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Treatment method for landfill leachate membrane treatment evaporated and concentrated liquor

A technology for evaporating concentrated liquid and landfill leachate, which is applied in the direction of contaminated groundwater/leachate treatment, permeation/dialysis water/sewage treatment, multi-stage water treatment, etc. It can solve the problems of low strength of solidified body, high product leaching rate, It is difficult to control the operation and other problems, and achieve the effect of good treatment effect, strong anti-penetration ability and fast curing speed

Inactive Publication Date: 2018-11-30
武汉天源环保股份有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

During the cement curing process, due to the particularity of the waste composition, problems such as uneven mixing, premature or late solidification, difficult operation, high leaching rate of the product, and low strength of the solidified body are often encountered.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The method for treating the evaporated concentrate after the membrane treatment of landfill leachate in this embodiment comprises the following steps,

[0021] S1, weigh 1000g of landfill leachate membrane treatment and evaporate the concentrate;

[0022] S2, add 1000g of sulphoaluminate cement, 1g of A-980 chelating agent produced by Guangzhou Xijie Environmental Protection Technology Co., Ltd. and 1g of Na 2 SO 4 , mix evenly, landfill after solidification.

[0023] The chemical components and parameters of the incoming evaporated concentrate after landfill leachate membrane treatment were tested, and the results shown in Table 1 were obtained:

[0024] Table 1 The test results of incoming evaporated concentrate after landfill leachate membrane treatment

[0025] Test items

Test results

Phosphorus (mg / L)

12.6

Mercury (mg / L)

0.06

Cadmium (mg / L)

0.08

Total Chromium (mg / L)

1.71

Arsenic (mg / L)

0.57

L...

Embodiment 2

[0030] The method for treating the evaporated concentrate after the membrane treatment of landfill leachate in this embodiment comprises the following steps,

[0031] S1, weigh 1000g of landfill leachate membrane treatment and evaporate the concentrate;

[0032] S2, add the sulfoaluminate cement of 1000g, the XJ101 chelating agent that the Lianyungang Xinjiang Environmental Protection Material Co., Ltd. of 2g produces and 2gNa 2 SO 4 , mix evenly, landfill after solidification.

Embodiment 3

[0034] The method for treating the evaporated concentrate after the membrane treatment of landfill leachate in this embodiment comprises the following steps,

[0035] S1, weigh 1000g of landfill leachate membrane treatment and evaporate the concentrate;

[0036] S2, add 1000g of sulphoaluminate cement, 3g of MST4010 chelating agent produced by Shanghai Fuyin Environmental Protection Technology Co., Ltd. and 3g of CaSO 4 , mix evenly, landfill after solidification.

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Abstract

The invention discloses a treatment method for landfill leachate membrane treatment evaporated and concentrated liquor. The treatment method is characterized in that sulfate aluminum cement is adopted, and has high curing speed and strong permeability resistance in comparison with conventional silicate cement. Silicate cement, a heavy metal ion chelating agent and an additive are taken as curing agent main components, and can be effectively combined with pollutants such as organic substances and heavy metal in landfill leachate membrane treatment evaporated and concentrated liquor, so that thepollutants are cured in a curing body, and therefore, the harmless and stable purpose is achieved. The treatment method is simple in process, is high in practicability, is good in treatment effect, is taken as a deep treatment technology, makes up the defects of an existing landfill leachate membrane treatment evaporated and concentrated liquor treatment technology, and effectively solves the treatment problem of the landfill leachate membrane treatment evaporated and concentrated liquor.

Description

technical field [0001] The invention relates to the technical field of landfill leachate treatment, in particular to a treatment method for evaporated concentrated liquid after membrane treatment of landfill leachate. Background technique [0002] With the development of biotechnology and membrane treatment technology, the combined process of biochemical method + membrane method has gradually become the mainstream technology of leachate treatment. In 2008, the state issued the "Standards for Pollution Control of Domestic Garbage Landfill Sites" (GB16889-2008), which put forward higher requirements for the treatment of landfill leachate. NF and RO membranes are more and more used in the treatment of landfill leachate. Processing. [0003] Landfill leachate membrane filtration concentrate is the residual liquid intercepted by RO membrane or NF membrane after biodegradation. It is generally not biodegradable, brown-black in color, high in COD, and contains a large amount of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F103/06
CPCC02F1/048C02F1/44C02F9/00C02F2103/06C02F2301/08
Inventor 黄开明余维金李红王志平
Owner 武汉天源环保股份有限公司
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