By Mr. P. Oppili
A cool breeze welcomes me at Kannan Pasupathiraj’s house
in Muttukkadu. We sit down in the garden. Just as I am about to sip my tea, I
hear the sound of water flowing beneath my feet.
Seeing my quizzical look, Mr. Pasupathiraj smiles
& tells me I am sitting on top of a
small waste water treatment plant. “Most people will immediately try to shut
their nose, expecting a foul smell,” he said.
Waste Water treated Environment - Friendly Technology..!
To my surprise, absolutely no stench comes from the
plant. Mr. Pasupathiraj says: “We are sitting on a septic tank where waste
water is treated using an environment - friendly German technology.”
He says the plant is designed on the tried & tested Sequencing Batch Reactor (SBR) method,
where 98% of purification is achieved in just 6 hours without any chemical
treatment. The waste water goes through a precise sequence of aeration,
sedimentation & clear water removal, using gravity to separate waste
particles of varying density. All 3 sequences happen in a single tank rather
than 3 tanks.
Aeration is the most important of the operations, and
creates a suitable environment for bacteria to digest the waste in water.
Two (2) separate chambers are used - one is where the
waste water is collected & the other
is the SBR tank where the water is transferred for the actual biological
process to happen.
Here, short cycles of aeration & rest happen alternatively, resulting in the
production of millions of micro - organisms that treat the water thoroughly.
The recycled water in Mr. Pasupathiraj’s home is used to
raise his garden of fruit-bearing trees &
other plants. For a family of up to 6 people, the size of the entire
plant with both tanks is about 3,600 litres, which is much smaller than the
septic tanks in many houses.
Klaro technology..!
For apartment blocks with up to 6 families ( about 35
people), the size of the plant required is neraly 22,000 litres. The power
consumed by the plant is about 8W per person, in other words, it’s roughly
equal to a family using one 40W bulb.
The price ranges from nearly Rs. 1 lakh for a small plant
that services a family of 6 to Rs. 65 lakh for a plant used for 1,000 people.
Called Klaro, the technology is apparently one of the few
that offers fully automated sewage treatment for single houses, apart from
being suitable for apartment and commercial complexes, colleges, hospitals
& resorts.
For more details.!
EcoTec Engineers and Consultants
Flat No:27, 3rd Floor, Montieth Mansion, Plot No:27,
Montieth Road,
Egmore, Chennai - 600 008 Tamilnadu, India
Land Line: +91 -
44 - 4263 9389
Email: info@ecotec.in
Web Site: www.ecotec.in
Cell: 098407 16526.
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