activated sludge service Articles

  • Los Angeles County WRRF Embraces Codigestion

    Technology to produce food waste slurry key to project implementation - and helps generators comply with California organics recycling mandates. The Sanitation Districts’ JWPCP in Carson (CA) treats an average of 280 million gallons/day of wastewater. One of the two anaerobic digestion tanks above has been used for codigestion, with the second serving as the control. Photos ...


    By BioCycle Magazine

  • The climb to the top

    Back in the late 1980’s when market drivers created the cost-effective option of using above-ground circular tanks for industrial activated sludge processes, there were some early valuable lessons for both aeration equipment manufacturers and plant operators. As production plants got away from in-ground basins, one of the more simple innate operational checks became more challenging; ...


    By KLa Systems, Inc.

  • What are the parameters of an extended-aeration activated-sludge system?

    The activated sludge process is the most widely used biological water and wastewater treatment. As is well known, by its means, suspended-growth microorganisms are applied to breakdown wastes. Aeration, the mixing of air and a liquid, is the means used to speed the reactions involved. Aeration methods include spraying the liquid into the air; diffusing air into the liquid or agitating the liquid ...

  • Surface active solutions tank cleaning & crude oil sludge removal

    For over ten years Surface Active Solutions has led the way in developing integrated microemulsion solutions for tank cleaning operations, crude oil sludge treatment and slops treatment. The company, with offices in Houston and Grangemouth (Scotland) aims to create real synergy in its approach to tank cleaning by combining its microemulsion chemistries with automated tank cleaning systems. The ...

  • Respirometry study of two different wastewater samples on COD fractioning & biodegradability for a specific activated sludge process and nitrification case study

    Preliminary This service was made according to customer order points and indications from Hydrolab Microbiológica (Surcis collaborator) The client wanted Surcis to carry out a study about COD fractioning and nitrification. For this study the client has provided to Surcis the following: Process type: Activated sludge - Extended aeration 2 ...


    By SURCIS, S.L.

  • Basis for the development of sustainable optimisation indicators for activated sludge wastewater treatment plants in the Republic of Ireland

    This paper describes the basis of a stakeholder-based sustainable optimisation indicator (SOI) system to be developed for small-to-medium sized activated sludge (AS) wastewater treatment plants (WwTPs) in the Republic of Ireland (ROI). Key technical publications relating to best practice plant operation, performance audits and optimisation, and indicator and benchmarking systems for wastewater ...


    By IWA Publishing

  • BM respirometry study about nitrification inhibition and actual aeration capacity in an activated sludge process case study

    Study for municipal WWTP in Spain This study is ordered to SURCIS as a consequence of the low process performance, practical absence of nitrification treatment. By other side, the mixed-liquor presented some abnormal features such as weakness, dark colour and abundant white foaming. Data for study interest Aeration system: fine ...


    By SURCIS, S.L.

  • Special activated sludge system works well as small town`s first WWTP

    The public works superintendent and his consulting engineer here report successful operation of a special activated sludge wastewater treatment plant (WWTP) for St. Philip’s since the end of 2003, with a similar and larger plant scheduled to start up for Portugal Cove later this year. The currently operating plant, with design average flow of 7.7 liters/sec. and peak flow of 28.5 liters/sec., has ...


    By Fluidyne Corporation

  • BM-T respirometry study about the adaptation of a potential toxic industrial wastewater to an specific activated sludge case study

    Enterprise: CELANESE CHEMICALS IBÉRICA, S.A. (Tarragona – Spain) Premier materials for painting industry Celanese enterprise, before the SURCIS study, in several laboratories had already tried several analysis of its industrial wastewater in order to find out if it could be certain degree of toxicity when wastewater will be treated with activated ...


    By SURCIS, S.L.

  • Sludge reduction performance focus: Lagoon sludge case study

    In-Pipe Technology Pipe Technology® Company, Inc., Company, Inc., Company, Inc., is an effective, environmentally is an effective, environmentally is an effective, environmentally-friendly, and fiscally friendly, and fiscally responsible method to reduce accumulated lagoon solids. By reducing accumulated sludge volumes by 40% to 85%, In- volumes by 40% to 85%, In-Pipe Technology has helped ...

