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[...]Heating and Cooling Buildings with Wastewater Efficient and sustainable solutions by combining wastewater heat exchanger and heat pump Using wastewater as a heat source and heat sink for heating and cooling buildings reduces primary energy use and saves CO2 emissions. Using wastewater as a heat source and heat sink for heating and cooling buildings reduces primary energy use and saves CO2 emissions. Heating and Cooling with Wastewater from the Sewer System The HUBER ThermWin process allows heating and cooling of buildings using the wastewater in the sewage system as a regenerative energy source. Directly underneath our feet flows an unused source of energy: our wastewater. All larger buildings and local heating networks are ideal consumers of the heating energy obtained from this source. Heating with the Sewage Treatment Plant Effluent The effluent of a sewage treatment plant represents a great potential for heat recovery and allows heating and cooling of industrial buildings or feeding into heating networks by using the effluent of the sewage treatment plant as a regenerative energy source with high energy potential. Various options for wastewater heat utilisation Basically, there are three places where wastewater use is possible. In buildings Here, the wastewater generated in the building is used directly for heat utilisation. The advantage of high wastewater temperatures is offset by disadvantages such as reduced water quantities, fluctuations in the time of day and high operating costs. Wastewater from the sewer system With the HUBER ThermWin process , wastewater flowing in the sewer system can be used as a heat source (heating) but also as a heat sink (cooling). Sewage treatment plant effluent Here, the treated effluent at the outlet of the sewage treatment plant is used as a heat source. This is where the largest amounts of water are available, and if there are consumers for the heat, the installation of a HUBER Heat Exchanger RoWin in the outlet of the sewage treatment plant is an option here. FAQ Frequently Asked Questions What requirements must wastewater meet to be suitable for heat recovery? Basically, a certain temperature level is necessary. Municipal wastewater typically has temperatures of 10 - 25 °C, which allow ideal operation of a wastewater heat exchanger. To avoid excessive fouling of the heat exchanger, pre-screening of coarse solids (> 6 mm) is recommended. What types of water can be used for heat recovery? Almost any type of water can be used for heat recovery if pre-screened properly. This includes, for example, water from surface waters, wastewater from industrial processes, grey water or black water in the municipal sector or already purified water from the sewage treatment plant outlet. What are typical fields of application for the use of a wastewater heat exchanger? Heating or cooling of building complexes, feeding recovered heat into heating networks for example in industrial areas/parks, cooling of wastewater to comply with official effluent discharge requirements.[...]

[...]Heating and Cooling with Wastewater Using waste water as a sustainable and regenerative energy source Heat pumps have established themselves as an energy-efficient and sustainable option for heating and also cooling buildings. For heating, the heat pump extracts the heat from a medium and then raises it to a higher temperature level, thus enabling heating of a building. For cooling, it is the other way round: heat is extracted from the building and transferred to a medium. Heat pumps have established themselves as an energy-efficient and sustainable option for heating and also cooling buildings. For heating, the heat pump extracts the heat from a medium and then raises it to a higher temperature level, thus enabling heating of a building. For cooling, it is the other way round: heat is extracted from the building and transferred to a medium. Heating and Cooling Buildings with Wastewater Using wastewater for heating and cooling buildings provides an economic and efficient solution. It reduces the use of primary energy and CO2 emissions. Thermal energy contained in the wastewater can be recovered with heat pumps. Recovering Industrial Wastewater Heat Process water and wastewater of industrial processes often have higher temperatures. HUBER offers solutions to recover the energy and enables thermal cycles to increase economic efficiency. Wastewater is an interesting heat source The medium from which the heat pump extracts heat can be the air, the ground, groundwater, a body of water or even wastewater. Since the heating of buildings is particularly necessary in the colder months of the year, it is important to know the temperature of the medium from which the heat is extracted at that time. The higher the temperature, the higher the efficiency of the heat pump. In winter, the wastewater temperature is at least as high as the soil temperature at least as high as the groundwater temperature higher than the temperature in bodies of water significantly higher than the air temperature This makes wastewater a very interesting heat source for energy-efficient and sustainable heating FAQ Frequently Asked Questions What requirements must wastewater meet to be suitable for heat recovery? Basically, a certain temperature level is necessary. Municipal wastewater typically has temperatures of 10 - 25 °C, which allow ideal operation of a wastewater heat exchanger. To avoid excessive fouling of the heat exchanger, pre-screening of coarse solids (> 6 mm) is recommended. What types of water can be used for heat recovery? Almost any type of water can be used for heat recovery if pre-screened properly. This includes, for example, water from surface waters, wastewater from industrial processes, grey water or black water in the municipal sector or already purified water from the sewage treatment plant outlet. What are typical fields of application for the use of a wastewater heat exchanger? Heating or cooling of building complexes, feeding recovered heat into heating networks for example in industrial areas/parks, cooling of wastewater to comply with official effluent discharge requirements.[...]

