Deep treatment process of garbage percolate biochemical effluent

Abstract

The invention relates to a deep treatment process of garbage percolate biochemical effluent. The deep treatment process of the garbage percolate biochemical effluent comprises the following steps: adding a flocculating agent into the garbage percolate biochemical effluent, entering a coagulative precipitation tank, mixing uniformly, standing and precipitating; enabling the precipitated garbage percolate to enter a low-temperature plasma reactor to remove most of organic matters from the garbage percolate; enabling the garbage percolate treated by the low-temperature plasma reactor to enter a biological aerated filter to remove the residual organic matters from water; enabling one part of the percolate treated by the biological aerated filter to return the to-be-treated garbage percolate biochemical effluent through a reflux pipeline, adding the flocculating agent into the coagulative precipitation tank, and repeating the cycle; and performing up-to-standard discharge on the other part of the percolate through a discharge pipe of the biological aerated filter. The process is used for treating the percolate biochemical effluent, so stable and up-to-standard discharge can be realized and concentrated liquid is avoided.

Description

technical field [0001] The invention is applicable to the sewage treatment process, and in particular relates to a process for treating the biochemical effluent of landfill leachate by adopting the technology of "coagulation + advanced oxidation + biochemistry". Background technique [0002] There are many kinds of organic pollutants in municipal solid waste leachate, the water quality is complex, the content of ammonia nitrogen and heavy metals is high, the water quality and quantity vary greatly, and the treatment is difficult. At present, we can treat it to the third-level standard of "Integrated Wastewater Discharge Standard" (GB8978-1996), but how to reach the first-level standard or "Standards for Pollution Control of Domestic Waste Landfill Sites" (GB 16889-2008) or even zero Emissions are still a problem. Membrane treatment is an advanced treatment method widely used at present, which can make the effluent stable up to the first-class standard, but the concentrated ...

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of organic pollutants in municipal solid waste leachate, the water quality is complex, the content of ammonia nitrogen and heavy metals is high, the water quality and quantity vary greatly, and the treatment is difficult

At present, we can treat it to the third-level standard of "Integrated Wastewater Discharge Standard" (GB8978-1996), but how to reach the first-level standard or "Standards for Pollution Control of Domestic Waste Landfill Sites" (GB 16889-2008) or even zero Emissions are still a problem

Membrane treatment is an advanced treatment method widely used at present, which can make the effluent stable up to the first-class standard, but the concentrated solution produced by it is a headache

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