CN205398223U - Built -in membrane separation formula anaerobism mud inner loop reactor - Google Patents
Built -in membrane separation formula anaerobism mud inner loop reactor Download PDFInfo
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- CN205398223U CN205398223U CN201620180605.8U CN201620180605U CN205398223U CN 205398223 U CN205398223 U CN 205398223U CN 201620180605 U CN201620180605 U CN 201620180605U CN 205398223 U CN205398223 U CN 205398223U
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses an anaerobism granular sludge inflation bed reactor and MBR combine reactor as an organic whole, and the body comprises water -locator, three -phase separator, built -in membrane module, vapour and liquid separator, intake pump, inner loop pump, suction water pump etc. Have high granular sludge concentration, high reaction rate and high volumetric loading, adopt built -in membrane to carry out mud -water separation to mixing liquid, be 100% to the rate of holding back of anaerobism mud, suspended solid, to macromolecular species's such as colloid the rate of holding back nearly 70% 80%, it is good to go out water quality of water, and the turbidity is close 0, and separates the influence that the effect did not receive to rise velocity of flow degree and torrent degree, adopts the optimal design simultaneously, makes the membrane have good antipollution ability and stable water flux. The utility model discloses to can be applied to landfill leachate, municipal sewage, food waste water, slaughter waste water, improvement field such as bio -pharmaceuticals waste water, coking wastewater, papermaking waste water, petrochemical wastewater, high salinity preserved szechuan pickle waste water.
Description
Technical field
The utility model relates to a kind of built-in UF membrane formula anaerobic sludge inner circulation reactor, can be applicable to the improvement fields such as percolate, municipal wastewater, food wastewater, slaughtering wastewater, Wastewater in Biologic Pharmacy, coking chemical waste water, paper waste, petrochemical wastewater, high salinity preserved szechuan pickle waste water.
Background technology
Process high and low concentration organic waste water or the anaerobic reactor form containing big molecule hardly degraded organic substance waste water has up flow anaerobic sludge blanket reactor (UASB), expanded granular sludge bed reactor reactor (EGSB) and is thoroughly mixed formula anaerobic reactor (CMAR).
The middle temperature volumetric loading of UASB is about 3-10kgCOD/(m3.d), reactor sludge concentration about 30gVSS/L, clearance to COD (COD) is 80%-90%, clearance to solid suspension (SS) is 30%-50%, in order to ensure retaining of effluent quality and mud, in reactor, the upflow velocity of waste water is preferably less than 0.8m/h.
The middle temperature volumetric loading of EGSB is about 10-30kgCOD/(m3.d), reactor sludge concentration about 30gVSS/L, clearance to the COD of degradable waste water is 70%-90%, clearance to SS is 30%-50%, clearance to the COD of used water difficult to degradate is 50%-70%, and the clearance to SS is 20%-40%.Its upflow velocity, preferably between 3-7m/h, in order to have preferable effluent quality, sets two-stage device for separating mud and water in the height direction, and the height of device is the highest, and available depth is preferably 15-24m, ratio of height to diameter 3-8.
The reactor that separates, 0.5-1.5m under sludge blanket three phase separator to be maintained are carried out by three phase separator for these, spoil disposal when mud is too much, should be carried out.
It is thoroughly mixed formula anaerobic reactor (CMAR) be divided into without backflow and have two kinds of forms of backflow.Arranging stirring measure makes reaction tank interior in being thoroughly mixed state, and anaerobic effluent enters degasser and sedimentation basin.Its entirety is 70%-90% to the clearance of COD, and the clearance to SS is 80%-90%.
Contradiction between the high load capacity of anaerobic reactor, high reaction speed, promotion Flow Velocity, high turbulent extent and mud-water separation effect has to be solved.
MBR is a kind of activated Sludge System, uses membrane filtration to realize mud-water separation, in activated sludge is trapped in biochemistry pool by film thus improve the sludge concentration of biochemistry pool and biochemical speed, obtain more preferable effluent quality by membrane filtration simultaneously.MBR is divided into the aerobic and big class of anaerobism two according to the difference of growth of microorganism environment.
At present, the MBR of aerobic form is applied on process and the Treated sewage reusing of the industry sewage such as municipal administration, livestock and poultry cultivation, printing and dyeing papermaking, iron and steel, petrochemical industry, medical treatment the most widely.
