This is the STP installation site in Dhaka,Bangladesh.That's for office building domestic sewage treatment. STP we produced is used for all kinds of waste water treatment,especially for domestic waste water.Domestic water comes from the bath room,toilet room,washing water etc,generally speaking,COD of raw water is about 400-500,we can design the process and reduce it based on customers' requirement.It can be buried underground ,customers can plant trees on the surface,no need heating and save much space.