CN201390672Y - Continuous movement linear back wash and distribution vibration reduction micro-grid component - Google Patents

Abstract

The utility model relates to a continuous movement linear back wash and distribution vibration reduction micro-grid component which comprises a box body formed by a rigid square enclosing frame and micro-grid bodies encapsulated on two end surfaces of the enclosing frame, and is characterized in that the micro-grid body is formed by overlapping a plurality of layers of micro-grids with different apertures; the box body is internally provided with a back wash supporting plate, a back wash water supply pipe and a plurality of positioning water receiving pipes; the positioning water receiving pipes are parallel to a left enclosing plate and a right enclosing plate and fixed between an upper enclosing plate and a lower enclosing plate; the back wash supporting plate stretches across the micro-grid body so as to be matched with a hollow cavity plate body sheathed on the positioning water receiving pipes in a sliding way, and a front end surface and a back end surface of the back wash supporting plate are cambered surfaces with water spray slits which support the micro-grid body; the back wash water supply pipe is vertically connected with the back wash supporting plate in a sealing way and connected with a driving mechanism; and when in use, one or a plurality of environmental mineral materials with 5 per thousand-1 percent grain diameters and less than 200 meshes are added into sewage and waste water to be treated according to weight ratio. The micro-grid component has the advantages that the micro-grid component has big membrane generating area, good and stable outflow water quality, high water outflow rate and low cost, and optimizes and simplifies power and control systems.

Description

Move the micro-net component of linear back flushing and distributed with shock absorption continuously

Technical field

The utility model relates to a kind of dirt, field of waste water treatment membrane biological reactor process membrane module, relates in particular to a kind of micro-net component that moves linear back flushing and distributed with shock absorption continuously.

Background technology

Membrane bioreactor (Membrane Bio Reactor is called for short MBR) is a kind of novel water treatment device that dirt, biological wastewater treatment technology and membrane separation technique are combined.The solid-liquid separation effect of the better quality that MBR has and the removal effect higher to organism, effluent quality is good, floor space is little, surplus sludge volume is low, level of automation is high, in water treatment field, especially obtaining using comparatively widely aspect dirt, the waste water reclaiming engineering.Yet MBR exists following shortcoming and obstacle in the 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; (2) membrane module cost height; (3) its flux descended and produce and stopping up because of pollution that concentration polarization causes, aging appears easily in membrane module, and work-ing life is low; (4) high pressure suction water pump, large vol back flushing equipment and associated function unit need be set, operation energy consumption and expense are higher.Above-mentioned shortcoming and stops limit the large-scale promotion and application of MBR technology.

In recent years, the MBR field begins to occur to the Dynamic Membrane Research of Separation Technique, be characterized in that typically referring to the aperture with common poroid material replaces traditional micro-filtration or hyperfiltration membrane assembly as fine filter screens (industry general designation microgrid) such as chemical fibre silk screen, non-woven fabrics such as Stainless Steel Cloth, nylon, terylene making micro-net component more than 200 orders, constitute a kind of novel microgrid bioreactor of dynamic membrane, be called for short DMBR (Micro-screenDynamic Membrane Bio Reactor).Micro-net component mainly is made of the casing of finishing micro-filtration and back flushing mechanism, and casing is to enclose frame and fixed sealing by waterproof board making square to be contained in the flat cube shaped cavity casing that the microgrid body that encloses the frame both ends of the surface constitutes, and the microgrid body adopts the individual layer microgrid to form.Though microgrid has strainability, can only isolate the big solid matter of some particle diameters as coarse filtration, in the Dynamic Membrane microfiltration systems then only as the prop carrier of Dynamic Membrane.The cavity of above-mentioned box house is the container that holds filtered water, and the water of casing outside can only enter cavity by the microgrid body.Micro-net component in use, place bioreactor mixed solution, along with the carrying out of biochemical reaction and filtration procedure, microbial bacteria micelle precipitation is a Dynamic Membrane attached to forming the biomass layer that comes off of periodically growing on the microgrid body, is also referred to as gel coat, secondary film or Dynamic Membrane.The formation of this film has improved the strainability as the microgrid body of prop carrier.Dynamic Membrane has activity, flexibility and adsorptivity feature, under certain control condition, can reach and the identical micro-filtration separating effect of the used solid film assembly of traditional MBR.Discharge through rising pipe in pending dirt, the cavity of waste water mixed solution by the laggard dictyosome in a subtle way of microgrid dynamic membrane filtering.Because the microgrid bioreactor of dynamic membrane is in the solid-liquid separation process, Dynamic Membrane is spontaneous in biochemical reaction process as basic separating medium, mixed solution is provided as mould material for it continually, therefore there are not material and cost of manufacture consumption, especially transmembrane pressure is well below traditional MBR solid film assembly, and the pollution of the degree of depth of Dynamic Membrane can be controlled and be solved by simple back flushing fully, there is no need to regularly replace membrane module, the material of in addition making assembly is easy to get and is cheap, therefore construction and running cost are easy to large-scale application and popularization far below traditional MBR.Yet this technology is still immature at present, still is in development.

