CN201390676Y - Micro-grid dynamic membrane bioreactor for continuously updating dynamic membrane - Google Patents

Abstract

The utility model relates to a micro-grid dynamic membrane bioreactor for continuously updating a dynamic membrane. The micro-grid dynamic membrane bioreactor is characterized in that a container is divided by a separating porous plate into an upper aerobic zone and a lower anoxic zone; an aerator group is arranged on the separating porous plate; a micro-grid assembly consists of a wave-shaped micro-grid body, a sleeve shell, a bottom grid, 2-3 layers of ceramic beads uniformly spread on the bottom grid, a backwash spray nozzle and an air blast washing head which are respectively arranged at the upper side and the lower side of the gird body and on the same plane, a hollow shaft tube for driving the backwash spray nozzle and the air blast washing head to rotate continuously, and a rotary driving mechanism; the micro-grid assembly is horizontally arranged at the top of a jar; the hollow shaft tube of a separating plate is arranged at the center of the micro-grid body; the shaft tube portion at the upper part of the separating plate is connected with the rotary driving mechanism, a water source and the backwash spray nozzle; the shaft tube portion at the lower part of the separating plate is connected with an air source and the air blast washing head; and the lower end of the hollow shaft tube is rotatably and hermetically connected with the aerator group. The micro-grid dynamic membrane bioreactor has the advantage that the bioreactor improves the denitrification and dephosphorization effect, achieves the effect of microfiltration solid-liquid separation and optimizes and simplifies a power system and a control system while ensuring the effluent flux.

Description

Upgrade the microgrid bioreactor of dynamic membrane of Dynamic Membrane continuously

Technical field

The utility model relates to a kind of dirt, wastewater treatment equipment-membrane bioreactor, relates in particular to a kind of microgrid bioreactor of dynamic membrane that will have the bio-reactor of intensified anti-nitrated effect and reach the synthetic continuous renewal Dynamic Membrane of making of membrane module of micro-filtration solid-liquid separation effect with environmental mineral, microbial bacteria micelle and fine filter screen (industry general designation microgrid) synergy.

Background technology

The research and development of membrane bioreactor (Membrane Bio Reactor is called for short MBR) have only nearly 30 years history, and real sizable application was less than 20 years.It is a kind of novel water treatment device that dirt, biological wastewater treatment technology and membrane separation technique are combined.High-quality solid-liquid separation effect that membrane biological reactor process had and high density, long mud active sludge in the age removal effect higher to organism make it become the optimization synthetic water treatment process that a kind of effluent quality is good, floor space is little, surplus sludge volume is low, easily be automated.In water treatment field, especially obtaining using comparatively widely aspect dirt, the waste water reclaiming engineering.Yet exist following shortcoming and obstacle in MBR technology popularization process: (1) MBR adopts special-purpose membrane pore size to hold back mud at micro-filtration or hyperfiltration membrane assembly below 1 micron, and aquifer yield is low, is difficult to satisfy the requirement of large-scale application; (2) traditional membrane module cost height, and the control process relative complex of operation make initial cost higher; (3) membrane module occurs because of concentration polarization, pollution easily, wears out its flux to be descended and produce and stop up, and causes work-ing life low; Especially for making filtered water pass through membrane module, high pressure suction water pump and associated function unit need be set in using, maintenance simultaneously need be than high-technology condition, so operation energy consumption, expense are higher, have limited fairly large application and the popularization of membrane module.

