Wastewater Heat Articles

ELTS 500 This plant is a two step vacuum evaporator with a capacity of 500 l/h. The company treats oil-bearing wastewater for various customers. The plant concentrates oil-bearing wastewater from approx. 8% to 90%. The heat for working this plant comes from district heating – approx. 70°C. A CIP programme is integrated in the plant in order to automate as much as possible. ...

Mar. 4, 2019

By Bjørnkjær Maskinfabrik A/S

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Nov. 18, 2018

By SHARC International Systems Inc.

Montblanc is a company based in Hamburg, Germany, that is well-known for manufacturing handcrafted, high-quality writing instruments. Perhaps the best known Montblanc product is the classic masterpiece, a fountain pen. The pen’s cap features the white star emblem, which is a stylised nod to Mont Blanc’s snowy peak. All Montblanc writing instruments are characterised by their ...

May 16, 2017

By H2O GmbH

Hygiene requirements are growing increasingly strict in many sectors, and the treatment of industrial wastewater is no exception. The vacuum distillation process in particular has to deal with the question of sterile treatment and subsequent storage of water obtained from the process. The mere possibility of reintroducing wastewater into the production process makes it imperative to prevent ...

May 15, 2017

By H2O GmbH

A Retrofit project installing into a heating system seeking to reduce carbon emissions ...

Feb. 18, 2017

By SHARC International Systems Inc.

The Client The Client is a steel industry based in the Middle East producing tinplates for food cans. Tinplates provide excellent corrosion resistance and are produced starting from cast iron by several steps. Cast iron is first rolled to get thickness in the range of 0.2 – 0.3 mm than it is electroplated from aqueous acid solutions at a temperature around 60°C. The plating bath ...

Feb. 14, 2017

By EVALED-Evaporator

After 14 years of living on a houseboat we have now moved into an apartment in a private home. There are many wonderful things about this apartment - the lack of dry rot and any concerns about the wind direction are two of them. Perhaps my favorite is the radiant floor heat. Radiant heat, hot water piped under the floors, keeps your toes and the rest of your body toasty. Water is great for this ...

Dec. 31, 2016

By BioCycle Magazine

In the urban water cycle there are different sources for extracting energy. In addition to potential and chemical energy in the wastewater, thermal energy can also be recovered. Heat can be recovered from the wastewater with heat exchangers that are located decentralized and/or centralized at several locations throughout the system. It can be recovered directly at the source (e.g. in the ...

Dec. 27, 2016

By IWA Publishing

Problem: Operators know aerobic and anaerobic systems need sufficient water temperature to keep microbial populations active and working. Heat loss is detrimental to effluent quality and gas production. Both systems can be negatively affected from low daily and seasonal temperatures. Unfortunately, most operators and engineers have no control over water temperature loss in their tanks and ...

Nov. 29, 2016

By Industrial & Environmental Concepts, Inc. (IEC)

Combining bioassays and analytical chemistry screening is a powerful approach to assess organic micropollutants which are the main contributors to toxic potential in complex mixtures of treated wastewater (TWW). The aim of this study was to perform a comprehensive toxicity assessment of treated effluents using stress response bioassays and then to assess the occurrence of the organic ...

Sep. 7, 2016

By IWA Publishing

The composition of sewage sludge and, thus, its energetic potential is influenced by wastewater and wastewater treatment processes. Higher or lower heating values (HHV or LHV) are decisive factors for the incineration/gasification/pyrolysis of sewage sludge. The HHV is analyzed with a bomb calorimeter and converted to the LHV. It is also possible to calculate the heating value via chemical ...

Apr. 14, 2016

By IWA Publishing

Heat recovery with AERZEN blowers As a part of an extensive renovation project, the city of Filderstadt modernised the Bombach wastewater treatment plant, located in the district of Bonlanden. Now, Delta Hybrid rotary lobe compressors made by AERZEN provide optimal oxygen supply, and, thanks to heat recovery measures, the energy balance has improved further. Although ...

Jan. 31, 2016

By Aerzener Maschinenfabrik GmbH

The energetic use of sewage sludge is an important step in the generation of electricity and heat within a wastewater treatment plant (WWTP). For a holistic approach, methane emissions derived from anaerobic treatment have to be considered. Measurements show that methane dissolved in digested sludge can be analyzed via the vacuum salting out degassing method. At different WWTPs, dissolved ...

Dec. 22, 2015

By IWA Publishing

Sewage is dirty and stinks. Out of sniffing distance – out of mind. Up until the 1980s sewage was taboo and not given the attention it deserves. One cold winter morning in 1988, 23 years ago, Urs Studer stopped beside a steaming manhole cover and wondered how such a source of heat could go untapped. Ever since he has been dedicating himself intensively to the recycling of sewage heat. At ...

Mar. 8, 2015

By RABTHERM AG

The Regional Municipality of Halton or Halton Region is located in Southern Ontario, part of the greater Toronto area. Halton owns and operates seven wastewater treatment plants for four Ontario cities in its jurisdiction. These plants are designed to treat wastewater from homes and businesses turning the effluents into biosolids. Turning waste into food requires a process that starts with the ...

Dec. 30, 2014

By CST Industries Inc

The Town of Creston, British Columbia, Canada, operates an anaerobic digester to treat brewery wastewater. Biogas is used to fuel a boiler for process heating. The system was approaching 20 years old and the cover, originally built by GTI, required replacement. The anaerobic digester had to remain in service while the covers were changed. The cover was replaced with an updated GTI gas collection ...

Dec. 24, 2014

By Geomembrane Technologies, an Evoqua brand

Electrostatic desalting is the industrial standard method for removing salt from crude oil. In this study a techno-economic analysis of a crude oil desalting plant is presented. A complete process simulation was conducted using Aspen HYSYS in parallel with a simulation in Microsoft Excel in order to account for salt concentrations. An economic assessment of the proposed design was performed to ...

Nov. 23, 2014

By Inderscience Publishers

The water and sewerage sectors' combined emissions account for just over 1% of total UK emissions, while household water heating accounts for a further 5%. Energy use, particularly electricity, is the largest source of emissions in the sector. Water efficiency measures should therefore result in reduced emissions from a lower demand for water and wastewater treatment and ...

Dec. 10, 2013

By IWA Publishing

This study estimates the carbon footprints of 16 municipal wastewater treatment plants (WWTPs), all situated in Scandinavian countries, by using a simple model. The carbon footprint calculations were based on operational data, literature emission factors (efs) and measurements of greenhouse gas emissions at some of the studied WWTPs. No carbon neutral WWTPs were found. The carbon footprints ...

Aug. 28, 2013

By IWA Publishing

The Client The Client is one of the European branches of a Multinational Company leader in the production of adhesives having a wide range of industrial applications. The challenge The company carries out the mixing of basic adhesive ingredients in suitable reactors. The final product is sold in liquid form to the wood and furniture, graphic, textile ...

Jun. 3, 2013

By EVALED-Evaporator