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sewage treatment process Applications

  • Wind or solar powered sewage treatment plants

    Use natural air currents for aerobic sewage treatment via venting pipes. Alternatively, they can be solar powered using a very low energy 12 Volt fan. The FILTERPOD requires no electricity for the treatment process. They finally allow modern, high quality sewage treatment for all regions of the world, even for off-grid locations.

    By Water Technology Engineering Ltd. (WTE) based in Bolton, UNITED KINGDOM.

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    Actuators for the water & sewage industry

    Water treatment and distribution offers significant opportunities for Rotork. With climate change affecting the availability of water in many areas of the world, there is an increasing need for processes which will maximise existing resources such as desalination plants and water re-use projects.

    By Rotork based in Bath, UNITED KINGDOM.

  • Landfill Leachate Treatment

    Effluents from waste (leachate) are highly polluted and must be treated efficiently before they can be discharged into a municipal sewage plant or a local watercourse. Conventional treatment technologies do not suffice. Chemical processes are not economic due to the high pH buffer capacity of the leachate. Hardness and chlorides in the leachate are a problem for many plant components. Besides, process knowhow and operating experience are indispensable for an effective elimination of the harmful ammonia nitrogen. Certain processes also produce residues such as concentrates, which must be removed from the landfill body. This disposal is very expensive. WEHRLE is a reliable and experienced plant constructor for those applications. The first leachate treatment plants were built in 1991 and have been in constant operation ever since. This is not only proof of excellent technology but also for sustainable efficiency with stable, predictable, low operation costs.

    By WEHRLE Umwelt GmbH based in Emmendingen, GERMANY.

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    Wastewater treatment upgrades & extensions

    The time comes that a Sewage Treatment Facility Municipal or Industrial may require significant upgrading or even an extension. The upgrade usually concerns improvement process performance (removal rates) and efficiency as well as replacement of mechanical equipment. The plant expansion usually refers to an increase of the capacity or to the extension of treatment ability, ie adding Nutrient Removal.

    By DEVISE ENGINEERING S.A. based in Athens, GREECE.

  • Air control for wastewater treatment aeration

    Aeration Process Introduction: Waste Water Treatment removes impurities and contaminants from a com¬munity`s sewage utilizing a number of different processes and a variety of equipment. One of the processes is the use of surface aerated basins that use aerobic micro-organisms to remove 80 to 90% of organic matter in waste water. Oxygen concentration in the water basins is a critical factor to promote the optimum micro-organism growth rate needed to treat the water in the shortest amount of time. As a result, large compressors are used to force air through hundreds of air diffusion filters at the bottom of the aeration basins, providing a constant 24/7 supply of oxygen to the micro-organisms in the water.

    By Kurz Instruments, Inc. based in Monterey, CALIFORNIA (USA).

  • Sulfide Oxidation with Hydrogen Peroxide (H2O2)

    Sulfide Odor Control Sulfide is found throughout the environment as a result of both natural and industrial processes. Most sulfide found in nature was produced biologically (under anaerobic conditions) and occurs as free hydrogen sulfide (H2S) - characterized by its rotten egg odor. We are most likely to encounter biogenic H2S in sour groundwaters, swamps and marshes, natural gas deposits, and sewage collection/treatment systems. Manmade sources of H2S typically occur as a result of natural materials containing sulfur (e.g., coal, gas and oil) being refined into industrial products. For a variety of reasons - aesthetics (odor control), health (toxicity), ecological (oxygen depletion in receiving waters), and economic (corrosion of equipment and infrastructure) - sulfide laden wastewaters must be handled carefully and remediated before they can be released to the environment. Typical discharge limits for sulfide are < 1 mg/L. Sulfide Treatment Alternatives There are dozens of alternatives for treating sulfide laden waters, ranging from simple air stripping (for the low levels present in groundwaters) to elaborate sulfur recovery plants (used to treat several tons per day at refineries and coal burning power plants). There are processes based on biology (using compost filters, scrubbing media, or inhibition/disinfection), chemistry (oxidation, precipitation, absorption, and combination), and physics (adsorption, volatilization, and incineration). Each process occupies a niche which is often defined by the scale and continuity of treatment, whether the sulfide is in solution or is a gas, the concentration of sulfide involved, and the disposition of the sulfide containing medium. However, for reasons relating to convenience and flexibility, chemical oxidation (using hydrogen peroxide) continues to grow in its scope of application. Treatment with Hydrogen Peroxide While other peroxygens such as permonosulfuric (Caro’s) acid, peracetic acid, and persulfates will oxidize sulfide, their use for this application is overkill. Hydrogen peroxide (H2O2) is considerably simpler and more cost-effective. H2O2 may control sulfides in two ways, depending on the application: Prevention - by providing dissolved oxygen which inhibits the septic conditions which lead to biological sulfide formation; and Destruction - by oxidizing sulfide to elemental sulfur or sulfate ion.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

