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Forward osmosis membrane bioreactor with magnetic nanoparticles serving as driving liquid

A technology of magnetic nanoparticles and bioreactors, applied in chemical instruments and methods, magnetic field/electric field water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as reducing the effect of sewage treatment, avoid inhibition, Low energy consumption and stable effect

Active Publication Date: 2012-11-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the existing forward osmosis membrane bioreactor uses inorganic salt as the driving liquid, and the reverse osmosis of the salt solution into the bioreactor has an inhibitory effect on microorganisms, thereby reducing the treatment effect of sewage. Forward Osmosis Membrane Bioreactor

Method used

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  • Forward osmosis membrane bioreactor with magnetic nanoparticles serving as driving liquid

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine figure 1 Describe this embodiment, the forward osmosis membrane bioreactor using magnetic nanoparticles as the driving liquid in this embodiment includes a liquid storage tank 1, an inlet pump 2, a first inlet valve 3, an aeration pipe 4, a biological reaction tank 5, a drain Mud valve 6, forward osmosis membrane 7, driving liquid pool 8, second water inlet valve 9, third water inlet valve 10, first liquid storage tank 11, second liquid storage tank 12, first electromagnetic field 13, second electromagnetic field 14. The first drain valve 15, the second drain valve 16, the first backflow valve 17, the second backflow valve 18 and the pump 19, the liquid storage tank 1 communicates with the bioreactor 5 through the water inlet pump 2 and the first water inlet valve 3 , the bottom of the biological reaction tank 5 is provided with an aeration pipe 4, and the middle part of the biological reaction tank 5 is provided with a sludge d...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination figure 1 Describe this embodiment, the water quality parameter of the sewage that this embodiment enters bioreactor 5 is: chemical oxygen demand (COD) is 100~700mg / L, ammonia nitrogen concentration (NH 4 + -N) is 10~50mg / L, suspended solids concentration (SS) is 20~100mg / L, phosphate concentration (PO 4 3- P) is 1 to 10 mg / L. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0020] Specific implementation mode three: combination figure 1 This embodiment will be described. The aeration pipe 4 in this embodiment is externally connected to an aeration system. Other compositions and connections are the same as in the first embodiment.

[0021] Specific implementation mode four: combination figure 1 To illustrate this embodiment, the forward osmosis membrane 7 in this embodiment is placed in such a way that the active layer faces the draw solution pool 8 or the active layer faces the biological reaction pool 5 . Other compositions and connections are the same as in the first embodiment.

[0022] Specific implementation mode five: combination figure 1 Illustrate present embodiment, forward osmosis membrane 7 fronts described in this embodiment are also provided with aeration pipe, the aeration rate of forward osmosis membrane 7 front aeration pipes and the aeration rate ratio of biological reaction tank 5 bottom aeration pipes are 3 ~5:1. Other com...

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Abstract

The invention discloses a forward osmosis membrane bioreactor with magnetic nanoparticles serving as driving liquid and relates to a forward osmosis membrane bioreactor. The forward osmosis membrane bioreactor mainly solves the problems that existing forward osmosis membrane bioreactors uses inorganic salt as the driving liquid, and a salt solution osmoses into the bioreactor and has an inhibitory effect on microorganism, so that the sewage treatment effect is reduced. The bioreactor comprises a liquid storage pot, a water inlet pump, a first water inlet valve, an aerator pipe, a biological reaction tank, a mud valve, a forward osmosis membrane, a driving liquid tank, a second water inlet valve, a third water inlet valve, a first liquid storage tank, a second liquid storage tank, a first electromagnetic field, a second electromagnetic field, a first water drainage valve, a second water drainage valve, a first backflow valve, a second backflow valve and a pump, wherein the liquid storage tank is connected with the biological reaction tank through the water inlet pump and the first water inlet valve, the aerator pipe and the mud valve are arranged on the biological reaction tank, the forward osmosis membrane is connected between the biological reaction tank and the driving liquid, and the driving liquid is filled in the driving liquid tank. The forward osmosis membrane bioreactor is applied to the field of sewage treatment.

Description

technical field [0001] The invention relates to a forward osmosis membrane bioreactor. Background technique [0002] With the rapid increase of population, the demand for water has increased, and at the same time, the rapid economic development has made the problem of pollution more and more serious, resulting in the scarcity of available fresh water resources. Therefore, the reuse of sewage is a better choice, which can alleviate the lack of fresh water to a large extent. The membrane bioreactor (MBR) integrates the biological treatment of the bioreactor and the separation of the membrane, and realizes the complete separation of the hydraulic retention time (HRT) and the sludge retention time (SRT). Simple, good effluent quality, can be directly reused and other advantages. In addition, the National Twelfth Five-Year Plan proposes to reduce sludge discharge. As a typical metabolic balance process, MBR has a remarkable effect in sludge reduction, and the sludge discharge i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/48
Inventor 田禹李志能陈琳
Owner HARBIN INST OF TECH
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