CN206645887U - A kind of modified rice husk ultrafiltration membrane bioreactor coupling device - Google Patents

A kind of modified rice husk ultrafiltration membrane bioreactor coupling device Download PDF

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CN206645887U
CN206645887U CN201720426301.XU CN201720426301U CN206645887U CN 206645887 U CN206645887 U CN 206645887U CN 201720426301 U CN201720426301 U CN 201720426301U CN 206645887 U CN206645887 U CN 206645887U
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water
membrane
sludge
ultrafiltration
pump
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孙楠
刘丹彤
李佳瑞
侯钦耀
王兴敏
邓晓慧
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Northeast Agricultural University
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Northeast Agricultural University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

A kind of modified rice husk ultrafiltration membrane bioreactor coupling device, it is related to a kind of low-temperature and low turbidity Gao Segao ammonia nitrogens the water treatment device.The purpose of this utility model is that to solve the problems, such as that existing processing low-temperature and low turbidity Gao Segao ammonia nitrogens water source water installations have installation area larger.The equipment is made up of water inlet system, coagulation system, membrane bio-reaction system, outlet system, backwashing system, sludge drainage system, sludge recirculation system and robot control system(RCS)；Treatment sewage enters coagulation system by water inlet system, then overflow enters membrane bio-reaction system, enters outlet system by membrane bio-reaction system；Sludge drainage system discharges to sludge caused by membrane bio-reaction system；Sludge reflux caused by membrane bio-reaction system is entered coagulation system by sludge recirculation system；Robot control system(RCS) controls outlet system and backwashing system switch；Backwashing system backwashes to ultrafiltration UF membrane modules.The utility model is used for low-temperature and low turbidity Gao Segao ammonia nitrogen the water treatments.

Description

A kind of modified rice husk-ultrafiltration membrane bioreactor coupling device
Technical field
It the utility model is related to a kind of low-temperature and low turbidity Gao Segao ammonia nitrogens the water treatment device.
Background technology
In recent years, membrane technology is widely used to water treatment field, wherein, micro-filtration/ultrafiltration (MF/UF) film is used for running water Production development is especially rapid.With the decline of film price, it is expected to substitute coagulation, precipitation sand filtration, sterilization etc. routinely to drink aquatic Production. art, turn into one of most important technological innovation of water treatment field.Membrane bioreactor (Membrane Bioreactor, MBR the advantages of) active sludge is incomparable, such as to suspended solid material, larger molecular organicses and microorganism in water Have that good removal effect, technological process are short, floor space is few, sludge concentration is high, excess sludge production is few, it is complete to be easily achieved Deng Automatic operating management etc., but MBR is there is also deficiency, such as to microbial metabolic products, bacterium and dissolved organic matter (DOM) It is very limited Deng removal ability, easily cause fouling membrane.Fouling membrane be restrict UF-MBR technique popularization and application bottleneck, its controlling party Method is concentrated mainly in terms of improving into water pretreatment, membrane material exploitation, mud mixed liquid characteristic with optimization of operating condition 4, wherein It is one of study hotspot of fouling membrane in recent years that mud mixed liquid characteristic, which improves, based on the advantages such as quick, easy manipulation, multidirectional MBR The fillers such as middle addition suspension, particulate vector (activated carbon, zeolite, flyash, plastic grain) or flocculant alleviate fouling membrane, carry The treatment effeciency of high system, but problems with terms of control membrane fouling be present：1. suspension or particulate vector circulate in MBR In the presence of the potentiality on damage film surface during flowing；2. the addition of coagulant is easily negatively affected to the activity of microbiologic population； 3. powder filler often uses Powdered Activated Carbon (PAC), but the drawbacks such as price is high, bio-regeneration is difficult make MBR by cost constraint and Limit its application.
Existing coagulation-membrane biological reaction technique is biological for coagulation and film simply by coagulation and UF membrane simple combination When reactor is respectively the split type combination of two separate units, installation area is larger, while the relatively big flocculating body that coagulation is formed It is broken by easily occurring during transmission pipeline, influence the performance of coagulation；Because of the mix stages and flocculated stage water of coagulating Power condition imperfection and make that mixed flocculation effect is undesirable, dosage of PAC is larger, while because coagulation is insufficient, it is difficult to have The fine flco or colloid concentration of effect coagulation gradually increase, and are easily caused fouling membrane, influence membrane flux and membrane lifetime, in the prior art Also without the device that can solve problems.
Utility model content
The purpose of this utility model is that to solve existing processing low-temperature and low turbidity Gao Segao ammonia nitrogens water source water installations to have device The problem of floor space is larger, and a kind of modified rice husk-ultrafiltration membrane bioreactor coupling device is provided.
