Water Pollution Technology By Zero Discharge
|What is zero discharge? |
Zero discharge means that no wastes are discharged, that everything is recycled and no pollutants are being discharged into the environment. Another term fro this is totally effluent free (tef)
Evolution of treated wastewater discharge standards is a complex process requiring thorough expertise. Zero discharge is one such standard / requirement of pollution control authorities.
Typical operating costs of zero discharge technology
1. R. o rs. 12 20 kl
2. Thermal evaporation rs. 150 500 kl
3. Incineration rs. 500 1800 kl
4. Solar evaporation rs. 1 5 kl
5. Primary &secondary tret. Rs. 3 20 kl
Typical design parameters for zero discharge
1. Wash water process water 3 5 KG KG
2. Waste water raw water 60 80%
3. Water evaporated steam 0. 7 to 2. 6 KG KG
4. Treatment cost rs. 4 10 kl
5. Tds can handle 1, 000 to 1, 00, 000 mg lit.
There for, zero discharge is myth! ! !
In reality and over a long period, some discharges are bound to take place; unless there is an enormous storage capacity or it can be vaporized.
We picked up the word vaporized from above conclusion. It was also thought that in various technological innovations, by and large the pollutants are targeted for the treatment but here the approach is different and the main emphasis was given to the: water part: of the wastewater and not the pollutants. In short water was treated evaporated in the cost effective manner without any thermal means.
( only input into the system is electrical energy. There is no thermal input. )
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