CN105884020A - Low-energy-consumption fouling-resistant anaerobic membrane bioreactor - Google Patents
Low-energy-consumption fouling-resistant anaerobic membrane bioreactor Download PDFInfo
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- CN105884020A CN105884020A CN201610325276.6A CN201610325276A CN105884020A CN 105884020 A CN105884020 A CN 105884020A CN 201610325276 A CN201610325276 A CN 201610325276A CN 105884020 A CN105884020 A CN 105884020A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2893—Particular arrangements for anaerobic reactors with biogas recycling
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a low-energy-consumption fouling-resistant anaerobic membrane bioreactor which comprises a reactor, a membrane tank and a gas-pressure regulating tank, wherein the membrane tank comprises a rectangular column; the lower end of the rectangular column is provided with a conical sludge hopper; the middle of the conical sludge hopper is provided with a sludge discharge port; a porous sludge filter plate is arranged above the conical sludge hopper in the rectangular column; a plurality of aeration pipes are arranged above the porous sludge filter plate; the aeration pipes are sequentially connected with a gas rotameter, a gas circulation pump and the gas-pressure regulating tank through gas pipes; both sides of the aeration pipes are provided with a gas guide plate, and a plate membrane element is arranged above the aeration pipes; the upper surface of the rectangular column above the plate membrane element is provided with a membrane tank gas outlet and a water outlet; the membrane tank gas outlet is connected with the gas-pressure regulating tank; the inner side of the water outlet is connected with the plate membrane element, and the inner side is sequentially connected with a vacuum negative pressure meter and a suction pump through water pipes; and a partition is arranged between the side wall of the rectangular column and the adjacent plate membrane element. The low-energy-consumption fouling-resistant anaerobic membrane bioreactor is suitable for treating organic wastewater with various concentrations, and solves the problem of coupling between the anaerobic reactor and membrane component.
Description
Technical field
The invention belongs to anaerobic biological wastewater treatment field, particularly relate to a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor.
Background technology
Industrial wastewater (industrial wastewater), refer to waste water and the waste liquid discharged in art production process, wherein contain the pollutant produced in commercial production materials, intermediate product, side-product and the production process outflowed with water, it is to cause environmental pollution, the major reason that particularly water pollutes.Although the process of industrial wastewater had begun to as far back as 19 end of the centurys, but due to many industrial wastewater complicated components, character is changeable, still has some technical problems not to be fully solved.
Along with constantly advancing and the worsening shortages of World Freshwater Resources of process of industrialization, effectively improvement and the reuse thereof of industrial wastewater middle and high concentration organic wastewater are one of difficult problems of field of waste water treatment.Membrane separation technique can realize the separation to muddy water mixed solution and concentration under certain driving force effect, thus effectively hold and stay function bacterium, greatly promotes system treatment efficiency, has boundless application and development prospect.Its proposition starts from 20 century 70s, and membrane module is introduced system for anaerobic treatment, thereby produces AnMBR by Grethlein etc..AnMBR technology, both there is the advantages such as the high concentration of Anaerobic Biotechnology, high load capacity, low energy consumption and recyclable biogas energy, possess again the membrane separation technique effect of efficiently damming to suspended solid, microorganism etc., mud mud age and the separation of hydraulic detention time can be realized.External AnMBR is that membrane module is provided separately with bioreactor.Mixed liquor is delivered to the filter end of membrane module after circulating pump supercharging, and the filtrate in mixed liquor becomes system process water outlet through film under pressure.
Tradition external AnMBR carries out liquid circulation by circulating pump and improves fouling membrane situation with the slipstream of shape film formation surface.But for reducing the pollutant fast deposition on film surface, bigger water circulation amount need to be provided so that higher energy consumption, there are some researches show film often through 1m3The water yield needs 25～80m3Mud mixed liquid circulating load.Tradition external AnMBR not only consumes energy height, and there is the problems such as concentrated solution backflow causes the distribution of inside reactor granularity and microorganism species system to deteriorate and fouling membrane is serious, and problem above is to hinder the main cause of its popularization and application.
