S Viswanath

Source separated anthropogenic liquid waste (Human urine) - A potential plant nutrient for banana cultivation

Dear All, The Water and Sanitation Channel on youtube- https://www.youtube.com/user/zenrainman- reached a landmark today with the number of videos uploaded reaching the 300 mark. This has been an initiative to document and highlight efforts ongoing in such fields as rainwater harvesting, eco-san, grey-water reuse, groundwater recharge , ecological flows in rivers and such allied issues. It has now hit a steady view rate of 400 a day and has overall been viewed nearly 200,000 times . It is the 20th most viewed ALL time channel from India in the Reporters section and the 20th most subscribed in the Reporters section ( with such other eminent channels ahead such as bodybuilding and punjabi cute boy :) ) The latest video uploaded is https://www.youtube.com/watch?v=qEwiG9tAacs&feature=channel_page on the Chalakudy river in Kerala and to understand the construct and imagination of a river in modern times. One of the most popular videos has been on the guppy fish and it has a young audience to thank that for https://www.youtube.com/watch?v=f7V76FcL2QQ&feature=channel_page The channel has been the first to highlight such technologies and efforts as

The advantage of aerobic rice explained. Arghyam (http://www.arghyam.org) supports this initiative through a student grant support. The project is lead by Prof. Shashidhar Reddy with a grant from the Rockefeller foundation. The student receives a small grant from the Krishi Vidya Nirantara to support his thesis work under Prof Shashidhar Reddy.

As ground water levels decline in India, Persian Wheels cannot reach the water to draw them out from open wells. One such Persian wheel stands forlorn and frustrated as the water table has dipped in Kolar, Karnataka India. This wheel has worked for the last 80 years and 2007 was the first time that the water table fell and the wheel could not work for the day.

A slow sand filter built with Japanese aid is running out of use because the community cannot repair the broken pump. Can we help organize the community to take charge of its asset?!

Subject: Ecosan

Duration: 1:20 mins

These trucks with a built in pump suck out septic tanks and pit latrines for a fee of Rs 1300/- ( 33 US $). They do the job cleanly and in 15 minutes. The waste is then deposited at a sewage treatment plant or for farmers to compost and use as fertilizer. A protocol for safe handling of the manure needs to be quickly developed as well as to tell farmers how much manure to use.

There is a spurt of gastro-enteritis in the city today. Residents think that it is the contaminated mains supply from the BWSSB that is the source of the gastroenteritis. The Bangalore water supply and Sewerage Board thinks it is water bought by residents from the private water tankers that is the cause but then seems to change its mind.

What exactly is a Persian wheel? Also known as Rahat (in Urdu), it's a simple water lifting device, where a number of small pots are attached to a long chain. Two gear wheels make up the system and as the first one is revolved, the pots each dip and swallow water from the well and soon after pours itself out to a metallic shaft which in turns empties into an intricate network of troughs that distributes water adequately through the cropped area. It is believed that the technology originated in Egypt and as world shrunk through extensive trading, it spread to India and China.

Two simple technologies for water purity: