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

  • The development and application of the hybrid centrifugal - dissolved air flotation system for wastewater treatment

    Abstract Solid/liquid separations are integral part of any wastewater treatment system. Particles heavier than water are commonly separated in sedimentation clarifiers. On the other hand, particles with densities lower than that of water are most often separated with flotation systems. This manuscript describes the development of hybrid centrifugal - dissolved air flotation system. The ...

  • 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 ...


  • Flocculation - Flotation pretreatment improves operation of MBR installed to treat snack food manufacturing wastewater

    Abstract Large food manufacturing company has facilities to produce their well known brand name dairy based products in rural Indiana. As is commonly case with dairy wastewater, significant amount of proteins, sugars, oil and some suspended solids are present. Company installed membrane bioreactor (MBR) System to treat such wastewater for possible reuse. The MBR performed poorly ...

  • Case study: pretreatment of challenging pork rinds manufacturing wastewater

    Abstract Problem: Gaytan Foods facilities in City of Industry (Los Angeles, CA) manufacture pickled pork rinds, pickled pig feet and “cheese” puffs. The resulting wastewater is loaded with FOG’s, proteins and salts. Wastewater varies hourly and daily. Drastic changes in amount and type of contaminants occur (two orders of magnitude). During some hours ...

  • Novel pretreatment enables performance of MBR installed to treat oily wastewater

    Abstract Two new integrated systems processes, gas-energy-mixing (GEM) flotation – electrochemical catalytic oxidation (ECO) – membrane bioreactor (MBR) and ultra-filtration (UF) – ECO – MBR, were tested in industrial-scale pilots of 200L/h to 3000L/h for the treatment and reuse of steel mill cold-rolling emulsion wastewater. The operation parameters and mechanisms of ...

  • 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

  • Treatment of tannery wastewater for reuse by physico-chemical processes and a membrane bioreactor

    Treatment of wastewater from a tannery in Greater Ho Chi Minh City (Vietnam) was investigated on a pilot scale. After pre-treatment by the tannery that included batch-coagulation and sedimentation, the wastewater was treated by dissolved air flotation, a membrane bioreactor (MBR) and granular activated carbon (GAC) for polishing the MBR effluent. The average removal efficiency for organic ...


    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

  • 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.

  • 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

  • Reuse of California brine olive oil processing wastewater to meet zero discharge goal

    Abstract Reuse of low strength municipal wastewater is becoming quite common and many technologies are available for that purpose. However, treatment and reuse/recycling of high strength industrial wastewater is still a challenge. In this paper we present some case studies with implemented integrated systems to achieve zero discharge goal. We will concentrate on the description ...

  • Nalco - GEM Technology successfully implemented at food processor - Case Study

    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, ...


Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you