wastewater effluent Articles

  • Effluent

    Effluent is an outflowing of water or gas from a natural body of water, or from a human-made structure. Effluent is defined by the United States Environmental Protection Agency as “wastewater - treated or untreated - that flows out of a treatment plant, sewer, or ...


    By IWA Publishing

  • Chlorine Disinfection of Blended Wastewater Effluents

     KeywordsBlended Wastewater, Disinfection IntroductionFlow to publicly owned treatment works (POTWs) increases during wet weather events, due to intrusion of storm water into sanitary collection systems and use of combined sewer systems. When such flows exceed the hydraulic capacity of a POTW alternate flow management techniques must be employed to ensure that ...

  • Distribution of pyrethroid insecticides in secondary wastewater effluent

    Although the freely dissolved form of hydrophobic organic chemicals may best predict aquatic toxicity, differentiating between dissolved and particle bound forms is challenging at environmentally relevant concentrations for compounds with low toxicity thresholds such as pyrethroid insecticides. We investigated the distribution of pyrethroids among three forms: freely dissolved, complexed with ...


    By John Wiley & Sons, Ltd.

  • Final effluent monitors protect wastewater treatment efficiency

    Southern Water operates 370 wastewater treatment plants (WWTP), many of which are unmanned for most of the time and most have numeric environmental permits, so a network of online monitors has been established to improve treatment and protect discharge compliance. This has involved the installation of final effluent monitors at over 300 sites in a programme that has lasted for more than ten ...


  • Wastewater effluent characteristics from Moroccan textile industry

    The objectives of this work were to carry out a complete characterization of textile wastewater, resulting from a textile unit located in the Marrakesh region. A physico-chemical characterization has been performed, focused on organic and toxicological aspects. The cladoceran Daphnia magna was used as the sensor organism and lethal concentration as a criterion to measure the toxicity of ...


    By IWA Publishing

  • Treatment of hospital wastewater effluent by nanofiltration and reverse osmosis

    Considerable concern exists regarding the appearance and effects of trace and ultra trace pollutants in the aquatic environment. In this context, it is necessary to identify relevant hot spot wastewater – such as hospital wastewater – and to implement specific wastewater treatment solutions. Membrane bioreactor (MBR) technology seems to be a suitable pre-treatment approach for the subsequent ...


    By IWA Publishing

  • Improving Winery Lagoon Performance, Sludge Removal & Efficiency - Case Study

    Overview A winery in California faced the challenge of optimizing and treating their wastewater pond in a sustainable manner. The winery had brush rotors frequently breaking down, which were very difficult and time consuming to repair. They were seeking a more reliable option. Aeration Industries International provided that solution in more ways than one. ...

  • What Is Zero Liquid Discharge and How Does It Work?

    Not every industrial facility that produces wastewater will require zero liquid discharge (ZLD). It is usually looked to as a last resort because it can be a complex process that requires a high initial investment. If a facility is located on a site that has severe water scarcity issues and/or astronomical discharge fees, it might be ...


    By SAMCO Technologies, Inc.

  • The 'whole-effluent' toxicity approach

    The identification and quantification of effluent toxicity plays an important role in the evaluation of harmful impacts on the aquatic environment. The aim of this study was to demonstrate the advantages of using the 'whole-effluent' toxicity approach compared to prediction of toxicity using key toxic compounds. An underestimation of 'whole-effluent' toxicity was always observed using bacteria, ...


    By Inderscience Publishers

  • Recent Papers on Industrial Effluents

    This study offers a solution for reducing the environmental effect of wastewaters generated by the olive-oil industry. Olive-oil companies produce variable quantities of wastewaters, which require treatment for disposal or reuse. Today, regulations are becoming increasingly strict regarding the parameters measured in these effluents. In Spain, the resolution by the ...


    By IWA Publishing

  • Whole Effluent Toxicity Testing

    What is Whole Effluent Toxicity (WET) testing? Whole Effluent Toxicity (WET) testing is an important component of the U.S. Environmental Protection Agency’s (USEPA’s) integrated approach for detecting and addressing toxicity in surface waters. The National Pollutant Discharge  Elimination System (NPDES) permit program, authorized by the Clean Water Act, controls water pollution by ...

