Stp a good choice for ENVIRONMENT

Clean drinking water is significant for our survival. Underestimating its importance is sheer foolishness. Despite of all these facts the water gushing out of our home taps is now not at all safe for drinking without any purification measurement taken. More worrying fact is that this quality of water is deteriorating with each passing day. Even the bottled water which we purchase is not safe for drinking. It contains high concentration of pesticides. Even water samples have high content of some extremely dangerous pollutants like residual pesticide, heavy metals, organic matter.

Let me share another fear-provoking fact about the rivers of Asia. Asian rivers have three times as many bacteria from human waste as the global average giving them the distinction of world’s most polluted rivers. In fact the quantity of lead (Pb) was also found to be 20 times more than those of industrialised countries.

Main culprit behind this unarguably is Sewage which is chiefly household waste toilets, baths, showers, kitchens, and sinks draining into sewers. Off course by now word STP (Sewage Treatment Plant) to tackle this perilous situation must be striking your mind. It is often known as simply wastewater treatment. Certainly, it is the best choice to bring waste water in its pristine state. In STP’s natural process of decomposition is imitated in an artificial way to fasten the pace of waste decomposition. In year 1870, Sir Edward Frankland developed a method Chemical treatment method which is even quicker than natural process.

The process of sewage treatment involves various phases like Pre-treatment, Primary treatment, Secondary treatment and Territory treatment. In this blog, I will not go in to much depth about the details these processes. These three steps collectively remove nearly all contaminants from waste water. Primary treatment removes cans, rags, sticks, plastic packets, sand, grit, stones, broken glass, fat and grease. While in secondary treatment with support of MBBR (Moving Bed Biofilm Reactor) technology sewage containing biodegradable soluble organic contaminants (e.g. sugars, fats, organic short-chain carbon molecules, etc.) are removed. Tertiary treatment which is also known as “effluent polishing” makes treated water fit for release in water bodies like sea, river, lake, wet lands, ground, etc. Tertiary treatment also mitigates Nitrogen, Phosphorus and biological contaminates which otherwise can cause algal blooms or Eutrophication in water bodies.



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