Sunday , October 17 2021

Bio sand filters effective in correcting water impurities

Udaipur : People often complained of colic diseases, fever and vomiting due to consumption of water drawn from wells in villages around Sakroda, Kurabad and surrounding areas in Udaipur. Under a research project, water activists took up a task of setting bio sand filters in some of the homes at these places and since then, the health related issues have relatively reduced here. Encouraged by the results, Water Harvest, an UK based NGO is now planning to take up more homes in other blocks where bio sand filters would be set up to eliminate water impurities.

“Bio sand filter is a concrete structure with layers of sand and gravel inside that eliminate impurities as water passes through them . It is produced locally using materials that are readily available, inexpensive to create and no cost to operate. It is designed for intermittent use, has very low maintenance and highly effective at eliminating water impurities. The filter removes 98% of bacteria, fecal coliforum , 99% of parasites, protozoa and worms, 80-90% of viruses and all suspended sediments” Om Sharma, country director of the organization told Udaipur Kiran.

Some other organizations too have set up similar structures in other parts of the state, we aim to popularize the cost effective technique in interior tribal areas for the benefit of the under privileged section, Sharma added. Local craftsmen can make bio sand filters thus creating more livelihood opportunities. “ The filters are low technology and hence after training can be manufactured anywhere. The advantage of this filter is that it is low on cost as much as 3000 rs and it is very durable.

It needs relatively small space to be kept anywhere whether backyard or kitchen. It eliminates risk of waterborne diseases, its fabricated using local material and hence requires no replacement of parts. The filter has a high flow rate i.e up to 84 liters/day and water tastes quite good” Dr Deepti Sharma, CEO, Water Harvest said.

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