Leachate treatment method for garbage transfer station

Abstract

The invention discloses a leachate treatment method for a garbage transfer station. The method comprises the steps of S1, enabling leachate to pass through a grating well, blocking large impurities byutilizing grating in the grating well, enabling the leachate passing through the grating well to enter oil removal equipment, conveying floating oil at the top of the leachate to an oil collection storage tank through an oil-water separator, removing most of the floating oil, and enabling the leachate to enter an adjusting tank after the oil removal process is completed. The invention relates tothe technical field of sewage treatment. According to the leachate treatment method for the garbage transfer station, the oil removal device, the adjusting tank, a reaction sedimentation tank, a buffer tank, an anaerobic reactor, a tank A (denitrification tank), a tank O (nitrification tank), an MBR tank, a clean water tank, a nanofiltration membrane and a reverse osmosis membrane are arranged. Inallusion to the characteristics of landfill leachate, especially the difficulties of high COD content and high ammonia nitrogen content, the scheme design adopts oil removal, coagulating sedimentation, a salt-tolerant anaerobic technology, a nitrification-denitrification biochemical treatment technology and an RO membrane system to ensure that the effluent reaches the limit standard.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a leachate treatment method of a garbage transfer station. 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 of organic wastewater; the properties of landfill leachate change with the operation time of the landfill, which is mainly determined by the stabilization process of the waste in the landfill; the stabilization of the landfill The process of acidification is usually divided into five stages, namely initial adjustment stage, transition stage, acidification stage, methane fermentation stage and maturation stage. [0003] The leachate treatment of the existing garbage ...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for treating leachate in a garbage transfer station, which solves the risk that the effluent does not meet the standard when treating the leachate in the existing garbage transfer station, and the investment cost of the DTRO membrane system is high. Need high pressure, easy to foul the problem of DTRO diaphragm

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