Summary of the invention
The technical problem to be solved is to provide a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor, solves the problem that Anaerobic treatment technique combines with membrane separation technique that existing fouling membrane is serious, highly energy-consuming and concentrated solution reflux.
nullThe technical solution adopted for the present invention to solve the technical problems is: provide a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor，Including reactor、Film groove is gentle-pressure regulation tank，Wherein said film groove includes rectangular cylinder，Described rectangular cylinder lower end is taper bucket，It is provided with mud discharging mouth in the middle of described taper bucket，Above described taper bucket、Porous filter mud plate it is provided with in rectangular cylinder，Described porous filter mud plate is arranged over some aeration tubes，Aeration tube by trachea successively with gas rotameter、Gas circulator is gentle-and pressure regulation tank connects，Described aeration tube both sides are provided with gas guide plate、It is arranged over flat membrane component，Above described flat membrane component、Rectangular cylinder upper surface is provided with film groove gas outlet and outlet，Described film groove gas outlet is connected with gas-pressure regulation tank，It is connected with flat membrane component inside described outlet、Outside is sequentially connected with negative pressure of vacuum table and suction pump by water pipe，Described rectangular cylinder upper surface is provided with liquidometer，Liquid level in controlling film groove，It is provided with dividing plate between rectangular cylinder sidewall and adjacent flat membrane component，Water distribution area is formed between described dividing plate and rectangular cylinder sidewall，Above described water distribution area、Rectangular cylinder is provided with water inlet，Described water inlet is connected with reactor，Waste water after reacted device is processed by described reactor by water inlet is sent into film groove，Described reactor is connected with gas-pressure regulation tank，The gas produced for reactor enters gas-pressure regulation tank.
The further technical scheme of the present invention is that described reactor is anaerobic reactor, for anaerobic bio-treated.
The further technical scheme of the present invention is, described porous filter mud plate is angle theta flap between 120 °-150 °, and described flap surface is provided with some holes.
The further technical scheme of the present invention is, is provided with gap between adjacent porous filter mud plate.
The further technical scheme of the present invention is that described aeration tube is arranged in parallel with flat membrane component lower end, and is provided with circulation deflector between adjacent panels membrane component, and circulation deflector lower end is slightly below aeration tube lower end 5-10cm, uses adjacent aeration tube alternative aeration.
The further technical scheme of the present invention is, described dividing plate upper end is higher than film groove internal liquid level 10-30cm.
The further technical scheme of the present invention is, described water inlet is arranged symmetrically in film groove both sides, and the water inlet of film groove is flow automatically from top to bottom.
The further technical scheme of the present invention is, described gas-pressure regulation tank includes cylinder and liquid storage pipe, described cylinder upper end is provided with air inlet, sidewall and sets loop exit and refluxing opening respectively, described air inlet is connected with the gas outlet of reactor, described loop exit is connected with gas circulator, body spinner flowmeter and aeration tube successively by trachea, described refluxing opening is connected with film groove gas outlet, the liquid storage pipe of described refluxing opening bottom is arranged in liquid storage pipe, and described liquid storage pipe sidewall upper sets air vent, lower end is provided with pressure regulator valve.
The further technical scheme of the present invention is, described cylinder and liquid storage pipe are cylinder.
The further technical scheme of the present invention is, described liquid storage pipe is built with amine aqueous solution, and amine aqueous solution liquid level is higher than cylinder bottom, and described cylinder internal pressure controls liquid level by pressure regulator valve and is adjusted, and described liquid storage pipe sidewall indicates scale.
Present invention utilizes the combination of bio anaerobic digestion three-stage theory (hydrolysed ferment stage, hydrogenesis and acetogenesis stage and methane phase stage) and membrance separation principle, it is integrated with microbiology, membrane separation technique, bioreactor engineering and hydraulic principle, solves the coupled problem of anaerobic reactor and membrane module.
Beneficial effect
The present invention, compared with other prior aries, has the advantages that
1) water outlet of anaerobic biological reactor directly enters in film groove from film groove upper end, it is achieved Non-energy-consumption gravity flow water inlet, significantly reduces water inlet energy consumption；Water inlet is from film groove two ends symmetry water distribution, it is to avoid increase filtration resistance because of concentration polarization；
2) arranging dividing plate between film groove sidewall and membrane component, dividing plate upper end realizes water inlet higher than film groove internal liquid level and pumps out water with film and separate, in water inlet mud sink to bottom because of gravitational settling, thus avoid short flow phenomenon and effective lessening membrane fouling；
3) between adjacent two membrane components, circulation deflector is set, adjacent aeration tube alternative aeration is used to run, while the self-produced biogas of system washes away film surface, aeration zone forms gas-liquid mixed, forming circulating phenomenon with aeration zone because of density contrast without aeration zone, this Circulation has not only washed away film surface but also make use of liquid to realize solid-liquid separation with the density contrast of mud.