Anaerobism MBR, system does not allow aeration, but Simon Judd etc. use the intermittent aerating mode of every 10min aeration 5s, the effect that film is washed away by this kind of method is little, and having significant limitation at secure context, explosion limit as aerial in methane is 5%-15%, there is potential safety hazard.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide the anaerobic sludge inner circulation reactor that a kind for the treatment of effeciency is high, effluent quality is good.
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of built-in UF membrane formula anaerobic sludge inner circulation reactor, including anaerobic reactor body, three phase separator, with three phase separator for line of demarcation, anaerobic reactor body is divided into Sludge Bed and top-film Disengagement zone, it is additionally provided with gas-liquid separator on described anaerobic reactor body, it is connected between described gas-liquid separator with top-film Disengagement zone and has the first loop, described first loop is disposed with gas storage holder, Marsh gas compression machine, gas vacuum tank, gas flowmeter.
By above-mentioned setting, base sludge bed district sludge concentration is up to 30-40g/L, and major part is the granule sludge that particle diameter is big, density is big, settling property is good, has high organic matter degradation rate and high volumetric loading.Top-film Disengagement zone sludge concentration is relatively low, and the floc sludge that predominantly sedimentation function is poor, sludge concentration, at below 5000-8000mg/L, places built-in membrane module wherein, to separated through three phase separator containing part floc sludge and carry out separation of solid and liquid through the waste water of anaerobic degradation.
Can be preferably as concrete scheme of the present utility model: in described top-film Disengagement zone, be provided with built-in membrane module, connect on described built-in membrane module and have the second loop, described second loop is disposed with vacuum meter, produces water motor-driven valve, suction water pump, spinner flowmeter, backwash water tank, backwash water pump, backwash motor-driven valve.
Can be preferably as concrete scheme of the present utility model: the pore diameter range of described built-in membrane module is 0.05-0.1 μm.
By above-mentioned setting, the built-in membrane module (6) using aperture 0.05-0.1 μm is separating medium, anaerobe in reactor, suspension and big molecule difficult degradation colloidal substance etc. are retained, the rejection of microorganism and suspension is reached 100%, the rejection of larger molecular organics is reached 70%-80%.Producing water turbidity and be almost 0, water outlet need not separately do coagulating sedimentation etc. and processes, and can be directly entered advanced treatment unit.Effluent quality depends on the distribution of membrane aperture, is not affected by upflow velocity in reactor and turbulent extent.
Can be preferably as concrete scheme of the present utility model: in described Sludge Bed, be provided with water-locator, described water-locator connects Three links theory, it is provided with internal circulation pump on described Three links theory, the import of water-locator is provided with intake pump, anaerobic reactor body is additionally provided with connect Sludge Bed and top-film Disengagement zone be lowered back to flow tube.
Can be preferably as concrete scheme of the present utility model: be provided with gas dispersion apparatus, aerogenesis collecting pipe below described built-in membrane module, aerogenesis collecting pipe is collected gas and is delivered to gas-liquid separator.
By above-mentioned setting, inside and outside film case, form gas, liquid, solid three-phase recycle stream, increase turbulent extent and the souring of face of system, form the cross-flow filtration of film, improve membrane flux, up to 40-100L/ (m2.h).Simultaneously for anaerobic system, aeration uses biogas rather than air.The biogas collected after three phase separator is collected and built-in membrane module washes away, import gas-liquid separator through aerogenesis collecting pipe and top gas collecting pipe respectively and carry out gas-liquid separation, the biogas being isolated to drains into gas storage holder, after Marsh gas compression machine and gas vacuum tank, it is sent to gas dispersion apparatus carries out washing away of face, it is achieved the circulation stirring effect of biogas.
Can be preferably as concrete scheme of the present utility model: described built-in membrane module is hollow fiber form or board-like, film functional layer material is one or more in PP, PVDF, PES, PA, PS film of hydrophilic modifying.
By above-mentioned setting, the supermicro filtration membrane that transparent performance is good, antifouling property is good, mechanical strength is high, corrosion resistance is strong, effluent quality is good, pore-forming molecular cut off 5000-300000
Dalton
Can be preferably as concrete scheme of the present utility model: the bottom of described Sludge Bed is provided with mud valve.
By above-mentioned setting, it is simple to the discharge of mud.
Can be preferably as concrete scheme of the present utility model: on described top-film Disengagement zone, be provided with Pressure gauge.
