SLOPE ACID ROCK DRAINAGE TREATMENT SYSTEM

摘要

A system for natural purification of slope acid rock drainage which prevents environmental pollution, concrete erosion, cracking of the structure bottom, and slope instability on an incised ground by moving effluent purified through a purification part to a water level control tank through a perforated pipe and discharging the purified effluent to the outside through a discharge port is provided. A system for natural purification of slope acid rock drainage comprises: a treatment tank(20) which has a predetermined depth and is vertically formed on an earth-cutting slope or an earth-forming slope; a cover(10) installed on an upper portion of the treatment tank to prevent impurities from flowing in the treatment tank; a purification part(40) comprising an organic layer(41) formed of organic matters such as mushroom compost, compost and wastewater sludge to primarily purify acid rock drainage flown in the treatment tank, and a limestone layer(42) formed of limestone in a lower part of the organic layer to secondly purify the acid rock drainage; a perforated pipe(50) which is contained in a lower end part of the limestone layer and has inflow holes(51) longitudinally formed on an outer peripheral surface thereof with being spaced apart from one another in a predetermined distance such that purified effluent(70) is discharged to the outside through the inflow holes; and a water level control tank(60) which is connected to both ends or one end of the perforated pipe to store the effluent discharged through the perforated pipe for a predetermined time, and has a discharge port(62) formed on an upper portion of one end face thereof to discharge the stored effluent to the outside.