Search

[...]„There is one thing that is for sure: The age of cheap energy is over!“ Nobuo Tanaka, executive director of IEA (International Energy Agency) This describes with few words why it is becoming increasingly important to recover used energy. The below examples of projects that use wastewater and process water heat show how energy recovery can successfully be realised in practice. Energy recovery from vapour water In sewage treatment plants vapour water is generated during the sludge dewatering process and is also present in the wash water of the exhaust air treatment systems of sewage sludge drying plants[...]

[...]Berching, Germany Sewage sludge disposal is a key issue on sewage treatment works. Irrespective of the way of sludge utilization, sludge weight and volume are the main causes for high costs. State-of-the-art technology offers several dewatering options but most of these solutions disregard the rich energy potential of filtrate water. The wastewater heat exchanger HUBER RoWin utilises this energy potential. The primary goal of sewage sludge dewatering on wastewater treatment plants is to increase sludge solids contents. With the presently available state-of-the-art technology dry substance contents of [...]

[...]Arosa, Swiss A CO2-neutral hotel with HUBER technology? Yes, Valsana The Valsana Hotel & Apartment Arosa sets new standards for its sustainable energy concept and is heated 100% without fossil fuels. The lifestyle boutique hotel in the popular holiday destination of Arosa in the Swiss Alps has already proven in 2017 that sustainability can be successfully accomplished in harmony with nature and customer needs with an integrated approach in the upscale hotel industry. This pioneering achievement by the Tschuggen Hotel Group as owner of the Valsana was implemented long before the climate debate[...]

[...]The HUBER Heat Exchanger RoWin is unique of its kind. The wastewater heat exchanger brilliantly combines excellent heat transfer and automatic surface cleaning. A screw ensures automatic removal of sediments. The RoWin heat exchanger can therefore be used for any sort of wastewater, though municipal wastewater is certainly the most frequent application. The ‘raw material’ wastewater is taken directly from the sewer or downstream of the mechanical treatment stage on the WWTP. But the thermal energy contained within the wastewater does not get lost on a WWTP. Although the wastewater is in [...]

[...]Toronto, Canada Noventa Energy Partners relies on HUBER ThermWin Noventa Energy Partners is using innovative technology to reduce the negative environmental impact of the existing energy supply for the Toronto Western Hospital. Over the life of this project, Toronto Western Hospital will see a cumulative reduction in greenhouse gas emissions of approximately 169,000 tonnes - equivalent to the annual CO2 emissions of approximately 52,000 cars. Mayor of the City of Toronto: "Great initiative to tackle climate change" These figures are matched by the statement of John Tory, Mayor of the City of [...]

[...]Berching, Germany HUBER Chemicals Dosing DIGIT-DOSE setting new standards for the efficient operation of flotation plants Industrial wastewater treatment cannot be imagined anymore without flotation technology. Flotation ensures that suspended matter, grease and particulate pollutants are effectively removed from production wastewater. If also dissolved pollutants need to be converted to particulate matter, precipitants and flocculants are added. Such additives can enormously increase cleaning efficiency, they are however also the major cost factor in the operating costs for a wastewater treatment[...]

[...]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 [...]

[...]During dry weather, organic and inorganic sediments increasingly settle on the sewer base in combined sewer systems due to slow flow velocities. Under stormwater conditions, these sediments float up and arrive along with the sewer flow at the sewage treatment plant or stormwater overflow structure. If the combined sewer volume exceeds the capacity of the overflow structure or sewage treatment plant, the combined water is frequently discharged to a receiving water course, impairing water quality with the result of increased costs for maintenance and cleaning. As a preventive measure, coarse material[...]

[...]Kappern, Austria In Kappern near Marchtrenk, a town between Wels and Linz, lies Austria’s second biggest sewage treatment plant which is designed for 160,000 PE. The main collector A has to cope with a high combined rainwater and sanitary sewer flow. Due to the given specific conditions the stormwater overflow tank Kappern offered an interesting opportunity to combine the two HUBER storm screen types, ROTAMAT® Storm Screen RoK1 and ROTAMAT® Storm Screen RoK2. Due to the screens’ high flexibility and capacity only minor structural adaptation work was necessary to optimally realize this project[...]

[...]Fully automatic throughput and performance control HUBER develops a revolutionary control system for BT Belt Dryers: The system is able to adjust the plant throughput fully automatically to varying dry substance contents in the dewatered sewage sludge. Operator attendance is thus reduced to a minimum. Dewatered sewage sludge, even if coming from a sewage treatment plant, does usually not show constant properties. Variations in organic content, chemical composition or polymer necessarily lead to varying dewatering results. Minor variations can normally be balanced quite well, but variations greater[...]