Abstract: 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 (CODCr), 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.
