Wastewater Heat (Water and Wastewater) Articles

50 Years of Innovation and Counting

Established in 1969, Kemco Systems came to be as energy costs and the costs associated with sewer disposal and water rose to become significant costs of doing business. As demand for its systems grew, so too did the size and capabilities of the company. Building from basic wastewater heat recovery, Kemco’s expertise expanded to include highly efficient hot water systems, stack heat ...

Dec. 18, 2020

By Kemco Systems, Co. LLC

What makes E3`s Wastewater Evaporators the market leaders?

E3 Solutions’ patented evaporation systems are the MegaMist and the Varimax, both purposely designed to evaporate the widest variety of industrial wastewater effectively. E3’s experienced team has studied the science of water evaporation, the weather factors involved in such natural phenomena, and the best manufacturing materials to create the most effective, durable and easy-to-use ...

Apr. 8, 2020

By E3 Solutions LLC

Ammonia Stripper Projects VEOLIA - Case Study

This project is for the reduction of ammonia in wastewater by using heat and energy from excess ...

Aug. 13, 2019

By Organics USA, Inc.

NSR, Helsingborg, Sweden - Case Study

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. 5, 2019

By Bjørnkjær Maskinfabrik A/S

How to Keep Your Facility’s Oil Skimmer Running In Cold Weather

How to Winterize Your Oil Skimming Equipment Oil Skimmers, Inc. offers a variety of winterization options that can work with already-installed skimmers to enable your facility to skim oil from wastewater on a continuous basis, all winter long. A 300W heat rod can be added to the Model 6V Brill™ oil skimmer unit, and a 200W pan heater can be equipped for the Model 5H oil skimmer. For ...

Feb. 27, 2019

By Oil Skimmers, Inc.

Wall Centre Central Park - Case Study

Wall Centre Central Park is a two-phase real-estate development in Vancouver, Canada. Phase 1 contains 700 residential units and incorporates a Sharc 660 system, commissioned in July 2017. Phase 2 contains 350 residential units and implements two Piranha T10 units, commissioned in July 2018. These systems use heat from the buildings’ wastewater to pre-heat incoming cold water. This helped ...

Nov. 19, 2018

By SHARC International Systems Inc.

Tank Cleaner ITC Holland - Case Study

New bioreactor leads to deeper purification and production of biogas Dutch tank cleaner ITC Holland Transport BV cleans 100 to 300 trucks per day. Each cleaning produces 1,600 to 2,000 litres of wastewater with 5 to 40 kg of organic material. Before ITC installed the BIOPAQ®AFR, its wastewater was treated with a DAF unit before discharge to the sewage system. Key driver for ITC’s ...

May 24, 2018

By Paques Technology B.V.

Saving on electroplating costs

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 17, 2017

By H2O GmbH

Our Award Winning Borders College installation - Case Study

A Retrofit project installing into a heating system seeking to reduce carbon emissions Backed by investment from Equitix and the UK Green Investment Bank, the SHARC heat recovery system intercepts wastewater from a sewer close to the local treatment works operated by Scottish Water. The system uses a heat pump to amplify the natural warmth of wastewater and the heat produced is being sold to ...

Feb. 19, 2017

By SHARC International Systems Inc.

Case study - Tin plating wastewater treatment

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. 15, 2017

By EVALED-Evaporator

Investigating the interactions of decentralized and centralized wastewater heat recovery systems

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. 28, 2016

By IWA Publishing

Case study - Heat loss - A problem for wastewater treatment & nitrification

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 basins. ...

Nov. 30, 2016

By Industrial & Environmental Concepts, Inc. (IEC)

Assessment of organic micropollutants occurrence in treated wastewater using heat shock protein 47 stress responses in Chinese hamster ovary cells and GC/MS-based non-target screening

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. 8, 2016

By IWA Publishing

Evaluation of the energetic potential of sewage sludge by characterization of its organic composition

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. 15, 2016

By IWA Publishing

Analysis of methane emissions from digested sludge

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. 23, 2015

By IWA Publishing

Future-oriented further developments: wastewater heat utilization plants with a return on investment (ROI) of 2 - 6 years

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. 9, 2015

By RABTHERM AG

Solving a messy problem: Covering wastewater treatment in Halton region Ontario, Canada case study

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. 31, 2014

By CST Industries Inc

Techno-economic assessment of heavy crude oil desalting plant

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. 24, 2014

By Inderscience Publishers

Modelling the viability of heat recovery from combined sewers

Modelling of wastewater temperatures along a sewer pipe using energy balance equations and assuming steady-state conditions was achieved. Modelling error was calculated, by comparing the predicted temperature drop to measured ones in three combined sewers, and was found to have an overall root mean squared error of 0.37 K. Downstream measured wastewater temperature was plotted against modelled ...

Jul. 23, 2014

By IWA Publishing

Carbon footprints of Scandinavian wastewater treatment plants

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. 29, 2013

By IWA Publishing