By above-mentioned setting, utilize backwash water pump that film is carried out interval backflushing and wash, produce water and backwash by temporally being switched over control by backwash motor-driven valve and product water motor-driven valve.Pressure gauge is installed in top-film Disengagement zone simultaneously, vacuum meter is installed, to confirm that degree is blocked up in the dirt of film, it is considered to the need of carrying out restorative cleaning in the suction side of suction water pump
In sum, the utility model has the advantages that have high granule sludge concentration, high reaction rate and high volumetric loading, use built-in film that mixed liquor is carried out mud-water separation, rejection to anaerobic sludge, suspension is 100%, the rejection of the macromolecular substances such as colloid is reached 70%-80%, effluent quality is good, turbidity is close to 0, and separating effect is not affected by rising Flow Velocity and turbulent extent, solve mixing intensity in reactor, contradiction between treatment effect and effluent quality well;The mode circulated in using self-produced biogas carries out the aeration of film and washes away, and unnecessary biogas torch burning or utilization do not produce potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the equipment connection structure figure of the present embodiment.
In figure 1, intake pump;2, water-locator;3, three phase separator;4, aerogenesis collecting pipe;5, gas dispersion apparatus;6, built-in membrane module;7, it is lowered back to flow tube;8, top gas collecting pipe;9, gas-liquid separator;10, gas storage holder;11, Marsh gas compression machine;12, gas vacuum tank;13, gas flowmeter;14, vacuum meter;15, Pressure gauge;16, suction water pump;17, spinner flowmeter;18, internal circulation pump;19, mud valve;20, Sludge Bed;21, top-film Disengagement zone;22, anaerobic reactor body;23, backwash water tank;24, backwash water pump;25, backwash motor-driven valve;26, water motor-driven valve is produced.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the built-in UF membrane formula anaerobic sludge inner circulation reactor A-MBR that the utility model provides, including intake pump 1, water-locator 2, three phase separator 3, aerogenesis collecting pipe 4, gas dispersion apparatus 5, built-in membrane module 6, it is lowered back to flow tube 7, top gas collecting pipe 8, gas-liquid separator 9, gas storage holder 10, Marsh gas compression machine 11, gas vacuum tank 12, gas flowmeter 13, vacuum meter 14, Pressure gauge 15, suction water pump 16, spinner flowmeter 17, internal circulation pump 18, mud valve 19, anaerobic reactor body 22, backwash water tank 23, backwash water pump 24, backwash motor-driven valve 25, produce water motor-driven valve 26.
Former water is lifted into water-locator 2 by intake pump 1, it is uniformly distributed on cross section at the bottom of anaerobic reactor body 22 pond, it is sufficiently mixed with anaerobic grain sludge during up-flow afterwards, organic matter contained in waste water is adsorbed by anaerobe in Sludge Bed 20 and degrades, organic matter experienced by hydrolysis acidification, hydrogenesis and acetogenesis and methane phase stage in Sludge Bed 20, larger molecular organics is decomposed into small organic molecule such as alcohol and fatty acid successively, and dissolubility small organic molecule is finally decomposed to CO2 and CH4.Containing anaerobic grain sludge, floc sludge, suspension, remain the waste water of undegraded organic matter and biogas to be arranged on the three phase separator 3 of anaerobic reactor body 22 middle and upper part and separated, biogas is transported in gas-liquid separator 9 by aerogenesis collecting pipe 4, granule sludge and the floc sludge of the big particle diameter of part that sedimentation function is good are back in Sludge Bed 20 after the settling zone of three phase separator 3 is precipitated again, primary water containing a small amount of floc sludge enters top-film Disengagement zone 21, filtration is retained through built-in membrane module 6 under the dynamic action that suction water pump 16 provides, obtain as clear as crystal product water, next unit is directly gone to continue with.
In order to improve the mixability of water inlet and anaerobic sludge, improve organic degradation rate, make in the water of inflow top-film Disengagement zone 21 containing relatively low organic concentration, inner circulating reflux pump is set at the bottom 0.5-1.0m of three phase separator 3, by the mixed-liquor return containing floc sludge and granule sludge to water inlet, it is achieved mix more completely and react.This way is not required to arrange spoil disposal point in the middle and upper part in mud district, only need to arrange mud valve 19 in the bottom of anaerobic reactor body 22, periodically discharges the excess sludge through inorganic stabilizers.
