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Sanitary Drainage System the bane of Bangalore Lakes
Written By psaram42 - 21 June, 2009
Bangalore lakes Pollution Action sewerage drainage system Bellandur Lake
The Sanitary Drainage System in a Mega city like Bombay, and our own Bangalore for an instance, is a source of persistent annoyance leading to exasperation. The Drainage system of the city of Bangalore has become a curse, plague and even a scourge or woe.
“A sanitary drainage system is a system of piping within public or private premises that conveys sewage or other liquid waste to an approved point of disposal. The intent is to design and install sanitary drainage systems that will function reliably, are neither undersized nor oversized, and are constructed from materials, fittings and connections whose quality is regulated by codes and standards. The basics of sanitary drainage systems include, but are not limited to, the following: public and private sewage disposal; selection of materials; installation of the building sewer, including the building drainage system and components; joining methods between drainage piping and fittings; drainage fixture units for sizing the drainage system; and sumps and ejectors.”
The above is from “Back to basics” series in the journal of PM Engineer. Click here to have a look. I am sure that BBMP has done a good job about the Sanitary Drainage System of the city of Bangalore. However the problem lies in the phenomenal growth of the cities in our country in general and Bangalore in Particular. We are not able to cope up with this “Development and Progress”.
This is the primary reason for pollution of the Lakes in the city of Bangalore.
The sewage that has to travel in the sanitary drainage system of the city, finds its way to the storm water drainage system, due to sewage water exceeding the design values. Hence we see that the Storm water Drain inlets of the lakes delivering Sewage water to these lakes. The basic issue thus is the Sewage Water Drains spilling over into storm water drains.
The lakes like Bellandur and the “Lake view residences like Sobha Dhalia” and others living in villages around Bellandur Lake, are the victims.
COMMENTS
finds its way to the storm water drainage system, due to sewage water exceeding the design values
I disagree, I believe they have been conviniently redirected to end in the storm water drainage system. I wouldnt expect them to admit as much in magazines.
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Instances of sewage water flowing into storm water drain
psaram42 - 21 June, 2009 - 07:59
The reference is to Indiranagar Storm Water Drain which is one of the SWD discharging untreated water in to Bellandur Lake.
- Infiltrated Sewage water in Indiranagar SWD
- A View of the picture-1 showing the location in the full covedred SWD
- The Opposite side of the above 2 pictures
- Storm Water Drain Indiranagar Miranda School Jeevan Bima Nagar Road
- Same as above View - 2
- Same View - 3
Please see the amount of the infiltrating water, which is not supposed to be there. Whether unauthorized or by design adequacy of the sewage water drain. According to my investigation it is a lacuna in the BBMP administration in not providing adequate sewage water drain capacity in certain ward areas. The particular instance under study happens because of dense growth of non standard residential areas of the city. This requires genuinely serious attention by the commissioner BBMP. Can he take us in to confidence?
psaram42 - 23 June, 2009 - 03:50
Dear Mr. RK Chari
The basic thread is about the threat posed by Sewage Water finding its way in to the Storm water drains and subsequently into the lakes. As a result the present storm water drains which are not supposed to carry sewage are polluting the lakes. The fact that the storm water drains are connected to the lake is not in itself the culprit.
Your point about absorbing the rain water in to the ground water table is well taken. However this point is besides the thread topic.
PSA
Mr Chari - you couldnt have been more correct
Rithesh - 23 June, 2009 - 06:52
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