Chandigarh

RESEARCH IN TERTIARY TREATED SEWAGE WATER SAYS TREATED WATER UNACCEPTABLE FOR PUBLIC AT LARGE

August 01, 2017 07:18 PM

Chandigarh  (Face2News)

Dr. Naveen Gupta, Department of Microbiology, Panjab University, Chandigarh carried out a research project in Tertiary Treated sewage water being regularly used in Chandigarh for irrigation. One of the major problems reported in the use of treated water is the presence of bad odour in it which makes it unacceptable for public at large.

Samples were analyzed from various outlets. The major reason of the bad odour was found to be the presence of H2S gas which is formed due to action of Sulphur reducing bacteria under anaerobic conditions when treated water gets stored in supply pipelines, tanks etc. 

It was found that foul smell in treated water can be controlled by using simple and inexpensive measures such as aeration and addition of various chlorinated agents. Chlorination with bleach (sodium hypochlorite) or gaseous chlorine was found to be most effective and feasible methods for the removal of bad odour. 

It was also found that sodium hypochlorite will not have any negative effect on the growth of grass/plants as at required dosage salinity of treated water is within the permissible limits. The project was done in collaboration with Department of Science and Technology and Renewable Energy, UT-Chandigarh. The findings of the project will be highly useful for the public at large.

 

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