The bottom of built-in membrane module 6 is provided with gas dispersion apparatus 5, and compressed biogas is gathered in the headroom of anaerobic reactor body 22 by rising after face is washed away by bubble in gas dispersion apparatus 5 formation, is imported in gas-liquid separator 9 by top gas collecting pipe 8.Liquid in gas-liquid separator 9 is back to water-locator 2 carries out interior circulation by being lowered back to flow tube 7.Isolated biogas drains into gas storage holder 10, and a part is sent to gas dispersion apparatus 5 after Marsh gas compression machine 11 and gas vacuum tank 12 and carries out washing away of face, unnecessary biogas is carried out torch burning or utilization.
In order to prevent and delay the pollution of film, according to different membrane module forms, need to utilize backwash water pump 24 that film is carried out interval backflushing and wash, produce water and backwash by temporally being switched over control by backwash motor-driven valve 25 and product water motor-driven valve 26.Pressure gauge 15 is installed in top-film Disengagement zone 21 simultaneously, vacuum meter 14 is installed, to confirm that degree is blocked up in the dirt of film, it is considered to the need of carrying out restorative cleaning in the suction side of suction water pump 16.
The built-in UF membrane formula anaerobic sludge inner circulation reactor A-MBR that the utility model provides, it is characterized in that the built-in membrane module 6 using aperture 0.05-0.1 μm is separating medium, anaerobe in reactor, suspension and the big undegraded colloidal substance of molecule etc. are retained, the rejection of microorganism and suspension is reached 100%, organic rejection is reached 70%-80%.Producing water turbidity and be almost 0, water outlet need not separately do coagulating sedimentation etc. and processes, and can be directly entered advanced treatment unit.
The built-in UF membrane formula anaerobic sludge inner circulation reactor A-MBR that the utility model provides, it is characterised in that reaction Fen Liangge district: Sludge Bed 20 and top-film Disengagement zone 21, with three phase separator 3 as line of demarcation.Base sludge bed 20 district sludge concentration is up to 30-40g/L, and major part is the granule sludge that particle diameter is big, density is big, settling property is good, has high organic matter degradation rate and high volumetric loading.Top-film Disengagement zone 21 sludge concentration is relatively low, and the floc sludge that predominantly sedimentation function is poor, sludge concentration, at below 5000-8000mg/L, places built-in membrane module 6 wherein, to separated through three phase separator 3 containing part floc sludge and carry out separation of solid and liquid through the waste water of anaerobic degradation.
The built-in UF membrane formula anaerobic sludge inner circulation reactor A-MBR that the utility model provides, it is characterised in that two reaction zones each realizes interior circulation up and down, it is not necessary to outer circulation.For base sludge bed 20 district, have in two and circulate: one is to set return duct at the bottom 0.5-1.0m of three phase separator 3, by inner circulating reflux pump, by the mixed-liquor return containing floc sludge and granule sludge to water inlet, distributed to anaerobic reactor body 22 bottom transverse cross section by water-locator 2 after mixing with former water, it is achieved mix more completely and react;Two to be the liquid that separates with biogas in gas-liquid separator 9 be back to water-locator 2 and carry out interior circulation and again participate in reaction by being lowered back to flow tube 7 for it.For top-film Disengagement zone 21, the air lift effect of the biogas stream formed by gas dispersion apparatus 5, gas, liquid, solid three-phase recycle stream is formed inside and outside film case, the turbulent extent of increase system and the souring of face, form the cross-flow filtration of film, improve membrane flux, up to 40-100L/ (m2.h).Simultaneously for anaerobic system, aeration uses biogas rather than air.The biogas collected after three phase separator 3 is collected and built-in membrane module 6 washes away, import gas-liquid separator 9 through aerogenesis collecting pipe 4 and top gas collecting pipe 8 respectively and carry out gas-liquid separation, the biogas being isolated to drains into gas storage holder 10, after Marsh gas compression machine 11 and gas vacuum tank 12, it is sent to gas dispersion apparatus 5 carries out washing away of face, it is achieved the circulation stirring effect of biogas.
A-MBR device can integrate the excellent separating property of film and the anaerobic biochemical high efficiency to organic matter degradation, compared with conventional granule sludge or floc sludge anaerobic reactor, has a significant advantage:
(1) good effect of separating solid from liquid, goes out aqueous suspension and turbidity close to zero, and can remove bacterial virus.Film is that separation of solid and liquid provides absolute guarantee, and the quality of draining does not associate with the settleability of biological floe.
Simultaneously because effluent quality is good, it is not necessary to separately set degassing pond and sedimentation basin carries out separation of solid and liquid, can directly connect thereafter advanced treatment unit such as artificial swamp etc., make the treatment effeciency of system be greatly improved.
