CN201505512U - Gas-water mixing cleaning device for an immersion type hollow fiber membrane module - Google Patents

Gas-water mixing cleaning device for an immersion type hollow fiber membrane module Download PDF

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Publication number
CN201505512U
CN201505512U CN2009200561250U CN200920056125U CN201505512U CN 201505512 U CN201505512 U CN 201505512U CN 2009200561250 U CN2009200561250 U CN 2009200561250U CN 200920056125 U CN200920056125 U CN 200920056125U CN 201505512 U CN201505512 U CN 201505512U
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CN
China
Prior art keywords
membrane module
cleaning device
water
fiber membrane
hollow fiber
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Expired - Lifetime
Application number
CN2009200561250U
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Chinese (zh)
Inventor
葛海霖
洪建春
伍运佶
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Memstar Guangzhou Co Ltd
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Memstar Guangzhou Co Ltd
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Priority to CN2009200561250U priority Critical patent/CN201505512U/en
Application granted granted Critical
Publication of CN201505512U publication Critical patent/CN201505512U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a gas-water mixing cleaning device for an immersion type hollow fiber membrane module, comprising a fiber membrane module immersed in a water box, wherein the cleaning device is an immersion type cleaning device and a stud type external pressure hollow fiber membrane module is used and an upper end water outlet of the fiber membrane module and a lower end water outlet are connected with a suction pump by a pressure meter and a control valve through a water collection tube and a lower end lateral air inlet of the fiber membrane module is connected with an air compressor by the control valve and the pressure meter through an aeration pipe and an upper end side port of the fiber membrane module is connected with the circulation pump by a circulation water pipe and the control valve. The gas liquid kinetic energy is completely changed into the mechanical energy of the membrane silk vibration, membrane pollution is effectively decelerated, the membrane cleaning period is prolonged and the run of the circulation pump increases the cross-flow speed of the membrane surface, strengthens the power of the fluid flowing, quickens the ascending speed of the fluid, intensifies the gas water circulation, performs good flushing on the surface of the membrane silk, prevents the concentration polarization on the inner membrane surface of the membrane module.

