Arsiron Nilogon is a simple but at the same time one of the most efficient and low-cost method for removal of arsenic from contaminated water suitable for poor rural application. It can remove arsenic from as high as 1000 ppb to less than 2 ppb or to undetectable level.

The method can remove both arsenic and iron simultaneously, hence the name - Arsiron Nilogon, where, ‘Arsiron’ stands for ‘Arsenic and iron, and ‘Nilogon’ means removal.

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Arsiron Nilogon is one of seven successful methods developed under initiatives of the DST, New Delhi which have been included in Arsenic Compendium published by the DST (http://dst.gov.in/Arsenic Compendium.pdf) and also put forward by the Parliamentary Committee for Estimates to the 12th Lok Sabha in Dec., 2015 (http://wrmin.nic.inwritereaddata/16 Estimates on asenic.pdf).

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In Arsiron Nilogon, the water is treated with small quantities of three common and safe chemicals:

 

1. Cooking soda (also called baking soda but not baking powder, baking powder is different)

2. Potassium permanganate and

3. Ferric chloride

 

in a sequence to remove arsenic through oxidation-coagulation-adsorption at optimised pH in batch mode.

 

Arsiron Nilogon can be used for arsenic removal of any quantity of water, for example, in small household (20 litre) unit, large household and small community (200-1000 litre) unit or large community water supply schemes of up to lakhs of litres per day. A household unit requires only two bucketsor two plastic drums, one for chemical treatment and another as a sand-gravel filter. For large scale community, it requires aplastic or an RCC treatment chamber and a sand-gravel filter.