A kind of modified rice husk-ultrafiltration membrane bioreactor coupling device, it is by water inlet system, coagulation system, membrane bioreaction Answer system, outlet system, backwashing system, sludge drainage system, sludge recirculation system and robot control system(RCS) composition；
Described water inlet system includes intake pool, intake pump, feed water flow gauge and water inlet control valve door；
Described coagulation system includes coagulating basin, agitator, enters medicine-chest, coagulant dosage pump and coagulant flow gauge； Agitator is set in coagulating basin；
Described membrane bio-reaction system including filler add case, membrane bioreactor, ultrafiltration UF membrane modules, aeration tube, Aeration pump, overflow pipe, fluid level controller and filler；The ultrafiltration UF membrane modules are vacantly arranged in membrane bioreactor；It is described Aeration tube is arranged on below ultrafiltration UF membrane modules, one end connection aeration pump of aeration tube；
Described outlet system includes water outlet-backwash and shares pressure gauge, water solenoid valve I, the shared water of water outlet-backwash Pump, water solenoid valve II, water flow meter and discharge bay；
Described backwashing system include backwashing solenoid valve I, water outlet-backwash share water pump, backwashing solenoid valve II, Water outlet-backwash shares pressure gauge and backwash flowmeter；
Described sludge drainage system includes sludge pump, spoil disposal valve and sludge-tank；
Described sludge recirculation system includes sludge pump and sludge reflux valve；
Described robot control system(RCS) includes programmable logic controller (PLC), fluid level controller, coagulant flow gauge, water outlet-recoil Wash shared pressure gauge, water solenoid valve I, the shared water pump of water outlet-backwash, water solenoid valve II, water flow meter, backwash electricity Magnet valve I, backwashing solenoid valve II, backwash flowmeter and feed water flow gauge；
The coagulating basin is separated with membrane bioreactor by overflow wall, and overflow wall is highly less than coagulating basin and film biology Other side walls of reactor；
The fluid level controller is vacantly arranged on above ultrafiltration UF membrane modules, and the pointer end height of fluid level controller is high In ultrafiltration UF membrane module water outlet heights, less than overflow wall height；
Overfall is set in the side wall of membrane bioreactor non-overflow wall, and the height of overfall is high less than overflow wall Degree, higher than the pointer end height of fluid level controller, overfall connects with one end of overflow pipe, the other end and sludge of overflow pipe Pond connects；
Treatment sewage enters coagulation system by water inlet system, then enters membrane bio-reaction system by overflow, processing Sewage afterwards enters outlet system by membrane bio-reaction system；
Sludge caused by membrane bio-reaction system is discharged by sludge drainage system；
Sludge reflux caused by membrane bio-reaction system is entered by coagulation system by sludge recirculation system；
Outlet system and backwashing system is controlled to switch by robot control system(RCS)；
Ultrafiltration UF membrane modules in membrane bio-reaction system are backwashed by backwashing system.
The utility model advantage：
1st, coagulating basin and membrane bioreactor unitary design, water pump is shared using water outlet-backwash, reduces plant area Area.
2nd, front end sets coagulating basin, and dosing coagulant is to remove larger molecular organicses.Avoid because macromolecular is organic in water The problem of thing etc. is attached to film surface, and backwash workload is big.
3rd, there is provided sludge recirculation system, coagulation agent content is reduced using sludge reflux, slows down the suppression to biology；Avoid Excessive coagulant causes Biostatic into membrane bioreactor and reduces removal effect of the activated sludge to ammonia nitrogen.
Water outlet-backwash shares water pump and continuously run when the 4th, sharing water pump, water outlet and recoil, reduces normally on and normally off to water pump Loss.
Brief description of the drawings
Fig. 1 is modified rice husk described in the utility model-ultrafiltration membrane bioreactor coupling mechanism structure schematic diagram.
Embodiment
Embodiment one：With reference to Fig. 1, present embodiment is a kind of modified rice husk-ultrafiltration membrane bioreactor coupling Device, it is returned by water inlet system, coagulation system, membrane bio-reaction system, outlet system, backwashing system, sludge drainage system, sludge Streaming system and robot control system(RCS) composition；
Described water inlet system includes intake pool 1, intake pump 2, feed water flow gauge 3 and water inlet control valve door 4；
Described coagulation system includes coagulating basin 5, agitator 6, enters medicine-chest 7, coagulant dosage pump 8 and coagulant flow gauge 31；Agitator 6 is set in coagulating basin 5；
Described membrane bio-reaction system adds case 9, membrane bioreactor 10, ultrafiltration UF membrane modules 11, exposure including filler Tracheae 12, aeration pump 13, overflow pipe 14, fluid level controller 26 and filler 30；The ultrafiltration UF membrane modules 11 are vacantly arranged on film In bioreactor 10；The aeration tube 12 is arranged on the lower section of ultrafiltration UF membrane modules 11, one end connection aeration pump of aeration tube 12 13；
Described outlet system is common including the shared pressure gauge 15 of water outlet-backwash, water solenoid valve I 16, water outlet-backwash With water pump 17, water solenoid valve II 18, water flow meter 19 and discharge bay 20；
Described backwashing system includes backwashing solenoid valve I 21, water outlet-backwash shares water pump 17, backwash electromagnetism Valve II 22, water outlet-backwash share pressure gauge 15 and backwash flowmeter 23；
Described sludge drainage system includes sludge pump 25, spoil disposal valve 29 and sludge-tank 27；
Described sludge recirculation system includes sludge pump 25 and sludge reflux valve 28；
Described robot control system(RCS) includes programmable logic controller (PLC) 24, fluid level controller 26, coagulant flow gauge 31, gone out Water-backwash shares pressure gauge 15, water solenoid valve I 16, the shared water pump 17 of water outlet-backwash, water solenoid valve II 18, water outlet Flowmeter 19, backwashing solenoid valve I 21, backwashing solenoid valve II 22, backwash flowmeter 23 and feed water flow gauge 3；
The coagulating basin 5 is separated with membrane bioreactor 10 by overflow wall, and overflow wall is highly less than coagulating basin 5 and film Other side walls of bioreactor 10；
The fluid level controller 26 is vacantly arranged on the top of ultrafiltration UF membrane modules 11, and the pointer end of fluid level controller 26 Highly it is higher than the water outlet height of ultrafiltration UF membrane modules 11, less than overflow wall height；
Overfall is set in the side wall of the non-overflow wall of membrane bioreactor 10, and the height of overfall is high less than overflow wall Degree, higher than the pointer end height of fluid level controller 26, overfall connects with one end of overflow pipe 14, the other end of overflow pipe 14 Connected with sludge-tank 27；
Treatment sewage enters coagulation system by water inlet system, then enters membrane bio-reaction system by overflow, processing Sewage afterwards enters outlet system by membrane bio-reaction system；
Sludge caused by membrane bio-reaction system is discharged by sludge drainage system；
Sludge reflux caused by membrane bio-reaction system is entered by coagulation system by sludge recirculation system；
Outlet system and backwashing system is controlled to switch by robot control system(RCS)；
Ultrafiltration UF membrane modules 11 in membrane bio-reaction system are backwashed by backwashing system.
