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Method for treating membrane treatment concentrate of household garbage leachate

A technology of domestic garbage and treatment methods, applied in the direction of osmosis/dialysis water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problems of no mature and reliable treatment methods, etc., and achieve strong practicability and easy operation easy effect

Active Publication Date: 2011-05-18
BEIJING TDR ENVIRON TECH CO LTD
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AI Technical Summary

Problems solved by technology

Membrane separation technology can efficiently intercept dissolved inorganic pollutants and organic pollutants in sewage. The pollutants intercepted by the membrane form a membrane filtration concentrate. The content of organic matter and total dissolved solids (TDS) mainly composed of inorganic salts in the concentrate Very high, there is no mature and reliable treatment method at present, which is the biggest problem in the process of membrane separation treatment

Method used

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  • Method for treating membrane treatment concentrate of household garbage leachate
  • Method for treating membrane treatment concentrate of household garbage leachate
  • Method for treating membrane treatment concentrate of household garbage leachate

Examples

Experimental program
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Effect test

Embodiment 1

[0022] according to figure 1 As shown in the process flow chart, 1000kg of landfill leachate membrane concentrate is first passed through the disc-type filter membrane treatment equipment to obtain about 900kg of first permeate and about 100kg of organic matter-containing retentate, and the CODCr in the organic matter retentate is 10000mg / L, add flocculant and hydrogen peroxide to make CODCr 2000mg / L, then return to the adjustment tank for further processing; then pass the first permeate through the disc-type concentrated membrane treatment equipment to obtain 480kg of second permeate, Also obtain the dish tube type retentate of 420kg, then the dish tube type retentate is concentrated with concentrator (see table 1 for concentrating conditions), to the content of TDS in the concentrated solution is 5 * 10 5 mg / L, the concentration is stopped, the water vapor evaporated during the concentration process is condensed, and the condensed water (see Table 2 for the detection index ...

Embodiment 2

[0028] Pass 1,000kg of landfill percolation membrane concentrate first through disc-type filter membrane treatment equipment to obtain about 900kg of the first permeate and about 100kg of organic matter-containing intercepted liquid. The CODCr in the organic matter retained liquid is 30,000mg / L. Hydrogen peroxide, after the CODCr is 3000mg / L, return to the adjustment tank for further processing; then pass the first permeate through the disc-type concentration membrane treatment equipment to obtain 470kg of the second permeate, and also obtain 430kg of disc-type The retentate, and then concentrate the disc tube retentate with a concentrator until the content of TDS in the concentrate is 8×10 5 mg / L, the concentration is stopped, the water vapor evaporated during the concentration process is condensed, and the condensed water is mixed with the second permeate to meet the standard and discharged. Weigh the concentrated residue to obtain 125kg of high-power concentrate; dry the hi...

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Abstract

The invention discloses a method for treating membrane treatment concentrate of household garbage leachate. The method comprises the following steps of: (1) performing disc tube membrane filtration, namely allowing membrane concentrate of the garbage leachate to pass through a disc tube filtration membrane to obtain primary permeate and organic matter-containing retentate; (2) performing disc tube membrane concentration, namely allowing the primary permeate to pass through a disc tube concentration membrane to obtain secondary permeate and retentate; (3) performing thermal concentration, namely thermally concentrating the retentate by using a concentrator to obtain high-power concentrate; and (4) drying, namely drying the high-power concentrate to obtain solid powder. The method for treating the membrane treatment concentrate of the household garbage leachate is easy and convenient to operate, economic, efficient, energy-saving and pollution-free, has high practicability, is used as advanced treatment technology, effectively removes organic matters and total dissolved solid (TDS) which mainly comprises inorganic salt from the concentrate, can excellently overcome the disadvantages in the conventional household garbage leachate treatment technology and fulfills the aim of zero release during garbage leachate treatment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for treating a concentrated solution of domestic garbage leachate membrane treatment. Background technique [0002] Whether it is a landfill or a waste incineration plant, during the process of stacking and landfilling waste, a variety of metabolites and water are produced due to anaerobic fermentation, organic matter decomposition, rainwater flushing, and groundwater immersion, forming landfill leachate. Leachate treatment is the last link of sanitary landfill. If the treatment is not thorough, it will not only bring immeasurable pollution and harm to the surrounding environment, but also pose a threat to human health, and at the same time make sanitary landfill lose its original meaning. [0003] Generally, the leachate contains high concentrations of organic matter and total dissolved solids (TDS) mainly composed of inorganic salts. It has...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F1/44
Inventor 王晶王如顺齐奇
Owner BEIJING TDR ENVIRON TECH CO LTD
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