The invention relates to the technical field of
sewage treatment, in particular to a dead pig chemical
wastewater treatment method, which uses a water collecting tank, a regulating tank, an anaerobictank, a
facultative tank, an aerobic tank, an MBR membrane tank, a DTRO
reverse osmosis membrane group and a multi-effect
evaporator, and comprises the following specific steps: S1,
wastewater collection: firstly, physically filtering
wastewater generated in the whole treatment process of pigs died of illness, then injecting the filtered wastewater into an oil-water separator for oil-water separation, and injecting the wastewater subjected to oil-water separation into a water collecting tank through a
sewage pump for collection; and S2, preliminary treatment: collecting the wastewater in S1 inthe water collecting tank; pumping the wastewater in the interior of the water collecting tank into the regulating tank through the
sewage pump to obtain neutral wastewater. Through the design, the difficult problem that a traditional biochemical method and A2O-MBR equipment are difficult to treat wastewater of pigs died of illness due to the characteristics of high
ammonia nitrogen and high saltis overcome, under the assistance of a DTRO
reverse osmosis process, the process is relatively simple, and the processed wastewater can reach the standards.