In recent years, the MBR field begins to occur to the Dynamic Membrane Research of Separation Technique, be characterized in common poroid material typically refer to the aperture more than 400 orders as Stainless Steel Cloth, nylon mesh, the chemical fibre silk screen, fine filter screen such as non-woven fabrics (industry general designation microgrid) replaces traditional micro-filtration or ultra-filtration membrane to make micro-net component, during use, micro-net component places bioreactor mixed solution, in the working cycle of sewage disposal, along with the carrying out of biochemical reaction and filtration procedure, microbial bacteria micelle precipitation is also referred to as Dynamic Membrane attached to forming the biomass layer that comes off of periodically growing on the microgrid.The formation of this film has improved the strainability as the microgrid medium of supporter, and Dynamic Membrane has activity, flexibility and adsorptivity, and the height of its disintegrate-quality and the size of flux are decided by activity, density, the thickness of film and pass through pressure; Under certain control condition, Dynamic Membrane can reach and the above-mentioned solid type tradition MBR technology identical micro-filtration separating effect of membrane module, but the transmembrane pressure of its convection cell requires well below traditional MBR membrane module, and the membrane module material is easy to get, cheap, engineering cost be can significantly reduce, large-scale application and popularization therefore are easy to.Yet this technology is still immature at present, still is in development.Existing Dynamic Membrane micro-net component is generally planar shaped, is similar to classic flat-plate shape MBR membrane module, and prolongs with the cross flow filter of conventional film assembly MBR technology and control Dynamic Membrane thickness and reduce film and pollute and prolong with shutdown interruption backwash mode and guarantee membrane flux.Cross-flow is to utilize turbulent shear and souring to come the attached collection of contaminant restraining matter on the film surface, it is very effective that this reduces pollution for the MBR membrane module, but concerning to utilize pollution substance to carry out to have a negative impact the activity of solid-liquid separation and the flexible Dynamic Membrane, turbulent flow makes the quality softness, a little less than filter screen sticking power, especially generate in experience, grow up, the easier disengaging microgrid of biomass layer that aperiodicity comes off itself will occur in ripe, weak, the dead metabolic processes, cause the irregular leakage of suspended matter; Cross-flow is except that embodying the surface shear souring, there is normal vibration effect simultaneously to face, this normal vibration makes coating growth evenly impossible, the face centre is difficult to form effective gel coat because of amplitude is too high, therefore, the Dynamic Membrane that cross-flow mode is moved is to the dissolved organic matter of the larger molecular weight poor effect of damming; Cross-flow is sheared to wash away with the normal vibration effect and is also very easily made dynamic rete " leak " occur, makes the irregular fluctuation of delivery turbidity and is difficult to be controlled at higher level, and total plate count exceeds standard; Especially in use because of rete thickens, it is too much to adhere to dirt, and flux descends needs the enough water or the mixed water of gas of big flow when carrying out back flushing, make the back flushing plant capacity big, and resource cost, energy consumption height are interrupted and use, the lness ratio of plant height; After the back flushing,, make water rate be difficult to improve because of producing the interference water of a large amount of filtered during the Dynamic Membrane regeneration.These disadvantageous effects cause that existing Dynamic membrane is in that effluent quality is stable inadequately, membrane area is difficult to amplify, water rate is lower, still can not realize the technical bottleneck of large-scale application, have limited the engineering utilization of Dynamic membrane.In addition, the form of existing membrane bioreactor is single, and the reactor outside is located in the oxygen-starved area, and structure is complicated, and is relatively poor to the total nitrogen total phosphorus removal effect.Above-mentioned all problems have limited membrane bioreactor and have used more widely.

How realizing adopting cheaply, the Dynamic Membrane isolation technique can reach traditional MBR membrane module effluent quality, improve flux and water rate again, reach to optimize and simplify power and Controlling System minimizing energy consumption, the purpose that reduces cost, and improve biochemical effect, especially the denitrogenation dephosphorizing effect becomes the industry concerned issue.

The utility model content

Main purpose of the present utility model is at the problems referred to above, a kind of bio-reactor that will have an intensified anti-nitrated effect is provided and reaches with environmental mineral, microbial bacteria micelle and microgrid synergy that cost is low, volume is little, effluent quality is good, flux height, the micro-net component that water rate is high combine, provide a kind of good denitrogenation and dephosphorization effect, and reach the micro-filtration solid-liquid separation effect, guaranteeing to optimize the microgrid bioreactor of dynamic membrane of the continuous renewal Dynamic Membrane of simplifying power and Controlling System on the effluent flux basis.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of microgrid bioreactor of dynamic membrane of continuous renewal Dynamic Membrane, mainly comprise and hold the container that contains the zoogleic dirt of microorganism, waste water mixed solution, the aerobic zone of band aerator group, through receiving the clear water zone that mill weir catchments, place the micro-net component of aerobic zone carrying Dynamic Membrane, former water water inlet pipe, the clear water rising pipe, it is characterized in that: described container is a circle tube tank, separating orifice plate by the tank body that has some through holes in the tank body is divided into two-layer up and down, the upper strata is described aerobic zone, and lower floor is made as the oxygen-starved area, and described waterfall gas device group is arranged at the upper face of described separation orifice plate; But described micro-net component is the micro-net component of continuously on-line updating dynamic membrane, and is main by the oblate cylindricality microgrid dictyosome with setback shape wire side, the all sheath bodies of dictyosome ring, seal the spacer screen of described microgrid dictyosome bottom, evenly be layed on the spacer screen layer 2-3 can under the last thrust between microgrid dictyosome and spacer screen dancing haydite ball, along microgrid dictyosome end face diameter above the microgrid dictyosome and below the back flushing shower nozzle that is positioned at same perpendicular and the jet head that washes away that are provided with respectively, drive described back flushing shower nozzle and the jet head that washes away with continuous hollow central siphon that rotates of the rotating speed of 45-120min/r and central siphon rotating drive mechanism formation; Described micro-net component horizontal seal is connected in the tank body top, and the top of described microgrid dictyosome is open, is clear water zone, and clear water is discharged by the receipts mill weir that is arranged on described sheath body top; In establish dividing plate, closed at both ends described hollow central siphon be rotatably connected on microgrid dictyosome center, the tubular shaft pipe coupling rotary drive mechanism on dividing plate top and water source also are tightly connected with described back flushing shower nozzle; The tubular shaft pipe coupling source of the gas of the lower partition, and be tightly connected with the jet head that washes away, hollow central siphon lower end is rotated, is sealedly connected on the described waterfall gas device group.

