aerobic wastewater treatment plant Articles

  • Alternatives for energy production in aerobic wastewater treatment facilities

    Using technologies such as anaerobic digestion for energy generation from wastewater demands a change in infrastructure that several treatment works are not prepared to immediately implement. This works explores the use of energy production technologies to increase the sustainability of conventional aerobic wastewater treatment plants. The first option considered sludge (a by-product from ...


    By IWA Publishing

  • Assessment of an aerobic treatment system for wastewater from a meat processing plant

    This article presents the assessment of a wastewater treatment system by means of aerobic pools from a slaughterhouse, which presents eliminations below 80% in parameters such as BOD5, SST and grease and oils during 50% of its operating time.Keywords: wastewater treatment, contaminants, BOD, biochemical oxygen demand, TSS, total suspended solids, environmental pollution, ...


    By Inderscience Publishers

  • The role of respirometry in maximising aerobic treatment plant efficiency

    Wastewater treatment plants are coming under increasing pressure to increase their efficiency of operation. There are two objectives in this. The first is to reduce the cost of treatment. The second is a response to new legislation aimed at reducing the carryover of toxic materials to receiving waters. In order to achieve this, it is necessary to focus on the pivotal role of bacterial respiration ...

  • Heavy Industry Plant Wastewater Treatment, Recovery ang Recycle Using Three Membrane Configurations in Combination with Aerobic Treatment

    ABSTRACTIn the late 1990’s a major diesel engine manufacturing plant began evaluation of wastewater treatment technologies that would improve the quality of wastewater discharge, would produce treated effluent of reduced oil and grease, BOD and COD load suitable as feed to their sanitary waste biological treatment plant, and eliminate the costs and risks associated ...

  • Aerobic biological treatment of thermophilically digested sludge

    Aerobic biological treatment of digested sludge was studied in a continuously operated laboratory set-up. An aerated reactor was filled with thermophilically digested sludge from the Moscow wastewater treatment plant and inoculated with special activated sludge. It was then operated at the chemostat mode at different flow rates. Processes of nitrification and denitrification, as well as ...


    By IWA Publishing

  • Sequential anaerobic–aerobic biological treatment of colored wastewaters: case study of a textile dyeing factory wastewater

    In the present study the feasibility of the use of a bacterial batch sequential anaerobic–aerobic process, in which activated sludge was used in both parts of the process, for pretreatment of wastewater generated by a textile dyeing factory has been considered. Activated sludge used in the process was obtained from a municipal wastewater treatment plant and adapted to real dyeing wastewater ...


    By IWA Publishing

  • Neptune beach wastewater treatment plant case study

    Performance History and Discussion The City of Neptune Beach chose In-Pipe Technology to improve effluent quality and reduce operating expenses at the WWTP. In-Pipe Technology adds high concentrations of live, heterotrophic bacteria into the collection system - transforming it into a pretreatment reactor. As a result, the incoming pollutant load is lower and the effectiveness of the ...

  • Improving aeration control at the Ljubljana wastewater treatment plant

    This paper describes an improvement to the aeration control at the Ljubljana wastewater treatment plant. Several changes were made to the existing aeration control. An adjustment to the parameters of the common air pressure controller contributes to a more responsive operation of the compressors. The introduction of the air pressure set-point controller adjusts the air pressure in the common air ...


    By IWA Publishing

  • Ft. Dodge wastewater treatment plant case study

    Performance History and Discussion USW Utility Group who manages the Ft. Dodge Wastewater Treatment Plant selected In-Pipe Technology to reduce lagoon sludge levels and delay the lagoons' scheduled 2011 dredging event, as well as to improve process operation and efficiency. Secondary project objectives include the improvement of conditions in the City's collection system by removing fats, ...

  • Membrane thickening aerobic digestion processes

    Sludge management accounts for approximately 60% of the total wastewater treatment plant expenditure and laws for sludge disposal are becoming increasingly stringent, therefore much consideration is required when designing a solids handling process. A membrane thickening aerobic digestion process integrates a controlled aerobic digestion process with pre-thickening waste activated sludge ...


