Study on pretreatment filtration performance and its influence on pollution load of bioretention facilities
The single and cumulative pollutant removal effects of common filtration media in pretreatment were studied,and biological retention facilities of three different soil media layers were built to explore the effects of filtration effects of pretreatment facilities on pollution loads of biological retention facilities.The results show that the pretreatment facility can significantly in-crease the limit pollution load and emptying rate of the downstream bioretention facility.When the SS removal rate of pretreatment facilities is increased from 0％to 40％,the limit pollution load of biological retention facilities is increased by about 80％.When the SS removal rate of pretreatment facility is increased from 40％to 60％,the increase of the limit pollution load of the biological retention facility begins to weaken.From the perspective of comprehensive benefit,it is suggested that the SS removal rate of pretreatment facilities should be about 40％.
万方数据
维普
