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[...]Guelph, Canada “Nothing slips by the RakeMax®. Its operation is absolutely flawless. After three years, we look at the components in amazement because they are ageless – it’s as if they were just installed yesterday.” Majde Qaqish, Project Engineer for the City of Guelph WWTP It had become obvious to The City of Guelph that it was time to replace several of the components in its treatment process. Project leaders also wanted to take the opportunity to upgrade its treatment processes by implementing leading edge technology. Working with consultants, the City thoroughly researched solutions to identify, review, and choose the technology and vendor that was the best match for the plant and the long-term wastewater treatment goals of the City. After visiting implementation sites, talking to other Huber clients, participating in demonstrations of technology and vendors, the City confi dently selected HUBER and the RakeMax® bar screen. The City of Guelph installed four RakeMax® screen systems over 3 years to complete a configuration that produces 100% uptime. Two systems are in production at all times with two reserved for backup. The City maintains 100% capacity through regularly scheduled cleanings and maintenance checks. Minimum maintenance Incredibly high uptime Consistent performance Ageless durability Flawless operation Challenge: For Majde Qaqish, Project Engineer for the City of Guelph Wastewater Treatment Plant, putting a leading edge screening system in place was a priority. He had a set of stringent performance and durability requirements for the technology itself and wanted to combine those with productivity priorities for the maintenance crew. The City of Guelph required four things of its technology and vendor: 1. Improve the amount of waste removed from the stream 2. Operate efficiently with little required maintenance 3. Last well into the 50 year strategic wastewater treatment plan 4. Support the technology with knowledgeable, and responsive resources Solution: Majde knew HUBER and its local support resources. He understood the RakeMax® technology and – after seeing it operate at another treatment plant – considered it to be the best technology of its kind and the best choice for Guelph’s needs. With expectations set for its new technology to produce good efficiency in removing inorganics and grit from the stream, the City was delighted when the system was even more impressive, producing at high removal efficiency, zero-maintenance operations and consistently flawless performance. According to Majde, there is a tremendous quality improvement in what gets extracted at the headworks. As a result all tank capacity is made available for optimizing plant capacity. Made to be a workhorse The design, manufacturing, and materials make the RakeMax® incredibly durable and maintenance free. It consistently out-performs other technology. The RakeMax® is also configured for easy processing. Screen covers on both the top and bottom reduce emitted odors by 70%. Monitoring screenings is as simple as lifting the covers. Low maintenance Grit tank cleanings – previously performed by the City’s crew on 2-month cycles – are now performed on 9-month cycles. Low downstream impact Debris no longer collects in digesters and their operational efficiency has shown a 90% improvement. Improvements across the screening process Marked improvements are obvious in all areas the City’s screening process. The volume of screenings removed has increased, quality of end-product has improved and unscheduled maintenance needs have been reduced to zero. Operator Quotes: “We have 100% confidence in our technology and our vendor. The RakeMax® operates flawlessly and HUBER’s resources are close by and knowledgeable of the technology and our processes.” “The odor reduction is significant. The staff faced very offensive odors when entering the area. The covered screens block any odors that exist, however the process eliminates so much of the waste that the process’s ‘trademark’ odors just don’t exist.” City of Guelph, ON - Waste Water Treatment Plant: Facilities: 1 RakeMax® Implementations: 4 Service Area: City of Guelph as well as the Village of Rockwood and the Gazer-Mooney subdivision located in the Township of Guelph- Eramosa Average Flow: 54.5 ML/d The City of Guelph, Environmental Services Department, Wastewater Services Division (WSD), is engaged in wastewater, storm water and water quality management for the area which it serves. The WSD manages and operates the Wastewater Treatment Plant located at Hanlon and Wellington Street West and is responsible for meeting the treatment standards prescribed by Ministry of Environment (MOE) legislation.[...]

