| 摘要 |
A landfill leachate treatment system which obtains excellent treatment efficiency of leachate by improving treatment efficiency of organic matter and nitrogen, and can help early stabilization of a sanitary landfill by reducing treatment cost is provided. A landfill leachate treatment system using bio-blocks comprises: a flow equalization tank(1) for controlling rapid increase and decrease of an amount of leachate flown into a sanitary landfill; a dissolved air flotation tank(2) for contacting water treatment chemicals with leachate flown in from the flow equalization tank in a static mixer to chemically treat the leachate; a first settling tank(3) for settling leachate flown in from the dissolved air flotation tank to treat the leachate; an anoxic tank(4) for performing denitrification reaction of leachate flown in from the first settling tank to remove nitrogen from the leachate; a biofilm tank(5) for degrading organic matter by passing leachate flown in from the anoxic tank through bio-blocks which is formed in a cylindrical shape using high density polyethylene resin, and has creased projections formed on an outer peripheral surface thereof; a second settling tank(6) for settling again leachate flown in from the biofilm tank to treat the leachate; and a discharge tank(7) for discharging treated water finally treated through the second settling tank to the outside. |
