Reducing non-point source pollution with enhancing infiltration.
The rainfall system was set up on a slope land, which was used with some materials to enhance soil infiltration. The results showed that it was effective to enhance the infiltration of rainwater in soil and reduce the pollutants of surface runoff. After the soil meliorated by the lignin polymer and zeolite, runoff was delayed about 10 min and reduced by 44.40%-50.00%, synchronously, the pollutant loads, such as total suspended solids (TSS), chemical oxygen demand by ditromate (COD(Cr)), total nitroger (TN) and total phosphorus (TP), were reduced on averages by 44.58%, 37.80%, 51.62% and 44.11%, respectively. It is an available technique to control the pollution of non-point source from sources.
Mu
Huan-Zhen
HZ
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. mhzh@rcees.ac.cn
Zheng
Tao
T
Huang
Yan-Chu
YC
Zhang
Chun-Ping
CP
Liu
Chen
C
D010100:Oxygen / Q000737:chemistry; D011891:Rain; D014876:Water Pollution
D010100:Oxygen