Garbage leachate processing method and system

Abstract

The invention discloses a garbage leachate processing method, and a system. The system comprises a first conditioning pool, an ultrasonic wave reaction pool, a second conditioning pool, a first grade iron carbon micro electrolytic tank, a first coagulation sedimentation basin, a carrier microbe biochemical treatment system, and an environmental protection filling material filter device which are communicated successively; the ultrasonic wave reaction pool is used for ultrasonic wave reaction of water discharged through the first conditioning pool; the first grade iron carbon micro electrolytic tank is used for iron carbon micro electrolysis catalysis oxidation reaction of water discharged through the second conditioning pool; the first coagulation sedimentation basin is used for coagulation sedimentation of water discharged through the first grade iron carbon micro electrolytic tank; the carrier microbe biochemical treatment system comprises a hydrolysis-acidification pool and an anaerobic-anoxic-aerobic biological nitrogen and phosphorus removal system which are connected successively; and the environmental protection filling material filter device is used for filtering water discharged through the carrier microbe biochemical treatment system. According to the garbage leachate processing method and the system, a physicochemical processing system and a biochemical processing system are combined, and after processing, tail water total nitrogen content can be reduced to 20 to 30mg / L.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering sewage treatment, in particular to a method and system for treating landfill leachate. Background technique [0002] Landfill leachate refers to the moisture contained in the garbage itself in the landfill, the rain and snow water and other moisture entering the landfill, deducting the saturated water holding capacity of the garbage and the covering soil, and passing through the garbage layer and the covering soil. A high concentration wastewater. High concentration of ammonia nitrogen is one of the water quality characteristics of leachate, and the concentration of ammonia nitrogen in leachate generally ranges from tens to thousands of milligrams per liter. According to the change law of leachate water quality produced by domestic waste landfills, with the extension of landfill time, the concentration of ammonia nitrogen in leachate tends to increase, and the biochemical proper...

AI Technical Summary

Problems solved by technology

According to the change law of leachate water quality produced by domestic waste landfills, with the extension of landfill time, the concentration of ammonia nitrogen in leachate tends to increase, and the biochemical properties decrease.

[0003] Due to the complex composition of landfill leachate, high pollution concentration, and high content of heavy metal ions, and with the aging of landfill leachate, biochemical disorders of leachate generally occur, high operating costs, pollutant accumulation, and total nitrogen exceeding the standard and other problems, the original process is difficult to meet the actual operation needs, and it is difficult to achieve stable water discharge standards

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