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[...]Elimination and reduction of micropollutants with the PAC process Trace substances can be removed from wastewater with the help of powdered activated carbon (PAC), as the micropollutants adsorb to the activated carbon. Powdered activated carbon is ground activated carbon. According to DIN 12903, at least 95 percent of the mass fraction must have a grain size of less than 150 µm. The average particle diameter of typical powdered activated carbons is approximately in the range of 10 µm to 50 µm. For the elimination of micropollutants, the powdered activated carbon is added directly to the wastewater to be treated. The activated carbon can be added at different points in the wastewater treatment process (simultaneous process). In the "Ulm process", a separate adsorption tank is used after the biological stage. There, fresh activated carbon is added to the treated wastewater. PAC Powdered Activated Carbon In principle, it is important that the process ensures sufficient contact time so that the trace substances can adsorb to the powdered activated carbon. The powdered activated carbon must then be separated from the treated wastewater. This is usually done after precipitant addition in a sedimentation tank, where some of the separated carbon is discharged as excess carbon together with the excess sludge and some is returned to the contact tank as return carbon. Due to the recirculation, the activated carbon remains in the wastewater treatment process for several days. It is very important that the treated wastewater is free of activated carbon before it is discharged into the receiving water. The powdered activated carbon (PAC) should be separated as completely as possible from the treated wastewater. For this reason, a downstream filtration stage (polishing filter) is necessary that is able to retain any remaining fine carbon particles. The HUBER Pile Cloth Media Filter RotaFilt ® is an ideal product solution for this purpose. The polishing pile cloth filter reliably retains even the finest carbon slip that could not be separated in the sedimentation tank. As an alternative to the pile cloth media filter, the HUBER Sandfilter CONTIFLOW® can be used as a proven and reliable polishing stage to retain the ultrafine activated carbon particles.[...]

[...]Micro Screens and Filter Advanced wastewater treatment for removal of suspended solids to improve clarifier effluent quality Products for Micro Screening and Filtration Disc Filter Pile Cloth Media Filter Sandfilter Active Carbon Filter Reliable and innovative solutions for advanced wastewater treatment HUBER offers reliable and innovative solutions for advanced wastewater treatment by means of filtration, active carbon filtration, micro-screening and pile cloth media filtration. This leads to a significant effluent quality improvement in addition to the following treatment stages - for biologically treated wastewater and for raw wastewater. Filtration of biologically treated wastewater serves for removal of suspended solids remaining in clarifier effluents. Such suspended solids contain about 50 % carbon, almost 10 % nitrogen and over 1 % phosphorus. Around 1 mg/L (ppm) of phosphorus remain in the effluent, even if the biological treatment stage is designed for enhanced biological phosphorus removal and/or chemical phosphorus precipitation. Subsequent filtration is necessary where stringent phosphorus limits must be reliably maintained. Micro-screening is also possible for the treatment of raw wastewater which is discharged into the watercourse. Thereby almost all solids and, if required, also phosphates are removed.[...]

[...]On Tuesday, 18 April, the advisory board meeting of the Bavarian regional association of the German Association for Water, Wastewater and Waste (DWA) took place at HUBER SE. HUBER hosted the meeting in the person of DWA Advisory Board member and Sales Director Rainer Köhler, which concluded with a tour of the production halls at the company's headquarters in Berching/Erasbach. After the official welcome, the agenda of the meeting included brief annual reports, an exchange on current challenges in the water industry, news from the federal office and the annual goals of the Bavarian regional association, before honours and the election and re-election of advisory board members were held. At the end of the one-day meeting, interested participants could join a factory tour. Rainer Köhler: ”Exchange about current challenges more important than ever” ”We are very pleased that the advisory board meeting of the DWA Bavarian Association could take place at HUBER this time. The exchange about current challenges in water management is probably more important today than ever before. The highlight at the end was a factory tour, which was positively received by the DWA Advisory Board members,” said Rainer Köhler. About DWA The German Association for Water, Wastewater and Waste (DWA) is committed to the development of safe and sustainable water management. It is a politically and economically independent organisation and the association with the largest membership in the fields of water management, wastewater, solid waste and soil protection. About 14,000 members represent experts and executives from municipalities, universities, engineering offices, authorities and companies. Interested participants joined a factory tour at the end of the meeting Interested participants during a HUBER SE factory tour.[...]

