municipal wastewater treatment Articles

  • Bioaugmentation as a tool to accelerate the start-up of anoxic-oxic process in a full-scale municipal wastewater treatment plant at low temperature

    Start up of anoxic-oxic process in a full-scale municipal wastewater treatment plant at low temperature was studied in this paper. Bioaugmentation technology was used to accelerate the start up. Aeration rate and feed style of influent were also controlled as associated measure to reduce the negative effect of low temperature on start up. The results showed that the process was successfully ...


    By Inderscience Publishers

  • Opportunities for microbial electrochemistry in municipal wastewater treatment – an overview

    Microbial bioelectrochemical systems (BESs) utilize living microorganisms to drive oxidation and reduction reactions at solid electrodes. BESs could potentially be used at municipal wastewater treatment plants (WWTPs) to recover the energy content of organic matter, to produce chemicals useful at the site, or to monitor and control biological treatment processes. In this paper, we review ...


    By IWA Publishing

  • MBR Operation

    Although membrane bioreactor (MBR) technology has grown up to become a state-of-the-art in municipal wastewater treatment during the last decade, design, construction and operation of  MBRs has not yet become a routine function. An insight into the practice of MBR technology will be available as a report at IWA Publishing by October 2010. ‘Operating Large-Scale Membrane ...


    By IWA Publishing

  • Thermodynamic analysis and assessment of a municipal wastewater treatment system: a field study on sewage treatment

    This paper is a field study on thermodynamic analysis and assessment of an actual municipal wastewater treatment facility. The system operation is described and a methodological approach based on the energy and exergy analyses is provided to assess the performance of a complex wastewater treatment system. Since the specific exergy value of the sludge is increased through treatment process, a new ...


    By Inderscience Publishers

  • Mass flow and energy efficiency in a large water reclamation plant in Singapore

    This paper presents the results of a measured data-based mass flow and balance study in UluPandan Water Reclamation Plant (WRP), the second largest municipal wastewater treatment plant in Singapore. The results are benchmarked against the Strass wastewater treatment plant in Austria, which has achieved energy self-efficiency. The gaps between the two plants have been identified and areas for ...


    By IWA Publishing

  • Municipal wastewater treatment plant

    Location: Kitimat, B.C. Owner: Kitimaat Village Council Description: Conceptual and detail process design of a 300 m3/d rotating biological contactor treatment plant incorporating primary solids removal, flow equalization, influent pumping, secondary clarification, sludge holding tank, control building, treated effluent pump station, and a ...


    By NovaTec Consultants Inc.

  • Theme Park the Efteling - Case Study

    Reuse of effluent of a municipal wastewater treatment works Theme park the Efteling stopped using groundwater and now uses treated effluent from a municipal wastewater treatment works for replenishing their ponds and irrigating the adjacent golf course. A reliable quality and quantity of the reused water is secured by using ASTRASAND® continuous sand ...


    By Paques Technology B.V.

  • Pretreatment of Municipal Wastewater by Enhanced Chemical Coagulation

    The efficiency of existing municipal wastewater treatment plants has been affected by the increase of incoming organic load caused by the expansions in developing countries. In the present investigation, the effect of Chemically Enhanced Primary Treatment (CEPT) process was studied on the enhancement efficiency of a municipal wastewater treatment plant in ...


    By University of Tehran

  • Sizes of particles formed during municipal wastewater treatment

    Volumetric diameters Dv and specific surface area SpS of sludge particles formed during chemical coagulation and electrocoagulation of sewage were determined. The obtained aggregate-flocs differed substantially in both Dv and SpS values. The differences in Dv and SpS values of the analyzed particles were ...


    By IWA Publishing

  • Why municipal wastewater treatment is important?

    Municipal Wastewater Treatment is the process of ejecting the harmful pollutants from wastewater. The main source of pollutants is the domestic use. The pollutants are treated by various methods like Physical, Chemical, and Biological process. The practice of municipal wastewater treatment is best encouraged these days. This treated resource is best for utilizing in raising the ...