Description

A kind of air water mixing cleaning device that is used for the immersion hollow fiber film assembly
Technical field
The utility model relates to a kind of water treatment facilities, specifically is a kind of air water mixing cleaning device that is used for the immersion hollow fiber film assembly.
Background technology
The immersion hollow fiber membrane device is generally curtain type film assembly and the hollow-fibre membrane silk is in vertical distribution, and the immersion hollow fiber membrane device generally is used for MBR technology, and MBR is divided into external and two kinds of structures of integral type.External MBR adopts the hollow fiber film assembly of band shell, adopts the external MBR technology of gas-water mixed type, forms biphase gas and liquid flow in membrane module, makes biphase gas and liquid flow flow through film silk surface fast, improves the cross-flow rate on film surface, prevents that effectively film from polluting.But this is designed to monolateral water inlet, and water distribution is inhomogeneous, and non-immersion structure, limited by floor space.
Integral type MBR structure generally adopts uncanned curtain type film assembly or the hollow-fibre membrane silk is in vertical distribution, but the defective of this design is no shell, can cause mechanical damage to the film silk, cause air-flow to disperse during air purge easily, can't fully vibrate the film silk, chemical agent spreads easily during chemical backwash, reduce the effect of chemical backwash, and above design membrane flux is low, and cleaning performance is poor, will accelerate film and pollute speed.
Integral type MBR structure also has the membrane module that adopts the band shell, and it can be directly installed in the processed water body, and its operation method comprises: 1, duty, backwash state, bubble are cleaned state, blowdown state; 2, duty, backwash add bubble scouring state, bubble is cleaned state, blowdown state; 3, duty, chemical backwash state, bubble are cleaned state, blowdown state.This design can reduce cost of investment, but owing to do not have air in working order the time and flow, fails to continue the film silk to be shaken the generation of decelerating membrane pollution.But this device relies on the difference in height of inside and outside mixed liquor to accelerate the cross-flow rate on film silk surface as the power that circulates in the membrane module, because the difference in height of the inside and outside mixed liquor of membrane module is basically less than 3 meters hydraulic pressure, if long-time running, the concentration polarization on film silk surface will be very serious, thereby influence membrane flux and accelerate the film pollution.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of air water mixing cleaning device that is used for the immersion hollow fiber film assembly
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of air water mixing cleaning device that is used for the immersion hollow fiber film assembly, comprise the fiber film component that is immersed in the water tank, described cleaning device is the immersion cleaning device, adopt pillar external pressure hollow fiber film assembly, the upper end delivery port of this fiber film component and lower end delivery port are connected with suction pump with control valve through Pressure gauge by collector pipe, the lower end sidepiece air inlet of fiber film component is connected with air compressor with Pressure gauge through control valve by aeration tube, and fiber film component upper end side mouth is connected with circulating pump through circulating water pipeline and control valve.
The beneficial effects of the utility model are: this design makes gas-liquid kinetic energy be converted to the mechanical energy of film silk vibration fully, and the generation of decelerating membrane pollution effectively prolongs the film cleaning frequency; And the operation of circulating pump, improve the cross-flow rate on film surface, strengthen the power of liquid flow, the flow velocity that accelerating liquid rises, air water circulation aggravation is carried out good washing away to film silk surface, prevents the concentration polarization of membrane module intimal surface; And installation and convenient can directly be placed in the pending water body, need not to provide in addition the fabricating yard, add the existence of shell, chemical agent can be stored in the membrane module when carrying out chemical backwash, reduces the consumption of chemical agent and makes chemical agent be difficult for spreading out; Effectively avoid the mechanical damage of film silk.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
The specific embodiment
With reference to Fig. 1, a kind of air water mixing cleaning device that is used for the immersion hollow fiber film assembly, comprise the fiber film component 1 that is immersed in the water tank 3, the periphery of fiber film component 1 shell 2 lower ends is provided with a plurality of water inlets 14, it is characterized in that: the upper end delivery port 11 of described fiber film component 1 and lower end delivery port 11 ' are connected with suction pump 17 with control valve 9 through Pressure gauge 7 by collector pipe 4, the lower end sidepiece air inlet 12 of fiber film component 1 is connected with air compressor 18 with Pressure gauge 8 through control valve 10 by aeration tube 5, and fiber film component 1 upper end side mouth 13 is connected with circulating pump 16 through circulating water pipeline 6 and control valve 15.
Technical process of the present utility model is: fiber film component 1 is immersed in the water tank 3 fully, water evenly enters membrane module by the many water inlets 14 on fiber film component 1 shell 2, open control valve 10, blast compressed air from membrane module air inlet 12, compressed air forms the multi beam air-flow, outer wall to the film silk of One's name is legion carries out sufficient air vibration and bubble scouring, the existence of air water immixture simultaneously, gas-liquid is fully mixed, form biphase gas and liquid flow, the turbulent fluctuation of gas and liquid mixture in putamina makes the kinetic energy of gas-liquid be converted to the mechanical energy that the film silk vibrates fully.The upper end cross-flow outlet 13 of circulating pump 16 incoming fiber membrane modules 1, opening controlling valve 15 is accelerated the waterpower circulation in the fiber film component 1, and the gas-liquid high velocity stream is crossed face, makes film silk surface have bigger crossflow velocity, avoids the concentration polarization of film silk outer surface effectively.Under the swabbing action of suction pump 17, opening controlling valve 9, control fiber film component 1 moves under the operating pressure of 0.008~0.03MPa, former water penetrates into the film silk, being filtered thing is filtered fully, clear liquid after the filtration is along the internal flow of film silk, from the delivery port 11 or the 11 ' outflow of membrane module.
Below exemplify several examples effect of the present utility model is described.
Embodiment 1: sewage is taken from the sewage of certain Sewage Plant, and its composition about 70% is a dyeing waste water, and all the other are sanitary sewage, treating capacity 3000m 3/ d, water inlet CODcr is 700~1000, BOD 5Be 200~300, SS is 150~200, and ammonia nitrogen is between 80~120, turbidity is 30~150, after the air water mixing cleaning device of immersion hollow fiber film assembly moves processing in the MBR mode, and the clearance height of pollutant, the COD average removal rate is 95%, is lower than 50mg/l all the time, and the ammonia nitrogen average removal rate is 97%, delivery turbidity is less than 0.1NTU, and energy consumption is 0.65KWh/m3, and system adopts the intermittent duty mode, suction 20min, stop 1min, constant current control, membrane flux is controlled at 25l/m 2H moves 1 month, and transmembrane pressure rises to 12Kpa from 10Kpa, and the mould difference rises slowly, and is stable.
Embodiment 2: sewage is taken from certain waste water from plating plant, and its composition about 90% is an electroplating wastewater, and all the other are sanitary sewage, treating capacity 1000m 3/ d, COD are 300~500, and SS is 300~500, turbidity is 30~150, after the air water mixing cleaning device of immersion hollow fiber film assembly moves processing in the MCR mode, and the clearance height of pollutant, the COD average removal rate is 95%, is lower than 50mg/l all the time, and the SS average removal rate is 98%, delivery turbidity is less than 0.1NTU, and energy consumption is 0.50KWh/m3, and system adopts the intermittent duty mode, suction 20min, stop 1min, constant current control, membrane flux is controlled at 30l/m 2H moves 1 month, and transmembrane pressure rises to 10Kpa from 8Kpa, and the mould difference slowly rises, and is stable.
Embodiment 3: water quality treatment is certain river, for the somewhere provides high-quality direct drinking, raw water turbidity is 20~120, after the air water mixing cleaning device of immersion hollow fiber film assembly moves processing in immersion ultrafiltration mode, the clearance height of pollutant, delivery turbidity is less than 0.1NTU, and energy consumption is 0.50KWh/m3, and system adopts the intermittent duty mode, suction 20min, stop 1min, constant current control, membrane flux is controlled at 40l/m 2H moves 40 days continuously, and transmembrane pressure rises to 10Kpa from 8Kpa, and the mould difference slowly rises, and is stable.
This design makes gas-liquid kinetic energy be converted to the mechanical energy of film silk vibration fully, and the generation of decelerating membrane pollution effectively prolongs the film cleaning frequency; And the operation of circulating pump, improve the cross-flow rate on film surface, strengthen the power of liquid flow, the flow velocity that accelerating liquid rises, air water circulation aggravation is carried out good washing away to film silk surface, prevents the concentration polarization of membrane module intimal surface; And installation and convenient can directly be placed in the pending water body, need not to provide in addition the fabricating yard, add the existence of shell, chemical agent can be stored in the membrane module when carrying out chemical backwash, reduces the consumption of chemical agent and makes chemical agent be difficult for spreading out; Effectively avoid the mechanical damage of film silk.

