Garbage percolate treatment method

Abstract

The invention discloses a garbage percolate treatment method, and belongs to the technical field of waste resource treatment. The method adopts an anaerobic and aerobic mode to treat garbage percolate, and comprises the following steps that: the garbage percolate is collected in an adjusting tank; after the garbage percolate is evenly stirred, the pH is adjusted, and the garbage percolate is injected into an anaerobic reactor and subjected to anaerobic fermentation at a temperature of between 30 and 39 DEG C; the anaerobic effluent enters a primary aerobic system, the flow rate of the water in an aerobic tank reaches 0.2 to 1 meter per second under the action of an aeration device, then a biochemical environment with a high dispersion system and high transfer mass is formed in a reaction tank, and the wastewater is subjected to high-strength oxidation treatment; the garbage percolate enters a secondary aerobic system and is subjected to anaerobic, facultative aerobic and aerobic multi-level circulating treatment, and ammonia and nitrogen are fully discomposed and removed under the circular action of denitrification and nitration; the secondary aerobic effluent is subjected to coagulation treatment in a sedimentation tank, and the effluent color is solved; and the sludge is used for reflowing and fertilizing gardens and parks. By applying the method, the clean energy source which is methane can be acquired, and the aim of the garbage percolate can be treated at low cost.

Description

technical field [0001] A treatment method for landfill leachate belongs to the technical field of waste resource treatment. Background technique [0002] With the increase of my country's urban population, the expansion of scale, and the improvement of residents' living standards, the output of urban domestic waste in my country is increasing sharply. The per capita daily waste production has exceeded 1kg, which is close to the level of developed countries, and the total amount of urban waste is 8% to 100% per year. If the amount increases by 10%, the landfill leachate will pollute the water body, soil, atmosphere, etc., causing the surface water body to lack oxygen, deteriorating water quality, and eutrophication, threatening drinking water and industrial and agricultural water sources, and making groundwater lose its use value. Entering the food chain will directly threaten human health. [0003] Landfill leachate is a kind of toxic and harmful high-concentration organic wa...

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Problems solved by technology

[0006] The biggest problem encountered in the harmless treatment and resource utilization of landfill leachate, especially in industrialized development, is that the water quality and quantity vary greatly, there are various types of pollutants, the concentration of organic matter is high, and the content of ammonia nitrogen is high. The treatment is very difficult. Conventional dehydration The method is not only expensive to process, but also difficult to maintain a stable system

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