aeration product Articles

  • Microsensor determination of multiple microbial processes in an oxygen-based membrane aerated biofilm

    Microsensor techniques were used to investigate in situ the simultaneous occurrence of sulfate reduction and nitrogen removal in a membrane aerated biofilm reactor. H2S, O2, pH, ORP, NH4+ and NO3− microsensors were fabricated and used to measure the profiles inside the membrane aerated biofilm. Production and ...


    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 ...

  • Increase biogas production, aeration basin efficiency with the right flow meter

    In our competitive economic climate, many plant operators have a mandate to tune their plant’s performance by efficiently using biogas in cogeneration processes and increasing aeration basin efficiency, both of which can save thousands of dollars in the critical secondary stages of wastewater treatment. In many cases, these facilities are retrofitting with new flow measurement ...


    By Sierra Instruments, Inc.

  • Quality of inputs is important for product performance

    Water scarcity and pollution are two issues of great concern in our country today and, with our ever-increasing pop-ulation, the problem is getting worse. The need of the hour is the on-site sewage treatment for re-use. We talk about procurement and related issues to Shahaveer Jamshedji, Managing Partner, Biowater Treatments Systems LLP. Range of products Biowater Treatment ...


    By BioMicrobics, Inc.

  • Outgassing During LPG Pumping

    Due to the partial gas handling capability of the Micro Bubble Generator, outgassing is reliably managed. This applies especially for the transport of liquid gas. Edon has been working hard since its inception to provide our customers with satisfactory service and qualified products. We are committed to providing long-term cooperation with our customers and ...

  • Feasibility tests for treating shampoo and hair colorant wastewaters using anaerobic processes

    Wastes from the personal care product (PCP) industry are often high in biodegradable carbon, which makes them amenable to aerobic biological treatment, although process costs are usually high due to aeration inefficiencies, high electricity demand and production of large amounts of sludge. As such, anaerobic treatment technologies are being considered to lower net energy costs by reducing air use ...


    By IWA Publishing

  • Cooling Water Treatment by Ozone

    The innovative conception of the Micro Air Bubble Generator did lead to participation at seventh frame programming of the EC for research and technological development. Marine bio-fouling is major problem for material in constant contact with seawater. Accumulation of marine organisms has impact on the proper functioning of engines and further appliances on board that ...

  • Product description of the DO2E aerator / mixer

    DO2E Aerator / Mixers are high-efficiency all welded, heavy-duty PVC devices that are unique in several ways. DO2E’s patented products are designed to pull water from significant depths for aeration and mixing.  By operating with low-pressure ( DO2E utilizes the latest “Green Technology” and continues to set the standards in the Aeration industry. DO2E’s products are ...

  • Spilled heavy grade heating oil case study

    Heavy fuel oil escaped from a storage tank and entered the drainage system of a large creamery. This material passed to the aerated balance tank which precedes an activated sludge system treating the factory waste waters. Alerted to the spillage the operators were able to shut off the flow to the activated sludge system but not before a significant quantity of oil had passed through. Bio-Systems ...


    By Bio Systems Europe

  • Cleansing Agent Treatment

    After the machining of mechanical parts as motor casings and gear boxes the parts are cleaned and oil residues accumulate. The cleansing agents transported in a closed circuit carry the oil residues and are cleaned subsequently in a flotation process. Edon has the advanced micro nano bubble ...

  • Cost minimization in a full-scale conventional wastewater treatment plant: associated costs of biological energy consumption versus sludge production

    Energy consumption and sludge production minimization represent rising challenges for wastewater treatment plants (WWTPs). The goal of this study is to investigate how energy is consumed throughout the whole plant and how operating conditions affect this energy demand. A WWTP based on the activated sludge process was selected as a case study. Simulations were performed using a pre-compiled ...


    By IWA Publishing

  • Nitrous oxide emissions from one-step partial nitritation/anammox processes

    Measurements of nitrous oxide were made at pilot- and full-scale plants to evaluate greenhouse gas emissions from one-step partial nitritation/anammox processes applied in moving bed biofilm reactors treating reject water. It was found that 0.51–1.29% and 0.35–1.33% of the total nitrogen loads in the pilot- and full-scale reactor, respectively, were emitted as nitrous oxide. Between 80 and 90% ...


    By IWA Publishing

  • Optimization of simultaneous biomass production and nutrient removal by mixotrophic Chlorella sp. using response surface methodology

    The bioprospecting of potentially mixotrophic microalgae in a constructed wetland was conducted. A locally isolated microalga, Chlorella sp., was grown to determine the effect of temperature, aeration rate, and cultivation time on simultaneous biomass production and nutrient removal from piggery wastewater using central composite design (CCD). The most important variable for the biomass ...


    By IWA Publishing

  • Port of antwerp oil spill soil remediation project case study

    THE PROBLEM In 1990, 4500 m3 of silty sand/soil contaminated with mineral oil (diesel) to a level of 1500 ppm was treated on-site (Port of Antwerp) at the request of the client. OUR APPROACH On reviewing both the site and the scope of the project it was clear to Nordevco staff that the most cost effective and efficient approach would be to treat the soil in a ...


    By Nordevco Associates Ltd.

  • Pulp and paper mill aerated lagoon phosphorus optimization

    The Domtar (formerly Weyerhaeuser) Kamloops, BC bleached Kraft pulp mill discharges treated process wastewater to the Thompson River. The River and downstream Kamloops Lake have historically been identified as nutrient sensitive, with phosphorus contributing to algal growth. The BC Ministry of the Environment required that the mill perform a phosphorus optimization study to minimize phosphorus ...

  • Ommegang Brewery, Cooperstown N.Y. - Case Study

    SYNOPSIS The Ommegang Brewery in Cooperstown, N.Y., unable to send its wastewater to the public treatment facility, built its own private 20,000 GPD industrial membrane bioreactor package plant. Planners wanted to make sure every element of the treatment process was designed to take advantage of the latest in technological advancements to deliver optimal treatment in the least time, with ...

  • Fighting Foam in Aeration Tanks

    Just like a poorly poured pint of beer can wreak havoc on your coffee table, excessive foam formation in aeration tanks can create operational challenges for both municipal and industrial treatment plant operators.  In municipal plants, foam formation is common during secondary treatment startup, as the young microbiology is unable to breakdown surfactants associated with soap, shampoo, ...


    By KLa Systems, Inc.

  • Effects of C/N ratio on nitrous oxide production from nitrification in a laboratory-scale biological aerated filter reactor

    Emission of nitrous oxide (N2O) during biological wastewater treatment is of growing concern. This paper reports findings of the effects of carbon/nitrogen (C/N) ratio on N2O production rates in a laboratory-scale biological aerated filter (BAF) reactor, focusing on the biofilm during nitrification. Polymerase chain reaction–denaturing gradient gel electrophoresis (PCR-DGGE) and ...


    By IWA Publishing

  • 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.

  • Sludge Minimization Technologies-Doing More to Get Less

    Sludge minimization technologies have been available for several decades; however recent developments have brought some sludge minimization technologies to the forefront. All of the technologies utilize one or more of three basic approaches to minimize the amount of waste activated sludge produced by an activated sludge process: cell lysis, cyclic oxic environments, and long solids retention ...

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