Relative cost per MLD for domestic waste water treatment: Contacts required

I am a faculty member in College of Engineering Pune. I would like to know the relative cost per MLD of treatment of Domestic wastewater with various options like ASP, Trickling Filter, stabilization ponds and any other new technologies?
Can I also have  suggestions of  any person or organization who has worked in this area?

Prof. Ravindra Thanedar
ravindrathanedar@yahoo.co.in

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