Landfill leachate is difficult to degrade high concentration organic wastewater
so it is difficult to treat it. Based on the upgrading project design of a domestic waste landfill
the author introduces the design of leachate treatment process in detail from the source
water quality
water quantity
treatment process
single structure
operation effect and investment of leachate. The combined process of two-stage A/O(anoxic/aerobic)-MBR(membrane bioreactor)-NF(nanofiltration)/RO(reverse osmosis) is adopted in the project. The practical operation results show that the treatment effect of the process is good.The COD
Cr
of effluent is less than 100 mg/L and NH
3
-N is less than 25 mg/L
which can meet the requirements of the pollution control sta