[...]Waging am See, Germany HUBER Sludge Thickener excels for its operating reliability and energy efficiency with thickening primary and surplus sludge in automatic mode! In summer 2015, Gemeindewerke Waging (municipal utilities) in the Bavarian Chiemgau district were desperately looking for an energy-efficient, high-performance sludge thickening plant. They wanted a new energy-efficient and well-proven technical solution to replace their old centrifuge which consumed too much energy. Before they decided to buy a new system they tested a HUBER Disc Thickener S-DISC installed in a tank on their sewage treatment plant at Waging. Surplus sludge and separately also primary sludge was thickened in the trials with the aim to optimize digester capacity, gas yield and sludge handling in the overall process on site. After evaluation of all test results it turned out that the excess sludge with 0.6% DS was thickened to > 6% and the primary sludge with 1.8% DS to > 8% by automatic time-lagged operation. To ensure automated operation the initial DS contents of the different sludges is determined so that the plant parameters of the automatic operation system can adjust themselves to varying sludge qualities. The decisive factors in favour of the HUBER Disc Thickener were that our system is robust, reliable and insensitive and demonstrated convincingly its operation efficiency during the test phase. The HUBER Disc Thickener S-DISC is a slowly rotating disc construction that is installed at an angle inside a closed stainless steel tank. The filter disc divides the tank into three areas: solids feeding area, thickening area (supported by chicanes), and sludge discharge area. The pre-flocculated sludge flows from the flocculation reactor onto the filter disc surface and the filtrate set free flows through a mesh and runs off. The remaining sludge is thickened to the requested solids concentration and in the upper section of the disc thickener transported into the thick sludge tank by a scraper system. The major advantage of the HUBER Disc Thickener is that a very high efficiency of sludge thickening can be achieved with low investment and operating costs (see operating results). On WWTP Waging the HUBER Disc Thickener S-DISC is installed in the basement of the operational building. This location has the advantage that the primary sludge and surplus sludge can be taken centrally and the generated thick sludge directly fed to the digester. We would like to take this opportunity to thank Gemeindewerke Waging and the operating staff on WWTP Waging for the problem-free execution of the project and wish them also for the future a failure-free plant operation with the HUBER Disc Thickener. Operating results at the time of plant start-up achieved with thickening surplus and primary sludge: Type of sludge | Surplus sludge | Primary sludge Sludge index|120| oDS|| 78 % initial DS %| 1.0| 1.8 Throughput capacity m³/h| 30| 20 Throughput capacity kg/h| 250| 360 Final DS %| 6 – 8| 6 – 10 Polymer consumption g/kg DS| 3| 3 Separation degree %| > 99| > 99 Rotary disc speed rpm| 1.5 – 3| 3[...]

[...]Access door for the field of potable water supply, especially in areas where flooding is likely Exterior door, f lood proof up to a water gauge of 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. Door leaf, Sheet thickness 3 mm on both the pressurised and non-pressurised side. Door leaf thickness: 57 mm, with injected CFCs-free polyurethane hard foam insulation, longitudinally ground surface finish, with special seal on all four sides. Attached to the frame with stable, maintenance-free hinge plates. Lock prepared for an onsite profile half cylinder lockable from the outside. It is locked by means of a locking lever that can be operated from both sides. Frame made of special profile, all-round on four sides, with injected CFCs-free polyurethane hard foam insulation, with associated fixing material. The circumferential gap between the frame and the wall must be sealed with the sealing material supplied. Door leaf and frame welded under inert gas, pickled in an immersion bath and passivated. Max. permitted leakage rate: 0.3 litres/hour. Options General Options: 1.4404 (AISI 316 L) stainless steel Anchor hooks on the door leaf, which engage positively in the frame when closed. Upper door closer 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 equalisation 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[...]