Sewage in coagulating basin 5 described in present embodiment after coagulation enters film from the overflow of coagulating basin 5 by overflow wall and given birth to In thing reactor 10.
For present embodiment when the pointer of liquid contact liquid level sensor 26 in membrane bioreactor 10, this signal is by liquid level Sensor 26 input programmable logic controller (PLC) 24, now programmable logic controller (PLC) 24 control water solenoid valve I 16, water outlet- Backwash shares water pump 17 and water solenoid valve II 18 is opened.
Ultrafiltration UF membrane modules 11 described in present embodiment are middle Kynoar hollow fiber curtain type film assembly, by Tianjin film Its Science and Technology Co., Ltd. produces, and its pH scope is 2~10；Permission operating pressure is 0.01MPa~0.05MPa；Membrane aperture 0.02 μm~0.2 μm；400 μm~450 μm of external diameter, 320 μm~350 μm of internal diameter；Film size 80cm × 1000 piece；It retains molecule Measure as 60000~100000；Porosity is 40%~50%.
Fig. 1 is modified rice husk described in the utility model-ultrafiltration membrane bioreactor coupling mechanism structure schematic diagram, in figure 1 represents intake pool；2 represent intake pump；3 represent feed water flow gauge；4 represent water inlet control valve door；5 represent coagulating basin；6 represent to stir Mix device；7 represent into medicine-chest；8 represent coagulant dosage pump；9 expression fillers add case；10 represent membrane bioreactor；11 represent Ultrafiltration UF membrane modules；12 represent aeration tube；13 represent aeration pump；14 represent overflow pipe；15 represent that water outlet-backwash shares pressure Table；16 represent water solenoid valve I；17 represent that water outlet-backwash shares water pump；18 represent water solenoid valve II；19 represent water outlet Flowmeter；20 represent discharge bay；21 represent backwashing solenoid valve I；22 represent backwashing solenoid valve II；23 represent backwash flow Meter；24 represent programmable logic controller (PLC)；25 represent sludge pump；26 represent fluid level controller；27 represent sludge-tank；28 represent dirty Mud return valve；29 represent spoil disposal valve；30 represent filler；31 represent coagulant flow gauge.
The utility model is attempted high concentration modification rice husk being added in UF-MBR, forms modified rice husk-UF-MBR combinations Technique, research UF-MBR, the modified parallel systems of rice husk-UF-MBR two are to the scavenging effect of low temperature Gao Segao ammonia nitrogen source waters, anti- Activated sludge performance and fouling membrane situation in device are answered, investigates the mechanism of action and efficiency of modified rice husk, it is high to explore processing low temperature The high ammonia nitrogen source water of color or the new method for effectively slowing down MBR fouling membranes, and the popularization and application for modified rice husk-UF-MBR provide skill Art is supported.
Amorphous hydrated silica content is 15%~20% in rice husk, and other main components are hydrocarbon.Rice Shell has the characteristics that silicone content is big, porous capacity is small, quality is coarse, and the activated carbon of production has by force to a variety of organic compounds Adsorption capacity, and objectionable impurities (such as lead, arsenic) is not contained, available for a variety of industries such as water process, there is huge market potential, Rice husk raw material activated carbon product cost that is sufficient, cheap, thus producing is low, had not only saved the energy but also had realized waste resource Change, meet sustainable development requirement, there is larger practical value and application prospect.
Slow down the feasibility of Proof-Of Principle modification rice husk-UF-MBR group technologies based on fouling membrane：Modified rice husk-UF-MBR Group technology integrates the strong suction-operated for being modified rice husk, MBR biodegradation and the efficient crown_interception of film, its semilate rice Based active carbon has huge specific surface area and flourishing pore structure is easy to adsorption and enrichment organic matter, while is also microorganism The good carrier of apposition growth so that the bioactivity of whole system is high, stability is strong；Modified rice husk absorbed portion microorganism Extracellular polymeric, film surface formed cake layer, can effectively decelerating membrane pollution and cross mould poor (TMP) growth rate, There is protective effect to membrane module.Therefore it is modified adding there is a possibility that the performance of activated sludge is changed in reactor for rice husk It is kind, increase film water flux, effective decelerating membrane pollution makes the effluent quality of UF-MBR systems be improved, pollutant is gone Except efficiency is more reliable and more stable, the ability of system attack impact load is improved.