4) aeration tube is parallel with flat membrane component lower sideline, sets gas guide plate and make the parallel film surface of washing away of recyclegas above it, and gas to act on the power of mud vertical with the suction force that film surface is formed；
5) set below aeration tube and have certain distance between porous filter mud plate and adjacent two filter mud plates, while beneficially mud sinks to bucket, avoid Mud up-floating；
6) gas-pressure regulation tank has the construction features of " integrally dual chamber porous ".It is integrated with the functions such as self-produced biogas recirculation, pressure controlling and biogas purification.The shearing force that biogas recirculation is formed washes away membrane module surface, increases its turbulent extent, notable prolonging service lifetime of film；Pressure self-balancing function (being regulated and controled by pressure regulator valve) has ensured the safe operation of system；Additionally, amine aqueous solution utilizes chemical absorbing principle to have the function of purification biogas；
7) being lessening membrane fouling, the present invention uses system self-produced biogas recirculation aeration mode to replace conventional hybrid liquid endless form, improves flush efficiency height and reduces energy consumption；
8) present invention uses biogas recirculation to wash away film surface, ensure that the anaerobic state within film groove continues to realize without concentrated solution (circulating without concentrated solution), both reduced energy consumption and turn avoid because concentrated solution backflow causes the particle diameter distribution of inside reactor granule sludge and microorganism species to deteriorate.
9) present invention is suitable for the process of various concentration organic wastewater.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is the top view of porous filter mud plate in rectangular cylinder.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Embodiment 1
nullAs shown in Figure 1，A kind of low energy consumption anti-pollution type anaerobic membrane bioreactor，Including reactor I、Film groove II is gentle-pressure regulation tank III，Wherein said film groove II includes rectangular cylinder 3，Described rectangular cylinder 3 lower end is taper bucket 1，It is provided with mud discharging mouth 15 in the middle of described taper bucket 1，Above described taper bucket 1、Porous filter mud plate 14 it is provided with in rectangular cylinder 3，Described porous filter mud plate 14 is arranged over some aeration tubes 2，Aeration tube 2 by trachea successively with gas rotameter 25、Gas circulator 24 is gentle-and pressure regulation tank III connects，Described aeration tube 2 both sides are provided with gas guide plate 4、It is arranged over flat membrane component 5，Above described flat membrane component 5、Rectangular cylinder 3 upper surface is provided with film groove gas outlet 10 and outlet 11，Described film groove gas outlet 10 is connected with gas-pressure regulation tank III，It is connected with flat membrane component 5 inside described outlet 11、Outside is sequentially connected with negative pressure of vacuum table 12 and suction pump 13 by water pipe，Described rectangular cylinder 3 upper surface is provided with liquidometer 9，Liquid level in controlling film groove II，Dividing plate 6 it is provided with between rectangular cylinder sidewall and adjacent flat membrane component 5，Realization water inlet pumps out water with film and separates lessening membrane fouling，Extend cycle of operation and avoid short flow phenomenon，Water distribution area is formed between described dividing plate 6 and rectangular cylinder sidewall，Above described water distribution area、Rectangular cylinder 3 is provided with water inlet 8，Described water inlet 8 is connected with reactor I，Waste water after reacted device I is processed by described reactor I by water inlet 8 is sent into film groove II，Realize Non-energy-consumption gravity flow water inlet，Significantly reduce water inlet energy consumption，Described reactor I is connected with gas-pressure regulation tank III，The gas produced for reactor I enters gas-pressure regulation tank III，Described reactor I is anaerobic reactor，For anaerobic bio-treated.
Described porous filter mud plate 14 is angle theta flap between 120 °-150 °, and described flap surface is provided with some holes 27；Gap 26 it is provided with, as shown in Figure 2 between adjacent porous filter mud plate 14.
Described aeration tube 2 is arranged in parallel with flat membrane component 5 lower end, and is provided with circulation deflector 7 between adjacent panels membrane component 5, and circulation deflector 7 lower end is slightly below aeration tube 2 bottom 5-10cm, uses adjacent aeration tube 2 alternative aeration to run；Adjacent aeration tube alternative aeration is used to run, while system self-produced (anaerobic reactor self produces) biogas washes away film surface, aeration zone forms gas-liquid mixed, forming circulating phenomenon with aeration zone because of density contrast without aeration zone, such Circulation has not only washed away film surface but also make use of liquid to realize solid-liquid separation with the density contrast of mud.
Described dividing plate 6 upper end is higher than film groove II internal liquid level 10-30cm.
Described water inlet 8 is arranged symmetrically in film groove II both sides, and film groove II is intake and flow automatically from top to bottom.