(2) the efficient crown_interception of film makes microorganism be completely trapped in reactor, it is achieved that HRT with SRT is kept completely separate, and makes operation control more flexibly, stablize.
(3) no matter being floc sludge or granule sludge, can effectively be trapped in the reactor, not risen Flow Velocity by current be affected, and the microorganism concn in reactor is fully controllable, keeps high microorganism concn, and anti impulsion load ability is higher.
(4) be conducive to growth and the breeding longer high microorganism of food chain, the good syntaxial system of the various floras formed such as anaerobic organism film can be formed therein, can be strong to the catabolism ability of big molecule hardly degraded organic substance and noxious material.
(5) under low sludge loading, major part matrix is used to maintain growth of microorganism needs substantially, and surplus sludge volume greatly reduces, and has been stablized, sludge yield 0.04-0.10d-1.
(6) floor space is little.Can maintain the microbial biomass of high concentration in reactor, volumetric loading is high, and reactor is generally vertically arranged, the little 20%-30% of the more traditional anaerobic reactor of floor space.
(7) designed by the optimization of system, make film have stronger contamination resistance, maintain bigger membrane flux.
The utility model while reaching above-mentioned purpose, prevent with lessening membrane fouling, membrane flux and filtration driving force in terms of consideration and design as follows.
(1) prevent and lessening membrane fouling
In the application of film, except require to have maintained produce water water quality and high membrane flux in addition to, it is to avoid the main body that concentration polarization and lessening membrane fouling are eternal during being always engineer applied.In order to delay and prevent fouling membrane, the measure that the utility model is taked has: increase the less turbulence of current, forms cross-flow filtration;Bubble gas distribution apparatus in the lower section of membrane module is arranged, forms airflow scouring effect;Membrane module configuration interval backflushing for multi-form washes system.
During A-MBR plant running, the suspension of UF membrane is mainly anaerobe flocculate (such as zoogloea and der Pilz) and anaerobe metabolin (such as extracellular polymeric, dissolved phenols isocolloid material and the big molecule of dissolubility), wherein the content of microbial floc accounts for the overwhelming majority, it forms the cake layer of provisional pollution on film surface, and microbe metabolite easily adsorbs and forms permanent covering in film surface and duct.The mode of cross-flow filtration of taking the utility model effectively reduces cake layer and increases and the osmotic resistance that brings and fouling membrane.
Trapped substance accumulation near film can make its concentration in this region higher than solution concentration, for cross-flow filtration, flux is the highest, the solute of borderline region accumulation is the most, thus concentration gradient is the biggest, and reversely diffusion is the fastest, the increase of membrane flux also brings along the increase of accumulation of soluble substances speed, concentration polarization phenomenon occurs, and slightly soluble solute is prone to separate out on film surface simultaneously, forms the gel layer of hypotonicity.Because the concentration gradient making film both sides increases, concentration polarization even can promote to treat that trapped substance passes through film.The utility model by increase less turbulence and under relatively small throughput run control concentration polarization.It addition, the membrane aperture used is 0.05-0.1 μm, for retaining the component process less than 0.1 μm particle, concentration polarization phenomenon is more obvious, and the particle diameter of anaerobism floc sludge is about 0.02-0.2mm, and therefore this device form is substantially absent from concentration polarization phenomenon.
(2) coordinating and unifying of the Technical Economy of membrane flux and fouling membrane
Membrane flux is determined by driving force and drag overall, and drag overall includes membrane resistance and film surface area resistance.For certain film, membrane resistance is certain, and film surface area resistance increases along with the accumulation of water inlet pollutant, and when driving force one timing, accumulative speed is relevant with membrane flux, and flux is the biggest, and it is the fastest that pollutant is accumulated.When the permeation flux of film is less than certain flux, the boundary layer of film forms the speed of cake layer and is approximately zero, the filtration resistance of film the most in time or the change of transmembrane pressure and change;When the permeation flux of film is more than this flux, the boundary layer of film will form filter cake step by step, the prolongation in time of the filtration resistance of film or the increase of transmembrane pressure and increase, this flux is critical membrane flux.
When flux is less than critical membrane flux, along with the increase membrane flux of operation pressure linearly increases and reversible, but, when exceeding critical flux, when reducing operation pressure, flux will not then return to original value, and when even membrane flux is below critical flux, the pollution of film can be controlled effectively, but when membrane flux is more than critical flux, fouling membrane aggravation will cause membrane flux to recover.
