Wastewater Reuse and Recycling

Image courtesy: www.projectsmonitor.com

Under the Water (Prevention and Control of Pollution) Act, 1974, every industry has to provide adequate treatment of its effluents before disposal, irrespective of whether it is in stream, land, sewerage system of sea. The small scale industrial units (SSI), which are presently defined as units whose plant and machinery are valued at less than Rs. 5 crore occupy an important place in the country's economy. The SSIs are a major contributor to the total industrial pollution load of the country. However, only a small fraction of the effluent discharge from these units is estimated to be treated as on date.

This paper by Ajit Seshadri, Vigyan Vijay Foundation highlights the poor sanitation situation in India and argues that centralized approaches to wastewater treatment have had limited success and there is a need to make wastwater treatment people centric and effective through the use of decentralized systems such as DEWATS (Decentralized Wastewater Treatment Systems). DEWATS are locally organized and people driven systems that typically comprise a settler, anaerobic baffled tanks, filter beds of gravel and sand, and an open pond. The open pond or the polishing tank recreates a living environment for the wastewater to clean itself, naturally.

Content courtesy: India WASH Forum

This report is a part of a series of papers that analysed the baseline data from all countries where the program was implemented.

Water interventions in the society

The society is an AIDS care hospice of about 5 acres, on the outskirts of Bangalore.

 the small ponds, the lakes, the rivers flows into backwaters, the sea, and the wells catching the abundant rain water enabling such vegetation and greenery all around……

Water – also the factor, which brings the biggest of problems to urban life –

• mosquitoes,
• bad stench from clogged dirty canals,
• floods and water logging especially in the monsoons,
• roads breaking up because of poor drainage,
• drinking water scarcity in many parts of the city,
• water borne diseases and health problems

This document describes the Goa Sewerage System and Sanitation Services Management Act and includes:

 In the process of distillation vapors passing through the condenser tube are cooled and condensed by water flowing through condenser tube in the condenser unit of the apparatus. In almost all laboratories the water used for cooling the condenser tube is coming from the water supply tap near the wash basin. The precious water after circulating through the condenser tube is left into the drain as wastewater. It has been observed that about 40 liters of water is required for cooling for making 500 ml of distilled water. The water after cooling is generally left to go into the drain.

The following video has been prepared by me and is released by youtube. The video gives good information for those who want to learn about the traditional method of glass distillation and the modified Recycling Distillation Technique (Sharma, 2004) that saves gallons of water.

The promoters have a combined industrial experience of more than 50 years in construction, water & wastewater treatment in fertilizer, power, electronics, steel, textile, chemicals, dyestuff & bulk drugs. The company provides total solution for complex water & wastewater problems and has created a niche for itself.

 Even if an apartment uses as less as 5000 litres of water a day it must have a wastewater recycling system which does such a thorough job that the treated wastewater is reused to replace fresh water and not for simply disposing off into the environment in a safe way. It is simply not good enough for treated wastewater to be used for watering lawns, an unnecessary demand.