Costs of effluent treatment and RO treatment for different industries

I am a Prof in Economics at Osmania University Hyderabad, working on waste water treatment by industries.
I would like to know the cost of ETP treatment (primary, secondary and tertiary) and cost of RO treatment for different industries - if possible the cost of capital as well as operational cost. I realise that the costs will differ as per the type of industry and type of product, so if the data is given for Kl/d also, it will be useful in my research.
Also the cost of solar evaporation ponds (if possible per KL/d).


Thanking you,
Sincerely, Prabha Panth

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