NONPOINT POLLUTION SOURCE'S SANITATION FACILITIES TAKE ADVANTAGE POROUS BIOFILTER (SCORIA)

PURPOSE: A nonpoint pollution processing facility using a porous biofilter(scoria) is provided to prevent water contamination when contaminated materials are flowed through rainwater, and to reduce management costs for solving a water contamination problem. CONSTITUTION: A nonpoint pollution processing facility using a porous biofilter(scoria) includes the following: scoria decomposing microorganism and removing heavy metals when initial rainwater is flowed; the biofilter separating solid materials included in rain water; and an Over-passage blocking an inflow pipe and storing initial rainwater. The fresh water in the facility is completely discharged in the constant time.