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Coupling device and process for deeply treating landfill leachate

A technology for landfill leachate and advanced treatment, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The process is simple and the effect of improving the current utilization efficiency

Inactive Publication Date: 2019-03-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a coupling device for advanced treatment

Method used

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  • Coupling device and process for deeply treating landfill leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] combine figure 1 As shown, a coupling device for advanced treatment of landfill leachate, including:

[0038] The electrocoagulation device 1 is used to perform electrocoagulation of pollutants on the landfill leachate that has not been discharged up to the standard after biochemical treatment;

[0039] The first-stage microfiltration ceramic membrane 21 device 2 performs primary filtration on the landfill leachate after electrocoagulation of pollutants;

[0040] The secondary ultrafiltration ceramic membrane 31 device 3 performs secondary filtration on the landfill leachate after primary filtration;

[0041] The electrocoagulation device 1 is connected to the first-stage microfiltration ceramic membrane device 2 through the first water pump 4; the first-stage microfiltration ceramic membrane device 2 is connected to the second-stage ultrafiltration ceramic membrane device 3 through the second water pump 5;

[0042] The membrane pore diameter of the ultrafiltration ce...

Embodiment 2

[0050] The coupling process for advanced treatment of landfill leachate using the above-mentioned advanced treatment coupling device for landfill leachate includes the following steps:

[0051] 1) Put the landfill leachate that has not been discharged up to the standard after biochemical treatment into the electrocoagulation device 1, and electrocoagulate the pollutants in the landfill leachate to obtain the first-grade landfill leachate;

[0052] 2) Put the first-level landfill leachate into the first-level microfiltration ceramic membrane device 2, perform one-time filtration, and obtain the second-level landfill leachate;

[0053] 3) Put the secondary landfill leachate into the secondary ultrafiltration ceramic membrane device 3 for secondary filtration to obtain the landfill leachate discharged up to the standard.

[0054] Because the effluent of landfill leachate has high salt content and high solid concentration after biochemical treatment, the advanced treatment couplin...

Embodiment 3

[0057] The coupling process for advanced treatment of landfill leachate using the above-mentioned advanced treatment coupling device for landfill leachate includes the following steps:

[0058] 1) The landfill leachate that has not been discharged up to the standard after biochemical treatment is put into the electroflocculation device 1, and the pollutants in the landfill leachate are electrocoagulated to obtain a first-grade landfill leachate, wherein the soluble anode plate 11 of the electroflocculation device 1 is a cast iron anode plate, the cathode plate 12 is a stainless steel cathode plate, and the electric flocculation current density is 50mA / cm 2 , the electrocoagulation pH value is 8, the electrocoagulation time is 70min, and the net distance between the soluble anode plate 11 and the cathode plate 12 is 5cm;

[0059] 2) Put the first-level landfill leachate into the first-level microfiltration ceramic membrane device 2, and perform one-time filtration to obtain the...

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Abstract

The invention provides a coupling device and process for deeply treating landfill leachate. The coupling device comprises an electrical flocculating device, a primary microfiltration ceramic membranedevice and a secondary ultrafiltration ceramic membrane device, wherein the electrical flocculating device is connected with the primary microfiltration ceramic membrane device through a first water pump; the primary microfiltration ceramic membrane device is connected with the secondary ultrafiltration ceramic membrane device through a second water pump; the membrane pore size of an ultrafiltration ceramic membrane of the secondary ultrafiltration ceramic membrane device is smaller than that of a microfiltration ceramic membrane of the primary microfiltration ceramic membrane device. According to the coupling device for deeply treating the landfill leachate, the electrical flocculating device, the primary microfiltration ceramic membrane device and the secondary ultrafiltration ceramic membrane device are arranged and are successively used for carrying out electrical flocculation, primary filtration and secondary filtration on the landfill leachate which are not up-to-standard after the landfill leachate is subjected to biochemical treatment, so that the landfill leachate which is up-to-standard can be obtained; the whole coupling device is simple, low in up-front investment cost,low in operation cost and low in maintenance cost.

Description

technical field [0001] The invention relates to the technical field of landfill leachate treatment, in particular to a coupling device for advanced treatment of landfill leachate and a coupling process thereof. 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. The current coupled treatment system usually uses biological method or land method for pretreatment of landfill leachate, and then uses physical and chemical methods as a follow-up proce...

Claims

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Application Information

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IPC IPC(8): C02F9/06
CPCC02F1/444C02F1/463
Inventor 何頔徐剑晖赵建树周鸿波
Owner GUANGDONG UNIV OF TECH
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