What are the Parameters to be considered in a Sewage Treatment Plant?
To combat the menace of growing pollution in our environment, some guidelines must be laid down to protect it. Whenever the sewage water is treated, the solid sludge can cause a lot of harm to human and environmental life. From time to time, the environment ministry has laid down specific guidelines for Sewage Treatment Plants to discharge water into rivers and various other streams.
Since the past, there has been a lack seen in the capacity to treat Sewage and not in the treatment of Sewage. There are four parameters to be considered for a Sewage Treatment Plant. These are as follows:
1. Ph Value
It is used to capture the level of acidity present in the water. The standards set for Ph Value are determined at the station between 6.5-8.5. These apply all over the country with no exceptions.
2. Biochemical Oxygen demand (BOD)
The standards set for Biochemical Oxygen Demand (BOD) have been determined to exceed 20 for the metro areas and state capitals except for Himachal Pradesh, Uttrakhand, Union Territory of Andaman and Nicobar Islands, Jammu & Kashmir, Dadra and Nagar Haveli and Daman and Diu and Lakshadweep. For the areas other than those mentioned above, standards are determined not to exceed 30.
3. Total Suspended Solids (TSS)
The standards set for the total suspended solids (TSS) is less than 50 for the metro areas and state capitals except for Himachal Pradesh, Uttrakhand, Union Territory of Andaman and Nicobar Islands, Jammu & Kashmir, Dadra and Nagar Haveli and Daman and Diu and Lakshadweep. For areas other than the mentioned, standards are set to less than 100.
4. Fecal Coliform (FC)
It is considered to be a bacteria of a dreaded strain of E. It is found in the intestine of warm-blooded animals. The standard has been set to less than 1000, which probably amounts to MPN/100ml for Sewage Treatment Plants across the country. These apply all over the country.
Also, the metro cities mentioned above are indicated as Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Pune, and Ahmedabad.
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