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Smart Ideas: Treatments Revisited

Treatment of Sewage The act of removing contaminants in wastewater from households is known as sewage treatment. In a water treatment plan, biological, chemical and physical processes are used to remove contaminants found in the sewage for the water to be safe for the environment. Before treatment, sewage usually occurs in a slurry or a semi-solid state which is known as sludge. In order for sludge to be ready for land application or disposal, it has to go through several treatment stages. Another term used to refer to sewage treatment is wastewater treatment. Sewage is usually generated by commercial, residential, industrial as well as institutional establishments. Sewage usually includes dirty water from toilets, bathrooms, kitchens, sinks, showers among other household water which goes into the sewers. Once the wastewater goes into the sewers, it is carried by a large pipe into the treatment plant. During treatment of sewage, there are a variety of stages involved since it’s a process. Bottles, rags, face wipes, sanitary, diapers and other large contaminants are usually removed from the wastewater during the first stage known as screening. 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. Sometimes, grit might get washed into the sewer which is why special equipment is used in order to get rid of it. During the second stage, waste water is separated from the organic solid matter. There are huge settlement tanks where the sewage is passed through in order to get rid of human waste. In doing so, solid waste sinks to the bottom of the and is basically 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. The other water is put into tanks referred to as aeration lanes. 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 wastewater is then taken to a settlement tank during the final treatment stage. Once the bacteria acts on the small pieces of sludge, they settle down at the bottom of the tank. Once this happens, the water becomes free from any chemicals or other harmful substances. 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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Sewage treatment is very important as once the process is over, the water can then be released into the environment without any contaminants or toxins. Once the water is purified, people get to reuse it in their homes for domestic purposes without letting it go to waste.