Urban garbage transfer station leachate in-situ denitrification and carbon removal integrated apparatus and urban garbage transfer station leachate in-situ denitrification and carbon removal integrated process

Abstract

The invention discloses an urban garbage transfer station leachate in-situ denitrification and carbon removal integrated apparatus and an urban garbage transfer station leachate in-situ denitrification and carbon removal integrated process. According to the process, a transfer station leachate enters UASB and is subjected to efficient hydrolysis acidification and anaerobic biogas production; afterthe low C / N anaerobic biogas liquid flows through a primary sedimentation tank, the supernatant enters a multi-stage micro-oxygen biochemical system and is subjected to efficient and synchronous denitrification and carbon removal; after the biochemical effluent passes through a secondary sedimentation tank, the supernatant enters a coagulation tank and is subjected to deep carbon-controlled denitrification and phosphorus removal; mud-water separation is performed by a physicochemical sedimentation tank, such that the quality of the effluent meets the standard in the table 2 of Standard for pollution control on the landfill site for domestic waste (GB16889-2008); the remaining sludge produced by the UASB and a novel denitrification and carbon removal system and the physicochemical sludge produced by the coagulation tank enter a sludge filter press and are subjected to pressure filtration and dewatering so as to be externally transported; and the waste gases produced by the UASB, the novel denitrification and the coagulation tank enter a waste gas treatment system and are treated so as to achieve the discharge standard. The apparatus of the present invention has advantages of high denitrification and carbon removal efficiency, strong impact-load resistance, low running cost, short residence time, good stability, simple operation, simultaneous standard treatment of solid-liquid-gas, and the like.

Description

technical field [0001] The invention belongs to the field of environmental protection wastewater treatment, and in particular relates to an integrated device for in-situ denitrification and carbon removal of leachate in urban garbage transfer stations and a process thereof. Background technique [0002] At present, as an important hub and necessary link in the urban domestic waste collection and transportation system, the garbage transfer station can effectively reduce the treatment pressure of urban garbage landfills and reduce the cost of garbage removal and transportation. However, the high-concentration COD and ammonia nitrogen leachate generated during the operation of the transfer station is likely to cause secondary pollution, which has become a secondary pollution source that urgently needs to be solved in cities and towns. [0003] The leachate of the garbage transfer station mainly includes the garbage press filtrate produced during the garbage compression process,...

AI Technical Summary

Problems solved by technology

However, in the actual operation of the membrane process, there are also problems such as cumbersome operation process, strict load requirements, expensive chemicals, high membrane replacement costs, and concentrated solution pollution. The high investment and construction costs and operating costs make most domestic waste transfer stations and landfills are unbearable

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