Existing microgrid Dynamic membrane is to rely on cross flow filter to control Dynamic Membrane thickness to guarantee membrane flux to reduce the film pollution and to rely on the interruption back flushing to upgrade Dynamic Membrane substantially, it is very effective that this reduces pollution to traditional MBR solid film assembly, but concerning with utilize pollution substance carry out solid-liquid separation (with dirt press down dirty or with dirty pollution treatment) activity and flexible Dynamic Membrane can produce some disadvantageous effects, it is the normal vibration effect of microgrid surface imperfection that cross-flow exists prop carrier when the Dynamic Membrane surface shear is washed away, the frequency band of this irregular oscillation is very wide, make coating growth evenly impossible, the face centre is difficult to form effective gel coat because of amplitude is too high.Therefore, existing Dynamic Membrane 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 fluctuation of delivery turbidity and total plate count and is difficult to be controlled at the level of traditional MBR; Because microgrid area and filtration flux are proportional, and cross-flow is increased and irregular to the face center by enclosing frame gradually to the amplitude of prop carrier surface imperfection vibration, face is big more, the probability that " leak " occurs is also just high more, water quality also just be cannot say for sure to demonstrate,prove more, therefore just cause the surface-area of microgrid and the generation area of Dynamic Membrane to be difficult to amplify, the less assembly membrane area and the processing water yield have limited the extensive water treatment applications of this technology; In use, because of rete thickens, to adhere to dirt too much, flux drops in the time of must carrying out back flushing, needs enough a large amount of water or the mixed water of gas owing to be interrupted back flushing, makes that the back flushing plant capacity is big, resource cost and energy consumption height, and lness ratio of plant is also high; After the back flushing,, make that water rate is difficult to improve because of producing a large amount of interference water during the Dynamic Membrane regeneration without membrane filtration.These technical bottlenecks make Dynamic membrane be difficult to realize the engineering utilization.

In sum, how to make the Dynamic Membrane isolation technique really become a kind of water treatment practical technique cheaply, become the industry concerned issue.

The utility model content

Main purpose of the present utility model is: at the problems referred to above, provide a kind of cost low, volume is little, it is big that film generates area, effluent quality is good and stable, flux is high and stable, and high also optimization of water rate simplified power and Controlling System, realizes the continuously mobile linear back flushing of less energy-consumption, low cost movement and the micro-net component of distributed with shock absorption.

