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Wastewater Treatment Process Sewage treatment is basically the process involved when wastewater from households is treated by removing any contaminants in it. This process usually involves biological, chemical as well as physical processes in order to get rid of contaminants and attain wastewater that is treated and safe for the environment. Sludge is the term for the semi-solid waste that is sewage before it has been treated. This sludge usually goes through various treatment stages before it is suitable for land application or disposal. Wastewater treatment is also another term that is used to refer to sewage treatment. Sewage that is found in sewers is usually produced by industrial, institutional, residential as well as commercial establishments. Dirty water from sinks, kitchens, showers, bathrooms and other places constitute sewage which flows into the sewers. Sewage from the sewers is carried into the treatment plant using large pipes put in place. During treatment of sewage, there are a variety of stages involved since it’s a process. The first stage is known as screening where large contaminants such as face wipes, diapers, sanitary, bottles, rags and other wastes are removed. Removal of these contaminants is usually done in the first stage in order to prevent blockage or damage of equipment used in the treatment plant. The grit that is washed into the sewer is gotten rid of by using special equipment. Separation of wastewater from organic solid matter is usually the second stage of sewage treatment. There are huge settlement tanks where the sewage is passed through in order to get rid of human waste. The solid wastes are thus able to sink to the bottom of the settlement tank and are referred to as sludge. In the treatment plant, there are large scrappers used to scrape away the solid waste settled at the bottom of the tanks and is pushed to another compartment where further treatment is carried out. There are aeration lanes in these treatment plants whereby wastewater is put once sludge has been scrapped off. Any bacteria present in the water is used to break down small bits of sludge that might have gone through during the scrapping stage.
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The final treatment stage involves wastewater being driven into a settlement tank. The small bits of sludge in the mixture settles at the bottom once the bacteria acts on the wastewater. This helps to get rid of any chemical substances or armful things in the water. The wastewater is then allowed to pass through a wall where it is filtered using a bed of sand in order to get rid of any additional particles.
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By treating sewage, the water becomes fit to be released into the environment without any toxins or contaminants. People can even get to reuse water in performing household chores.