Precipitating sludge in membrane bioreactor 10 is back to coagulating basin 5, can improve the coagulation effect of low-cloudy water；In addition, Adsorb a large amount of ammonia nitrogens, the modification rice husk of organic matter can be used as fertilizer, be current environment green new and high technology using renewable resource Development trend；65,000,000 tons of stalks and 80,000,000 tons of animal dungs (cause Gao Segao ammonia nitrogens caused by Heilongjiang Province rural is annual Water quality major reason) need to be effectively addressed.
Embodiment two：With reference to Fig. 1, the difference of present embodiment and embodiment one is：Pending dirt Water is stored in intake pool 1, is sent into treatment sewage by feed water flow gauge 3 and water inlet control valve door 4 using intake pump 2 mixed In solidifying pond 5.Other are identical with embodiment one.
Embodiment three：With reference to Fig. 1, present embodiment is with one of embodiment one or two difference：It is mixed Solidifying agent is stored in into medicine-chest 7, is sent into coagulant in coagulating basin 5 by coagulant flow gauge 31 using coagulant dosage pump 8. Other are identical with embodiment one or two.
Embodiment four：With reference to Fig. 1, present embodiment is with one of embodiment one to three difference：Fill out Material 30 is stored in filler and added in case 9, and adding case 9 by filler is added to filler 30 in membrane bioreactor 10.Other with Embodiment one to three is identical.
Embodiment five：With reference to Fig. 1, present embodiment is with one of embodiment one to four difference：It is mixed Sewage in solidifying pond 5 after coagulation is entered in membrane bioreactor 10 by overflow wall from the overflow of coagulating basin 5.Other and specific reality It is identical to apply mode one to four.
Embodiment six：With reference to Fig. 1, present embodiment is with one of embodiment one to five difference：When In membrane bioreactor 10 during the pointer of liquid contact liquid level sensor 26, this signal inputs programmable patrol by liquid level sensor 26 Controller 24 is collected, now programmable logic controller (PLC) 24 controls water solenoid valve I 16, water outlet-backwash to share water pump 17 and go out Water solenoid valve II 18 is opened.Other are identical with embodiment one to five.
Embodiment seven：With reference to Fig. 1, present embodiment is with one of embodiment one to six difference： The bottom mud mouth of membrane bioreactor 10 is connected by sludge pump 25 and spoil disposal valve 29 with sludge-tank 27, in membrane bioreactor 10 bottom mud mouths are connected by sludge pump 25 and sludge reflux valve 28 with coagulating basin 5.Other with embodiment one to Six is identical.
Embodiment eight：With reference to Fig. 1, present embodiment is with one of embodiment one to seven difference：Place Sewage shares water pump by water solenoid valve I 16, water outlet-backwash successively by the delivery port of ultrafiltration UF membrane modules 11 after reason 17th, water solenoid valve II 18 and water flow meter 19 enter in discharge bay 20.Other are identical with embodiment one to seven.
Embodiment nine：With reference to Fig. 1, present embodiment is with one of embodiment one to eight difference：Instead During flushing, water solenoid valve I 16 and water solenoid valve II 18 are closed, and backwashing solenoid valve I 21 and backwashing solenoid valve II 22 are opened Open, sewage shares water pump 17, recoil by backwashing solenoid valve I 21, water outlet-backwash successively after the processing that discharge bay 20 is deposited Magnetic valve II 22 and backwash flowmeter 23 are washed, ultrafiltration UF membrane modules 11 are carried out instead by the delivery port of ultrafiltration UF membrane modules 11 Rinse.Other are identical with embodiment one to eight.
The utility model content is not limited only to the content of the respective embodiments described above, one of them or several embodiments Combination can also equally realize the purpose of invention.
Using following verification experimental verification the utility model effects
Embodiment 1：With reference to Fig. 1, a kind of modified rice husk-ultrafiltration membrane bioreactor coupling device, it is by water inlet system, mixed Solidifying system, membrane bio-reaction system, outlet system, backwashing system, sludge drainage system, sludge recirculation system and robot control system(RCS) group Into；
Described water inlet system includes intake pool 1, intake pump 2, feed water flow gauge 3 and water inlet control valve door 4；
Described coagulation system includes coagulating basin 5, agitator 6, enters medicine-chest 7, coagulant dosage pump 8 and coagulant flow gauge 31；Agitator 6 is set in coagulating basin 5；
Described membrane bio-reaction system adds case 9, membrane bioreactor 10, ultrafiltration UF membrane modules 11, exposure including filler Tracheae 12, aeration pump 13, overflow pipe 14, fluid level controller 26 and filler 30；The ultrafiltration UF membrane modules 11 are vacantly arranged on film In bioreactor 10；The aeration tube 12 is arranged on the lower section of ultrafiltration UF membrane modules 11, one end connection aeration pump of aeration tube 12 13；
Described outlet system is common including the shared pressure gauge 15 of water outlet-backwash, water solenoid valve I 16, water outlet-backwash With water pump 17, water solenoid valve II 18, water flow meter 19 and discharge bay 20；
Described backwashing system includes backwashing solenoid valve I 21, water outlet-backwash shares water pump 17, backwash electromagnetism Valve II 22, water outlet-backwash share pressure gauge 15 and backwash flowmeter 23；
Described sludge drainage system includes sludge pump 25, spoil disposal valve 29 and sludge-tank 27；
Described sludge recirculation system includes sludge pump 25 and sludge reflux valve 28；
Described robot control system(RCS) includes programmable logic controller (PLC) 24, fluid level controller 26, coagulant flow gauge 31, gone out Water-backwash shares pressure gauge 15, water solenoid valve I 16, the shared water pump 17 of water outlet-backwash, water solenoid valve II 18, water outlet Flowmeter 19, backwashing solenoid valve I 21, backwashing solenoid valve II 22, backwash flowmeter 23 and feed water flow gauge 3；
The coagulating basin 5 is separated with membrane bioreactor 10 by overflow wall, and overflow wall is highly less than coagulating basin 5 and film Other side walls of bioreactor 10；
The fluid level controller 26 is vacantly arranged on the top of ultrafiltration UF membrane modules 11, and the pointer end of fluid level controller 26 Highly it is higher than the water outlet height of ultrafiltration UF membrane modules 11, less than overflow wall height；
Overfall is set in the side wall of the non-overflow wall of membrane bioreactor 10, and the height of overfall is high less than overflow wall Degree, higher than the pointer end height of fluid level controller 26, overfall connects with one end of overflow pipe 14, the other end of overflow pipe 14 Connected with sludge-tank 27；
Treatment sewage enters coagulation system by water inlet system, then enters membrane bio-reaction system by overflow, processing Sewage afterwards enters outlet system by membrane bio-reaction system；
Sludge caused by membrane bio-reaction system is discharged by sludge drainage system；
Sludge reflux caused by membrane bio-reaction system is entered by coagulation system by sludge recirculation system；
Outlet system and backwashing system is controlled to switch by robot control system(RCS)；
Ultrafiltration UF membrane modules 11 in membrane bio-reaction system are backwashed by backwashing system.
