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Method and system for treating concentrated liquid from reverse osmosis of high concentration waste water

A technology of high-concentration wastewater and treatment methods, applied in the fields of osmosis/dialysis water/sewage treatment, biological water/sewage treatment, water/sewage multi-stage treatment, etc. problems, to achieve the effect of efficient treatment

Active Publication Date: 2007-06-06
JIANGXI JDL ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and system for treating concentrated liquid of high-concentration wastewater through reverse osmosis process, so as to make up for the defects in the prior art that the treatment of concentrated water causes secondary environmental pollution and cannot effectively and thoroughly control pollution.

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  • Method and system for treating concentrated liquid from reverse osmosis of high concentration waste water
  • Method and system for treating concentrated liquid from reverse osmosis of high concentration waste water
  • Method and system for treating concentrated liquid from reverse osmosis of high concentration waste water

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Embodiment 1

[0040] According to Fig. 1, the present invention includes at least the adjustment tank 11, the reaction tank 12, the sedimentation tank 13 and related pump equipment, the membrane bioreactor 2, the membrane treatment system 3 and the enhanced drying tank 4 that carry out the primary physical and chemical treatment of the landfill leachate. The pretreatment water produced by the primary physical and chemical treatment is input to the membrane bioreactor 2, and the membrane bioreactor 2 includes activated sludge method---aerobic tank and hollow fiber ultrafiltration membrane. In the present invention, the membrane bioreactor 2 Integrating activated sludge method and membrane separation, membrane separation is performed at the same time as biological treatment. After membrane bioreactor 2 performs biological treatment and membrane separation on pre-treated water, membrane bioreactor 2 outputs reclaimed water to membrane treatment system 3 , the membrane treatment system 3 perform...

Embodiment 2

[0063] As shown in FIG. 7 , the difference between this embodiment and Embodiment 1 is that in this embodiment, the membrane treatment system 3 adopts a reverse osmosis membrane device 32 to perform single-stage membrane treatment on reclaimed water.

[0064] The principles, structures, and methods of other parts are the same or similar to those described in Embodiment 1, and will not be repeated here.

[0065] In the present invention, a plurality of nanofiltration devices 31 or a plurality of reverse osmosis membrane devices 32 can be used to carry out multi-stage membrane treatment of reclaimed water, which can be implemented without creative work for those of ordinary skill in the art. I won't repeat them here.

Embodiment 3

[0067] As shown in Figure 8, the difference between this embodiment and Embodiment 1 is that in this embodiment, the membrane treatment system 3 uses a nanofiltration device 31 and a reverse osmosis membrane device 321, 322 to perform multi-stage membrane treatment on reclaimed water. The multi-stage membrane specifically includes three-stage membrane treatment, which is completed through nanofiltration device 31, concentrated water tank 33, high-pressure pump 34, primary reverse osmosis membrane device 321, concentrated water tank 35, high-pressure pump 36, and secondary reverse osmosis membrane device 321. grade film treatment.

[0068] The principles, structures, and methods of other parts are the same or similar to those described in Embodiment 1, and will not be repeated here.

[0069] Similarly, the use of the nanofiltration device 31 and the reverse osmosis membrane device 32 can complete the 2-stage and 3-stage membrane treatment, which can be implemented by those skil...

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Abstract

The present invention is method and system for treating concentrated liquid from the reverse osmosis of high concentration waste water. The method includes the following steps: 1. initial physical and chemical treatment on garbage percolating liquid to produce pre-treated water; 2. biologically treating and membrane separating the pre-treated water in a membrane bioreactor to produce intermediate water; 3. treating the intermediate water in a membrane treating system and conveying the concentrated water to the drying pond; and 4. drying the concentrated water to produce solid matter. The system includes at least regulating pond, reaction pond, settler and pump for the initial treatment; membrane bioreactor and membrane treating system; and drying pond. The present invention has no secondary pollution, and possesses effective and complete pollution treating effect.

Description

technical field [0001] The invention relates to a treatment method for high-concentration wastewater, in particular to a method and system for treating concentrated liquid of high-concentration wastewater through a reverse osmosis process. Background technique [0002] Landfill leachate and papermaking, alcohol, dyes, pesticides, leather, viscose, monosodium glutamate, sugar, farming and other high-concentration wastewater have high pollution loads, and their chemical oxygen demand (COD: Chemical OxygenDemand is as high as thousands to tens of thousands mg / l , poor biodegradability, and often contains toxic and harmful substances, high solid content concentration, usually incineration treatment, dilution treatment or chemical treatment, but due to the limitations of the above methods, it is easy to cause secondary pollution, and the operation cost is expensive , the enterprise is unbearable. [0003] In the treatment of high-concentration wastewater, it is difficult for gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/44C02F3/12C02F3/10
CPCY02W10/10
Inventor 廖志民郭景奎吴吉军杨茂杨欣李荣万爱国俞坤陈晋何凌云魏旭夏晓春赵敏慧
Owner JIANGXI JDL ENVIRONMENTAL PROTECTION CO LTD
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