TREATMENT DEVICE FOR LEACHATE CONTAINING HIGH ORGANIC AND AMMONIA NITROGEN

摘要

PURPOSE: A treatment equipment of leachate containing high concentration organic matter and ammonia nitrogen is provided, which can remove organic matter by 91 % as CODmn, 99 % as BOD and nitrogen by 70 %. CONSTITUTION: The system comprises the followings: (i) a control tank(1) for controlling pH of the influent water; (ii) an upflow anaerobic reaction tank(2) for removing biodegradable organic matter contained in the leachate; (iii) two anoxic tanks(3) for mixing the water of the anaerobic reactor(2) and recirculated leachate and for denitrifying nitric nitrogen contained in the leachate; (iv) two aeration tank(4) for nitrifying ammonia nitrogen contained in leachate discharged from the anoxic tank(3); (v) a settling tank(4-2) for recirculating the nitrified leachate to the anoxic tank(3); (vi) No.1 chemical coagulating tank(10) for primary settling by feeding cohesive agent and by adjusting pH to remove non-biodegradable organic matter; (vii) a Fenton oxidation tank(11) for oxidizing micro organic matter in wastewater by feeding catalyst and oxidizing agent; (viii) No.2 chemical coagulating tank(14) for coagulation settling by controlling pH; and (ix) a filter media packing tank(4-1) in which filter media is charged to enhance oxidation rate of ammonia nitrogen.