The utility model passes through test determination membrane flux and decay, the relation curve of recovery, to determine suitable membrane flux when design, it is ensured that the coordinating and unifying of the Technical Economy of membrane flux and fouling membrane.
(3) filtration driving force
The driving force of supermicro filtration membrane is barometric gradient.When transmembrane pressure (TMP) is less than critical pressure value, membrane flux increases with the increase of pressure reduction;When transmembrane pressure is higher than critical pressure, membrane flux is little with the change of pressure reduction.The critical pressure difference of general microfiltration membranes and milipore filter respectively may be about 120kPa and 160kPa.
For built-in doughnut curtain type membrane, general work pressure PP be-0.01MPa to-0.03MPa, PVDF be-0.03MPa extremely-0.05MPa.
(4) aerogenesis and airflow scouring
The volumetric loading of A-MBR can accomplish 8-50kgCOD/(m3.d), methane production is about 0.16-0.35Nm3CH4/kgCOD, and corresponding biogas output is about 0.32-0.7Nm3(CH4+CO2)/kgCOD, reality be 0.45-0.5Nm3 biogas/
KgCOD, bottom MLSS concentration is less than 10000-15000mg/L up to 20-50kg/m3, the sludge concentration of clear water zone, top.
Bubble gas disperser in the bottom of membrane module is installed, each film case arranges flow apron, the powerful motive force that bottom film, aeration produces makes gas and water, activated sludge three-phase mixed liquor formation high-speed circulating stream in biological reaction pool, and the shearing force of circulating water flow generation and lifting force promote the removal of cake layer.And by reducing spacing between membrane component, under same current and airflow function, the fluidised form of formation is more beneficial for the flushing on film surface.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.
Claims (8)
1. a built-in UF membrane formula anaerobic sludge inner circulation reactor, it is characterized in that: include anaerobic reactor body (22), three phase separator (3), it is that anaerobic reactor body (22) is divided into Sludge Bed (20) and top-film Disengagement zone (21) by line of demarcation with three phase separator (3), it is additionally provided with gas-liquid separator (9) on described anaerobic reactor body (22), it is connected between described gas-liquid separator (9) with top-film Disengagement zone (21) and has the first loop, gas storage holder (10) it is disposed with on described first loop, Marsh gas compression machine (11), gas vacuum tank (12), gas flowmeter (13).
Built-in UF membrane formula anaerobic sludge inner circulation reactor the most according to claim 1, it is characterized in that: in described top-film Disengagement zone (21), be provided with built-in membrane module (6), the upper connection of described built-in membrane module (6) has the second loop, described second loop is disposed with vacuum meter (14), produces water motor-driven valve (26), suction water pump (16), spinner flowmeter (17), backwash water tank (23), backwash water pump (24), backwash motor-driven valve (25).
Built-in UF membrane formula anaerobic sludge inner circulation reactor the most according to claim 2, it is characterised in that: the pore diameter range of described built-in membrane module (6) is 0.05-0.1 μm.
4. according to the built-in UF membrane formula anaerobic sludge inner circulation reactor described in Claims 2 or 3, it is characterized in that: in described Sludge Bed (20), be provided with water-locator (2), described water-locator (2) connects Three links theory, internal circulation pump (18) it is provided with on described Three links theory, the import of water-locator (2) is provided with intake pump (1), and what anaerobic reactor body (22) was additionally provided with connection Sludge Bed (20) and top-film Disengagement zone (21) is lowered back to flow tube (7).
Built-in UF membrane formula anaerobic sludge inner circulation reactor the most according to claim 4, it is characterized in that: described built-in membrane module (6) lower section is provided with gas dispersion apparatus (5), aerogenesis collecting pipe (4), and aerogenesis collecting pipe (4) is collected gas and is delivered to gas-liquid separator (9).
Built-in UF membrane formula anaerobic sludge inner circulation reactor the most according to claim 3, it is characterized in that: described built-in membrane module (6) is hollow fiber form or board-like, and film functional layer material is one or more in PP, PVDF, PES, PA, PS film of hydrophilic modifying.
Built-in UF membrane formula anaerobic sludge inner circulation reactor the most according to claim 1, it is characterised in that: the bottom of described Sludge Bed (20) is provided with mud valve (19).
Built-in UF membrane formula anaerobic sludge inner circulation reactor the most according to claim 1, it is characterised in that: it is provided with Pressure gauge (15) on described top-film Disengagement zone (21).
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