Solutions Exchange recently compiled its discussion on "Use of Human Excreta for Agriculture" , closely related to the concept of Eco-Sanitation. There were several participants in the discussion and the summary is now a rich source of resources about Eco-San and related topics: http://www.solutionexchange-un.net.in/food/cr/cr-se-food-wes-11090701.htm
Other resources include a previous discussion on Eco-San on Solutions Exchange: http://www.solutionexchange-un.net.in/environment/cr-public/cr-se-wes-05060701-public.pdf
WES-Net's resource base: www.wesnetindia.org
The sanitation playlist of India Water Portal on YouTube has several short films on eco-sanitation, Ecosan on Youtube!
Output from the Regional Ecological Sanitation Workshop, held on 15-17 February 2008, at Bangalore and organised by CAP Net South Asia can be had here https://www.indiawaterportal.org/data/conf/cap.html