Treatment sewage is stored in intake pool 1, by feed water flow gauge 3 and is entered treatment sewage using intake pump 2 Water control valve 4 is sent into coagulating basin 5.
Coagulant is stored in into medicine-chest 7, is sent into coagulant by coagulant flow gauge 31 using coagulant dosage pump 8 In coagulating basin 5.
Filler 30 is stored in filler and added in case 9, and add case 9 by filler is added to membrane bioreactor 10 by filler 30 In.
Sewage in coagulating basin 5 after coagulation is entered in membrane bioreactor 10 by overflow wall from the overflow of coagulating basin 5.
When the pointer of liquid contact liquid level sensor 26 in membrane bioreactor 10, this signal is defeated by liquid level sensor 26 Enter programmable logic controller (PLC) 24, now programmable logic controller (PLC) 24 controls water solenoid valve I 16, water outlet-backwash to share Water pump 17 and water solenoid valve II 18 are opened.
Connected in the bottom mud mouth of membrane bioreactor 10 by sludge pump 25 and spoil disposal valve 29 with sludge-tank 27, in film The bottom mud mouth of bioreactor 10 is connected by sludge pump 25 and sludge reflux valve 28 with coagulating basin 5.
Sewage is by the delivery ports of ultrafiltration UF membrane modules 11 after processing, successively by water solenoid valve I 16, water outlet-recoil Shared water pump 17, water solenoid valve II 18 and water flow meter 19 is washed to enter in discharge bay 20.
According to the feedback information of water flow meter 19, when water discharging time reaches 25min~30min, Programmable logical controller Device 24 controls water solenoid valve I 16 and water solenoid valve II 18 to close, while controls backwashing solenoid valve I 21 and backwash electromagnetism Valve II 22 is opened, and sewage shares water by backwashing solenoid valve I 21, water outlet-backwash successively after the processing that discharge bay 20 is deposited Pump 17, backwashing solenoid valve II 22 and backwash flowmeter 23, by the delivery port of ultrafiltration UF membrane modules 11 to ultrafiltration UF film groups Part 11 is backwashed.
Embodiment 2：With reference to Fig. 1, the high color of low-temperature and low turbidity is handled using modified rice husk-ultrafiltration membrane bioreactor coupling device The method of high ammonia nitrogen source water, is specifically realized by the following steps：
Startup stage：Using low-temperature and low turbidity Gao Segao ammonia nitrogens source water as treatment sewage, treatment sewage is added into film In bioreactor 10, ensure that the liquid level for the treatment of sewage is less than the pointer end of liquid level sensor 26, and flood ultrafiltration completely UF membrane modules 11, it is then 15000mg/L~20000mg/L inoculation of activated-sludge by activated sludge concentration, and is thrown by filler Add case 9 that filler 30 is added in membrane bioreactor 10, the filler 30 is modified rice hull active carbon, ensures membrane biological reaction Suspended sediment concentration is 20000mg/L~25000mg/L in device 10, starts aeration pump 13, is exposed using continuous aeration mode Gas, while intake pump 2, coagulant dosage pump 8, agitator 6 and programmable logic controller (PLC) 24 are opened, it will be treated using intake pump 2 Sewage is handled from intake pool 1, is sent into successively by feed water flow gauge 3 and water inlet control valve door 4 in coagulating basin 5, utilizes coagulant Pump 8 is added by coagulant from medicine-chest 7 is entered, is sent into coagulating basin 5 by coagulant flow gauge 31, is mixed using agitator 6, When the sewage after coagulation in coagulating basin 5 reaches overflow wall height, the sewage after coagulation is entered by overflow wall from the overflow of coagulating basin 5 In membrane bioreactor 10, small wadding grain is contained in the sewage after the coagulation；When liquid Fluid Contacting in membrane bioreactor 10 During the pointer of level sensor 26, this signal inputs programmable logic controller (PLC) 24 by liquid level sensor 26, now FPGA Controller 24 controls water solenoid valve I 16, water outlet-backwash to share water pump 17 and the unlatching of water solenoid valve II 18, and utilization can compile Journey logic controller 24 records treatment sewage addition and coagulant respectively according to feed water flow gauge 3 and coagulant flow gauge 31 Addition, startup stage terminate；
The activated sludge obtains according to the following steps：The returned sludge of sewage plant secondary sedimentation tank is derived from, through domestication After maturation, that is, obtain activated sludge；
The modified rice hull active carbon obtains according to the following steps：Soaked after rice husk removal of impurities, washing through 1mol/LHCl solution 4h is steeped, it is 7~8 to be washed to pH value, is dried at being 100 DEG C in temperature, removes K+、Na+、Ca2+、Fe2+、Mg2+, dried rice husk 800 DEG C of carbonization 3h of Muffle furnace isolation air are inserted, 0.2g carbonization rice husks and 20mL 1.5mol/L NaOH solutions are heated to reflux 2h, filtering, it is 7~8 to obtain filter residue and be washed to pH value, and it is modified rice hull active carbon head product to dry, and is lived through 600 DEG C of high temperature Change and modified rice hull active carbon is made；