  • System for bioremediation of effluents

    Executive Summary The remediation process of commercial, municipal, industrial and agricultural wastewaters has employed combinations of sulfuric acid, caustic, petroleum based solvents and synthetic emulsifiers, which are either toxic or generally non-biodegradable. An alternate method using naturally occurring microorganisms has been utilized for many years to facilitate the remediation ...


    By NCH Corporation

  • Effluent to Energy and It Is Renewable

    The Systems Conveyance and Operations Program (SCOP), located in Clark County, Nevada, will enable the Clean Water Coalition (CWC) to improve the water quality of Lake Mead, the main water source for the Las Vegas Valley, and to meet the increasing water demands of its four member agencies: the City of Las Vegas (CLV), the Clark County Water Reclamation District (CCWRD), the City of Henderson ...

  • Study on the reuse of zamyad factory wastewater treatment plant effluent in irrigation

    Water shortage is one of the main obstacles in development of green areas in many countries especially in those which have less amount of water. Considering growth and expansion of communities and cities along with industrial development, green areas development is also necessary. In developed countries together with industrial development, applied studies on reusing treated wastewater have been ...


    By University of Tehran

  • Efficacy of Advanced Oxidation Processes for Elimination of Objectionable Contaminants from Wastewater Effluent

     ABSTRACT Increasing demand for reclaimed water from wastewater treatment facilities has revolutionized the need for awareness of effluent quality and its properties. Wastewater can be made suitable for many reuse applications. Many of these applications for reclaimed water in industry, agriculture, and other beneficial uses have required stricter controls on the effluent quality from ...

  • Potential reuse of a leather tanning and an urban wastewater treatment plant effluent in Italy

    This study aimed to evaluate the potential reuse of a leather tanning district and an urban wastewater treatment plant (UWWTP) effluents. The UWWTP discharges into the Sarno river which is one of the most polluted river in Europe. A water restoration program covering the rationalisation of the water use between industry and irrigation is in progress for this river. However, no use for fire ...


    By Inderscience Publishers

  • Electrochemical disinfection of secondary wastewater treatment plant (WWTP) effluent

    In this work the electrochemical disinfection of the effluent of a secondary wastewater treatment plant is investigated. In the experimental work, performed on-site with real effluents of the WWTP located in Vuelta Ostrera (Cantabria, Spain), boron-doped diamond (BDD) electrodes were employed. The initial concentration of E. coli in the effluent of the WWTP varied in the range ...


    By IWA Publishing

  • Advanced treatment of Membrane Bioreactor (MBR) effluents for effective wastewater reclamation

    One of the two main objectives of this work is to oxidize MBR effluents with ozone/peroxide in high pH conditions in order to improve oxidation of pharmaceuticals, which could efficiently be rejected by the nanofiltration (NF) stage. The other main objective is to effectively oxidize of dissolved organic carbon (DOC) in MBR effluents in order to decrease fouling in the filtration stage. In this ...


    By IWA Publishing

  • Membrane filtration of municipal wastewater effluents for implementing agricultural reuse in southern Italy

    Membrane filtration was investigated at field scale in order to assess its effectiveness for reusing municipal effluents in agriculture. The study was started on April 2002 and ended on September 2007, as part of a national R&D project (AQUATEC). Preliminary results, which we already reported elsewhere, concerned the first two project years while this paper refers to the subsequent period. Three ...


    By IWA Publishing

  • Photocatalytic inactivation of E. faecalis in secondary wastewater plant effluents

    Photocatalytic inactivation of Enterococcus faecalis using TiO2 suspensions was investigated and compared to the inactivation of the most commonly used faecal indicator strain Escherichia coli. In contrast to the inactivation in pure deionized water, disinfection of effluents from the biological process of an urban wastewater plant showed a longer initial lag phase and higher ...


    By IWA Publishing

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