[...]Future-oriented and sustainable solution for heating and cooling of buildings The HUBER ThermWin process allows heating and cooling of buildings by using the wastewater in the sewer system as a regenerative energy source. Right below the ground, in sewers, is a hidden and seldom used source of energy: our wastewater. Its temperature is usually between 12° and 20° C and hardly drops below 10° C even in winter, making wastewater an ideal energy source for operating a heat pump. All larger buildings and local heating networks are suitable consumers of the heating energy obtained in this way. The Process Heat Extraction from the Wastewater As a link between the wastewater and heat pump, a heat exchanger is required to extract the heat energy contained within the wastewater. The heat exchanger transfers the thermal energy from the wastewater to the heat pump. The HUBER ThermWin process uses the HUBER Heat Exchanger RoWin . The specific feature of this system is that the actual heat extraction from the wastewater takes place above ground and not in the sewer. All required system components are easily accessible and easy to maintain. The HUBER ThermWin process allows both heating (wastewater releases thermal energy) and cooling (wastewater absorbs thermal energy). In the HUBER ThermWin process, a partial stream of the wastewater flowing through the sewer is first passed through the HUBER Pumping Stations Screen ROTAMAT® RoK4 , which removes the coarse material from the wastewater. The wastewater is then pumped through the heat exchanger installed above ground and flows back into the sewer. Heat exchange with the secondary circuit, which is coupled with the heat pump, takes place within the heat exchanger. The heat exchanger used is the HUBER Heat Exchanger RoWin, specially developed for wastewater. The HUBER ThermWin process uses wastewater as a long-term secure and constantly renewable energy source to provide an environmentally friendly and sustainable method for heating and cooling buildings. Fossil energy sources such as gas, oil or coal can be saved and CO 2 emissions are minimised – a contribution to the fight against climate change.[...]

[...]Heating with the Sewage Treatment Plant Effluent Treated wastewater as a regenerative energy source with high energy potential The effluent of a sewage treatment plant represents a great potential for heat recovery and can make an important contribution especially to energy-efficient retrofitting of sewage treatment plants. All the wastewater that has been fed to the treatment plant via the sewage system is discharged into the receiving watercourse via a central outlet after treatment, so that large quantities of water are always available here. In addition, due to biological processes taking place, the temperature of effluents from sewage treatment plants usually is on average by 1 K higher than the inlet temperature. When heat is extracted from the effluent water of the treatment plant, it cools down accordingly. Since the discharge of cooler water has a favourable effect on the temperature and oxygen conditions in the receiving water, there is an advantage for flowing water biology. The Process Sewage treatment plant as a sustainable energy source Energy suppliers are increasingly discovering the potential of a sewage treatment plant as a source of energy and as a way of generating sustainable energy. Optimal installation increases economic efficiency To extract heat from the treated wastewater, the installation of the HUBER Heat Exchanger RoWin is necessary. The HUBER Heat Exchanger RoWin C version is particularly suitable for use in the outlet of a wastewater treatment plant. There is no tank, the heat exchanger modules are placed directly in the effluent stream and are thus optimally exposed to the flow. Installation of the heat exchanger in the channel or in a separate basin allows the use of the gravity flow from the sewage treatment plant. This means that no additional pumping energy is required. Innovative overflow weirs ensure optimal overflow even with varying effluent volumes. Optimal installation minimises costs and significantly increases the economic efficiency of such a system. The possibility of connecting the compact heat exchangers in parallel or in series opens up options for ideal adaptation to basin and wastewater conditions. Combined with load-bearing covers, the units can also be installed under parking areas for example. Fully automatic cleaning ensures long-term efficiency Utilisation of the clarified effluent from sewage treatment plants does not completely exclude biofilm formation on the heat exchanger surfaces. Therefore, fully automated cleaning of the exchanger tubes integrated in the HUBER Heat Exchanger RoWin is a key point for permanent and maximum heat transfer efficiency.[...]