[...]Aeration/deaeration plant, max. throughput 250 m³/h Natural aeration/deaeration plant with air connections on both sides to improve the hygiene in drinking water reservoirs. Completely made of 1.4307 (AISI 304 L) stainless steel except the filter material, shielded arc welded, acid-treated in a pickling bath and passivated. Ready-to-operate installation, without brickwork, plastering, chiselling and electrical work, without drain pipe. Louvre , attack-proof, pre-finished, rigid design, with a stable frame, slats and 1 x 1 mm insect screen. The insect screen serves as first filter stage and prevents the ingress of small animals, insects and organic coarse material. Minimum size 500 x 300 mm. Air line in partial lengths according to the specific local conditions, with a connecting plate designed to suit the louvre (item 1.0) for air-tight bolted fixing to the interior structure wall, with pipe connection piece. Pipeline longitudinal welded seam stainless steel pipe, bends as required, flexible joints, including fixing material, foam rubber gasket and mounting brackets. Cylindrical air filter unit L251, with connection pieces on both sides, suitable for the air line, with filter for suspended matter H13, with central 1/2“ condensate drain and ball valve for connection to the customer’s drain pipe. The air filter unit is designed for installation directly into the air line. The air filter unit houses a filter for suspended matter that achieves a separation degree of up to 99.99% in accordance with DIN EN 1822 for optimal supply air purification. The inspection opening in the casing ensures easy filter replacement. A pressure transducer controls filter pollution. Safety valve type 170-1 as an additional overpressure/underpressure protection for the structure in case of malfunctions. The reaction pressure is 1000 Pa. Options General Options 1.4404 (AISI 316 L) stainless steel Radial pipe ventilator for installation in DN variable air line, for forced ventilation With power supply unit for regulating the pressure transducer from 230V to 24V Optional equipment and spare parts Suspended material filter , filter class H13, separation efficiency 99.99% in compliance with DIN EN 1822, for type L251.[...]

[...]Aeration/deaeration plant, max. throughput 300 m³/h Natural aeration/deaeration plant with air connections on both sides to improve the hygiene in drinking water reservoirs. Completely made of 1.4307 (AISI 304 L) stainless steel except the filter material, shielded arc welded, acid-treated in a pickling bath and passivated. Louvre, attack-proof , pre-finished, rigid design, with a stable frame, slats and 1 x 1 mm insect screen. The insect screen serves as first filter stage and prevents the ingress of small animals, insects and organic coarse material. Air line in partial lengths according to the specific local conditions, with a connecting plate designed to suit the louvre (item 1.0) for air-tight bolted fixing to the interior structure wall, with pipe connection piece. Cylindrical air filter unit L252 , with connection pieces on both sides, suitable for the air line, with filter for suspended matter H13, with central 1/2“ condensate drain and ball valve for connection to the customer’s drain pipe. The cylindrical air filter unit is designed for installation directly into the air line. The air filter unit houses a filter for suspended matter that achieves a separation degree of up to 99.99% in accordance with DIN EN 1822 for optimal supply air purification. Safety valve type 170-1 as an additional overpressure/underpressure protection for the structure in case of malfunctions. The reaction pressure is 1000 Pa. Options General Options 1.4404 (AISI 316 L) stainless steel Radial pipe ventilator for installation in DN air line, for forced ventilation With power supply unit for regulating the pressure transducer from 230V to 24V. Optional equipment and spare parts Suspended material filter, filter class H13, separation efficiency 99.99% in compliance with DIN EN 1822, for type L252[...]

[...]Aeration/deaeration plant, max. throughput 720 m³/h Natural aeration/deaeration plant with air connections on both sides to improve the hygiene in drinking water reservoirs. Completely made of 1.4307 (AISI 304 L) stainless steel except the filter material, shielded arc welded, acid-treated in a pickling bath and passivated. Louvre, attack-proof , pre-finished, rigid design, with a stable frame, slats and 1 x 1 mm insect screen. Air line in partial lengths according to the specific local conditions, with a connecting plate designed to suit the louvre for air-tight bolted fixing to the interior structure wall, with pipe connection piece. Air filter unit L361 with connection pieces on both sides, suitable for the air line, with fine filter and filter for suspended matter, with two DN 1/2“ stainless steel condensate drains upstream and downstream of the filter package, each with check valve, including wall mounting brackets. The air filter unit is designed for installation directly into the air line. The fine material filter installed in the air line is filter class ISO ePM10 75% according to EN ISO 16890 and serves as second filter stage. The fine filter is required to increase the lifetime of the subsequent suspended material filter as third filter stage. This filter is filter class H13 with a separation class H13 of at least 99.99% in compliance with DIN EN 1822. Both filters consist of a germ-killing material that ensures the drinking water hygiene even under high loads and air moisture. Safety valve as an additional overpressure/underpressure protection to protect the structure in case of malfunctions. The reaction pressure 1000 Pa. Options Optional equipment and spare parts Fine filter, filter class ISO ePM10 75%, in compliance with EN ISO 16890, for type 361. Suspended material filter, filter class H13, separation efficiency 99.99% in compliance with DIN EN 1822, for type 361. Other Options 1.4404 (AISI 316 L) stainless steel Radial pipe ventilator for installation in DN air line, for forced ventilation With power supply unit for regulating the pressure transducer from 230V to 24V.[...]