Described oblate cylindricality microgrid dictyosome with setback shape wire side is to be the microgrid stack of the different apertures of 300～500 purposes and to be configured as the dictyosome that is in turn connected to form by a plurality of concentric annular V-shaped grooves according to skeletal fixation by the multilayer aperture; The aperture of described spacer screen is 50～100 orders, and the space between microgrid dictyosome and the spacer screen is separated orifice plate by a plurality of nets and is separated into some sealings solarium, and described haydite ball is that diameter is the circular haydite ball of 4～10mm and splits at described each close-network indoor; Described back flushing shower nozzle is to be made of water pipe and a plurality of fluid jetting heads with the corresponding setting of each V-shaped groove of connecting below thereof, and the shape of described fluid jetting head and V-shaped groove shape are coincide, and insert respectively in each V-shaped groove, and its both sides that recline the V-shaped groove groove face have posticum; The described jet head that washes away is that the corresponding described spacer screen of side is provided with the gas ejector pipe of some production wells thereon.

Described water source is a clear water zone; The pneumatic pump that described source of the gas is taken from the aerator source of the gas or set up, described rotary drive mechanism comprises motor, step-down gear, the last swivelling union that is arranged at receipts mill weir top, the movable end of swivelling union is gone up in the motor via reducer connection, and last swivelling union movable end connects described hollow central siphon and rotates synchronously by moving back flushing shower nozzle of tubular shaft pipe racks and the jet head that washes away; The inboardend of last swivelling union is by water pump water outlet pipe coupling high-pressure hydraulic pump, and high-pressure hydraulic pump connects clear water zone by pump water inlet, and pumping line is provided with variable valve; Rotate, be tightly connected by the following swivelling union and the waterfall gas device group that are arranged on the described waterfall gas device group in described hollow central siphon lower end.

At least two backflow selector switchs of described external container setting, the top of each selector switch that refluxes links to each other with the top of aerobic zone, the bottom links to each other with the bottom of oxygen-starved area, the middle part is provided with described former water water inlet pipe, the top is provided with the releasing tube that is higher than described micro-net component top and opening suitable for reading.

During use, above-mentionedly be contained in the particle diameter that should contain in the zoogleic dirt of microorganism, the waste water mixed solution that contains in the container one or more are used to form the environment mineral material of microgrid packing layer in 100 orders～400 purposes by its weight percent 5 ‰～1%; Described environment mineral material is diatomite, zeolite, sepiolite, Attapulgite, vermiculite and activity charcoal powder.

The beneficial effects of the utility model are:

(1) adopts V-shaped groove formula setback shape micro-net component, can provide a kind of turbulent flow is promptly stablized up-flow into laminar flow dead-end filtration mode that becomes, under the acting in conjunction of V-shaped groove, sealing spacer screen, haydite ball, separation orifice plate and receipts mill weir, created and be suitable for Dynamic Membrane generation, metabolic good stable waterpower environment, it can effectively avoid turbulent flow vibration cause dynamic rete generate inhomogeneous, easily come off and produce " leak " problem, as stabilizing and increasing the assurance of providing the foundation property of effluent quality; (2) adopt V-shaped groove formula setback shape micro-net component, improved the membrane filtration area under the unit volume, improve flux and reduce device volume, especially compare with traditional MBR membrane module, the microgrid price is low, significantly reduces manufacturing cost; (3) adopt back flushing shower nozzle and the jet head that washes away of being located at the slow rotation in the same perpendicular to realize the continuous online backflushing of microgrid Dynamic Membrane is washed and sheared and peel off, since speed slowly and moment only to washing away along the local Dynamic Membrane on the microgrid of pipeline scanning area, therefore give the growth of new Dynamic Membrane with enough perdurabilities, especially adopt the jet head that washes away to close with the haydite chou, random jump by haydite ball in the close-network reaches abundant shearing, the water entering surface of friction microgrid, film is fully come off, this water, gas synergy reaches old film and removes and the new film optimum alternate cycles of growing, effectively control thickness, both guaranteed flux, do not start a leak again, prevent that big grain suspension dirt from passing filter screen and guaranteeing that effluent quality is good, the water rate height; When (4) using, add environment mineral material in the mixed solution, after the dynamic rete on the microgrid was by instantaneous washing open, environment mineral material was in time filled up the microgrid hole under the hydraulic pressure effect, suppress suspended matter and fine colloidal solid and pass microgrid, make to disturb to be reduced to minimum level; Environment mineral material directly is wrapped in easier peeling off on the microgrid as the microgrid packing layer than organism in addition, helps the protection to micro-net component, makes it the degree of depth not occur and pollutes, and therefore reduces the energy consumption of back flushing; (5) add the water of certain pressure and enough big flow with tradition or interruption backwash mode that gas mixes water is compared, the permeate water of the utility model use Dynamic Membrane because of consumption is extremely low, has very high effective permeability rate as backwashing water; Compare with the high gas-water ratio of employing cross-flow rinse mode in the existing membrane bioreactor, on-line cleaning mode of the present utility model, requirement to air demand is no more than normal nitrated needed air demand, plant capacity is also far below traditional membrane bioreactor, significantly economize on resources and install cost, cut down the consumption of energy, and to make the backwashing water plant factor be 100%.This continuous on-line cleaning structure efficiently solves existing effective permeability rate and crosses low and the too high problem of back flushing lness ratio of plant.(6) bio-reactor that moves as the up-flow mode, the employing upper strata is an aerobic zone, lower floor is the levels structure of oxygen-starved area, not only cooperate with micro-net component work is organic, and under waterfall gas gas lift suction function, mixed solution sucks aerobic zone, and forming mixed solution reciprocation cycle mobile does not have the blowback stream mode, need not add other power and equipment, cut down the consumption of energy and reduce take up an area of and capital construction investment on embody the optimization effect.(7) the outside backflow selector switch that connects a plurality of band releasing tubes of bio-reactor for the denitrification flora provides nutritive substance, satisfies the demand of denitrification process to carbon source, creates and intensified anti-nitrated environment, improves the total nitrogen removal effect; Possess the biological selector function simultaneously, thread fungus can be controlled at certain level, guarantee effluent characteristics.

