A biochemical treatment method and device for landfill leachate

Abstract

The invention relates to a biochemical treatment method and device for landfill leachate. The method specifically includes: firstly, the pretreated landfill leachate is put into an anaerobic biological filter for treatment, and then undergoes first-level facultative biochemical treatment, anoxic reaction After nitrification treatment and secondary aerobic biochemical treatment, the water is finally discharged through the ceramic membrane module for the subsequent advanced treatment process. The present invention has a good treatment effect, adopts anaerobic-facultative oxygen-anoxic-aerobic microbial environment to form different microbial flora, effectively improves the effect of biochemical treatment of landfill leachate, and reduces the pressure of subsequent advanced treatment. It reduces the investment and operating costs of the overall process; at the same time, it can be combined with adsorption process or reverse osmosis technology to ensure the discharge of landfill leachate up to the standard.

Description

technical field [0001] The invention relates to a biochemical treatment method and device for garbage leachate, which belongs to the field of garbage treatment and is applied to the treatment of urban domestic garbage leachate. Background technique [0002] Since entering the 21st century, my country's economy has developed rapidly, the scale of cities has continued to expand, and the process of urbanization has continued to accelerate. However, the amount of municipal solid waste generated has also increased dramatically. According to statistics, at present, the annual output of urban garbage in my country has exceeded 140 million tons, and it is growing at a rate of 8% to 10% every year. The per capita daily output of garbage has exceeded 1.1kg. up to 20,000 tons. my country has become one of the most serious countries in the world where cities are surrounded by garbage. [0003] In 2012, 157 million tons of domestic waste were collected and transported in 654 municipali...

AI Technical Summary

Problems solved by technology

Excessively high ammonia nitrogen concentration not only increases the load of the leachate biochemical treatment system, but also leads to a decrease in C / N, insufficient carbon sources, and an imbalance in the nutritional ratio of microorganisms. Moreover, the high concentration of free ammonia produced can also inhibit microorganisms and affect biochemical processes. Stable and efficient operation of the processing system

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