[...]Aeration/deaeration plant, max. throughput 3000 m³/h Natural aeration/deaeration plant with air connections on both sides to improve the hygiene in drinking water reservoirs. Completely made of 1.4307 (AISI 304 L) stainless steel except the filter material, shielded arc welded, acid-treated in a pickling bath and passivated. Security louvre , attack-proof, pre-finished, rigid design, with a stable frame, slats and 1 x 1 mm insect screen. Air line in partial lengths according to the specific local conditions, with a connecting plate designed to suit the louvre for air-tight bolted fixing to the interior structure wall, with pipe connection piece. Air filter unit L661 with connection pieces on both sides, suitable for the air line, with pre-filter and filter for suspended matter, with two DN 15/2” stainless steel condensate drains upstream and downstream of the filter package, each with ball valve, including wall mounting brackets. The air filter unit is designed for installation directly into the air line. The pre-filter installed in the air line is filter class ISO ePM10 75% according to EN ISO 16890 and serves as second filter stage. The pre-filter is required to increase the lifetime of the subsequent suspended material filter as third filter stage. This filter is filter class H13 with a separation rate of at least 99.99% in compliance with DIN EN 1822. Safety valve as an additional overpressure/underpressure protection to protect the structure in case of operating troubles. The response pressure is 1000 Pa. Options Optional equipment and spare parts Pre-filter of filter class ISO ePM10 75% in compliance with EN ISO 16890 Suspended material filter, filter class H13, separation efficiency 99.99% in compliance with DIN EN 1822, for type L661 Other Options 1.4404 (AISI 316 L) stainless steel Radial pipe ventilator for installation and for forced ventilation With power supply unit for regulating the pressure transducer from 230V to 24V[...]

[...]Schnaittachtal, Germany The Schnaittachtal sewage treatment plant has been in operation for almost 50 years and currently employs six male and one female sewage treatment operators. For many years, the plant has relied on HUBER machines for mechanical wastewater treatment, such as the HUBER Screenings Wash Press WAP® Ro4-OS, HUBER Screw Conveyor Ro8 and HUBER STEP SCREEN. These have now been replaced by a new HUBER Rotary Drum Fine Screen ROTAMAT® Ro2 size 1600 with a 3 mm bar spacing, a HUBER Screw Conveyor Ro8 T and HUBER Screenings Wash Press WAP® SL. A quarter of a century in service In service since 1999, the STEP SCREEN, which was well known at the time for its mechanical efficiency, was taken out of service in August 2024. After this long operating period of around a quarter of a century, the separation performance declined, partly due to age and partly due to changes in the wastewater inflow conditions, such as flushing loads and changes in screenings, so that the downstream processes could no longer run optimally. Increased efficiency thanks to modern screening technology The new screening system is a more efficient solution. It is also easier to maintain. Consequently, the STEP SCREEN offered a low financial return. Due to the load it was subjected to, the STEP SCREEN was estimated to have a service life of 15 to 20 years. The regional characteristics near Neunkirchen am Sand already provide an indication of what has also contributed significantly to the wear and tear of the screen. Significant relief for the entire plant The entire plant has been significantly relieved thanks to the new HUBER Rotary Drum Fine Screen ROTAMAT® Ro2, which has decreased the loads in the other areas of the wastewater treatment plant. This is because the new screen's high efficiency makes it much easier to retain and safely remove even the smallest residues from the wastewater stream. This is also reflected in the amount of screenings now being produced. It has doubled compared to the old STEP SCREEN. Structural challenges successfully overcome Initially, there were space-related challenges involved in replacing the system. This was due to the space required for the new screen, which is twice the size of the STEP SCREEN. Instead of 80 cm, 1.6 m was now required, as a wider channel was needed for the system. The conversion, including the removal of the main screen, the installation of the new channel and the reinstallation, was carried out quickly in just four weeks. Precise planning and project management are the keys to success The fact that this challenging conversion, involving the redesign of the entire inlet area and the replacement of the sewage lifting screws, could be completed within this time frame was also made possible by the perfect planning and project management by the commissioned engineering firm Miller from Nuremberg. We would like to thank everyone involved in the project, especially the employees of the Schnaittachtal sewage treatment plant, for the trust they placed in us and for the excellent cooperation.[...]

