Soil Infiltration Treatment (SIT) is a kind of in-situ wastewater treatment technique, making full use of animals, plants, microorganisms in soil and the physico-chemical characteristics of soil.

• 土壤渗滤法是一种充分利用土壤中的动物、植物、微生物以及土壤的物理、化学特性的污水就地处理技术。