The Delhi Jal Board wants to cut down on its electricity bills, earn carbon credits, and all this by utilising bio-gas that is produced at its Okhla sewage treatment plant here in the Capital.

The Government is all set to fix responsibility for pollution of the Yamuna. In its first initiative, the Delhi Government is to bring a law in an effort to direct the polluting industries and establishments in the confines of Delhi to check pollution right in their backyards. They would be asked to install mini-Sewage Treatment Plants to check pollutants before draining them into the Yamuna.

Modern wastewater treatment systems require air in order to maintain biological activity. Often air is also needed to maintain a thoroughly mixed system. Any air introduced beyond what is needed for these two processes is considered excessive and may be eliminated to reduce power consumption.

Wastewater reclamation has become a viable alternative to supplement water supplies in water short areas. In particular, membrane treatment has played an important role in purifying the water cost effectively. Reverse osmosis (RO) membranes have been shown to significantly reduce total dissolved solids, heavy metals, organic pollutants, viruses, bacteria and other dissolved contaminants.

Ozone technology has been used for the past two decades or more. It is, however, only now that its use in wastewater treatment has been recognized. The location of ozone use in wastewater treatment determines the goal of treatment. At the same time, ozone finds use in each stage of wastewater treatment.

Modern wastewater treatment systems require air in order to maintain biological activity. Often air is also needed to maintain a thoroughly mixed system. Any air introduced beyond what is needed for these two processes is considered excessive and may be eliminated to reduce power consumption.

Environment ministry admits bacteria is major river pollutant MAJOR rivers in India have high bacterial contamination, the Union Ministry of Environment and Forests (moef) said in a press release dated December 24, 2008. Yamuna and Ganga top the list of most polluted rivers (see graph below). Bacterial contamination in water is indicated by the presence of coliform bacteria that find

Faced with an encroaching city, old world farmers created

Chittaranjan Tembhekar | TNN

Navi Mumbai: Three sewage treatment plants, constructed in Navi Mumbai with sophisticated Austrian technology, have started converting the entire city

Smaller local treatment plants in place of a large central facility allow for considerable economical advantages including the reduction of costly collection infrastructure as well as providing the opportunity for smaller incremental-as-needed expansion phasing.

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