[...]Dublin, Ireland[...]

[...]Westnewton , UK Westnewton WwTW is located close to the Solway Coast and treats a population equivalent of 275. Flows arrive at a terminal pumping station off site and is pumped up to the WwTW for treatment. After treatment flow exits the works into Westnewton Beck. HUBER Technology supplied, installed and commissioned a duty/standby 3 mm 2D inlet screening package also incorporating a handraked bypass channel with a 12 mm bar screen fitted and local control stations to the Contract Delivery Partner (CDP) C2V+. This equipment is located upstream of a Nereda® process specifically designed for smaller works. (Royal HaskoningDHV has developed small (Package) and medium scale (Mini) solutions for 200-2,000 PE and 2,000-5,000 PE respectively, with support from UU and C2V+ United Utilities’ construction design partner.) This scheme sought to use as much equipment delivered in the DfMA (built off sire) format as possible and from HUBER Technology’s perspective, this opened up the opportunity to develop this further with Advance plus and C2V+, the CDP’s for United Utilities. As a result of this together we developed a truly collaborative way of working to reduce costs and improve efficiencies to deliver United Utilities (UU) AMP7 programme. The approach focused on partnership, collaboration, trust that compliment UU AMP7 requirements to outperform against their Company Business Plan (CBP) and benefit all parties. The solution was initially developed on Advance-plus projects at Southwaite and Greystoke WwTW. It was subsequently adopted by C2V+ at Gawsworth WwTW with several other projects in the pipeline. The highlights of this approach are: A £30K (35%) saving in capital cost against a bespoke solution at £80k. An annual ongoing saving of £8,600pa against historical, conventional installations. Utilisation of standard steel products instead of bespoke civil channels – saved £11k – 12% i.e.: Standard off-the shelf designs. Simplified asset standards. Reduced civil construction. DfMA off-site build saved £15k – 18% i.e.: 5 weeks site time saved. Safer assembly. Lower carbon solutions >70% reduction. Less waste. Factory based quality assurance (100%). Less travel and fuel costs. Interface management and out-turn cost certainty. Offsite testing and dry commissioning. Programme and design work saved £4.1k – 5% - Common product specifications and configuration, reduced design turbulence – less iteration i.e.: Estimating – standard estimating blocks. Procurement – Avoidance of multiple quotes, proforma subcontract (proforma agreements). Planning & Scheduling – standard timeframes for procurement lead time, installation and commissioning. Safety - Template HAZOP and Access, Lifting and Maintenance (ALM) agreements, reduced travel and meetings (Do it once). Standard commissioning protocols, maintenance and spares familiarity. Agreed OPEX costings for Investment Appraisal Analysis and WLC reporting. Ongoing savings through. Lower operating costs – defined by the historical data findings. Operator familiarity. Ongoing 35% capital savings on future schemes. £8,600pa – maintenance and operating costs. This piece of work was shortlisted for the 2021 Water Industry Awards for the Alliancing and Partnership Initiative. Dale Foster - Area Manager for HUBER Technology: “It has been both a pleasure and hard work over a long period of time to arrive at standard inlet screening package solutions for deployment on United Utilities projects targeting small inlet works. The potential for efficiency savings that this approach offers throughout the AMP period and beyond is there for all to see. With the resulting improvement in quality, cost and time together with reduced health and safety risk and carbon emissions, it’s quite a result. It looks and sounds simple when seeing the results in writing but a lot of people throughout all the organisations mentioned put in a deal of hard work and diligence. Hopefully, as with other water companies, the potential this approach offers for other work streams can also be realised. The kit installed on this site will no doubt provide reliable and trouble free service for many years to come. Many of its Ro9 screen predecessors that are installed throughout the United Utilities region are well into 20+ years of service and prove very undemanding from an OPEX perspective. I am certain this will be the case at Westnewton WwTW.”[...]