Landfill leachate reinjection process

Abstract

The invention discloses a landfill leachate reinjection process. The process comprises the following steps of (1) collection of a leachate, wherein the leachate is conveyed to a blind ditch through aninfusion tube and then conveyed to a leachate regulating reservoir through a leachate conveying pipe; (2) pretreatment of the leachate, wherein a microbial amphimicrobe preparation is added into theleachate for pre-treatment; (3) division of areas, wherein a landfill is divided into an undone landfill area, a filled landfill area and a to-be-filled landfill area according to the methane content;(4) reinjection of the leachate, wherein the leachate is reinjected to the undone landfill area and the filled landfill area separately. Different strains in the microbial amphimicrobe preparation can inhibit the growth of various pathogenic bacteria and viruses in the landfill and can increase the yield of biogas; by performing leachate reinjection on the undone landfill area and the filled landfill area and utilizing the biological action of the undone landfill area and the filled landfill area to accelerate the leachate reinjection process, the production value of the biogas is further increased; a biogas treatment system collects the biogas produced by the landfill for utilization, and the utilization degree of resources is improved.

Description

technical field [0001] The invention relates to the technical field of recharge, in particular to a landfill leachate recharge process. Background technique [0002] With the continuous improvement of people's living standards and the acceleration of urbanization, the output of urban waste is increasing. At present, urban waste is growing at a rate of 8% to 10% per year. Compared with waste incineration and composting, sanitary filling The burial method has the advantages of low cost, mature technology, and convenient management, and has become the most widely used method for harmless treatment of garbage. However, in the process of sanitary landfill of garbage, it will produce highly polluting landfill leachate, which is harmful to the ecological environment and There are greater hazards to human health. Therefore, the pollution control of leachate is a key issue that landfills need to deal with. [0003] The existing leachate treatment usually adopts the recharge process...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a landfill leachate recharge process, aiming to solve the problem of the unsatisfactory recharge effect of the existing landfill recharge process, the damage of the leachate to the covering film of the garbage dump and the failure of the garbage dump. The technical problem of increasing the amount of biogas produced

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