论文部分内容阅读
The integrated restoration project in Lichee Lake in Shenzhen,China,is taken as a case study.The restoration project included a filtration unit,a bio - gravel aeration unit,an ozonation unit,and an artificial wetland unit.Based on one and half year field monitoring data,daily removal via filtration unit,bio- gravel aeration unit,and artificial wetland unit,respectively,on COD is 305 ± 159,173 ± 52,and 11 ± 3 kg/d; on ammonia is 4.6 ± 1.2,2.3 ± 1.2,and 0.04 ± 0.03 kg/d; on TP is 2187± 509,630 ± 129,and 43 ± 3 g/d; on TN is 135 ± 3906,216 ± 1194,and 79 ± 42 g/d.Daily removal via filtration unit,bio -gravel aeration unit,ozonation unit,and artificial wetland unit,respectively,on Chl a is 275 ± 171,120 ± 50,52 ± 31,and 25± 2 g/d; on turbidity is (34 ± 21 ) × 104,( 15± 4) × 104, ( - 5 ± 2 ) × 104,and ( 1 ± 0.08 ) × 104 NTU/d.The restoration project improved lake water quality from Grade Ⅴ for surface water to Grade Ⅳ and from hypertrophic status to eutrophic status.The restoration project can effectively control load of TP and TN but insufficient to control algal growth.