  • Applications and Air Pollutants Removed in Hazardous, Solid and Liquid Waste Treatment Operations

    Venturi scrubbers with FORCE FLUX Condensation technology and Wet Electrostatic Precipitators for industrial, municipal, sewage sludge and pathological waste incinerators to remove micron, submicron particulate, heavy metals and acid gases. Special quencher/scrubber systems for dioxin removal. HCL scrubbing from PVC plastic waste burning. Fine particulate, acid gases and NOx removal on munitions destruction. Cleanup of all pollutants from liquid waste incinerators and other high temperature destruction processes. Acid and particulate emissions from electronic board and metals recovery operations.

    By Bionomic Industries Inc. based in Mahwah, NEW JERSEY (USA).

  • Waste water plant

    Applications of 254nm amalgam UV lamp Municipal Sewage Water Treatment Urban Drinking Water Treatment Swimming Pool and Spa Water Treatment Ventilating duct and air-conditioning system Applications of 185nm amalgam Lamps with Ozone Kitchen Exhaust Cleaning Urban Drinking Water Treatment TOC Reducing Swimming Pool and Spa Water Treatment High Purity Process Water Disinfection

    By CREATOR UV&IR Lighting CO.,Ltd based in Guangzhou, CHINA.

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    Electrochemical solutions and water technologies for marine industry

    In the marine market, ocean-going vessels and fresh water or inner coastal boats require water treatment technologies to meet drinking water, process water and wastewater requirements. Offshore oil and gas operations and ocean-going vessels generate sewage that can contain contaminants which have a detrimental effect on water quality and the overall marine environment. As a result, marine sewage treatment systems are required to lessen the environmental impact. The MEPC.227(64) effluent standards, adopted by the International Maritime Organization’s Marine Environment Protection Committee, apply to all sewage treatment systems installed on board on or after January 1, 2016.

  • Real-time In-situ Effluent Monitoring

    The UviLux BOD Indicator enables in-situ, real-time, reporting of BOD within both natural water systems and water processing plants. The monitor detects fluorescent proteins that are inherent within sewage and slurry and provides an output in BOD equivalent units. The principle behind the measurement is the excitation of Tryptophan-like fluorescence within UV wavelength band, which has been shown to correlate with both BOD and bacterial contamination. With complete flexibility of deployment methodology, the UviLux BOD Indicator can be applied to both water supply and water recovery processing plants. For water supply processing, the UviLux BOD Indicator can be applied at the front end to the water intake to provide alarm of any contaminated water entering the plant. Applications within Waste Water Treatment Works can include monitoring of effluent levels at the final outflow point (into rivers and coastal areas) as well as the primary, secondary & tertiary stages, the data potentially feeding into energy saving systems to optimise process performances. The CTG UviLux BOD Indicator in-situ fluorometer can also be used within pipe and channel networks to test for incidences of black water and grey water cross-over.

    By Chelsea Technologies Group based in West Molesey, UNITED KINGDOM.

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