electric wastewater treatment Articles
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Wastewater treatment and electricity generation by membrane less microbial fuel
Membrane less microbial fuel cell (ML-MFC) is one of the attractive approaches for the simultaneous electricity generation and wastewater treatment. In this present paper, electricity generation by ML-MFC has been studied in continuous mode. Several experiments such as effect of aeration in cathode compartment, sludge concentration, initial substrate concentration and the COD removing capability ...
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Lessons learnt from the application of a multi-variable controller for nitrogen removal in the Mekolalde wastewater treatment plant: good simulation practices in control
Although often perceived as tools for use by scientists, mathematical modelling and simulation become indispensable when control engineers have to design controllers for real-life wastewater treatment plants (WWTPs). Nonetheless, the design of effective controllers in the wastewater domain using simulations requires effects, such as the nonlinearity of actuators, the time response of sensors, ...
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Grand Rapids Water Resource Recovery Facility, Michigan US - Case Study
The Grand Rapids Environmental Services Department operates the water resource recovery facility to keep all untreated sewage out of the Grand River in Michigan. The plant collects and treats an average of 40 million gallons of wastewater a day, using state-of-the-art technology in order to process the wastewater in the most sustainable way possible. As the plant is not a utility, it would not ...
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Fluence Environmental and Sustainability Impact
Fluence is demonstrating an ongoing commitment to increasing sustainability in all segments of water and wastewater treatment The world's population is growing and the competition for resources is increasing. At Fluence, we're committed to doing our part to operate sustainably. Our innovative solutions contribute to resource conservation, energy savings, the generation of energy from waste, and ...
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Tests show surfactant-based technology effective in removing PFAS from soil and groundwater
In recent years, several major corporations, including M, DuPont, and Chemours (a DuPont spinoff ), have reached major settlements with municipal governments and other plaintiffs, agreeing to spend billions of dollars to remove PFAS from their pro- duction processes, products and the environment. A substantial amount of these settlement funds will go towards helping water treatment facilities to ...
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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 ...
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Sewage sludge treatment: evaluation of the energy potential and methane emissions with COD balancing
Sewage sludge is an important resource for the generation of electricity and heat within a wastewater treatment plant (WWTP). Taking a holistic approach to such use involves considering the greenhouse gas emissions. In particular, for anaerobic sludge treatment, methane emissions are a matter of concern. Therefore, the utilization of a carbon balance, based on the chemical oxygen demand ...
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The role of innovative technologies in achieving energy-neutral wastewater treatment
A new flowsheet is proposed to achieve energy-neutral wastewater treatment (even better, electricity-neutral) while removing nitrogen using the proven nitrification-denitrification metabolic pathway. It is compatible with solid-liquid separation by conventional clarification or membrane filtration. The new flowsheet is based on a hybrid membrane-aerated biofilm reactor process which uses ...
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UF Membrane Technology
UF Membrane Technology Ultrafiltration (UF) is a variety of membrane filtration in which forces, such as pressure or concentration gradients, cause separation through the semi-permeable membrane. High molecular weight suspended solids and solutes remain in the so-called retentate while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). The pore size of ...
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Constructed wetland integrated microbial fuel cell system: looking back, moving forward
In the last 10 years, the microbial fuel cell (MFC) has been extensively studied worldwide to extract energy from wastewater via electricity generation. More recently, a merged technique of embedding MFC into a constructed wetland (CW) has been developed and appears to be increasingly investigated. The driving force to integrate these two technologies lies in the fact that CWs naturally ...
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UF Membrane Technology
Ultrafiltration (UF) is a variety of membrane filtration in which forces, such as pressure or concentration gradients, cause separation through the semi-permeable membrane. High molecular weight suspended solids and solutes remain in the so-called retentate while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). The pore size of the ultrafiltration ...
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An outline of textile wastewater treatment
The issues of wastewater are not restricted to any particular industry. Almost every sect including textile, manufacturing, and food processing industry are going through the harsh situation of wastewater, and with the implementation of versatile technologies, different organisations are trying their best to eradicate the soaring volume of wastewater. The textile industry is characterized its ...
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Performance of air-cathode stacked microbial fuel cells systems for wastewater treatment and electricity production
Two different air-cathode stacked microbial fuel cell (MFC) configurations were evaluated under continuous flow during the treatment of municipal wastewater and electricity production at a hydraulic retention time (HRT) of 3, 1, and 0.5 d. Stacked MFC 1 was formed by 20 individual air-cathode MFC units. The second stacked MFC (stacked MFC 2) consisted of 40 air-cathode MFC units placed in a ...
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EPA`s mandatory GHG emissions reporting commences Jan 1st in US
The Envinronmental Protection Agency (EPA) has announced its new mandatory GHG reporting program will commence on January 1st 2010 with reports being due in 2011. The new mandatory GHG rule from the EPA brings some changes from the originally proposed rule. Some of the changes are outlined below. INDUSTRIES INCLUDEDExcluded from reporting are the following industries: Electronics manufacturing ...
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Why does modern aeration technology make the treasurer happy?
The aerzen combined system provides optimum efficiencies at the wallau wastewater treatment plant The combination of different technologies for air conveying enablesoptimal energy use of oxygen for biological degradation processes in wastewater treatment plants. Concrete savings resulting from the use of AERZEN machines demonstrate this in practice at the Wallau plant. In 2016, the ...
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Overcoming Onsite Reuse Woes
The buzz words “water reuse” are very pervasive in today’s culture. Everyday we receive newspapers, e-newsletters and conference announcements that speak of drought, water shortages, global warming, discharge prohibitions and conservation. The wastewater treatment plant at one Midwest municipality has proactively demonstrated its determination to do its conservation duty by reusing up to 2000 ...
By Orival, Inc.
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Sustainable cost reductions: biogas from liquid wastes - Case Study
Generate energy instead of consuming it: treating liquid wastes and wastewater on a communal basis to generate biogas is an interesting alternative to conventional wastewater treatment and disposal for dairies. This is becoming a serious consideration for the future for milk producers given the globally increasing challenges arising from wastewater regulations or CO2 guidelines. More and more ...
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How new technologies are shrinking wastewater’s hefty carbon footprint
Wastewater treatment plants are energy hogs. A 2013 study by the Electric Power Research Institute and Water Research Foundation reported that they consumed about 30 billion kilowatt-hours of electricity per year, or about 0.8 percent of the total electricity used in the United States. Wastewater treatment’s high energy footprint is ironic because the organic matter in wastewater contains ...
By Ensia
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