Treatment and Purification

This manual by the Pan American Center for Sanitary Engineering and Environmental Sciences (CEPIS/PAHO), under the aegis of the World Health Organisation (WHO), provides extensive information on various m

Some new technologies and approaches for improving health through clean water - the work of the Aquaya Institute.
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This paper published in the Economic and Political Weekly describes the case of river Khari in Gujarat, which faced increasing amount of pollution due to the discharge of industrial effluents in the river and the efforts made  to solve the pollution problem.

The phenomenon of pollution started in the 1970s when Naroda, Odhav, Vatva and Narol on the eastern periphery of Ahmedabad city were promoted by the government. While there were zones for industries according to the type of waste generated, environmental considerations were overlooked and no provision was made for the safe disposal of industrial effluents. Most of the factories in the industrial estates were water intensive and all of them discharged effluents into the nearby Kharicut canal, which flows into the Khari river, a tributary of the Sabarmati. As the canal remained dry throughout the year, the government ignored its (mis)use.

The objectives of the case study by TIDE supported by Arghyam on the Tirupur textile industry cluster included:

Basic and advanced tutorial on wastewater management by Shiv Shankar Ranganathan

This presentation provides an introduction to the book by the Centre for Science and Environment(CSE) titled Sewage Canal: How to Clean the Yamuna”. As per the presentation, several crore rupees have been sunk into plans to clean up the Yamuna.

Root Zone Treatment System are planted filter-beds consisting of sand/gravel/soil. The system uses a natural way to effectively treat domestic & industrial effluents. 

This handbook on root zone technology for the treatment of industrial and domestic waste water is divided into following sections:

Executive summary

The initiative aims at:

A low-cost wastewater treatment system consisting of an anaerobic, deep pond, which uses a digestion chamber for degrading various types of sewage sludge and the solids from the influent wastewater stream.
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