Coupling process for advanced treatment of landfill leachate

Abstract

The invention is applicable to the technical field of garbage treatment, and provides an electric flocculation coupling system for advanced treatment of landfill leachate. The system comprises an electric flocculation coupling filter device provided with an electrolytic flocculation tank at the front end and a photocatalytic ceramic membrane filter tank at the rear end; the electrolytic flocculation tank is provided with an anode electrolytic plate, a cathode electrolytic plate, a stirrer and a PH adjusting device; a photocatalytic ceramic module assembly and a photocatalytic light source arearranged in the photocatalytic ceramic membrane filter tank; the electrolytic flocculation tank is used for pumping the landfill leachate subjected to electrolytic flocculation into the photocatalyticceramic membrane filter tank through a lifting pump; the density of current introduced into the electrolytic flocculation tank is 10-1000 mA / cm<2>, the distance between the anode electrolytic plate and the cathode electrolytic plate is 1-20 cm, the PH value is 6-9, and the electrolytic flocculation time is 20-90 min; and the photocatalytic ceramic membrane assembly is formed by combining at leasttwo non-metal doped titanium dioxide ceramic membranes, and the pore diameter is 100-1000 nm.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, in particular to an electrocoagulation coupling system for advanced treatment of garbage leachate. Background technique [0002] The process methods for treating landfill leachate include biological treatment, physical and chemical methods, land treatment methods and recharge methods. However, because the pollutant types, content and water volume of landfill leachate vary greatly in different regions and seasons, and contain a large number of difficult-to-treat substances, it is difficult to meet the discharge requirements of leachate by simply using a certain process, and different processes need to be Reasonable coupling can ensure that the leachate meets the discharge standard. In actual engineering, specific problems need to be analyzed in detail, and appropriate treatment technologies should be adopted according to the water quality and characteristics to be treated. In coupled t...

AI Technical Summary

Problems solved by technology

At present, the membrane treatment process is often used as an advanced treatment process after biochemical treatment, which can effectively ensure that the treated effluent of landfill leachate meets the national standard, but there are still some problems to be solved in the actual construction and operation of the project, such as large initial investment and process operation. High cost, difficult to handle concentrate, etc.

Images