Description of drawings

Fig. 1 is that master of the present utility model looks sectional structure synoptic diagram (the back flushing shower nozzle is positioned at same plane with the receipts mill weir);

Fig. 2 is the structure for amplifying synoptic diagram of V-shaped groove formula setback shape micro-net component among Fig. 1;

Fig. 3 is plan structure synoptic diagram of the present utility model (the back flushing shower nozzle staggers with the receipts mill weir).

Among the figure: 1 micro-net component, 11 pump water inlets, 12 bearings, 13 high-pressure hydraulic pumps, 14 pumping lines, 15 variable valve, swivelling union on 161,162 times swivelling unions, 17 step-down gears, 18 motors, 19 hollow central siphons, 100 back flushing shower nozzles, 110 dividing plates, 111 receive mill weir, 112 rising pipes, 113 rollers, 114 water pipes, 115 fluid jetting heads, 116 holding bolts, 117 press strips, 118 keel, 119 posticums, 120 aerator pneumatic tubes, 121 nets are separated orifice plate, 122 annular support plates, 123 haydite balls, the 124 jet heads that wash away, 125 production wells, 126 spacer screens, 127 top outer ring retaining plates, 128 microgrid dictyosomes, 129 sheath bodies, 130 supports, 131 bottom outer ring retaining plates, annular retaining plate in 132 bottoms, annular retaining plate in 133 tops, 2 backflow selector switchs, 21 releasing tubes, 22 pipe connectings, 23 former water water inlet pipes, 24 pipe connectings, 3 containers, shore pipe 31,4 aerobic zones, 5 aerator groups, 6 tank bodies are separated orifice plate, 7 oxygen-starved areas, 8 clear water zones.

Below in conjunction with drawings and Examples the utility model is described in detail.

Embodiment

Fig. 1～Fig. 3 illustrates a kind of microgrid bioreactor of dynamic membrane of continuous renewal Dynamic Membrane, as shown in the figure, mainly comprise holding and contain the zoogleic dirt of microorganism, the container 3 of waste water mixed solution, the aerobic zone 4 of band aerator group, through receiving the clear water zone 8 that mill weir 111 catchments, place the micro-net component 1 of aerobic zone carrying Dynamic Membrane, former water water inlet pipe 23, clear water rising pipe 112, it is characterized in that: said vesse 3 is circle tube tanks, separating orifice plate 6 by the tank body that has some through holes in the tank body is divided into two-layer up and down, the upper strata is described aerobic zone 4, in this zone pollutent is carried out aerobic biochemistry and clears up; Lower floor is made as oxygen-starved area 7, pollutent is carried out mainly carrying out biochemical denitrification process when anaerobic biological is cleared up, further to clear up nitrogen, phosphorus substance in this zone; Above-mentioned waterfall gas device group 5 is positioned at the bottom of aerobic zone, is arranged at the upper face that tank body is separated orifice plate 6, provides aerobic biochemistry, nitrated needed oxygen by it, and gas lift power and reactor pressure are provided simultaneously; But above-mentioned micro-net component 1 is the micro-net component of continuously on-line updating dynamic membrane, and is main by the oblate cylindricality microgrid dictyosome 128 with setback shape wire side, the all sheath bodies 129 of dictyosome ring, seal the spacer screen 126 of described microgrid dictyosome bottom, the layer 2-3 that evenly is layed on the spacer screen 126 can be at microgrid dictyosome 128 and 126 dancing haydites of spacer screen ball 123 under last thrust, along microgrid dictyosome 128 end face diameters above the microgrid dictyosome and below the back flushing shower nozzle 100 that is positioned at same perpendicular that is provided with respectively and jetly wash away 124, drive described back flushing shower nozzle and the jet head that washes away with continuous hollow central siphon 19 that rotates of the rotating speed of 45-120min/r and central siphon rotating drive mechanism formation.Above-mentioned microgrid dictyosome 128 is to be the microgrid stack of the different apertures of 300～500 purposes and to be configured as the dictyosome that is in turn connected to form by a plurality of concentric annular V-shaped grooves according to skeletal fixation by the multilayer aperture; The aperture of above-mentioned spacer screen 126 is 50～100 orders, and the material of microgrid and spacer screen can adopt Stainless Steel Cloth, nylon mesh, chemical fibre silk screen or non-woven fabrics.In actual fabrication, space between microgrid dictyosome 128 and the spacer screen 126 is separated orifice plate 121 by a plurality of nets and is separated into some sealings solarium, and it is the circular haydite ball of 4～10mm that above-mentioned haydite ball adopts commercially available diameter, and splits at above-mentioned each close-network indoor, in this example, be provided with three layers of haydite ball; Above-mentioned skeleton is mainly separated orifice plate 121 by press strip 117, keel 118, a plurality of net and is constituted; The microgrid dictyosome generally adopts the stack of 2-5 layer microgrid to constitute, adopt in this example and be respectively 300 orders, 400 orders, three layers of microgrids stack of 500 orders from the bottom to top and be configured as the oblate cylindricality microgrid of V-shaped groove setback shape dictyosome 128 according to skeleton, skeletal fixation is on support 130, microgrid is supported on keel and net is separated on the orifice plate, and the bending top is fixed along being pressed in by press strip 117 on the keel 118 and with holding bolt 116 about the V-shaped groove.Be provided with the sealing chamber profile shaft cover 140 that is slidingly matched with hollow central siphon in microgrid dictyosome 128 center fixation, the outside of microgrid dictyosome 128 is fixedly connected on sheath body 29 inwalls by top outer ring retaining plate 127 and bottom outer ring retaining plate 131 by skeleton respectively, the inboard of microgrid dictyosome 128 respectively by skeleton by annular retaining plate 132 fixedly connected axle sleeves 140 in annular retaining plate 133 in the top and the bottom; Annular retaining plate 133 is the orifice plate that has some holes in top outer ring retaining plate 127 and the top, and filtered water is passed through.

