A small resort of 40 rooms was having a hard time disposing their sewage from toilets, laundry and Kitchen.
The existing system to dispose sewage consisted of two septic tanks. In one of it, all the room toilets were collected. In the second case, the kitchen waste was connected.
The over flow from the septic tank was let out in the neighboring fields. The water created a smell and pollution nuisance. The trees and grass in the neighboring plots were affected.
Smaart Water understood the existing issues through a site visit. SW estimated the size of the existing septic tanks, the discharge volume and got a water sample tested to check for the contaminants. It subsequently estimated the size of the Phytoremediation Bed and showed a place to the client on the property where it can be kept and become a part of the landscape.
The performance of the system is summarized
The phytoremediation Bed shows a dramatic reduction in Nitrate, COD and BOD. E.coli bacteria are absent. The color and odor profile has substantially improved.
The pH is well buffered TDS has also
The phyto plants were thriving dramatically
The poor condition, inadequate septic tank design and no cleaning of accumulated oil were the key issue at the client end. SW advised the client to address the issues for a further better performance. The poor condition lead to leaks and contamination of ground water. The inadequate design resulted in oil slippage in to the phyto bed resulting in a bit of foaming and occasionally a bit of smell due to generation of sulphate reducing bacteria. The slippage of oil also happened because the septic tank was hardly cleaned for the accumulated oil & grease.
Smaart Water helped its client install an energy efficient, all-natural sewage treatment system to treat hotel waste water comprising of Laundry, Toilet and Kitchen waste. The treated water met the CPCB (Central Pollution Control Board) standard for category D water.
Growth of Phyto Plants
Cause of Smell and Foam formation
Through technical discussions with Dr Tuhin Banerjee at NEERI, we have come to the conclusions
Solutions for Smell and Foam
For short term solutions,
TCCA 90% Tablet.
Spray mineral oil or rubbing alcohol (from chemist shop) on top of the foam using a spray bottle.
Total Volume 8000 lit
If you need a detailed sketch, please ask us.
Available at Amazon
Hang two tablets in dispenser in the collection tank. Near the falling water stream.
The tablet has limited solubility so it will last.