secondary sewage filtration Articles

  • Reducing the effect of cyanobacteria in the microfiltration of secondary effluent

    Cyanobacterial blooms in the lagoons of sewage treatment plants can severely impact the performance of membrane plants treating the effluent. This paper investigates the impact of Microcystis aeruginosa in a secondary effluent on the microfiltration filterability and cleaning of the membrane. Alum coagulation and dissolved air flotation (DAF) were investigated to remove the algae and so enhance ...


    By IWA Publishing

  • The use of sewage sludge compost for improving reedbeds performance

    In a wastewater of medium strength, about 75 % of the suspended solids and 40 % of the filterable solids are organic in nature. The parameter used for measuring the strength and the quantity of the organic substances in the wastewater is the Chemical Oxygen Demand (COD) (Aggelakis and Tchobanoglous, 1995; Tchobanoglous and Burton, 1991). Degradable organic matter in wastewater, whether soluble or ...


    By ORBIT e.V.

  • Recovery of reusable water from sewage using aerated flat-sheet membranes

    Continuous developments and advances in membrane technology allow recovering to large extent reusable water from untraditional water sources, such as municipal effluents. In this paper, operational results and preliminary cost-analysis of a microfiltration (MF) process used for raw sewage and secondary effluent polishing are given. The research was conducted with a 22 sandwich-type flat-sheet ...


    By IWA Publishing

  • Intermittent operation of low pressure UF membranes for sewage reuse at household level

    A household-scale wastewater treatment system was operated with domestic sewage. The system could recover gardening/irrigation water from raw sewage or secondary effluent by low pressure ultrafiltration (UF). The UF membranes (surface area = 3.5 m2, pore size = 0.04 μm) were operated at constant transmembrane pressure (0.13 bar). The proposed technology was examined for ...


    By IWA Publishing

  • STP Plant Supplier in Chennai – sewage treatment Plant in Chennai Tamilnadu

    RRR ENVIRO SYSTEMS STP plant supplier in Chennai Tamilnadu .We are the Manufacturing and supply of all the types of STP Plant like ASP & FBBR Methods in 10 KLD STP,50 KLD STP, 100 KLD STP, 150 KLD STP, 200 KLD STP, 300 KLD STP, 400 KLD STP, 500 KLD STP, 600 KLD STP with the best rates available in the Indian Market. Process Of STP plant The sewage shall be passed through the screen chamber to ...


    By RRR ENVIRO SYSTEMS

  • Higher filtration rates mean better results for Filtronics customers

    Filtronics has been ahead of the curve in terms of providing create, effective and cost efficient water treatmentsystems for city water ...


    By Filtronics, Inc.

  • Filtronics offers the lowest lifecycle costs for its water filtration systems

    One of the biggest factors those seeking city water treatment or wastewater treatment systems must take into account is cost. Many manufacturers of water treatment systems make the cost of operating their ...


    By Filtronics, Inc.

  • World’s largest compressible media filtration plant eliminates combined sewer overflows, with potential for dry-weather use

    The City of Springfield, Ohio, recently opened its 100 MGD enhanced high-rate treatment facility, designed to treat and disinfect combined high-volume stormwater and wastewater flows generated by wet-weather conditions. Utilizing EPA-documented Compressible Media Filtration technology – FlexFilter™ from WesTech – the system can also provide tertiary filtration and disinfection ...


    By WesTech Engineering, Inc.

  • Full Scale Test on Chemical P Removal During a Step Feed BNR Study at John E. Egan Water Reclamation Plant

    ABSTRACTA full scale nutrient removal study was conducted at the 30-MGD John E. Egan Water Reclamation Plant with a single-stage nitrification activated sludge process and sand filtration. One quarter of the plant’s secondary treatment capacity was used in the study. Simultaneous nitrogen removal through a step feed BNR process and phosphorus (P) removal by chemical precipitation with ferric ...

  • Compact solutions for advanced wastewater treatment aiming to recover and reuse

    The environmental pollution caused from unregulated raw sewage discharge coming from small municipalities, remote communities, small housing complexes, tourist facilities, camps, factories, harbors and other similar sources that until now was difficult to construct suitable Treatment Facilities is quite extensive in many areas and is now the time for the authorities to take action. The necessity ...


