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Troubleshooting Domestic Sewage System: Tambaram, Chennai.

I have built a multi house building in an area where the public sewer pipes are not yet available. We built a large capacity sewage settlement tank (septic tank). The tank gets filled pretty quickly (though we have five families, the tank gets filled with in 3 months). We have several issues with our system.

(*) The tank base has been sealed with concrete; hence there is no water transfer - to me which is good as it does not seem to pollute the nearby ground or well systems.

(*) There seems to be signficant water flow along soil - not sure, do we have any mechanism to prevent the water reaching the tank.

(*) When heavy rain occurs, the flood from the street some how enters into the tank. (This was recently prevented as the pipe leaving the house was elevated).

(*) However, the real problem has been, the tank gets filled up pretty quickly. We are in the process of considering Soak Pit. or can we treat the water before it enters the tank and separate the water to the drain pipe?

In any case, what would be the best mechansim to handle such situation? It sounds like we have not really done a good job in engineering the sewer system in the first place. But what would we do to rectify this. My house is located just outside of "Chennai" - Tambram sub-urban area (Tamil Nadu, India).  Contact information of consultants  who can help us is welcome.

Minkaditam

minkaditam@yahoo.com

Thank you

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Comments

1.

Dear member,
Please feel free to browse through this site and answers given on domestic STP. All those info would be relevant to you. What is the flow kl per day, is it combined both sewage and others,Then in that case you may consider treating water to an extent of reuse for flusing in toilets,watering garden etc..
Auroville Pondicherry has STP-DEWATS-system you look up wbsite and seek details of one Mr.Tencey..,he would be able to give you a design,and help you make one. Our NGO is located in Delhi, and has dealt with WWT for reuse etc.,
Your problem can be solved easily with sustainable initiatives.

with wellwishes from VigyanVijay
Ajit Seshadri

ajit.seshadri@vigyanvijay.org
http://vigyanvijay.org/

Er. Ajit Seshadri,Head- Environment, The Vigyan Vijay Foundation

2.

Dear minkaditham,
*Generally the septic tank is a closed chameber with all sides of inner and outer fully plastered .
* please check the conditions of all walls !
*your septic tank capacity was not known?
*Have you constructed any soak pit and dispersion trenches leading to your buildings open spaces?
* did your system of sewers had connections other than the flush out toilets and any separation of grey water( sullage of bathroom wastes other than f o t and kit chen wastes) available ?
* the liquid wastes other than f o t to septic tank may pose serious vulnerable problems.
* g o i - cpheeo has given guidelines to septic tank design and specifications -refer.
*normally in indian housing sector builders, engineers and consumers are neglecting the advises from civil engineers , environmental engineers,and sanitary engineers viz., getting wrong advises /practices from unskilled masons ,never get fore thought /planning about the disposal waste water and the water supply requirement and power - electricity -connections getting twelvth hour achivements inviting several problems of water pollution etc.,
pls try to locate any senior sanitary engineers/civil engineers/environmental enginers near by location and get advise!
* if u wish pls contact me at meena2neer@yahoo.co.in/9444256597
meenakshi sundaram/chennai 83

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