[...]Schallstadt, Germany The energy turnaround has already been under discussion for several years. The events on the energy market in 2022 at the latest have now made it very clear to the public that there is a very great need for reorientation on the “heat market”. The discussions about the right fuel are in full swing. HUBER SE has a solution that does not require any fuel at all: it is based on exploiting the energetic potential of wastewater using the HUBER ThermWin system. Energy from wastewater replaces renewable and fossil fuels In Schallstadt in Baden-Württemberg (Breisgau-Hochschwarzwald district), the developer and operator of the local heating network, Energiedienst AG from Rheinfelden, found ideal conditions. In the Weiermatten development area, 200 flats, houses and a new town hall were built. Due to the proximity to an existing sewer in Schallstadt-Weiermatten, the energetic potential of the wastewater can be used to operate the cold local heating network. This means that no fuels are used there, neither regenerative (such as wood chips or wood pellets) nor fossil fuels (such as coal, oil and gas). HUBER ThermWin: clean energy from wastewater Decoupling from movements in the market for these fuels has thus become a reality. The fixed parameter is the thermal energy in wastewater: a permanently available resource that can be converted into clean energy using the HUBER ThermWin system and downstream heat pumps. Photos of the Schallstadt project for energy recovery from wastewater The system in Schallstadt is divided into the local heating network itself and the upstream solutions for generating or storing the energy supplied to the network. A predefined amount of wastewater is taken from the sewer and coarsely pre-screened. This is done in Schallstadt with a HUBER Pumping Stations Screen ROTAMAT® RoK4 . This is designed as an underground version and is therefore “invisible”. Only a manhole cover for access marks the point where the wastewater is prepared for use by the HUBER Heat Exchanger RoWin units. Feed pumps convey the energy-rich wastewater, which has temperatures between 12 and 20 °C all year round, to the heat exchangers. Energiedienst AG has set up an energy centre in the basement of the town hall. Two HUBER Heat Exchanger RoWin transfer the energy of the wastewater via tube bundles to the circulating water. In this way, the energy is fed to a 500 m³ buffer tank. Constant heat transfer thanks to patented self-cleaning system An innovative and unique self-cleaning mechanism of the heat exchangers ensures constant heat transfer. Cleaning operations on the HUBER Heat Exchanger RoWin units are automated – neither operating personnel nor other cleaning tools or agents are required. The concrete buffer tank was delivered in segments that were assembled within one week, and the site was prepared to the extent that it can be used as a car park. ”Power-to-heat”: converting electrical energy into heat The buffer storage is designed in such a way that in future additional heat can be supplied via already existing interfaces or a sector coupling of the electricity and heat sectors can be carried out. The name of this technological functional principle is “power-to-heat”: surplus electrical energy can thus be converted into heat. Zero emissions: heat pumps cover the entire heat demand in Schallstadt In Schallstadt, the heat pumps are operated as a monovalent heating system, because the energy extracted from the wastewater is sufficient to supply the entire area described with heat. This means: no fuel storage, little technology in the boiler room, no chimneys. If the heat and wastewater pumps as well as the heat exchangers are operated with “green” electricity, this means in concrete terms: zero climate-damaging emissions. Heating without fuel: energy optimisation with HUBER ThermWin ”Heating without fuel” is therefore not just an empty promise – it is reality. HUBER has successfully implemented its RoWin heat exchanger for wastewater in combination with intelligent solutions for pre-screening wastewater, such as the HUBER Pumping Stations Screen ROTAMAT® RoK4, in a wide variety of projects since 2010. The HUBER ThermWin system is an important component in meeting the challenges of heat supply and energy optimisation. Companies with foresight started planning and implementing projects like the one in Schallstadt at an early stage. At the time of the initial planning, the energy turnaround was more of a short- to medium-term goal – now it has become a necessity.[...]

