Nano-filtration and reverse osmosis concentrated solution reduction treatment system and method

A technology of reverse osmosis concentrate and treatment system, applied in the field of wastewater treatment, can solve the problems of high investment and high operating cost of the treatment system, and achieve the effects of low investment cost, high treatment efficiency and low cost

Inactive Publication Date: 2012-09-12
BEIJING SOUND ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a nanofiltration and reverse osmosis concentrated solution reduction treatment system and method, which can solve the problems

Method used

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  • Nano-filtration and reverse osmosis concentrated solution reduction treatment system and method
  • Nano-filtration and reverse osmosis concentrated solution reduction treatment system and method
  • Nano-filtration and reverse osmosis concentrated solution reduction treatment system and method

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Experimental program
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Embodiment 1

[0049] This embodiment provides a nanofiltration and reverse osmosis concentrated solution reduction treatment system for reducing the nanofiltration and reverse osmosis concentrated solution. The system includes:

[0050] Lime softening processor, ultrafiltration processor and reverse osmosis processor; wherein, the lime softening processor is connected with the ultrafiltration processor and the reverse osmosis processor in turn, and the ultrafiltration concentrated water outlet of the ultrafiltration processor is connected back to the In the coagulation sedimentation processor, the water outlet of the nanofiltration treatment area is connected with the recycling device. Wherein, the lime softening processor can be connected with the ultrafiltration processor through the sand filtration treatment area formed by sequentially connecting the sand filtration feed water pump 3, the sand filter 4 and the intermediate pool 5, so as to protect the ultrafiltration membrane in the ultra...

Embodiment 2

[0057] This embodiment provides a method for reducing the amount of nanofiltration and reverse osmosis concentrates by using the above-mentioned treatment system, such as figure 2 shown, including:

[0058] The nanofiltration and reverse osmosis concentrated solution is reduced as the treated wastewater and enters the lime softening treatment, and the effluent after lime softening treatment enters the ozone oxidation tank, aerated biological filter, and ultrafiltration UF treatment to remove suspended matter in the water through the ultrafiltration membrane matter, colloid and macromolecular organic matter, and then enter the reverse osmosis treatment to remove the hardness and salt in the water through the reverse osmosis membrane, and reuse the effluent after the reverse osmosis membrane treatment; among them, lime milk needs to be added in the lime softening treatment. The effluent after lime softening treatment can be treated by ozone oxidation and biological aerated filt...

Embodiment 3

[0064] This embodiment provides a treatment method for nanofiltration and reverse osmosis concentrates using the treatment system given in Example 1, using the treatment system as described in Example 1 to reduce the nanofiltration and reverse osmosis concentrates processing, the specific process is:

[0065] Nanofiltration and reverse osmosis concentrated liquid 280m3 / h enters the softening reaction tank and then enters the softening sedimentation tank after adding lime milk. The effluent of the softening sedimentation tank is used as effluent and then is lifted by the lift pump and then enters the ozone reaction tank and biological aerated filter. The effluent from the biological aerated filter enters the intermediate pool, and the effluent from the intermediate pool is lifted by the ultrafiltration feedwater pump as a lift pump before entering the ultrafiltration equipment. Equipment, 210m3 / h reverse osmosis product water reuse, 70m3 / h reverse osmosis concentrated water dry...

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Abstract

The invention discloses a nano-filtration and reverse osmosis concentrated solution reduction treatment system and method, and belongs to the field of wastewater treatment. The system comprises a lime softening treatment device, an ozone reactor, an aeration biofilter treatment device, an ultrafiltration treatment device and a reverse osmosis treatment device, wherein the lime softening treatment device is connected with the aeration biofilter treatment device, the ultrafiltration treatment device and the reverse osmosis treatment device sequentially; an ultrafiltration concentrate outlet of the ultrafiltration treatment device is connected back to a coagulating sedimentation treatment device; and the reverse osmosis treatment device is provided with a water outlet connected with an external recycling device. The treatment system can be used for nano-filtration and reverse osmosis concentrated solution reduction treatment with low cost, and has the advantages of low investment cost and high treatment efficiency.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a treatment system and method for reducing the volume of nanofiltration and reverse osmosis concentrated liquid. Background technique [0002] In the prior art, there are mainly two treatment methods for nanofiltration and reverse osmosis concentrates, namely evaporation and advanced oxidation. [0003] Among them, the evaporation method uses high-temperature steam to evaporate the concentrated liquid. The evaporation method can separate the concentrated liquid into water and salt. However, due to the low evaporation efficiency and the high cost of the evaporator, the project investment is generally high, and its operating cost is also high. It is very high, so its application range is greatly limited. [0004] The advanced oxidation method uses photocatalytic oxidation, ultrasonic cavitation, wet oxidation or strong oxidizing substances such as chlorine dioxide, hydrogen pe...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/44
Inventor 王建泰王凯文一波李天增陈长松于金良左青
Owner BEIJING SOUND ENVIRONMENTAL ENG
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