Above-mentioned back flushing shower nozzle 100 is to be made of water pipe 114 and a plurality of fluid jetting heads 115 with the corresponding setting of each V-shaped groove of connecting below thereof, the shape of fluid jetting head 115 and V-shaped groove shape are coincide, and insert respectively in each V-shaped groove, its both sides that recline the V-shaped groove groove face have posticum 119; It is above-mentioned that jet to wash away 124 be that the corresponding described spacer screen 126 of side is provided with the gas ejector pipe of some production wells 125 thereon; In the present embodiment, back flushing shower nozzle 100 can be steadily along top outer ring retaining plate 127 rotations of being fixed in sheath body 129 inwalls by the roller 113 of end setting, and jet 124 roller 113 that are provided with by the end that wash away can steadily rotate along the annular support plate 122 that is fixed at sheath body 129 inwalls.

Above-mentioned micro-net component 1 horizontal seal is connected in the tank body top, and the top of above-mentioned microgrid dictyosome 128 is open, is clear water zone 8, and the rising pipe 112 of the receipts mill weir 111 of clear water by being arranged on described sheath body 129 tops is discharged; In establish dividing plate 110, closed at both ends above-mentioned hollow central siphon 19 be fixed in the axle sleeve 140 to be slidingly matched, realize being rotatably connected on microgrid dictyosome center thus, the tubular shaft pipe coupling rotating drive mechanism on dividing plate 110 tops, connect the water source and be tightly connected with above-mentioned back flushing shower nozzle 100, the water source is a clear water zone 8; The tubular shaft pipe coupling source of the gas of dividing plate 110 bottoms, and wash away 124 and be tightly connected with jet; Rotate, be tightly connected with waterfall gas device group 5 by the following swivelling union 162 that is arranged on the described waterfall gas device group 5 in hollow central siphon 19 lower ends, above-mentioned source of the gas is desirable from aerator source of the gas or the pneumatic pump set up, and the gas of the pneumatic tube 120 in this example is taken from the aerator source of the gas.At work, hollow central siphon when rotating, give simultaneously jet wash away 124 and waterfall gas device group 5 source of the gas is provided.In actual fabrication, effluent weir 111 centres are provided with bearing 12, and above-mentioned rotating drive mechanism comprises motor 18, step-down gear 17, the last swivelling union 161 that is arranged at receipts mill weir 111 tops, all is positioned at and receives mill weir 111 upper fixed on bearing 12.Motor 18 connects the movable end of going up swivelling union 161 by step-down gear 17, and last swivelling union movable end connects hollow central siphon 19 and washes away 124 and rotate synchronously with jet by the moving back flushing shower nozzle 100 of tubular shaft pipe racks; The inboardend of last swivelling union 161 connects high-pressure hydraulic pump 13 by pumping line 14, and high-pressure hydraulic pump 13 connects clear water zone 8 by pump water inlet 11, and pumping line is provided with water regulating valve 15, is used to control the size of the back flushing water yield.The bottom of above-mentioned sealing chamber profile shaft cover 140 is communicated with pneumatic tube 120, gas enters hollow central siphon by the hole 141 of being located at dividing plate 110 belows on the hollow central siphon, be communicated with by the hole 142 of hollow central siphon and jetly wash away 124, simultaneously, gas also flows to waterfall gas device group 5 by swivelling union 162 down.During work, the above-mentioned back flushing shower nozzle that is positioned at same perpendicular setting 100 washes away 124 and is in continuously slowly rotating state with jet, therefore can make the water entering surface of microgrid dictyosome 128 and goes out the Dynamic Membrane of the water surface and adhere to dirt and all fully removed in same radial section zone.Above-mentioned motor, step-down gear and the swivelling union with the performance of being tightly connected are the commercially available prod.