    By DEVISE ENGINEERING S.A.

  • Power plant converts gray water into boiler feedwater using hero technology

    The Facility The Bajio Power Project is a 600 MW combined cycle project owned by the Energía Azteca, a Mexican project company jointly owned by InterGen and American Electric Power. The build, own and operate facility is in commercial operation near the municipality of San Luis de la Paz in the state of Guanajuato, approximately 160 miles from Mexico City. In 1999, ...

  • Filtronics offers toilet to tap solutions for its clients nationwide

    Filtronics first opened its doors in 1974, and in the nearly for decades since it has been their mission to provide efficiency and economy in the water treatment systems they create. Surface water, ground water and  ...


    By Filtronics, Incorporated

  • The Devil is in The Details: Full-Scale Optimization of the EBPR Process at the City of Las Vegas WPCF

    ABSTRACTTo optimize the enhanced biological phosphorus (P) removal (EBPR) at the City of Las Vegas’ Water Pollution Control Facility, the effects of dissolved oxygen (DO) level, hydraulic retention time in aeration basin and the operation mode of UCT versus A2O on phosphorus removal performance were investigated. DO levels in the range of 0.5 to 3.5 mg/L in the aeration basin did not have ...

  • Water Reuse Terminology

    All water on Earth is used and reused, over and over, in an elegant water cycle. Water reuse occurs in various ways on a daily basis. It happens when a community’s treated wastewater is discharged into rivers or other water bodies. If you live in a community downstream of another, chances are you are reusing water from an upstream town. Scientifically proven advances in water technology ...


    By WateReuse

  • Advanced Water Treatment Technologies May Bring Purified Water to San Diego

    'In four years, half of San Diego may be filling its glasses with tap water that once ran through its toilets,' reported the San Diego Union-Tribune recently. A plan to mix 'repurified water' with the City's raw drinking water reservoir could become a reality, thanks to the wonders of water treatment technology. Such a possibility elicits various reactions including disgust, marvel and fear. ...

  • Rold Model Water Recycling Program

    ABSTRACTThe Viejas Band of Kumeyaay Indians, a federally recognized tribe, vested with authority by the U.S. Environmental Protection Agency (USEPA), form the Tribal Government to regulate all activities concerning water quality issues within the reservation boundaries. The Reservation has 400 non-transient residents and an average of 5,000 transient residents. The transient population visits the ...

  • Water recycling project - Durban South Africa

    1. Overview and key points South Africa’s first private water recycling project, operating on a 20 year Buy-Operate-Transfer (BOT) basis has turned out to be a success. Constructed in order to treat Durban’s wastewater, it provides a good example of Public Private Partnership (PPP), where appropriate wastewater treatment technology was used in order to provide effluent of a ...


    By IWA Publishing

  • Utilizing unconventional water sources for industrial reuse

    Reclamation and reuse of unconventional wastewater sources for plant raw water, cooling water and process pre-treatment has increased substantially due to increases in the cost of drinking water, recurring water shortages that can impact business operations, and tightening government regulation. Water is required in almost every industrial sector for the processing and manufacture of products. ...


    By WesTech Engineering, Inc.

  • Wastewater Mining and Reuse: Creating Benign Future Scenarios

    Wastewater mining: In addition to being perhaps the most uninviting combination of words, it sounds like a most unlikely idea. But for almost 30 years, Aqueonics, now headquartered in Greenville, SC, has pioneered such systems, starting in the ’80s, with its first wastewater mining project. For that project, Aqueonics provided an onsite or decentralized treatment system for a developer in ...


    By Aqueonics, Inc.

  • Optimizing Wastewater Treatment

    ' Growing volumes of both industrial and municipal wastewater are being discharged to surface waters but the treatment provided frequently is inadequate to protect the desired uses of the receiving waters. With limited resources in terms of both institutional capacity and finance, governments face difficult choices in optimizing their investments in municipal systems and establishing practical ...


    By The World Bank

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