SANDS OF CONSTRUCTED WETLAND FOR THE TREATMENT OF WASTEWATER

摘要

The present invention relates to a filter cloth for artificial wetland, characterized in that consisting of 70 to 90% by weight of the filtration sand and 10 to 30% by weight oyster shell.;According to the present invention, the artificial wetland filtration sand is used for living sewage, polluted rivers, nonpoint source and sewage / wastewater aftertreatment facilities to ensure water permeability even when the polluted water is directly introduced, and the gap between the particles of the filtered sand ) Provides a place for microorganisms to grow, and has the effect of maximizing contact between the roots of upper purified plants, sewage and air.;Filtrate for artificial wetland, Filtrate, Oyster shell