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How many cubic meters of septic tanks should be designed in the residential area where 500 people live?
In the residential area where 500 people live, you can choose a 50 cubic meter FRP septic tank!
Please refer to Atlas of Selection and Installation of FRP Septic Tank 9 1SBZ3(2007).
There are basically design institutes, which are formulated by Beijing Chaobai Environmental Protection Glass Factory and North China Standardization Office!