Full-quantitative treatment method for landfill leachate

Abstract

The invention discloses a full-quantitative treatment method of landfill leachate, which comprises the following steps: carrying out iron-carbon micro-electrolysis coupled electron beam irradiation deep treatment on the landfill leachate subjected to physicochemical pretreatment, electron beam irradiation pre-oxidation treatment and primary A / O biochemical system treatment, then carrying out coagulating sedimentation mud-water separation, carrying out denitrification treatment through a second-stage A / O biochemical system, so as to realize up-to-standard discharge of effluent. According to the full-quantitative treatment method for the landfill leachate, an electron beam irradiation oxidation combined process is adopted to implement front-end pre-oxidation and improve the biochemical property of the leachate, and an iron-carbon micro-electrolysis and electron beam irradiation combined synergistic process is adopted as a deep treatment process, so that various pollutant indexes can reach emission standards, and full-quantitative emission can be realized.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for fully quantitatively treating landfill leachate based on an electron beam irradiation combined process. Background technique [0002] With the rapid development of the economy and the gradual improvement of people's quality of life, the output of municipal solid waste is also increasing. According to the China Statistical Yearbook, by the end of 2017, the national domestic waste disposal volume had reached 215 million tons. For domestic waste, developed countries have used waste incineration technology on a large scale to realize the recycling, reduction and harmlessness of waste. However, at present, the main treatment and disposal method of domestic waste in my country is still centralized collection-sanitary landfill. It is estimated that in the next few years, the proportion of sanitary landfill plants will still exceed 50%, and sanitary land...

AI Technical Summary

Problems solved by technology

However, recharging will cause the accumulation of refractory, toxic and harmful pollutants and heavy metal ions in the raw water of landfill leachate, the continuous increase of ammonia nitrogen and electrical conductivity, and the continuous decrease of the biodegradability of wastewater, thereby inhibiting the subsequent biochemical process and causing the effluent quality to exceed the standard; In addition, the energy consumption of membrane concentrated water concentration and evaporation is high, and the cost of chemicals is high, and a certain proportion of concentrated liquid or solid waste will still be produced

Therefore, none of the above processes can achieve full discharge

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