slowly increases. Applications Adsorption of trace substances in advanced wastewater treatment (fourth treatment stage) Biological secondary filtration for the removal of trace substances following ozonisation (BAC filtration) Removal of dissolved COD compounds in industrial wastewater treatment (process wastewater, recirculation water) The benefits of the HUBER Active Carbon Filter CONTIFLOW® GAK Easy to retrofit on existing sewage treatment plants due to modular design No complex carbon dosing technology as with PAC processes No dirt and dust loads as with PAC processes No precautions for explosion protection as with PAC processes No secondary filtration required as with PAC processes No shutdowns necessary for cleaning the activated carbon bed Activated carbon can be regenerated and largely reused[...]

[...]Reliable separation of fine suspended solids (sludge flocs, microplastics) Ideal for phosphorus removal (flocculation filtration) Reliable retention of powdered activated carbon (PAC) for removal of trace substances Efficient prefiltration to protect ozonation and GAC adsorption systems for trace substance removal A pile cloth is a fabric in which pile yarns are firmly bound onto a supporting mesh, creating a three-dimensional structure. The solids are retained by this pile cloth, while the cleaned water enters the interior of the filtration system and is led via a weir to the next stage or into the receiving water. Materials of HUBER Pile Cloth Media Filter RotaFilt®: All metallic parts made of stainless steel (stainless steel parts acid treated in a pickling bath) Disc support segments made of high-quality plastic with optimised free surface; uncomplicated replacement of segments and pile cloth media bags The right type of pile cloth for every application Design and Function The HUBER Pile Cloth Media Filter Rotafilt® consists of several rotatably arranged, disc-shaped filter elements. These are installed vertically and fitted with special filter bags made of innovative pile cloth. The pile cloth has a multi-dimensional structure and consists of a filter-active pile cloth layer and a supporting mesh. The wastewater that enters the filter chamber flows continuously through the individual filter discs from the outside to the inside. Particulate matter is reliably retained in the pile cloth structure. Due to the retention of solids, the filter resistance increases and the difference between the water levels on the wastewater and clear water side rises. At a certain pressure loss, 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. In order to prevent the basin from silting up, the settled sludge at the bottom of the basin is sucked out at regular intervals. Technical data: Available disc diameters: 2,200 mm and 2,700 mm, RotaFilt® 2,200 is available as a basin or tank version. All metallic parts made of stainless steel, acid treated in a pickling bath. Disc support segments made of high-quality plastic with optimised free surface; uncomplicated replacement of segments and pile cloth media bags. The right type of pile cloth media for every application. Feeding either by gravity or by pump. The benefits of the HUBER Pile Cloth Media Filter RotaFilt® Optionally one or more suction pumps. Suction pumps installed wet or dry. Increased effective filter area due to circular arc geometry on inner and outer diameter. Complete cleaning of the filter discs, no dead zones. Maximised free filter area and minimal disc weight due to the innovative honeycomb structure of the filter elements. Cost advantages due to optimised disc diameter. Quick and user-friendly installation and removal of filter bags and filter elements. Easy installation and removal of the suction modules. Many advantages through microfiltration with pile fabric High separation efficiency combined with high hydraulic capacity. Insensitive to sudden peak loads. High operational reliability, even under overload. No separate flushing water required, thus no flushing water tank required. Continuous operation (no interruptions for cleaning). Low pressure loss during operation (5-30 mbar, hydrostatic filtration possible without lifting). Minimal system footprint. Minimised operating and energy costs.[...]