The Ecological Engineering Mode Design for the Purification of Miniature Landscape Lake

According to the requirement of water quality function of the miniature landscape lake, the ecological engineering mode has been used to search for the purification method of miniature landscape lake through rational design for size and density of filter feeders, plant-eating fish and aquatic higher plants. The predication results show that: The chub and bighead with the dosing density of 300 fix phosphorus 11.767 kg. The mussels with the dosing density of 0.15 fix phosphorus 1.731 kg. The phosphorus fixed by 70 grass carp and lotus is 0.192 kg and 1.5 kg. The removal of phosphorus is total 15.19 kg, which exceeds the annual phosphorus input of the lake. The prediction effect on ecological engineering mode design is ideal and it can be looked as an ideal method to purify miniature landscape lakes.