[...]Berching, Germany Not only for critical wastewater but also as an alternative to overloaded aeration tanks and secondary settling tanks of municipal and industrial wastewater treatment plants Secondary settling tanks have to manage the important task of separating activated sludge. With diameters of sometimes more than 50 metres, most of them are horizontal flow systems. The sludge can settle inside while the virtually solids-free clear water runs off through a channel. The control and monitoring of such separation stages is still done visually in most cases through cyclic visibility depth measurement. If such measurement shoes that the sludge level height is outside the control range, the countermeasures taken are frequently either adjusting the return sludge ratio or increasing the volume of excess sludge discharged. If, however, these measures remain without effect, cost-intensive addition of precipitants and flocculants or other additives is frequently the only means left to eliminate operational problems caused by the continuous overflow of biomass and fine suspended matter. Such operational problems caused by a poor settling behaviour of the activated sludge are primarily due to overload in the secondary settling tank, strongly varying inlet conditions, changing nutrient ratios due to industrial dischargers and ineffective separation of grease and other flotating particles. Moreover, the overflow of 1 mg/L filterable solids increases the concentration of COD by 0.8 to 1.4 mg/L and the concentration of phosphorus by 0.02 to more than 0.04 mg/L. Activated sludge – let settle or let float? The microorganisms performing the biological processes in the aeration tank settle inside the activated sludge flocks and adhere to the finely dispersed suspended matter and solids that are adsorbed to the activated sludge flocks. It is owing to this characteristic of the bacteria that they can be separated from the treated wastewater with the use of sedimentation processes. An unfortunately relatively small difference in density between the activated sludge flocks and the treated wastewater results in a low settling velocity. Large secondary settling tanks are therefore necessary to provide the large tank surfaces required for the separation process. Or to summarise in simple terms: the separation efficiency of a secondary settling tank is limited by the slow settling velocity of the activated sludge flocks. An alternative to secondary settling tanks offering itself is flotation with additionally improved separation efficiency. Very small gas bubbles of only few thousands of a millimetre attach to the activated sludge flocks and very fine turbidities. These gas-solids agglomerates become much lighter in density than water and therefore float quite fast to the water surface in the flotation tank. Such very small gas bubbles are generated by the principle of dissolved air flotation. They are produced by injecting air under pressure into a recycle water flow where they become completely dissolved before they are released again through pressure relief in a flotation cell. Due to the small size of the bubbles, even turbidities can be transported to the surface of the flotation tank that could not be separated during their residence time in a secondary settling tank. Improved process and energy balance of the overall plant The solids rising with the gas bubbles accumulate at the surface of the flotation tank to up to 5% solids content and can be returned to the system as return sludge. Alternatively, the thickened sludge can be removed as surplus sludge and passed on to downstream treatment stages. A sludge flotation plant can be fed with up to 5m³ activated sludge per m² surface and hour. In practice, significantly better effluent values are achieved than with secondary settling tanks. Moreover, flotation plants need much less space. The slightly higher energy costs for operating a dissolved air flotation plant relativise due to the improved overall process. Flotation systems are optimally suitable especially as retrofits where space is limited or for the refurbishment of existing plants without any major construction work. Flotation plants are also increasingly applied as tertiary treatment stage for so-called ‘polishing / P-reduction’. HUBER HDF and HDF S – two different designs for individual requirements As a manufacturer of flotation plants (HDF) with many years of experience, primarily in industrial preliminary treatment, HUBER has now developed also high-efficiency flotation systems for the separation of activated sludge and implemented them successfully (HDF S). The difference between the innovative HDF S plants and the conventional HDF units is mainly their special design. Instead of high-rise tanks with integrated lamella units, one-part tanks with flow guiding devices and adapted scraper systems are used to separate the activated sludge. This still relatively little-known alternative to secondary settling tanks is enjoying increasing demand. Several customers from different branches have already understood the benefits activated sludge flotation offers compared to conventional secondary clarification and profit from significantly increased process safety and reduced current costs after the successful installation and start-up of a flotation system.[...]

[...]Fold-back entrance aid, made of 1.4307 (AISI 304 L) stainless steel For safety access ladders with 300 mm, 400 mm, 500 mm width. In accordance with DIN 3620. Note: The 1.1 m projection required according to DIN 19572 is not achieved with this design variant of the entrance aid. Completely shielded arc welded, acid-treated in a pickling bath and passivated. Options: 1.4404 (AISI 316 L) stainless steel[...]