  • WWTP Sludge reduction case study

    Introduction The City of Spring Valley, IL was seeking bioaugmentation to reduce the economic burden of sludge dredging and disposal and to evaluate the possibility of restoring the microbiological activity in the lagoon. The lagoon was flooded several times from the near-by Illinois River, which created different strata of inorganic silt/organic sludge and densely packed sludge at the ...

  • Faecal sludge management - Malaysia Philippines

    1. Overview and key points Malaysia has been recognised to have adopted a good sanitation model through the use legislative reforms and implementation models. A firm set of guidelines along with clear knowledge on the role played by every stakeholder, especially that of developers whose responsibility it is to construct their own wastewater treatment, enabled an increase in sanitation coverage ...


    By IWA Publishing

  • The Dangers of Hydrogen Sulfide and Filtration with Activated Carbon

    Hydrogen sulfide (H2S) is a poisonous, highly flammable, colorless gas that is associated with a ‘rotten egg’ odor. As stated by cchealth.org, “hydrogen sulfide is created naturally by decaying organic matter and is released from sewage sludge, liquid manure, and sulfur hot springs.” It also is a by-product from industrial processes such as natural gas processing, ...


    By General Carbon Corp.

  • Bioaugmentation in Sewer network reduces sludge production case study

    Sludge is an obvious by-product generated from the physical, chemical and biological treatment processes of a wastewater treatment plant (WWTP) as shown in Figure 1. Sludge management, which includes treatment, hauling, and disposal, is one of the biggest burdens facing municipal plants. The costs of sludge management account for 55% of the total WWTP operating cost and 35° o of the capital ...

  • Water Jet Floor Cleaning and Effluent Recycling System: SCS Specialised Services

    SCS Specialised Services Pty Ltd has developed a method of cleaning industrial concrete floors which recycles the wash water (the Recovery Jet system). On average, this has resulted in an 85 per cent reduction in the quantity of effluent generated. Background SCS Specialised Services Pty Ltd is a small floor cleaning and protective coatings business, specialising in cleaning ...


  • Alpheus Environmental and WPL Ltd partner to supply MOTO motorway services, Winchester case study

    Alpheus Environmental Ltd was employed by motorway services provider MOTO Hospitality Ltd as principal contractor to design and build a replacement effluent treatment plant for the busy motorway services at Winchester.  WPL Ltd, Alpheus’ partner for this project, provided the process design, manufacturing, mechanical and electrical installation, supply and commissioning of all the ...


    By WPL Ltd

  • Savanna wastewater treatment plant case study

    Performance History and Discussion Jackson, MS selected In-Pipe Technology Company, Inc. for the Savanna WWTP with goals to reduce the quantity of waste sludge for disposal and control FOG in the collection system and at the plant. Jackson, the capital and largest city in Mississippi, was looking for ways to reduce sludge expenses from polymer to hauling and disposal fees. In-Pipe ...

  • Municipal WWTP Digester Cleanout - Cambridge, Ohio (Wastewater Treatment) - Case Study

    THE CHALLENGE Cambridge, OH is a small town of 13,000 residents. Tim Wheatley, Superintendent of the Water Pollution Control Center operates a 3 MGD activated sludge plant at about 80% of its capacity. The plant recently switched from anaerobic digesters to an aerobic digester. They had been dewatering Iheir sludge on four vacuum assisted drying beds housed in a large shed. Alternatively, ...

  • Texas Housing Development

    Burdened with a failing packaged extended aeration system, the Brookeland Freshwater Supply District near Jasper, Texas could not meet the State of Texas effluent discharge requirements. The existing plant also requiredextensive service and maintenance to keep the outdated equipment operational. Left with no other choice, the plant needed to be replaced. The Water District evaluated several ...


    By Fluidyne Corporation

  • Making urban excreta and wastewater management contribute to cities' economic development: a paradigm shift

    Cities, as engines of economic growth and social development, require large quantities of natural resources to meet their inhabitants' economic and social needs. Good infrastructure and reliable service provision are key to sustaining cities' development. In this regard, they enhance investment opportunities and service access to vulnerable populations. In response to the lack of sanitation ...


    By IWA Publishing

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