The action effect of modified rice husk：To membrane bioreactor, the sludge of modified rice husk-membrane bioreactor coupling device The organic matter relative molecular weight distribution of mixing liquid carries out METHOD FOR CONTINUOUS DETERMINATION, as a result show modification rice husk add system to 3K~ 10KD, 10K~100KD,>The section organic matters of 100KD tri- (use UV254Value represent) removal effect, more single membrane biological reaction Device has been respectively increased 3%, 12%, 4%, shows that being modified rice husk has adsorbed partial organic substances and microbial metabolism in mud mixed liquid Product, mutually assemble in addition, adding the sludge flco after modified rice husk, bond and form biological rice husk, provided for microorganism Excellent living environment, enhances sludge activity, makes its degradation capability to organic matter stronger.
Normal water outlet stage：Continued using intake pump 2 by treatment sewage from intake pool 1, successively by feed water flow gauge 3 It is sent into water inlet control valve door 4 in coagulating basin 5, continues coagulant from medicine-chest 7 is entered using coagulant dosage pump 8, by coagulant Flowmeter 31 is sent into coagulating basin 5, and using programmable logic controller (PLC) 24 according to feed water flow gauge 3 and coagulant flow gauge 31 Treatment sewage addition and coagulant addition are recorded respectively, and aeration pump 13 is persistently aerated using continuous aeration mode, bubble Disturbance membrane biological reaction area is formed small vortex, prevent flco from sinking, beneficial to the mutual collision of flco and flocculation, enter And the abundant absorption to pollutant is realized, the abundant dissolved oxygen of offer is provided, is advantageous to the growth and breeding of microorganism, is given birth to Thing is degraded to improve the effect of water process.In order to ensure in membrane bioreactor 10 suspended sediment concentration be 20000mg/L~ 25000mg/L, the modified rice husk of supplement in time, sewage is by the delivery ports of ultrafiltration UF membrane modules 11 after processing, successively by water outlet Magnetic valve I 16, water outlet-backwash share water pump 17, water solenoid valve II 18 and water flow meter 19 and entered in discharge bay 20；Go out Water ga(u)ge 19 constantly by numeric feedback to programmable logic controller (PLC) 24, by the adjusting water outlet of programmable logic controller (PLC) 24- Backwash shares the frequency of water pump 17, ensures constant current water outlet；Shared in water outlet-backwash while water pump 17 starts and open sludge time Flow valve 28, and start sludge pump 25, carry out sludge reflux, by sludge concentration (SS) value control in coagulating basin 5 for 500mg/L~ 900mg/L, to reduce the low turbid influence to clean-up effect, coagulation effect is improved, now coagulant (aluminium polychloride) adds Amount is reduced to initial 50%~60%.
Backwash stage：According to the feedback information of water flow meter 19, when water discharging time reaches 25min~30min, can compile Journey logic controller 24 controls water solenoid valve I 16 and water solenoid valve II 18 to close, while controls the He of backwashing solenoid valve I 21 Backwashing solenoid valve II 22 is opened, and sewage is successively by backwashing solenoid valve I 21, water outlet-anti-after the processing that discharge bay 20 is deposited Rinse and share water pump 17, backwashing solenoid valve II 22 and backwash flowmeter 23, pass through the delivery port pair of ultrafiltration UF membrane modules 11 Ultrafiltration UF membrane modules 11 are backwashed；And according to the numerical requirements of backwash flowmeter 23 of program setting, input a signal into out Water-backwash shares the signal input part of water pump 17, and control water outlet-backwash shares the frequency converter regulating frequency of water pump 17, used Water-backwash shares the rotating speed of water pump 17 and is adapted with required water flow, and backwashing water is drained into membrane bioreactor 10, overflow Pipe 14 controls its interior unlikely spilling of water level, and superfluous water is drained into sludge-tank 27, and backwashing time is controlled in 2min~4min.
The spoil disposal stage：When the base sludge of membrane bioreactor 10 builds up to 12 bottom tube wall of aeration tube, sludge pump 25 is utilized Sludge is drained into sludge-tank 27 through spoil disposal valve 29, to the bottom suspended sediment concentration of membrane bioreactor 10 be 20000mg/L~ 25000mg/L, to prevent the solarization air cap of blocking aeration pipe 12.