Claims (2)

1. air water mixing cleaning device that is used for the immersion hollow fiber film assembly, comprise the fiber film component (1) that is immersed in the water tank (3), it is characterized in that: described cleaning device is the immersion cleaning device, adopt pillar external pressure hollow fiber film assembly, upper end delivery port (11) of this fiber film component (1) and lower end delivery port (11 ') are connected with suction pump (17) with control valve (9) through Pressure gauge (7) by collector pipe (4), the lower end sidepiece air inlet (12) of fiber film component (1) is connected with air compressor (18) with Pressure gauge (8) through control valve (10) by aeration tube (5), and fiber film component (1) upper end side mouth (13) is connected with circulating pump (16) through circulating water pipeline (6) and control valve (15).
2. the air water mixing cleaning device of immersion hollow fiber film assembly according to claim 1 is characterized in that the shell (2) of described hollow fiber film assembly (1), and the periphery of described shell (2) lower end is provided with a plurality of water inlets (14).
CN2009200561250U 2009-05-07 2009-05-07 Gas-water mixing cleaning device for an immersion type hollow fiber membrane module Expired - Lifetime CN201505512U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200561250U CN201505512U (en) 2009-05-07 2009-05-07 Gas-water mixing cleaning device for an immersion type hollow fiber membrane module

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Application Number Priority Date Filing Date Title
CN2009200561250U CN201505512U (en) 2009-05-07 2009-05-07 Gas-water mixing cleaning device for an immersion type hollow fiber membrane module

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102068911A (en) * 2010-09-29 2011-05-25 苏州顶裕节能设备有限公司 Device for rinsing membrane yarns of hollow fiber membranes
CN105536542A (en) * 2015-12-14 2016-05-04 广东创源节能环保有限公司 Gas-ejecting self-cleaning type roll membrane filtration apparatus and gas permeation rate detection method using filtration apparatus
CN105668775A (en) * 2016-01-14 2016-06-15 广州市广深环保科技有限公司 Automatic off-line MBR membrane bioreactor with air and water combined flushing
CN110342658A (en) * 2018-04-03 2019-10-18 青岛海尔智能技术研发有限公司 Gas, which is wiped, rinses water purifier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102068911A (en) * 2010-09-29 2011-05-25 苏州顶裕节能设备有限公司 Device for rinsing membrane yarns of hollow fiber membranes
CN105536542A (en) * 2015-12-14 2016-05-04 广东创源节能环保有限公司 Gas-ejecting self-cleaning type roll membrane filtration apparatus and gas permeation rate detection method using filtration apparatus
CN105668775A (en) * 2016-01-14 2016-06-15 广州市广深环保科技有限公司 Automatic off-line MBR membrane bioreactor with air and water combined flushing
CN105668775B (en) * 2016-01-14 2018-05-01 广州市广深环保科技有限公司 The MBR membrane bioreactors that a kind of automatic offline air water joint is rinsed
CN110342658A (en) * 2018-04-03 2019-10-18 青岛海尔智能技术研发有限公司 Gas, which is wiped, rinses water purifier

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C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Mianyang Midea Material Technology Co.,Ltd.

Assignor: Guangzhou Meineng Materials Technology Co., Ltd.

Contract record no.: 2012440000168

Denomination of utility model: Gas-water mixing cleaning device for an immersion type hollow fiber membrane module

Granted publication date: 20100616

License type: Exclusive License

Record date: 20120413

EC01 Cancellation of recordation of patent licensing contract

Assignee: Mianyang Midea Material Technology Co.,Ltd.

Assignor: Guangzhou Meineng Materials Technology Co., Ltd.

Contract record no.: 2012440000168

Date of cancellation: 20151224

EE01 Entry into force of recordation of patent licensing contract

Assignee: HUAWEI TECHNOLOGIES CO., LTD.

Assignor: Guangzhou Meineng Materials Technology Co., Ltd.

Contract record no.: 2015440000880

Denomination of utility model: Gas-water mixing cleaning device for an immersion type hollow fiber membrane module

Granted publication date: 20100616

License type: Common License

Record date: 20151225

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100616