Described gas-pressure regulation tank III includes cylinder 21 and liquid storage pipe 20, described cylinder 21 upper end is provided with air inlet 18, sidewall and sets loop exit 19 and refluxing opening 17 respectively, described air inlet 18 is connected with the gas outlet of reactor I, described loop exit 19 is connected with gas circulator 24, body spinner flowmeter 25 and aeration tube 2 successively by trachea, described refluxing opening 17 is connected with film groove gas outlet 10, the liquid storage pipe 20 of described refluxing opening 17 bottom is arranged in liquid storage pipe 20, and described liquid storage pipe 20 sidewall upper sets air vent 16, lower end is provided with pressure regulator valve 22；Described cylinder 21 and liquid storage pipe 20 are cylinder；Described liquid storage pipe 20 is built with amine aqueous solution 23, and amine aqueous solution 23 liquid level is higher than cylinder 21 bottom, and described cylinder 21 internal pressure controls liquid level by pressure regulator valve 22 and is adjusted, and described liquid storage pipe 20 sidewall indicates scale.Gas-pressure regulation tank III has the construction features of " integrally dual chamber porous ", the most integrally refers to its overall structure integration, amine aqueous solution liquid storage pipe and cylinder is separated into double-chamber structure, and loose structure realizes the turnover of gas, circulation and pressure controlling.Gas-pressure regulation tank is integrated with the functions such as self-produced biogas recirculation, pressure controlling and purification biogas.The shearing force that biogas recirculation is formed washes away membrane module surface, increases its turbulent extent, notable prolonging service lifetime of film；Pressure self-balancing function (being regulated and controled by pressure regulator valve) has ensured the safe operation of system；Additionally, amine aqueous solution utilizes chemical absorbing principle to have the function of purification biogas.
The method of operation of the present invention is as follows:
Organic wastewater enters anaerobic reactor I after anaerobic bio-treated, by the water inlet pipe 8 of film groove II to flow in film groove II from stream mode, mud a small amount of in water is because sinking to bucket 1 by porous filter mud plate 14 after gravitational settling effect, and the internal waste water of film groove II produces suction by suction pump 13 and filters water outlet through flat membrane component 5.Biogas (the CH that anaerobic reactor I produces because of Organic substance anaerobic digestion4、CO2And H2The mixed gas such as S), through the cylinder 21 that the air inlet 18 of gas-pressure balanced tank III enters, when cylinder 21 internal pressure reaches to set pressure (pressure controls liquid level by pressure regulator valve 22 and regulates), now air-flow divides two parts, a part of gas enters the aeration tube 2 within film groove II by gas circulator 24, film surface is washed away by the guide functions aeration of gas guide plate 4, pass sequentially through again film groove II gas outlet 10 gentle-pressure balanced tank III refluxing opening 17 returns to cylinder 21, another part gas enters liquid storage pipe 20 through the amine aqueous solution 23 separating cylinder 21 liquid storage pipe 20, sludge gas collecting device is entered through air vent after.
Claims (10)
1. a low energy consumption anti-pollution type anaerobic membrane bioreactor, including reactor (I), film groove (II) gentle-pressure regulation
Tank (III), it is characterised in that: described film groove (II) includes rectangular cylinder (3), described rectangular cylinder (3) lower end
For being provided with mud discharging mouth (15) in the middle of taper bucket (1), described taper bucket (1), described taper bucket (1) top,
Being provided with porous filter mud plate (14) in rectangular cylinder (3), described porous filter mud plate (14) is arranged over some aeration tubes
(2), aeration tube (2) by trachea successively gentle with gas rotameter (25), gas circulator (24)-
Pressure regulation tank (III) connects, and described aeration tube (2) both sides are provided with gas guide plate (4), are arranged over flat membrane
Part (5), described flat membrane component (5) top, rectangular cylinder (3) upper surface be provided with film groove gas outlet (10) and
Outlet (11), described film groove gas outlet (10) is connected with gas-pressure regulation tank (III), described outlet (11)
Inner side is connected with flat membrane component (5), outside is sequentially connected with negative pressure of vacuum table (12) and suction pump (13) by water pipe,
Described rectangular cylinder (3) upper surface is provided with liquidometer (9), is used for controlling film groove (II) interior liquid level, rectangular column side
Dividing plate (6) it is provided with, between described dividing plate (6) and rectangular cylinder sidewall between wall and adjacent flat membrane component (5)
Formed water distribution area, above described water distribution area, rectangular cylinder (3) be provided with water inlet (8), described water inlet (8)
It is connected with reactor (I), after reacted device (I) is processed by described reactor (I) by water inlet (8)
Waste water is sent into film groove (II), and described reactor (I) is connected, for reactor (I) with gas-pressure regulation tank (III)
The gas produced enters gas-pressure regulation tank (III).
2. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: described reaction
Device (I) is anaerobic reactor, for anaerobic bio-treated.
3. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: described porous
Filter mud plate (14) is angle theta flap between 120 °-150 °, and described flap surface is provided with some holes (27).
4. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: adjacent porous
Gap (26) it is provided with between filter mud plate (14).
5. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: described aeration
Pipe (2) is arranged in parallel with flat membrane component (5) lower end, and is provided with circulation water conservancy diversion between adjacent panels membrane component (5)
Plate (7), circulation deflector (7) lower end, less than aeration tube (2) bottom 5-10cm, uses adjacent aeration tube (2)
Alternative aeration.
6. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: described dividing plate
(6) upper end is higher than film groove (II) internal liquid level 10-30cm.
7. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: described water inlet
Mouth (8) is arranged symmetrically in film groove (II) both sides, and film groove (II) water inlet is flow automatically from top to bottom.
8. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 1, it is characterised in that: described gas-
Pressure regulation tank (III) includes cylinder (21) and liquid storage pipe (20), and described cylinder (21) upper end is provided with air inlet
(18), sidewall sets loop exit (19) and refluxing opening (17), described air inlet (18) and reactor (I) respectively
Gas outlet connect, described loop exit (19) by trachea successively with gas circulator (24), body spinner flowmeter
(25) connecting with aeration tube (2), described refluxing opening (17) is connected with film groove gas outlet (10), described refluxing opening
(17), in the liquid storage pipe (20) of bottom is arranged on liquid storage pipe (20), described liquid storage pipe (20) sidewall upper sets row
QI KOU (16), lower end are provided with pressure regulator valve (22).
9. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 8, it is characterised in that: described gas storage
Pipe (21) and liquid storage pipe (20) are cylinder.
10. a kind of low energy consumption anti-pollution type anaerobic membrane bioreactor as claimed in claim 8, it is characterised in that: described storage
Liquid pipe (20) is built with amine aqueous solution (23), and amine aqueous solution (23) liquid level is higher than cylinder (21) bottom, described storage
Trachea (21) internal pressure controls liquid level by pressure regulator valve (22) and is adjusted, described liquid storage pipe (20) side
Wall indicates scale.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610325276.6A CN105884020B (en) | 2016-05-16 | 2016-05-16 | A kind of low energy consumption anti-pollution type anaerobic membrane bioreactor |
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| CN201610325276.6A CN105884020B (en) | 2016-05-16 | 2016-05-16 | A kind of low energy consumption anti-pollution type anaerobic membrane bioreactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109574208A (en) * | 2018-12-10 | 2019-04-05 | 智造起源科技有限公司 | A kind of separated type modular panel film group device |
| CN109704459A (en) * | 2018-12-10 | 2019-05-03 | 智造起源科技有限公司 | A kind of anaerobic membrane bioreactor |
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| JP2003181483A (en) * | 2001-12-18 | 2003-07-02 | Nikko Co | Method for treating septic tank and the septic tank |
| CN203602453U (en) * | 2013-11-26 | 2014-05-21 | 苏州思源环保工程有限公司 | Anaerobic meane biological reactor |
| CN105347475A (en) * | 2015-10-30 | 2016-02-24 | 东华大学 | Symmetric built-in anaerobic membrane bioreactor |
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2016
- 2016-05-16 CN CN201610325276.6A patent/CN105884020B/en not_active Expired - Fee Related
Patent Citations (3)
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| JP2003181483A (en) * | 2001-12-18 | 2003-07-02 | Nikko Co | Method for treating septic tank and the septic tank |
| CN203602453U (en) * | 2013-11-26 | 2014-05-21 | 苏州思源环保工程有限公司 | Anaerobic meane biological reactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109574208A (en) * | 2018-12-10 | 2019-04-05 | 智造起源科技有限公司 | A kind of separated type modular panel film group device |
| CN109704459A (en) * | 2018-12-10 | 2019-05-03 | 智造起源科技有限公司 | A kind of anaerobic membrane bioreactor |
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| CN105884020B (en) | 2019-06-21 |
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Effective date of registration: 20180727 Address after: 201620 No. 2999 North Renmin Road, Songjiang new town, Songjiang District, Shanghai. Applicant after: DONGHUA University Applicant after: SICHUAN University OF SCIENCE & ENGINEERING Address before: 201620 No. 2999 North Renmin Road, Songjiang new town, Songjiang District, Shanghai. Applicant before: Donghua University |
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