pretreatment dissolved air flotation Articles

  • Dissolved air flotation separation for pretreatment of membrane bioreactor in domestic wastewater treatment

    Due to requiring higher water quality standards over time, new technologies are being employed for wastewater treatment. Dissolved air flotation (DAF) and membrane bioreactor (MBR) technologies are widely employed as new technologies in wastewater treatment. DAF is used due to its excellent separation capability of suspended solids as well as oily material. MBR is used because it may provide a ...


    By IWA Publishing

  • Wastewater Treatment: Dissloved Air Flotation (DAF)

    Wastewater Treatment:  Dissolved Air Flotation (DAF) Filtration leads to water savings.  DAF pretreatment in the food industry can provide sustainable water cost savings.  Stuart Ward of Process Engineered Water Equipment, LLC explains efficient filtration is key.  Columbus Salame, South ...


  • 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

  • Wastewater pre-treatment in a confectionery industry

    Description of the plant In a first step, wastewater accruing from the production of marzipane is cleaned by a screen. As flow and load to the plant are highly variable depending on the production process an aerated mixing and balancing reactor has been installed to equalise flow and load before final chemical pre-treatment. After adding of chemicals for precipitation and flocculation ...

  • Treatment Of High Strength Chemical Industry Wastewater Using Moving Bed Biofilm Reactor (MBBR) and Powdered Activated Carbon (PAC) Technology

    A new Waste Recycling Facility (WRF) was created at the Sasol coal to liquids facility in Secunda, South Africa with a wastewater treatment system that includes equipment to treat the wastewater and storm water through several steps including equalization, oil removal (gravity separation and dissolved air flotation), lime neutralization/metals precipitation, back-neutralization, fixed-film ...

  • New Energy BFP case study

    Clarification and Dewatering Control Industrial TSS The New Energy Corporation facility in South Bend IN produces 380,000 M3 per year (100 million gallons per year) of ethanol from corn feedstock. It also produces about 272,000 tonnes per year (300,000 tons per year) of carbon dioxide and 299,000 tonnes per year (330,000 tons per year) of distillers' dried grains with solubles (DDGS) ...


    By Komline-Sanderson

  • Sustainable Recycling Company-bioFAS MBBR case study

    The Problem: The Sustainable Recycling Company centralized wastewater treatment (CWT) facility located in Connecticut. They process oily wastewater streams from a variety of sources via an integrated treatment process using collection, oil water separation, ultrafiltration, chemical precipitation. The pretreated wastewater is highly loaded with BOD and COD and the ...


    By BioprocessH2O

  • Trimming the Waste

    With an inefficient wastewater treatment system going unused and escalating sewer surcharges of more than $30000 a month, Alpenrose Dairy had to find a better way to do business. The Portland, Ore.-based processor of milk, ice cream, cottage cheese and sour cream had installed a wastewater treatment system 10 years earlier, but it was retired after several years of high operating costs because ...


    By World Water Works, Inc.

  • WasteWastewater pre-treatment in a milk-processing company

    Description of the plant The wastewater from the production is buffered in a pump sump which is designed to buffer peaks of flow and load. The pump sump also works as a fat trap. From this stage, the water is lifted to the biological reactor where organic substances which are mainly milk sugar and other organic compounds are decreased by microbiological actifity. The ...

  • Case study – Nalco - GEM technology successfully implemented at food processor

    Situation A Midwest food processor used multiple and parallel batch sedimentation reactors with a decanting treatment system to handle waste flows of 100,000 gallons per week. Significant manual attention and operation was required because the flows varied widely based on production schedules. Once sedimentation/decant was accomplished, the supernatant was discharged to city POTW and the ...


    By Clean Water Technology, Inc.

  • Central treatment of the industrial wastewater in Kuwait

    Description of the plant In order to treat the wastewater accumulating from all industrial plants located in Kuwait, TIA planned and built up a central Wastewater Treatment Plant in the Kuwaiti desert. The plant consists of three receipt stations, three pre-treatment lines and two lines for biological wastewater treatment. Each day, 200 to 400 tank trucks deliver the ...

  • Wastewater treatment in a milk-processing company

    Description of the plant The accruing wastewater from the production of cheese and milk products is collected in a centralised pump sump and given to a first pre-treatment step. This step includes a separation of bigger parts by a sieve and a flocculation step with a dissolved air flotation for elimination of fats and cheese particles. After that, the pre-treatened water is buffered ...

  • Wastewater Pre-Treatment for the food industry (vinegar and dressings)

    Description of the plant Highly polluted wastewater arises from the production of high-quality vinegar, delicatessen and mustard products. Most of the COD load here is formed by lipophil substances which have to be decreased before to municipal sewer net. Peaks of load and flow are buffered in a mixing and balancing reactor to achieve an homogenised flow to the ...

  • Waste Management Solutions for Business

    How to win the race for everyone Waste Management Solutions for Business Industry will always lead the way in the adaptation of new technology, and especially the technology of conservation. This is not necessarily for any ideological reason, but because the people who manage water use better understand the economic incentives for adopting new ...

  • What is Wastewater?

    What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, ...

  • Case study – frozen food applications

    Introduction Clean Water Technology Inc. (CWT), the creator of the Gas Energy Mixing (GEM) System, offers the most advanced primary treatment system on the market. The GEM System provides superior reduction of total suspended solids (TSS), biological and chemical oxygen demand (BOD/COD), fats, oils and grease (FOG) and turbidity and at the same time provides complete expandability in terms ...


    By Clean Water Technology, Inc.

  • Treatment of Oily-Waste Process Streams

    Standard oily-wastewater remediation relies on API 650 for oily-wastewater separation (O/W/S) treatment using gravimetric lagoon separation, then reprocessing the recovered floatable slop oil, followed by chemical flocculation, then reprocessing the recovered oily sludge, followed by dissolved air flotation (DAF), then using holdingpond clarification of supernatant wastewater, before ...


  • Electrocoagulation Wastewater Treatment: Specialized Technology to meet the needs of food & beverage wastewater

    The effects of water scarcity and stricter environmental regulations placed on water usage are increasing the cost of using freshwater globally. The consequences of these increasing costs on food and beverage companies are twofold, since the companies are charged for both the water that they utilize in their processes and on their wastewater discharge. Additionally, the food and beverage industry ...

  • HS-200 Stands the test of heavy manufacturing

    A manufacturer of aircraft component generates a free and emulsified oily wastewater, which results from their machining, milling, cutting, and other operations. Presently, they are using skimmers and dissolved air flotation to remove oil from the water. To remove their heavy metals they follow up with flocculation, precipitation and clarification. Due to the rapidly ...


    By Hydrosil International

  • Electrocoagulation Wastewater Treatment – An Application To Sustainably Reuse Textile Wastewater

    The textile industry is a water consumption intensive industry. Water is utilized for cleaning the raw material, and for the different steps in the textile dyeing process. Due to the effects of water scarcity and stricter environmental regulations, the cost of fresh water utilization has increased worldwide. In addition, the textile industry is faced with pressure by government regulators to move ...

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