At least two backflow selector switchs 2 of said vesse 3 outer setting, be provided with two in this example, the top of each selector switch that refluxes by pipeline 22 link to each other with the top of aerobic zone 4, the bottom by pipeline 24 link to each other with the bottom of oxygen-starved area 7, the middle part is provided with former water water inlet pipe 23, the top is provided with the releasing tube 21 be higher than above-mentioned micro-net component 1 top and opening suitable for reading.In the practical application, distribute variable valve to be connected to the water inlet manifold (not shown) by water inlet is set respectively on the former water water inlet pipe that is provided with on each selector switch 2 that refluxes, also can install under meter on the former water water inlet pipe 23, with control flooding velocity size.Pending former water enters backflow selector switch 2 by this pipe and mixes with mixed solution wherein and enters oxygen-starved area 7 again.Releasing tube 21 carries out storage, release and the observation of container inner pressure for discharging observation tube by it.In the practical application, this pipe also is for realizing the some position of automatic test, can passing through the pressure in its installation liquidometer direct-reading and the transmission container 3.When the utility model uses, existing in the above-mentioned tank body 3 contains the particle diameter that also should contain in the zoogleic dirt of microorganism, the waste water mixed solution by its weight percent 5 ‰～1%, and one or more are used to form the environment mineral material of microgrid packing layer in 100 orders～400 purposes, and environment mineral material is diatomite, zeolite, sepiolite, Attapulgite, vermiculite or activity charcoal powder.Inserting of environment mineral material, in dirty waste water filtering process with existing dirty, waste water mixed solution in the microbial bacteria micelle that contains form jointly attached to the Dynamic Membrane on the microgrid, when helping biological process, after the dynamic rete on the microgrid is by instantaneous washing open, under the container inner pressure effect, can in time fill up the microgrid hole, suppress fine suspended substance and pass microgrid, make to disturb to be reduced to minimum level.In addition, environment mineral material directly is wrapped in easier peeling off on the microgrid as the microgrid packing layer than organism, is particularly conducive to the protection to micro-net component, makes it the degree of depth not occur and pollutes, and reduces the energy consumption of back flushing simultaneously.

The application process and the principle of the foregoing description that the utility model provides are as follows:

At first contain existing that to insert 5 ‰～1% particle diameter in the zoogleic pending dirt of microorganism, the waste water mixed solution by weight percentage be 100 orders～several environment mineral materials of 400 purposes, adopted particle diameter 120 purpose zeolites, particle diameter 250 purpose diatomite and three kinds of materials of particle diameter 380 purpose activity charcoal powders in this example.

Former water at first enters backflow selector switch 2 by water inlet pipe 23, flow from top to bottom and in being full of the backflow selector switch of mixed solution with the mixed solution thorough mixing, because backflow selector switch 2 is that the mixed solution nitration reaction in the biological process is excessive to anti-nitration reaction, the space of conversion, former water enters this point, be actually for the denitrification flora provides nutritive substance, satisfy the demand of denitrification process carbon source.Meanwhile, dominant microflora fully draws nourishment from, and ties up wherein to form surging hyphomycetic breeding space, reaches the biological purpose of selecting.Finish mixed solution after the above-mentioned functions and enter the oxygen-starved area 7 of reactor vessel 3; Mixed solution is in the denitrification process of oxygen-starved area, and the conversion by the Nitrates material discharges a part of nitrogen, realizes clearing up and remove a part of nitrogenous source pollutent.At this moment, bite the phosphorus bacterium and breed and release phosphorus in a large number in anoxic with under the environment that fully carbon source is replenished, this a large amount of poly-phosphorus when entering aerobic environment is highly beneficial.Under negative pressure and container 3 internal pressure actings in conjunction that waterfall gas device group 5 gas lifts produce, oxygen-starved area 7 mixed solutions pass horizontally disposed tank body separation orifice plate 6 and enter aerobic zone 4; Under the aerobic environment of aerobic zone, a large amount of oxidized decomposition of carbon source pollutent in the mixed solution, the ammonia nitrogen material is converted to the Nitrates material by nitrifying process, and polyP bacteria begins poly-in a large number phosphorus; The reactor that move as the up-flow mode this moment, mixed solution divides three the tunnel to shift basically in the container 3: the one tunnel as aerobic phegma, enter oxygen-starved area 7 again by backflow selector switch 2, its flow is the 50-300% of flooding quantity, and it is to support return flow path nitrated, denitrification process; Another road effluxes by shore pipe 31 as aerobic excess sludge, and it is except keeping in the container reasonably active mud content, keeps certain mud outside age, bites the dephosphorization of phosphorus bacterium because of what discharge a certain amount of poly-phosphorus state; One road up-flow enters micro-net component 1 again, realizes entering clear water zone 8 discharge systems after the solid-liquid separation process through Dynamic Membrane, finally finishes former water purification.Mixed solution flow by micro-net component 1 is not equating with flooding velocity under the spoil disposal situation substantially.