[...]Rehau, Germany HUBER Longitudinal Grit Trap ROTAMAT® Ro6 Bio and HUBER Grit Washer RoSF G4E increase operating reliability and reduce operating costs Bioenergiezentrum Hochfranken (BEZ) is an association of the town Rehau, the administrative districts Hof and Wunsiedel and some local companies supplying the town and districts with regenerative energy. Beside different plants from the companies involved, the biowaste fermentation plant is at the heart of the new concept. The fermentation plant treats the biowaste of the munipalities involved, covering nearly 40% of the local primary energy demand. When the complete waste fermentation plant was planned and built, it turned out already after a short period of operation that the heavy medium was only very insufficiently separated from the treated substrate (comminuted biowaste mashed with water) and the biowaste still contained a very high amount of foreign material, from gravel and grit, stones and pieces of glass to metal waste. This material accumulates on the bottom of the downstream fermenter and has to be removed regularly at high costs using mining techniques to ensure the performance of the overall plant is maintained. This was the reason why Bioenergiezentrum Hochfranken contacted HUBER. After detailed examination and development of a concept, a HUBER Longitudinal Grit Trap ROTAMAT® Ro6 Bio was retrofitted in the fermenter and a HUBER Grit Washer RoSF4 G4E installed additionally. The sedimentation issue is in this way shifted from the fermenter to the HUBER Longitudinal Grit Trap where the heavy-medium and foreign matter is removed reliably. The downstream HUBER Grit Washer returns the adhering organics into the bio-suspension so that the heavy medium to be disposed contains as few residual organics as possible. It is also important to select a residence time that ensures the heavy medium can settle but as little as possible of the biosubstrate gets lost and the plant is not silted up. The grit trap is therefore equipped with a suitable aeration system. Since installation and start-up of the new plant mid 2018, no fermenter cleaning has been necessary. The heavy-medium separation works very well and reliably, contributing to the sustainable optimisation of system operation and plant stability.[...]

[...]China A strong addition to the HUBER portfolio The GritWolf®, the cross-flow lamella separator, completed the HUBER grit trap portfolio a few years ago. HUBER is the competent partner worldwide for grit removal in every application, whether municipal or industrial, in existing or new constructions, or with longitudinal, round or tangentially accelerated systems. A successful model with a unique selling point The HUBER GritWolf®, launched on the market a few years ago, is enjoying brisk demand. Its unique selling point as a lamella separator, coupled with reliable grit removal by means of a screw conveyor over the entire length of the grit chamber, is unbeatable. Due to its easy-to-clean lamella packs, the GritWolf® is also becoming increasingly popular in the industrial sector. Silt-laden wash water can be effectively treated and reused sustainably. Retrofit successes and versatile areas of application In recent years, many municipal contracts have been generated with the GritWolf®. The upgrading or retrofitting of existing old plants in particular exceeded the targets set. It is not the size of the sewage treatment plants that is decisive, but the need to offer customers a satisfactory, sustainable solution that does not require a large amount of space. That is why numerous references can now be found in the capacity range from 50 to 10,000 l/s (several machines for this volume, of course). In short: compact, efficient, sustainable With its sophisticated technology and flexible application, the HUBER GritWolf® remains a strong partner for modern grit separation. Because there is much to be done around the globe – today and tomorrow.[...]