The Membrane cleaning stage：When water outlet-backwash, which shares the numerical value of pressure gauge 15, reaches 0.05MPa, modified rice husk-ultrafiltration is closed All systems of membrane bioreactor coupling device, ultrafiltration UF membrane modules 11 are taken out, are cleaned.
The feature of low-temperature and low turbidity Gao Segao ammonia nitrogen source waters：0~5 DEG C of water temperature, turbidity are 10NTU~15NTU, colourity 40 ~50 degree, ammonia nitrogen is higher than 1mg/L~1.5mg/L.
Add the degradable organic carbon source (glucose) of biology, make the growth and breeding of microorganism in reactor mixed liquor not by The limitation of poor nutrient environment, biological easily biodegradable organicses and the bio-refractory organic matter of accumulation in reactor can be also promoted to produce Co metabolism effect, the potential of activated sludge is excavated, ensure the COD of liquid in membrane bioreactor 10Mn5mg/L~7mg/L, TOC 6mg/L~8mg/L, pH=7.
Startup stage：Coagulant (aluminium polychloride) dosage is 20mg/L~25mg/L, the rotating speed 800r/ of agitator 6 Min, it is 2min in the residence time of coagulating basin 5；
Normal water outlet stage, coagulant (aluminium polychloride) dosage are 10mg/L~15mg/L, the rotating speed of agitator 6 800r/min, it is 2min in the residence time of coagulating basin 5；
Described ultrafiltration UF membrane modules 11 are middle Kynoar hollow fiber curtain type film assembly, by Tianjin film day science and technology share Co., Ltd produces, and its pH scope is 2~10；Permission operating pressure is 0.01MPa~0.05MPa；Membrane aperture 0.02 μm~0.2 μm；400 μm~450 μm of external diameter, 320 μm~350 μm of internal diameter；Film size 80cm × 1000 piece；Its molecular cut off be 60000~ 100000；Porosity is 40%~50%.
It is 28L/h that membrane bioreactor 10, which handles water, and hydraulic detention time HRT is 2h；Water flow controls during operation In 95~100L/m2H, time control are controlled in 0.4m in 25~30min, backwash water flow3/m2H~0.5m3/ m2H, time control is in 2min~4min；
Dissolved oxygen concentration is 6mg/L~7mg/L in membrane bioreactor 10.
Operation 3 days, water inlet chroma stability is at 50 degree, and for effluent color dilution at 2 degree~3 degree, clearance is about 96%；CODMnContent In 2.5mg/L~2.2mg/L, clearance reaches 70%-80%；NH4- N clearances are of a relatively high when starting, and about 95%, water In total nitrogen content clearance it is relatively low, be 20%~26%.
Effluent color dilution after operation processing in 9 days is at 3 degree~5 degree；Chroma removal rate is 90%~95%；CODMnClearance is 40%~48%, its content causes its clearance rapid drawdown to 40% left side in 2mg/L or so due to changing water after the 9th day It is right；NH4- N clearance also decreases, and is 77%~85%, and the clearance of total nitrogen content is 19%~29% in water, water outlet In total nitrogen content be 3.3mg/L~5.1mg/L.
Operation handles laggard colority of water stabilization for 15 days at 40 degree or so, and effluent color dilution is 0 degree~4 degree；Water outlet CODMnFor 1.62mg/L~1.85mg/L, its clearance are 70%~75%, NH in water4- N is 1mg/L~1.5mg/L, and clearance is 80%~88%, total nitrogen content be 2.2mg/L~2.8mg/L in water, and clearance is 15%~30%.
Operation 30 days, enters colority of water and has been lifted, between 40 degree~45 degree, effluent color dilution is between 1 degree~2 degree； CODMnClearance is close to 88%, water outlet CODMnValue stabilization is in 1.5mg/L or so；NH in water4Before-N clearance and test run Total ammon amount in 95% or so, water that remains basically stable for three days gradually decreases, and clearance is about 25%~40%.
Operation 45 days, effluent color dilution clearance reaches 94%~98%, and effluent color dilution is more stable at 2 degree or so；CODMn Clearance is 80%-90%；NH in water4- N clearance is stable to be fluctuated, average out to 95% or so, and the clearance of total nitrogen content is 35%~50%.
Operation 90 days, water inlet chroma stability at 37 degree or so, effluent color dilution close to 0, chroma removal rate close to 98%~ 100%；CODMnClearance is stable to be fluctuated, average out to 85%；NH in water4- N clearance is stable to be fluctuated, and average out to 96.2%~ 98%；Total nitrogen content is stable in water outlet reaches 59%~70% in 0.7~0.9mg/L, clearance.

