An integrated in-situ
denitrification culture
wastewater biological treatment device and treatment method relate to a
sewage treatment device and treatment method. The invention aims to provide a treatment device and treatment method with low
sludge yield, no refluxing process and good
ammonia nitrogen treatment effect. The treatment device comprises a
pool body, wherein the inside of the
pool body is divided into an anaerobic carbon-removing area, an aerobic
nitrification and
precipitation area and an anoxic
denitrification area through a plurality of partition plates; the aerobic
nitrification and
precipitation area comprises an aerobic
aeration chamber, a
precipitation chamber and the forth falling compartment; the anaerobic carbon-removing area is communicated with the upper part of the forth falling compartment, the bottom of the forth falling compartment is communicated with the bottom of the aerobic
aeration chamber; the bottom of the aerobic
aeration chamber is provided with an aeration device, the bottom of the aerobic aeration chamber is communicated with the bottom of the precipitation chamber; one side close to the precipitation chamber, of the middle part of the aerobic aeration chamber is provided with a
stream-separating plate longitudinally; the
stream-separating plate is used to form a
stream-separating channel between the aerobic aeration chamber and the precipitation chamber; and the upper end of the stream-separating channel is communicated with the aerobic aeration chamber, and the lower end is communicated with the precipitation chamber.