[...]Belfast, Northern Ireland Huber Technology successfully completed a large £1.2 million project at Duncrue Street, Belfast. The project consisted of supply of equipment and mechanical installation to the inlet works. Huber Technology worked extremely closely with the main contractor Graham Construction and Northern Ireland Water. Project Profile Any project large or small doesn’t happen overnight and in most cases involves a lot of time and effort from a lot of people with different disciplines, experiences and very importantly local site knowledge needs to be involved. Duncrue Street, Belfast was typical of the effort that goes in to making sure that from the very start that a successful and fully functioning project is delivered and all parties and specifications and site requirements are not only met but in most cases exceeded. From the initial enquiry, which was in 2011, regular dialogue has been undertaken between NIW, the design consultant, contractor and Huber Technology. The understanding and appreciation by all of the high elevated and compact inlet works fed by 5 off large screw pumps meant that any issues relating to hydraulics were of the utmost importance. Any failures in this respect would cause extensive damage and untidiness to the surrounding area. In addition to this the existing 6 off coarse and 6 off fine screens on site along with their associated dedicated very long screw conveyors and handling equipment were continually causing issues concerning of not only carryover of screenings but high maintenance and reliability problems. This compounded with the high peaks of loadings in respect of flow and rags meant that the operation of the works involved large amount of manpower and monitoring to take place by NIW. During the long dialogue with all parties Huber Technology had to take into account the very critical site hydraulics and control philosophy requirements for this site along with the right selection of equipment to be used and the associated sizing that goes with this. The coarse screens chosen were used to protect and reduce the solids loading onto the 6mm escalator screens which have one of the highest screenings capture ratios on the market today of 84%. This would ensure that pump blockages and rags were not carried over into the works. Additionally Huber Technology suggested that in place of the very long and maintenance intensive duty standby screw conveyors that a launder system be utilized. This eliminated the need for the very complicated and maintenance intensive screw conveyors and duty / standby change over systems. One of the important aspects of this is that at all stages of the contract, meetings took place to ensure that all parties were aware of the current situation and all parties agreed the way forward. Huber Technology Supplied 6 x HUBER EscaMax® Belt Screen 5000 x 2252 with 6mm perforated plate 6 x HUBER RakeMax® Multi-Rake Bar Screen 4300 x 2250 with 50mm bar spacing 4 x HUBER WAP/SL Screenings Wash Press, size BG12 All Launder Channels DN350 Knifegate valves Equipment EscaMax® Screen throughput 2100 l/s peak flow per screen (5 off duty screens and 1 standby) RakeMax® Screen throughput 2100 l/s peak flow per screen (5 off duty screens and 1 standby) WAP SL max throughput of 15m³/hour per unit (duty + standby for coarse and fine screens each) Launder Channels for a flow rate of 25 l/s Objective A phased installation was crucial on this project to keep the existing works active which had been agreed with Graham Construction and Northern Ireland Water. As you can see from the photos the equipment offered had to also fit within the existing very tight sites hydraulic constraints. Solution The equipment was delivered directly to site where our regional service office based in Portadown, Northern Ireland took over the mechanical installation and commissioning. This proved to be a valuable resource and ensued that the project moved forward and any issues were quickly resolved. The HUBER equipment was successfully commissioned after a 28 day testing period already on 16th October 2013. “Having a strong local presence with a dedicated team and skilled technicians able to deliver this to a consistent high standard of workmanship ensures the project is delivered on time with the highest quality to the client. Huber is a global company with a local presence, the client has a local contact and this means project delivery of any size or complexity can be delivered with minimal fuss. Duncrue Street, Belfast will then be supported throughout its lifetime by the local regional team with prompt response and support to the end user.” commented Kieran Hagan, Regional Field Manager Ireland. Fred Neumann, Regional Sales Manager