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.

With the technological advances of small plant performance and reliability, decentralized wastewater treatment plants have now become eminently feasible.

Employees of the Kolkata Metropolitan Development Authority (KMDA) have decided to oppose the proposal of the Kolkata Municipal Corporation (KMC) to take over a sewage treatment plant (STP) with vacant land and buildings in Baghajatin.

Pilot project to tackle shortages, future increase in water demand

The Delhi Jal Board (DJB) will soon start a pilot project to recycle wastewater, in a bid to tackle the growing shortage of water in the Capital, and the demand that is expected during the Commonwealth Games in 2010.

Greeshma Gopal Giri | ENS
Chennai,
AS sewage treatment plants (STPs) have become mandatory in large construction sites having no alternative sewerage network, residents in high-rise buildings on the outskirts of the city have raised concern over the operation and maintenance of the plants.

Court told Delhi water utility officers

THE Delhi High Court has sentenced a former chief executive officer of the Delhi Jal Board and two other officers to two weeks in jail for not repairing sewer lines in the capital and letting the sewage flow into the Yamuna without treatment.

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