Claims (7)

  1. A kind of a kind of 1. modified rice husk-ultrafiltration membrane bioreactor coupling device, it is characterised in that modified rice husk-milipore filter biology Reactor coupling device is by water inlet system, coagulation system, membrane bio-reaction system, outlet system, backwashing system, spoil disposal system System, sludge recirculation system and robot control system(RCS) composition；
    Described water inlet system includes intake pool (1), intake pump (2), feed water flow gauge (3) and water inlet control valve door (4)；
    Described coagulation system includes coagulating basin (5), agitator (6), enters medicine-chest (7), coagulant dosage pump (8) and coagulant flow Gauge (31)；Agitator (6) is set in coagulating basin (5)；
    Described membrane bio-reaction system including filler add case (9), membrane bioreactor (10), ultrafiltration UF membrane modules (11), Aeration tube (12), aeration pump (13), overflow pipe (14), fluid level controller (26) and filler (30)；The ultrafiltration UF membrane modules (11) vacantly it is arranged in membrane bioreactor (10)；The aeration tube (12) is arranged on below ultrafiltration UF membrane modules (11), is exposed One end connection aeration pump (13) of tracheae (12)；
    Described outlet system is common including the shared pressure gauge (15) of water outlet-backwash, water solenoid valve I (16), water outlet-backwash With water pump (17), water solenoid valve II (18), water flow meter (19) and discharge bay (20)；
    Described backwashing system includes backwashing solenoid valve I (21), water outlet-backwash shares water pump (17), backwash electromagnetism Valve II (22), water outlet-backwash share pressure gauge (15) and backwash flowmeter (23)；
    Described sludge drainage system includes sludge pump (25), spoil disposal valve (29) and sludge-tank (27)；
    Described sludge recirculation system includes sludge pump (25) and sludge reflux valve (28)；
    Described robot control system(RCS) includes programmable logic controller (PLC) (24), fluid level controller (26), coagulant flow gauge (31), gone out Water-backwash shares pressure gauge (15), water solenoid valve I (16), the shared water pump (17) of water outlet-backwash, water solenoid valve II (18), water flow meter (19), backwashing solenoid valve I (21), backwashing solenoid valve II (22), backwash flowmeter and enter (23) Water ga(u)ge (3)；
    The coagulating basin (5) is separated with membrane bioreactor (10) by overflow wall, and overflow wall highly less than coagulating basin (5) and Membrane bioreactor (10) other side walls；
    The fluid level controller (26) is vacantly arranged on above ultrafiltration UF membrane modules (11), and the pointer end of fluid level controller (26) End height is higher than ultrafiltration UF membrane modules (11) water outlet height, less than overflow wall height；
    Overfall is set in the side wall of membrane bioreactor (10) non-overflow wall, and the height of overfall is high less than overflow wall Degree, higher than the pointer end height of fluid level controller (26), overfall connects with the one end of overflow pipe (14), overflow pipe (14) The other end connects with sludge-tank (27)；
    Treatment sewage enters coagulation system by water inlet system, then enters membrane bio-reaction system by overflow, after processing Sewage enters outlet system by membrane bio-reaction system；
    Sludge caused by membrane bio-reaction system is discharged by sludge drainage system；
    Sludge reflux caused by membrane bio-reaction system is entered by coagulation system by sludge recirculation system；
    Outlet system and backwashing system is controlled to switch by robot control system(RCS)；
    Ultrafiltration UF membrane modules (11) in membrane bio-reaction system are backwashed by backwashing system.
  2. 2. a kind of modified rice husk-ultrafiltration membrane bioreactor coupling device according to claim 1, it is characterised in that wait to locate Reason sewage is stored in intake pool (1), and by feed water flow gauge (3) and treatment sewage is entered into water management using intake pump (2) Valve (4) is sent into coagulating basin (5).
  3. A kind of 3. modified rice husk-ultrafiltration membrane bioreactor coupling device according to claim 1, it is characterised in that coagulation Agent is stored in into medicine-chest (7), and coagulant is sent into coagulating basin by coagulant flow gauge (31) using coagulant dosage pump (8) (5) in.
  4. A kind of 4. modified rice husk-ultrafiltration membrane bioreactor coupling device according to claim 1, it is characterised in that filler (30) it is stored in filler to add in case (9), add case (9) by filler is added to membrane bioreactor (10) by filler (30) In.
  5. 5. a kind of modified rice husk-ultrafiltration membrane bioreactor coupling device according to claim 1, it is characterised in that in film Bioreactor (10) bottom mud mouth is connected by sludge pump (25) and spoil disposal valve (29) with sludge-tank (27), in film biology Reactor (10) bottom mud mouth is connected by sludge pump (25) and sludge reflux valve (28) with coagulating basin (5).
  6. A kind of 6. modified rice husk-ultrafiltration membrane bioreactor coupling device according to claim 1, it is characterised in that processing Sewage shares water by water solenoid valve I (16), water outlet-backwash successively by the delivery port of ultrafiltration UF membrane modules (11) afterwards Pump (17), water solenoid valve II (18) and water flow meter (19) enter in discharge bay (20).
  7. A kind of 7. modified rice husk-ultrafiltration membrane bioreactor coupling device according to claim 1, it is characterised in that recoil When washing, water solenoid valve I (16) and water solenoid valve II (18) are closed, while backwashing solenoid valve I (21) and backwash electromagnetism Valve II (22) is opened, and sewage is successively by backwashing solenoid valve I (21), water outlet-backwash after the processing of discharge bay (20) storage Water pump (17), backwashing solenoid valve II (22) and backwash flowmeter (23) are shared, passes through the water outlet of ultrafiltration UF membrane modules (11) Mouth backwashes to ultrafiltration UF membrane modules (11).
CN201720426301.XU 2017-04-21 2017-04-21 A kind of modified rice husk ultrafiltration membrane bioreactor coupling device Expired - Fee Related CN206645887U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111704317A (en) * 2020-06-28 2020-09-25 重庆工商大学 Method for slowing down membrane pollution of aerobic granular sludge membrane bioreactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111704317A (en) * 2020-06-28 2020-09-25 重庆工商大学 Method for slowing down membrane pollution of aerobic granular sludge membrane bioreactor
CN111704317B (en) * 2020-06-28 2022-07-08 重庆工商大学 Method for slowing down membrane pollution of aerobic granular sludge membrane bioreactor

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