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Sewage treatment technology to recharge groundwater near Villivakkam Lake
Posted on: 10/Sep/2019 9:43:47 AM
Recharging and maintaining of good groundwater levels throughout the year in the localities surrounding Villivakkam Lake could be possible soon. It is now revealed that a low cost sewage treatment technology might be playing a huge role in this above mentioned activities surrounding the Villivakkam Lake.
It is worthy to note that this new technology has been developed by BARC or Bhabha Atomic Research Centre as well as by the officials belonging to the corporation of Chennai. On Monday, the scientists of BARC conducted first round of inspection in the lake area. It is brought out the plan was to set up a pilot treatment plant of 5 MLD and let the treated water into the lake for percolation while also having water in the lake all through the year.
As per the BARC scientist, Mr. Daniel Chellappa, it is clear that the hybrid granular SBR or sequencing batch reactor process is a simple technology. In this, bio-heads made of natural microbes present in wastewater are used to absorb the contaminants. He added that it was their team’s latest sewage treatment technology and it has been patented. The advantages of this latest sewage treatment technology are it requires just 50% of the investment that was needed by the conventional treatment plant and less lands.
It must be noted that BARC scientist Mr. Daniel Chellappa on Monday morning was involved in inspecting the Villivakkam Lake and Mambalam Canal to identify locations to set up the plant to find out the source of sewage in the nearby localities.
The traditional sewage treatment plant needs membranes and tanks are known. The information is unlike the traditional sewage treatment plant this latest technology comprises bio-heads that could be dropped into the tank having waste water. In the next step within minutes, the bio-heads would absorb the contaminants like nitrogen and phosphorus etc in the waste water and turn them to granules. Finally, these granules settle down at the bottom of the tank.
It is superb to mention here that the resultant granules are rich source of carbon, nitrogen and phosphorus so they could be used as a fertilizer supplement. Point to be noted is the technology leaves reusable residue and the treatment process does not leave any smell unlike the conventional process. A secondary tank or a decanter would not be required for treatment and separation of treated water used in the traditional sewage treatment plants. This was confirmed by Mr. Daniel Chellappa.
He then shed light on how both biochemical oxygen demand as well as chemical oxygen demand could be controlled well. It was revealed by the Chennai Corporation official that 5 MLD capacity sewage treatment plant with BARC technology might be set up on a pilot basis and later upgraded to 30 MLD.
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