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The primary mechanism of biological waste recycling in the natural environment is performed by other organisms such as animals, insects, soil microorganisms, plants, and fungi, which consume all available nutrients in the waste, leaving behind fully decomposed solids that become part of topsoil, and pure drinking water that has been stripped of everything that can possibly be consumed and ...
While an effluent sewer can use gravity to move waste, the ability to move waste with a pressure system can be a big advantage in places where a gravity system is impractical. Compared to conventional sewer systems, effluent sewer systems can be installed at a shallow depth and do not require a minimum wastewater flow or slope to function. [1]
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Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.
A case study of a decentralized wastewater system at on-site level with treated effluent reuse was performed at the Botswana Technology Centre in Gaborone, Botswana. [22] It is an example of a decentralized wastewater system, which serves one institutional building, located in an area served by municipal sewerage.
Once the tank is full of effluent, high-temperature pressurised steam is passed through the cavity in the walls of jacketed vessel, raising its temperature of over 121 °C. Once all the effluent has been heated to at least 121 °C for at least 30 minutes, all biologically hazardous material within the kill tank will have been sterilised. [6]
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Effluent coming out from Imhoff tanks can be either discharged in the environment, sent to a centralized wastewater treatment facility, or sent to constructed wetlands for disinfection and nutrient removal. As a result of anaerobic digestion of settled sludge, methane, carbon dioxide, hydrogen and hydrogen sulphide are typically formed. [5]