The application provides a
wetland purification
system for a
tail water outlet into a lake of a
water quality purification
plant, a dam is arranged at the
tail water outlet into the lake and a distance away from the
tail water outlet to form an artificial lake, the lake
bank of the artificial lake can keep the original
ditch entrance and rainwater entrance of the lake, and a water outlet is arranged on the dam to be communicated with the lake; an ecological purification zone and a
wetland conservation zone are sequentially arranged from the lake
bank to the lake center at the artificial lake, a pre-
buffer zone is arranged between the tail water outlet and the ecological purification zone and between the
ditch and the ecological purification zone, and the tail water outlet is located at a side of the artificial lake away from the dam. Through the construction of the artificial lake and the
wetland purification
system, the content of pollutants in the tail water discharged into the lake can be effectively reduced, and the
water quality of the lake can reach the V-class standard. Specifically, the
water quality parameters after purification are as follows: the COD is less than 40 mg / L, the
ammonia nitrogen is less than 2 mg / L, and the
total phosphorus is less than 0.2 mg / L.