Above-mentioned solid-liquid separation process is to realize by the micro-filtration effect of bringing in constant renewal in the micro-net component that dynamic rete embodied, its process is: (1). contain the formation of environment mineral material and the zoogleic Dynamic Membrane of microorganism: under aeration air pressure and hydraulic pressure acting in conjunction, mixed solution is entered by the bottom of micro-net component 1 continuously, run through micro-net component, flow out from top, with the circulation of liquid stream, environment mineral material and microbial bacteria micelle are attached to forming the dynamic rete with activity, flexibility and characterization of adsorption on the microgrid dictyosome 128; The formation of Dynamic Membrane rises to the micro-filtration level with the general strainability level of microgrid.(2). filter and generate clear water: mixed solution is by dynamic membrane filtering, and suspended matter and fine colloidal solid are blocked and are adsorbed on described microgrid dictyosome 128 water entering surfaces, and the clear water after the purification flows out from rising pipe 112 through receiving mill weir 111; (3). online gas, water cleans and upgrades Dynamic Membrane: through filtration after a while, Dynamic Membrane is active to be reduced, rete thickens, the filtered liquid flux descends, open the variable valve 15 on motor 18 and the pumping line 14, by step-down gear 17, swivelling union 161 makes hollow central siphon 19 drive back flushing shower nozzles 100 to wash away 124 a slowly rotation synchronously with jet, speed by the controls revolution driving mechanism is gentle, the flow of sprinkler head, pressure is controlled and is adjusted the cleaning of Dynamic Membrane and disturbance, with this generation state of controlling dynamic rete, reach the purpose that guarantees flux and solid-liquid separation effect.Back flushing shower nozzle 100 washes away speed control that a speed of rotation of 124 generates according to Dynamic Membrane at 45min～120min/r with jet.At this moment, on the one hand the clear water of clear water zone is pressed into back flushing shower nozzle 100 by the hollow central siphon on high-pressure hydraulic pump 13, dividing plate 110 tops, and goes out water surface flushing microgrid by fluid jetting head 115 microgrid that reclines; On the other hand, gas is pressed into by the sealing chamber of axle sleeve 140, hollow central siphon successively by pneumatic tube 120 and jetly washes away 124, jet by production well 125 to the sealing solarium of microgrid dictyosome 128 bottoms, make circular haydite ball 123 random jump under the rising thrust wherein, the water entering surface of shearing, friction microgrid, under water, the synchronization of gas, make the microgrid Dynamic Membrane and adhere to dirt to come off to the positive and negative two sides of microgrid dictyosome; After the dynamic rete on the microgrid is by instantaneous washing open, environment mineral material can in time be filled up the microgrid hole under the effect of water pressure, suppress suspended matter and fine colloidal solid and pass microgrid, and then flora begins apposition growth and forms new film, make to disturb and be reduced to minimum level, as the microgrid packing layer, environment mineral material directly is wrapped in easier peeling off on the microgrid than organism simultaneously, makes it the degree of depth not occur and pollutes; Since the back flushing shower nozzle 100 that is positioned at same perpendicular with jet wash away 124 with linear areas continuously slowly scanning wash away Dynamic Membrane, make the Dynamic Membrane metabolism, staggered the carrying out that come off, grow, the realization online updating.

Below be effect of the present utility model:

At aerobic zone HRT=4.5h, MILLSS=9000mg/L, gas-water ratio=10; Membrane module backwashing period=90min, membrane module immersion depth=0.8m, microgrid area=7m ²Condition under,

Water inlet index (former horizontal average): COD=390mg/L, BOD=165mg/L, SS=210mg/L, ammonia nitrogen=27mg/L, total nitrogen=87mg/L, total phosphorus=4mg/L;

Effluent index (permeate water mean value): COD=33mg/L, BOD=6mg/L, ammonia nitrogen=3.6mg/L, total nitrogen=7mg/L, total phosphorus=1mg/L, SS do not detect, turbidity=4N, excrement colibacillus group≤200/L.

Above-mentioned effluent index is better than or equals traditional MBR membrane module, and wherein COD, ammonia nitrogen, total nitrogen index are better than traditional MBR membrane module.Operation is 120 days continuously, do not find aquifer yield decline situation, and adopt traditional MBR membrane module under gas-water ratio=20 conditions, aquifer yield descends 7%, micro-net component operation energy consumption of the present utility model only is equivalent to 65% of conventional film assembly, and the cost of micro-net component only is equivalent to 30% of conventional film assembly.

