How Waste Water Treatment Facilities Work
Here is a short breakdown of the waste water treatment process
Have you ever wondered where the water goes after it goes down the drain or after you flush the toilet? Well, the generic answer is the ocean. But simply dumping liquid sewage into the ocean leads to massive environmental damage and can be hazardous to people. UN-purified water can lead to drastic chemical changes in the water, killing entire ecosystems. When ingested by people, UN-purified water can lead to potentially life-threatening ailments. In order to deal with this, waste water treatment facilities are put up to clean up septic liquid.
These waste water treatment facilities work!
Physical treatment makes use of coarse screening and sedimentation in order to remove larger objects contained in the water. This is in addition to Wastewater Treatment Chemicals. Gravity plays a major role in physical waste water treatment as heavy solids tend to settle after the water is kept still in a container. At the same time, grease and oil will tend to float topside for easy removal. Waste is also filtered through a medium in order to remove particles that do not float to the top or settle at the bottom of the water. Physical treatment is usually employed during the beginning and at the end of treatment processes by a qualified Waste water Operator.
Here is a picture of a commercial Waste water Treatment System
Chemical treatment facilities on the other hand utilize agents that prompt chemical reactions that aid in the water’s purification. Reactions that cause an increase of oxygen are commonly used to kill bacteria found in the water. A common oxidizing chemical used for this purpose is chlorine which is also one of the primary cleaning agents used in swimming pools. Another common chemical reaction used in waste water treatment is coagulation. It involves the addition of certain agents into the water which creates an insoluble end product that aids in the removal of unwanted substances and microorganisms in the water. Common chemicals added to achieve this effect are aluminum sulfate and certain iron based compounds. Activated carbon is also used to purify water via this method.
Lastly, biological waste water treatment makes use of bacteria and other microorganisms to achieve better water quality. As strange as it sounds, microbes can actually be used to purify waste water. They assist by prompting the biochemical decomposition of contaminated water, making it cleaner. Portions of the water are turned into sludge and carbon dioxide through this process. Biological treatment can be classified as either aerobic or anaerobic.
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Both aerobic and anaerobic biological waste water treatment can make use of biomass films that digest impurities in the waste water. At times, bacteria suspended in the water is also used to achieve a similar effect. The difference between aerobic and anaerobic hinge primarily on the level of dissolved oxygen in the water.
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These are but a few of the many means by which waste water is purified. While there are existing means to clean up water, this doesn’t give people the license to just continually pollute the ocean. Globally, the production of waste water vastly outstrips waste water treatment capacity. It is important to exert extra effort to keep the oceans clean and free of raw efluent and ensure that laws and regulations are abided by when dealing with waste water treatment.