Soil Management in Organic Farming
April 13, 2017
Farming in Industrial Environment
April 13, 2017

Wastewater for Farming

Wastewater is the most reliable ‘all-time-available’ source of water today. Despite scarcity, we somehow get water and consume it for all domestic chores. So, every family generates a sizable quantity if wastewater which is ultimately wasted.

In an urban environment, invariably, in every city, we have atleast one river carrying sewage. Flow in such rivers is constant even during summer which is allowed to mix with the sea or some other water body and goes waste.

This water can be treated to carry out farming in urban environment. Sewage is normally rich in carbonaceous organic matter, nitrogen and phosphorus and contains substantial micronutrients which are required by plants. The carbon:nitrogen ration also suits the plant requirement. With such bountiful source of liquid resource, it is SIN to treat it in a sewage treatment plant and let it out. Sewage treatment is aimed at removing these nutrients and huge cost and makes it unsuitable for further usage. Unless the treatment is done to recover water for further domestic use, such mediocre treatment for further discharge is waste of national resource.

Space is not a constraint in urban environment since the river itself can be used for the same.

With minimal treatment, keeping all necessary nutrients intact, removing pathogenic bacteria in sewage, it can be used on ‘Floating Beds’ on river for cultivating flowers, fodder, greens and even vegetables.

The team at MRITSNA Farm School has successfully demonstrated this technique and has even recommended a plan for infamous ‘Cooum river’ in Chennai.

If you are interested to know more, or put up a facility to convert sewage treatment for irrigation, write to us at

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