for Huber Technology also explained “The complexities of this major project were successfully minimized and overcome, due to early engagement with NIW operations/ project manager, consultants, main contractor and their subcontractor. Installation phasing and commissioning problems had minimum impact on the project delivery. This was down to the integrity and commitment of the local Huber Technology installation team.” Product Profile EscaMax® Belt Screen Versatile inlet screen Excellent separation efficiency due to its perforations Reliable cleaning of the perforated plates with a rotating brush Very compact system with minimum space requirements Easy to retro fit into existing channels RakeMax® Multi Rake bar Screen Very high screenings discharge capacity Low headloss Low installation height above ground level even in deep channels Control independent safety system WAP-SL Superior launder Wash Press Volume, weight and disposal cost reduction of up to 85% Compaction up to 50% DR High washed screenings quality of < 20mg BOD 5 /g DR Feeding through a launder channel or directly from a screen or conveyor Quotes “In January 2013 Huber Technology were appointed as a sub-contractor to GRAHAM Construction to supply and install 6 No new course and fine screens at Belfast WwTW under the IWWF Phase 2 Base Maintenance scheme. Works commenced on site in July 2013 and were successfully handed over officially to NI Water in May 2014. The quality of product, workmanship and co-operation provided by Huber for this scheme was of a very high standard.” explained Gerard Mc Keever, Project Manager for GRAHAM Construction. Peter Neeson, Operations Manager from NIW explained in the following 3 bullet points how well the project was carried out: "The reliability of the HUBER equipment has been excellent giving just minor teething problems which have been addressed and sorted effectively by both Huber Technology and the main contractor Graham Construction The screening capture rate, by both the course and fine sets of screens is excellent, evident now by how quickly the skips fill, and the significant reduction in Sewage related debris downstream of the screens. This has meant less pumping and treatment process problems for myself and break downs for NIW M&E. Prior to the new Huber screening system being installed the old one used to pass forward into the works large amounts of sewage debris which often settled out with the sludge’s. This issue drew complaints of pump blockages etc. from the sludge incinerator team (previously NIW) now Veolia water and NIW M&E. Pump blockages are rarely an issue now on site. Screenings handing has been vastly improved by the installation of the Huber WAPs and launder trough system. It replaced a screw conveyor and compaction units which were housed in a purpose built building, this made the maintenance of the old units a dirty and sometimes dangerous job because of space and lighting issues. The WAP’s seem to be well capable of dealing with plug flows of screenings that occur from time to time BWWTW catchment is fairly flat, so in wet weather screenings can arrive at the works on mass after a dry spell, the new WAP’s seem to be very good at dealing with this."[...]

[...]Clean and safe solutions for drinking water applications Drinking water must go from the drinking water reservoir into the mains in a hygienically perfect condition. There are therefore high demands on the structural design and hydraulic equipment of water reservoirs. Typically, the water surface in a reservoir is constantly in motion. While air streams out during filling, the water reservoir draws in ambient air during emptying. In this respiration process, particles contained in the air enter the drinking water along with oxygen and nitrogen. Since organisms such as germs, viruses, spores or pollen are also present, this results in severe hygiene problems. Even the elevated reservoir on a greenfield site is not spared from this. HUBER has adapted solutions for these cases: Specially developed aeration and deaeration systems for drinking water reservoirs remove the finest particles from the air. Louvres can keep coarser dust, insects or leaves away from the water chamber. The first stage of air cleaning can be achieved using HUBER Louvres TT2.JW/TT10.B . Alternatively, the use of HUBER Ventilation Chimney BKA models is also possible. HUBER offers a hygienic solution for air filtration with one of four HUBER Aeration/Deaeration Plant BLA systems differing in throughput. These systems use HEPA filters to filter the air before it can enter the drinking water reservoir. As a result, hygienically pure, clean filtered air is always present in the reservoir.[...]

[...]Shanghai, China[...]