Buried sewage treatment equipment 1 level A effluent with what process?

AO process is generally stabilized level B, SBR up to level 1 B, MBR can reach level A. Buried or AO is more mature and affordable, a small number of 200 tons of AO equipment + wetland can be up to level A. In Kunshan, there are several Liding's projects are buried sewage treatment equipment plus artificial wetland

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