Treatment device and treatment process method for leachate from waste incineration plants

Abstract

The invention discloses a treatment device and a treatment process method for leachate from waste incineration plants. The device comprises a grid chamber, a regulating pool, a settling pool, a hydrolysis and acidification pool, a sequencing batch reactor (SBR) reaction pool, a coagulating pool and a disinfecting pool. The treatment process method comprises: subjecting the leachate to screen filtering by a coarse grid and screen filtering by a fine grid in turn; regulating the quality and amount of the leachate in the regulating pool; settling in the inclined plate settling pool and performing hydrolysis and acidification reactions in the folded plate type hydrolysis and acidification pool; conveying effluent to the SBR reaction pool by batch, and processing by batch according to a sequence of water filling, reaction, settling and discharge of treated water; discharging water after coagulation and settlement in the coagulating pool; and recycling the effluent after disinfection and sterilization. The device and the method have the advantages that: the indexes of the treated water all reach water quality requirements on cooling water of The Reuse of Urban Recycling Water-Water Quality Standard for Industrial Use; the treated water can be supplied to circulating cooling water systems of waste incineration plants to be reused; and the goal of 'zero emission' of wastewater of the waste incineration plants can be fulfilled.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to the treatment technology of garbage leachate in waste incineration power plants. Background technique [0002] Domestic waste incineration power generation treatment method is one of the main ways of urban domestic waste treatment. The water content of municipal solid waste in my country is high. After being piled up in a large amount in the storage pit before incineration, it will ferment to produce leachate. The water quality of the leachate is complex, the concentration of organic matter is high, the content of ammonia nitrogen is high, the color is deep, and the odor is strong. The treatment process High difficulty. In the prior art, there are two main types of leachate treatment methods: one is to directly discharge the leachate into the urban sewage treatment plant for combined treatment after a certain pretreatment; the other is to treat the leachate Treated sepa...

AI Technical Summary

Problems solved by technology

Combined treatment requires the leachate to be transported to the sewage treatment plant through pipelines. The transportation cost is high, economically unreasonable, and will impact the treatment system of the sewage treatment plant

Separate treatment of leachate, the existing leachate treatment process, there are many forms, but not ideal in terms of efficiency, effect, investment cost, etc.

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