MIXED FILTER MEDIUM MATERIAL LAYER INCLUDING ZERO-VALENT IRON AND GREEN INFRASTRUCTURE INCLUDING SAME

摘要

The present invention relates to filter media of an urban green infrastructure such as rain gardens and filter strips, and more specifically, the present invention is to provide a configuration including zero valent iron as an intermediate medium of a green infrastructure. The present invention provides a sandy filter medium material layer coated with zero valent nano-iron or a mixed filter medium material layer in which zero-valent iron particles coated with a polymer are mixed together with sand, and promotes denitrification, thereby reducing and removing harmful organic substances such as oil substances and TCE generated in urban areas, In particular, when a photocatalyst is included as a filter medium, soil contamination can be prevented by denitrifying nitric acid produced by a photocatalyst.;COPYRIGHT KIPO 2017