Waste Water Treatment in India

On October 5, 2011, in Water Treatment, by Jitendra

Waste water treatment is a growing concern for most civic authorities in most countries. Waste water which is generated either from household wastes or industrial or medical wastes need to be treated to avoid pollutant effect on the environment. Again, waste water treatment helps to ensure reuse of water for various purposes.

Waste water treatment is the process by which domestic or sewage water is treated in such a way that it removes major contaminants from the water which is collected from household sewage and other forms of runoff. Physical, biological and chemical processes are involved to remove containments from water. The objective of waste water treatment is to make the waste water safe for the environment before it is sent out in the open. The effluent water is then treated and can be used in farming. Advanced technologies are available nowadays to even reuse sewage water for drinking purposes.

Waste Water Treatment in India Today waste water treatment in India is being looked at from different angles. Intense efforts are being made to treat the domestic sewage waters and effluents which are being generated to make them suitable to be discharged into the natural waters of the environment. Biological treatment is one such method whereby the bacteria are used to oxidize organic matter into carbon dioxide, water, nitrogen and other chemicals. The sewage water is often treated with activates sludge or filter methods through which the effluents are trickled through. Water stabilization ponds, aerated lagoons and other forms of anaerobic treatments are also used.

The Upflow Anaerobic Sludge Blanket is the latest process in waste water treatment in India. The traditional methods of waste waster recycling included using sewage water for agriculture, aquaculture and horticulture. One instance of waste water being recycled is the bheris in Calcutta which are fed by recycled waste water. Aquaculture is being proposed in different parts of India so that not only is the waste water made suitable for natural discharge but can also be put to different uses such as aquaculture, in fisheries, in farming and so forth.

Today there are high amount of pollutants in the wastes waters and these need to be effectively treated before they can be safely used for such processes. There are many waste water treatment plants which are coming up in and around the major cities and even small towns in India and are being run by private companies with several incentives from the local governments.

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