  • Operating costs for reducing total emission loads of key pollutants in municipal wastewater treatment plants in China

    Total emission load reduction of COD, NH4-N, TN, and TP is the key measure in controlling water pollution and eutrophication. Municipal wastewater treatment plants (MWWTPs) are major contributors in lowering energy consumption and reducing pollutant discharge. The flow-based operating costs have not been directly established to relate to costs of pollutant reduction based on an investigation of ...


    By IWA Publishing

  • Co-digestion of press liquids of source-sorted municipal organic waste in anaerobic sludge treatment of municipal wastewater treatment plants

    This paper describes a semi-continuous laboratory-scale investigation of a potential co-substrate for mesophilic anaerobic sludge digestion in a municipal wastewater treatment plant. A feed liquid produced from source-sorted municipal organic waste by pretreatment with a screw press was subjected to the investigation. Quantities produced in press trials as well as the composition of the feed ...


    By IWA Publishing

  • Abatement efficiency of municipal wastewater treatment plants using different technologies (Orbetello Lagoon, Italy)

    Two small-scale municipal wastewater treatment plants (Neghelli and Terrarossa) discharging effluents into a lagoon of great environmental interest and highly stressed by tourism (Orbetello, Italy) were monitored over the year 2001. We evaluated plants' performances developing a general efficiency indicator of removal to select the suitable purification technology (activated sludge, Neghelli vs. ...


    By Inderscience Publishers

  • Bioavailability of pharmaceuticals in waters close to wastewater treatment plants: Use of fish bile for exposure assessment

    Pharmaceuticals are ubiquitous in surface waters as a consequence of discharges from municipal wastewater treatment plants. However, few studies have assessed the bioavailability of pharmaceuticals to fish in natural waters. In the present study, passive samplers and rainbow trout were experimentally deployed next to three municipal wastewater treatment plants in Finland to evaluate the degree of ...


    By John Wiley & Sons, Ltd.

  • Treatment of unpleasant odors in municipal wastewater treatment plants

    The purpose of this paper to present a case study on how to address the odor problem from secondary sources within a municipal wastewater treatment plant (WWTP) by first identifying the locations of the problem and second by evaluating alternative treatment technologies. The WWTP of Chania is a typical 100,000 equivalent inhabitants-facility in a warm semi-arid environment which is located close ...


    By IWA Publishing

  • Sewage treatment plant-case study

    Contributing to snowy regions in which the transportation of sludge is difficult In municipal wastewater treatment plant in snowy regions, snow-bound in winter, taking dewatered cake out regularly is sometimes difficult. Two problems were also presented in this municipal wastewater treatment plant, i.e., the difficulty of taking sludge out using carriers in winter, which had been ...


    By AMCON Inc.

  • Municipal wastewater treatment plants as pathogen removal systems and as a contamination source of noroviruses and Enterococcus faecalis

    Municipal wastewater treatment plants play a crucial role in reducing the microbial and pathogen load of human wastes before the end-products are discharged to surface waters (final effluent) or land spread (biosolids). This study investigated the occurrence frequency of noroviruses, Enterococcus faecalis and Enterococcus faecium in influent, final effluent and biosolids ...


    By IWA Publishing

  • Toxicity Assessment Assays in Greece

    Abstract :In this study the results of toxicity assessment assays in the area of Thessaloniki in Greece are presented.Daphnia magnatests were used for the assessment of freshwater and wastewater andArtemia salinatests for the assessment of seawater. There was increased toxicity in the seawater of inner Thermaikos gulf as well as in the freshwater of Koronia lake. Measures, taken to prevent toxic ...


    By Microbiotests Inc.

  • Emerging Technologies for Wastewater Biosolids Management

    This guide will help municipal wastewater treatment system owners and operators find information on emerging biosolids management technologies. Featured technologies can be used to reduce the volume of residuals to be managed, produce stabilized biosolids that can be used to help improve soil fertility and tilth, or promote the recovery of energy from biosolids. Technical and cost data for more ...

  • WEF Wet Weather Management Guidance: Risk Based Objectives

    The Water Environment Federation (WEF), under a Water Quality Cooperative Agreement with the U.S. Environmental Protection Agency, is developing a WEF guidance document focused on effective practices for managing peak wet weather flows at municipal wastewater treatment facilities. The wastewater industry has long been researching, documenting, and planning for wet weather flows for municipal ...

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