[...]Fold-back, extensible entrance aid, with design certification in accordance with DIN 19572 Made of 1.4307 (AISI 304 L) stainless steel, for safety access ladders with 300 mm, 400 mm, 500 mm width. The fold-back, collapsible entrance aid EH KV is folded vertically upwards and extended when in use. As it is extensible, it is easy to operate and very convenient to use for the operating personnel. After use, the EH KV entrance aid is retracted and folded over the manhole opening and can thus remain in the manhole. Access ladders must have a handhold at their exit. This requirement is deemed to be fulfilled if one or both handles of a ladder project at least 1.1 m beyond the exit height. Completely shielded arc welded, acid-treated in a pickling bath and passivated. Optionally available in: 1.4404 (AISI 316 L) stainless steel[...]

[...]An early Christmas present at the end of 2022: HUBER expands its social media channels and from now on also posts on Instagram about all news from Berching and the whole (HUBER) world. HUBER SE on Instagram: @huber.se In future, Instagram will be another channel for external corporate communication: in addition to short reports on products, projects and personnel, a focus will also be on expanding and strengthening the employer brand and recruiting. Instagram is the fifth social media channel that HUBER manages from the company headquarters in Berching/Erasbach – from Berching to the whole world in real time, so to speak.[...]

[...]Birmingham, Great Britain[...]

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

[...]Berching/Berlin - The ”board ship“ of German Water Partnership (GWP) has set sail for another four years: On Tuesday, 5 July, the 18th general meeting of GWP took place in Berlin on the seminar ship “Orca ten Broke“. Georg Huber, shareholder and CEO of HUBER SE, was elected to the GWP board for another term of office and thus for the next four years. Term of office 2022 – 2026: new board unanimously elected After the official welcome by GWP Board Chair Gunda Röstel and the activity report 2021, in which the management outlined the activities of the last as well as the current year and looked ahead to the rest of 2022, the election of the board was on the agenda. After a presentation of the candidates, the new executive board was unanimously elected for the term 2022 – 2026. Georg Huber: “Worldwide networking and interdisciplinary cooperation of ever greater importance“ “I am delighted with the trust placed in me by German Water Partnership,“ said Georg Huber after being elected to the GWP board for another four years. “In view of increasing global crises – not only in the fields of environment, climate and water supply – worldwide networking and interdisciplinary cooperation are of ever greater importance. German Water Partnership has been an important network and an excellent platform for cooperation on a global level in the sector since its foundation in 2008. I am therefore not only personally proud to be a member of the GWP board for another four years, but also look forward to further cooperation with anticipation and responsibility.“ Following the election of the board and reports on GWP's public relations and member communications, the outgoing board members were bidden farewell. At the end of the general meeting, the ship went out at around 7.30 pm for a two-hour cruise. The new board thus set sail for another term of office, literally and figuratively. The new GWP board The new board of German Water Partnership consists of the following members: Dr. Michael Beckereit (Deutsche Wasser International GmbH) Axel Böcker (Dorsch International Consultants GmbH) Dipl.-Ing. (FH) Michael Drechsler (UFT Umwelt- und Fluid-Technik GmbH) Eckard Eberle (elected in absentia, Siemens) Alexandra Ervenich (Mitsubishi Electric Europe BV) Prof. Dr.-Ing. Sven-Uwe Geißen (Technical University Berlin) Ingo Hannemann (Hamburg Wasser) Georg Huber (shareholder and CEO HUBER SE) Michael Kersting (Hermann Sewerin GmbH) Dr. Michael Kuhn (Kuhn GmbH) Dr.-Ing. Shahrooz Mohajeri (inter 3 Institute for Resource Management) Dipl.-Chem.-Ing. Anja Rach (Enexio Water Technologies) Gunda Röstel (Gelsenwasser AG und Stadtentwässerung Dresden GmbH, Chairwoman of the Board GWP) Dr.-Ing. Gerd Sagawe (Dr. Weber & Partner GmbH) Dr.-Ing. Ursula Schließmann (Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB) About German Water Partnership German Water Partnership e.V. is a network in which more than 300 private and public companies from the water sector as well as trade associations and institutions from business, science and research have joined forces. Since its foundation in 2008, the initiative has been supported by the five Federal Ministries for the Environment, Research, Development, Economics and the Federal Foreign Office.[...]