In a word, each sport technique segment of the present utility model all embodies the assurance effluent characteristics, the principle of save energy and raising operational efficiency, it is low effectively to solve conventional film assembly aquifer yield, the cost height, work-ing life is low, occur easily because of concentration polarization, pollute, the aging flux that causes descends and stops up, and the control process complexity of operation, maintenance need be than the defective of high-technology condition, and it is stable inadequately to have overcome the existing micro-net component effluent quality of Dynamic Membrane that utilizes, membrane area is difficult to amplify, water rate is lower, the energy consumption height, still can not reach the defective of large-scale application level, further satisfy dirty, the technology of waste water reclaiming large-scale application, economic requirement can access more widely this outstanding combination technique of micro-net component of utilizing Dynamic Membrane and uses.

Claims (4)

1, a kind of microgrid bioreactor of dynamic membrane of continuous renewal Dynamic Membrane, mainly comprise and hold the container that contains the zoogleic dirt of microorganism, waste water mixed solution, the aerobic zone of band aerator group, through receiving the clear water zone that mill weir catchments, place the micro-net component of aerobic zone carrying Dynamic Membrane, former water water inlet pipe, the clear water rising pipe, it is characterized in that: described container is a circle tube tank, separating orifice plate by the tank body that has some through holes in the tank body is divided into two-layer up and down, the upper strata is described aerobic zone, and lower floor is made as the oxygen-starved area, and described waterfall gas device group is arranged at the upper face of described separation orifice plate; But described micro-net component is the micro-net component of continuously on-line updating dynamic membrane, and is main by the oblate cylindricality microgrid dictyosome with setback shape wire side, the all sheath bodies of dictyosome ring, seal the spacer screen of described microgrid dictyosome bottom, evenly be layed on the spacer screen layer 2-3 can under the last thrust between microgrid dictyosome and spacer screen dancing haydite ball, along microgrid dictyosome end face diameter above the microgrid dictyosome and below the back flushing shower nozzle that is positioned at same perpendicular and the jet head that washes away that are provided with respectively, drive described back flushing shower nozzle and the jet head that washes away with continuous hollow central siphon that rotates of the rotating speed of 45-120min/r and central siphon rotating drive mechanism formation; Described micro-net component horizontal seal is connected in the tank body top, and the top of described microgrid dictyosome is open, is clear water zone, and clear water is discharged by the receipts mill weir that is arranged on described sheath body top; In establish dividing plate, closed at both ends described hollow central siphon be rotatably connected on microgrid dictyosome center, the tubular shaft pipe coupling rotary drive mechanism on dividing plate top and water source also are tightly connected with described back flushing shower nozzle; The tubular shaft pipe coupling source of the gas of the lower partition, and be tightly connected with the jet head that washes away, hollow central siphon lower end is rotated, is sealedly connected on the described waterfall gas device group.

2, the microgrid bioreactor of dynamic membrane of continuous renewal Dynamic Membrane according to claim 1 is characterized in that described oblate cylindricality microgrid dictyosome with setback shape wire side is to be the microgrid stack of the different apertures of 300～500 purposes and to be configured as the dictyosome that is in turn connected to form by a plurality of concentric annular V-shaped grooves according to skeletal fixation by the multilayer aperture; The aperture of described spacer screen is 50～100 orders, and the space between microgrid dictyosome and the spacer screen is separated orifice plate by a plurality of nets and is separated into some sealings solarium, and described haydite ball is that diameter is the circular haydite ball of 4～10mm and splits at described each close-network indoor; Described back flushing shower nozzle is to be made of water pipe and a plurality of fluid jetting heads with the corresponding setting of each V-shaped groove of connecting below thereof, and the shape of described fluid jetting head and V-shaped groove shape are coincide, and insert respectively in each V-shaped groove, and its both sides that recline the V-shaped groove groove face have posticum; The described jet head that washes away is that the corresponding described spacer screen of side is provided with the gas ejector pipe of some production wells thereon.

3, the microgrid bioreactor of dynamic membrane of continuous renewal Dynamic Membrane according to claim 1 and 2 is characterized in that described water source is a clear water zone; The pneumatic pump that described source of the gas is taken from the aerator source of the gas or set up, described rotary drive mechanism comprises motor, step-down gear, the last swivelling union that is arranged at receipts mill weir top, the movable end of swivelling union is gone up in the motor via reducer connection, and last swivelling union movable end connects described hollow central siphon and rotates synchronously by moving back flushing shower nozzle of tubular shaft pipe racks and the jet head that washes away; The inboardend of last swivelling union is by water pump water outlet pipe coupling high-pressure hydraulic pump, and high-pressure hydraulic pump connects clear water zone by pump water inlet, and pumping line is provided with variable valve; Rotate, be tightly connected by the following swivelling union and the waterfall gas device group that are arranged on the described waterfall gas device group in described hollow central siphon lower end.

4, the microgrid bioreactor of dynamic membrane of continuous renewal Dynamic Membrane according to claim 1, it is characterized in that at least two backflow selector switchs of described external container setting, the top of each selector switch that refluxes links to each other with the top of aerobic zone, the bottom links to each other with the bottom of oxygen-starved area, the middle part is provided with described former water water inlet pipe, the top is provided with the releasing tube that is higher than described micro-net component top and opening suitable for reading.

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