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Separation method for sewage treatment through floc reinforced hollow fiber membrane and separation device therefor

A separation method and separation device technology, applied in semi-permeable membrane separation, chemical instruments and methods, permeation/dialysis water/sewage treatment, etc., can solve the problems of incomplete settling of small particles, large footprint, long residence time, etc. , to achieve the effect of long running time, low running energy consumption and good water quality

Active Publication Date: 2013-09-18
BEIJING ORIGIN WATER FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this water treatment process, there are problems such as long residence time, large floor area, small treatment capacity and incomplete settlement of small particles in the natural settlement method.

Method used

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  • Separation method for sewage treatment through floc reinforced hollow fiber membrane and separation device therefor
  • Separation method for sewage treatment through floc reinforced hollow fiber membrane and separation device therefor
  • Separation method for sewage treatment through floc reinforced hollow fiber membrane and separation device therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Put the curtain membrane of the prepared floc-reinforced hollow fiber membrane into the membrane tank 17, and the membrane total area of ​​the curtain membrane is 3m 2 , The sludge concentration in the membrane tank is 1.1g / L.

[0032] (2) start the blower 8, adjust the gas flowmeter 9 of the blower, so that the aeration intensity of the membrane pool is 10m 3 / m 2 h.

[0033] (3) Start the suction pump 13, adjust the liquid flow meter 14 of the suction pump so that the negative pressure gauge is 0.002 MPa, and run for 3 minutes.

[0034] (4) After the sludge forms a floc membrane on the surface of the floc reinforced hollow fiber membrane, start to adjust the liquid flow meter 14 of the suction pump so that the operating flux of the floc reinforced hollow fiber membrane is 35L / m 2 h, running for 32 minutes, when the pressure of the negative pressure gauge exceeds 50kPa.

[0035] (5) When the pressure of the negative pressure gauge exceeds 50kPa, it starts to en...

Embodiment 2

[0039] (1) Put the curtain membrane of the prepared floc-reinforced hollow fiber membrane into the membrane tank 17, and the membrane total area of ​​the curtain membrane is 3m 2 , The sludge concentration in the membrane tank is 1.1g / L.

[0040] (2) start the blower 8, adjust the gas flowmeter 9 of the blower, so that the aeration intensity of the membrane pool is 10m 3 / m 2 h.

[0041](3) Start the suction pump 13, adjust the liquid flow meter 14 of the suction pump so that the negative pressure gauge is 0.002 MPa, and run for 3 minutes.

[0042] (4) After the sludge forms a floc membrane on the surface of the floc reinforced hollow fiber membrane, start to adjust the liquid flow meter 14 of the suction pump so that the operating flux of the floc reinforced hollow fiber membrane is 35L / m 2 h, running for 32 minutes, when the pressure of the negative pressure gauge exceeds 50kPa.

[0043] (5) When the pressure of the negative pressure gauge exceeds 50kPa, it starts to ent...

Embodiment 3

[0047] (1) Put the curtain membrane of the prepared floc-reinforced hollow fiber membrane into the membrane tank 17, and the membrane total area of ​​the curtain membrane is 3m 2 , The sludge concentration in the membrane tank is 1.1g / L.

[0048] (2) start the blower 8, adjust the gas flowmeter 9 of the blower, so that the aeration intensity of the membrane pool is 10m 3 / m 2 h.

[0049] (3) Start the suction pump 13, adjust the liquid flow meter 14 of the suction pump so that the negative pressure gauge is 0.002 MPa, and run for 3 minutes.

[0050] (4) After the sludge forms a floc membrane on the surface of the floc reinforced hollow fiber membrane, start to adjust the liquid flow meter 14 of the suction pump so that the operating flux of the floc reinforced hollow fiber membrane is 35L / m 2 h, running for 32 minutes, when the pressure of the negative pressure gauge exceeds 50kPa.

[0051] (5) When the pressure of the negative pressure gauge exceeds 50kPa, it starts to en...

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Abstract

The invention relates to a separation method for sewage treatment through a floc reinforced hollow fiber membrane and a separation device for the sewage treatment through the floc reinforced hollow fiber membrane, wherein the floc reinforced hollow fiber membrane serves as a filtration membrane. Under the low aeration, sludge forms a floc membrane on a net structure with flocs on the surface of the floc reinforced hollow fiber membrane through low negative pressure, so as to separate the sludge from water in sewage, and the produced water flows into an ultra-filtration membrane or micro-filtration membrane of the floc reinforced hollow fiber to be filtered. When the floc membrane is aged, the floc membrane on the floc reinforced hollow fiber membrane can be shaken off through high aeration in a short time. Compared with the existing MBR (membrane biological reactor) technology, the operating flux of the membrane is improved, the operating cost and the pollution of the membrane are greatly reduced, and the aeration energy consumption is almost negligible. Compared with a CMF (continuous membrane filtration) technique, the occupied area can be greatly reduced, and the sludge concentration in an aerobiotic pool can be improved.

Description

technical field [0001] The invention relates to a separation method and a device for treating sewage with a floc reinforced hollow fiber membrane, and belongs to the technical field of water treatment membranes. Background technique [0002] After the 1950s, the global population grew rapidly and industry developed rapidly. The situation of global water resources is rapidly deteriorating, and the water crisis is becoming more and more serious. In order to alleviate the shortage of water resources, sewage treatment and reuse are imperative, and membrane treatment of sewage has become the main trend of sewage treatment. [0003] Hollow fiber membrane is an important membrane form in the application of modern membrane technology. It has the characteristics of high packing density, small volume, high treatment efficiency and simple production process. It has been widely used in industrial wastewater treatment and domestic sewage recycling at home and abroad. Use it in many way...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/02C02F1/44
Inventor 陈亦力文剑平李锁定代攀吴强
Owner BEIJING ORIGIN WATER FILM TECH