    By IWA Publishing

  • Upgrading secondary biological treatment of wastewater using anoxic/aerobic attached growth systems for effluent quality improvement

    A pilot plant was constructed and operated using both Aerobic Submerged Fixed Film (ASFF) and Anoxic/Aerobic Submerged Fixed Film (A/ASFF) processes at different loading rates in the range of 0.03–0.3 g BOD.g-1 BVS.d-1 corresponding to the Hydraulic Retention Times (HRTs) in the range of 0.7 to 8 hr. The results obtained revealed that both the ASFF and the A/ASFF ...


    By Inderscience Publishers

  • Light Industrial Wastewater Treatment Plant - Case Study

    The Challenge Stepan Company is a global manufacturer of specialty and intermediate chemicals used in consumer products and industrial applications. Stepan is a leading merchant producer of surfactants, which arc the key foaming and cleaning ingredients in consumer and industrial cleaning compounds including detergents, shampoos, lotions, toothpastes and cosmetics. Stenan's Millwood Plant ...

  • Aerators Enhance Aerobic Digestion Process

    The city of Eden,N.C.,operates an extended aeration process designed for an average flow rate of 13.5 mgd with a mixed liquor suspended solids concentration that typically checks in about 6,000 mg/l. This high biomass concentration is necessary to provide a well-settling sludge and good effluent quality. Further, the plant influent is approximately 40% domestic wastewater and 60% industrial ...


    By S & N Airoflo, Inc.

  • Evaluation of Alternative Operation Modes for Aerobic Digester at the Fountain Hills Sanitary District Wastewater Treatment Facility

    Recycle streams from sludge digestion facilities to activated sludge processes can be important in the overall performance of wastewater treatment facilities. The recycling streams at the wastewater treatment plant for the fountain Hills Sanitary District Wastewater Treatment Plant include digested sludge dewatering centrate, waste activated sludge thickening centrate, and filter backwash water. ...

  • Food Manufacturing Wastewater Treatment

    Facility Background The new YIBO, Inc. facility in Warrenton MO is the firm's first US production plant. Using state of the art equipment they will manufacture 26 varieties of soy sauce products for the commercial market. Five gallon containers will be distributed nationwide. As a discharge requirement the local POTW requested a wastewater plant for effluent control prior to ...


    By Auquix, LLC

  • Pre-Treatment of Sludges Before Aerobic Digestion to Enhance Sludge Quality

    ABSTRACTBench scale experimentation was completed to assess the potential of using a short residence time pre-treatment reactor upstream of aerobic digestion to enhance the destruction of pathogens. The impact of aeration, temperature, hydraulic residence time, solids concentration, feeding frequency and mechanical shearing on the pre-treatment process was investigated. Subsequent testing ...

  • Evaluation of the aerobic and anaerobic biodegradability of the antibiotic norfloxacin

    The purpose of studying the biodegradability of pharmaceutical compounds is to evaluate their behaviors in relation to the treatment processes generally used in domestic and industrial wastewater treatment plants. The antibiotic norfloxacin was found to be a recalcitrant compound. The studies conducted showed norfloxacin removal rates of 12% and 18% when biomasses from treatments ...


    By IWA Publishing

  • Sewage treatment plant

    BONO ARTES has developed an activated sludge process called BIOCLAR, which is a great technological step forwards compared to conventional methods. A large part of civil and industrial installations, especially in developing countries, is located in remote and secluded areas where there is no possibility for connection to a public sewer. On the other hand, the minimisation of the impact on the ...


    By Artes Ingegneria SpA

  • The occurrence and fate of phenolic compounds in a coking wastewater treatment plant

    The occurrence of 14 phenolic compounds (PCs) was assessed in the raw, treated wastewater, dewatered sludge and gas samples from a coking wastewater treatment plant (WWTP) in China. It was found that 3-cresol was the dominant compound in the raw coking wastewater with a concentration of 183 mg L−1, and that chlorophenols and nitrophenols were in the level of μg L−1. ...


    By IWA Publishing

  • Reductions in greenhouse gas (GHG) generation and energy consumption in wastewater treatment plants

    Greenhouse gas (GHG) emission and energy consumption by on-site and off-site sources were estimated in two different wastewater treatment plants that used physical–chemical or biological processes for the removal of contaminants, and an anaerobic digester for sludge treatment. Physical–chemical treatment processes were used in the treatment plant of a locomotive repair factory that ...


    By IWA Publishing

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