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Sewage treatment: Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safer treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to undergo further treatment before being suitable for disposal or land application. Sewage is generated by residential, institutional, commercial and industrial establishments. It includes household waste liquid from toilets, baths, showers, kitchens, and sinks draining into sewers. In many areas, sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into greywater and blackwater are becoming more common in the developed world, with treated greywater being permitted to be used for watering plants or recycled for flushing toilets. Sewage may include stormwater runoff or urban runoff. Sewerage systems capable of handling stormwater are known as combined sewer systems.Sewage collection and treatment is typically subject to local, state and federal regulations and standards. Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment. With suitable technology, it is possible to re-use sewage effluent for drinking water, although this is usually only done in places with limited water supplies, such as Windhoek and Singapore. In arid countries, treated wastewater is often used in agriculture. For example in Israel, about 50 percent of agricultural water use (total use was 1 billion cubic metres in 2008) is provided through reclaimed sewer water. Future plans call for increased use of treated sewer water as well as more desalination plants as part of water supply and sanitation in Israel. Constructed wetlands fed by wastewater provide both treatment and habitats for flora and fauna. Another example for reuse combined with treatment of sewage are the East Kolkata Wetlands in India. These wetlands are used to treat Kolkata's sewage, and the nutrients contained in the wastewater sustain fish farms and agriculture.
Ultrafiltration Plant is used in both pretreatment and post treatment of water. At Bionics Advanced Filtration Systems, we manufacture and install custom made ultrafiltration Water systems (UF Systems) up to 100m3/hr, units can be semi or fully programmable and PLC controlled. These are extensively used in industrial water and wastewater treatment applications. These units are next generation equipment, designed to minimize investment cost and maximize performance meeting stringent environmental protection requirements. Using DOW™ hollow-fiber Ultrafiltration Membranes, we can engineer ultrafiltration package system, ultrafiltration pilot plant and turnkey Ultrafiltration plant for Low (< 5 NTU), Medium (< 20 NTU) and High (< 50 NTU) turbidities. Our standard series of Ultrafiltration systems are modular units fixed on a skid frame (Powder coated MS or SS) fitted with inlet and outlet and product water connections. There are various optional components are available on request that can added as per clients' requirements. Ultrafiltration System Applications Packaged drinking water Surface water filtration RO feed water Waste water recycle Latex paint wastewater treatment Oil removal / Oil refining process Petrochemical waste water treatment Dialysis machine Municipal water Effluent recycle
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