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

A kind of micro-net component that moves linear back flushing and distributed with shock absorption continuously, comprise that the square that encloses system by the fluid-tight upper and lower, left and right of rigidity coaming plate encloses frame and fixed sealing and is contained in the flat cubic type casing of cavity that the microgrid body that encloses on the frame both ends of the surface forms, it is characterized in that described microgrid body is is that the microgrid stack in the different apertures of 200～500 purposes forms by the layer 2-3 aperture; The back flushing fagging is set in described casing, drives 1 or many back flushing induction pipes and the many location receipts water pipes that have some water holes that the back flushing fagging moves; Described many location are received water pipes and are parallel to that described left and right coaming plate is parallel to be fixed between the described upper and lower coaming plate, and each location is received water pipe and stretched out from last coaming plate and be connected to rising pipe; The back flushing fagging is sleeved on described location and receives on the water pipe and the sealed cavity plate body that can move back and forth between upper and lower coaming plate for the upper and lower coaming plate that is parallel to casing with its plate face across microgrid body wire side is slidingly matched, the cambered surface of pasting the band water spray slit that the microgrid body props up the microgrid body is arranged to squeeze in its front and rear end; Described back flushing induction pipe is perpendicular to back flushing fagging plate face, its lower end cavity, its upper end fixedly connected with the back flushing fagging and sealing connection back flushing fagging are stretched out outside the casing and are connected with driving mechanism, and back flushing induction pipe and last coaming plate are tightly connected to be slidingly matched.

The beneficial effects of the utility model are:

(1) adopts the micro-net component that moves linear back flushing and distributed with shock absorption continuously, the back flushing fagging that is provided with in the assembly periodically moves and supports and the jack-up microgrid, actually provide out the irregular oscillation that a kind of existence that is evenly distributed because of the turbulent water force environment produces and turn to relative regular oscillation and subdue amplitude and the method for frequency, it be with in the microgrid vibration under the prerequisite that amplitude, frequency effectively reduce, again according to a fixed period allocated to each the filtered points position on the microgrid.This method has effectively been cleared up the disadvantageous effect of turbulent flow to the microgrid normal vibration under the prerequisite of the cross flow filter favorable factor that has kept present employing, created and be suitable for even, the stable generation of Dynamic Membrane and metabolic good " bed " environment, solve 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 the utility model, can increase substantially the microgrid area of assembly, assembly is done greatly.Improve thus whole DMBR system the treating water flux, given play to the low advantage of micro-net component price; (3) the continuous linear backwash mode of the back flushing fagging of Cai Yonging, since speed slowly and moment only to washing away along the local Dynamic Membrane on the microgrid in fagging zone, therefore give the growth of newborn Dynamic Membrane with time enough, reaching old film removes and the new film optimum alternate cycles of growing, effectively the control thickness guarantees the higher effluent flux of constant; (4) the utility model in use, must in mixed solution, add environment mineral material, after the dynamic rete on the microgrid body is by instantaneous washing open, environment mineral material can in time be filled up the microgrid hole under the hydraulic pressure effect, suppress suspended matter and fine colloidal solid and pass the microgrid body, make and disturb the water transit dose to be reduced to minimum level; Environment mineral material directly is wrapped in easier peeling off on the microgrid body 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 reduces the energy consumption of back flushing equipment; (5) with conventional press and provide enough the water of big flow or interruption backwash mode that gas mixes water is compared, the backwashing water consumption that the utility model uses is extremely low, makes system have very high effective permeability rate; This on-line cleaning mode, plant capacity significantly reduce installation cost and operation energy consumption far below traditional membrane bioreactor plant capacity, and the back flushing plant factor is 100%.The utility model can be installed in any type of aerobic biochemical pond as independent solid-liquid separation assembly, can satisfy the requirement of large-scale application.

Description of drawings

Fig. 1 is the main TV structure synoptic diagram (removing anterior microgrid body) that moves the micro-net component of linear back flushing and distributed with shock absorption continuously;

Fig. 2 is the vertical view of Fig. 1 raising middle flask body portion;

Fig. 3 is the A-A cross section view among Fig. 1;

Fig. 4 is the stereographic map (removing anterior microgrid body) of Fig. 1 raising middle flask body portion;

Fig. 5 is the application synoptic diagram that moves the micro-net component of linear back flushing and distributed with shock absorption continuously.

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

Embodiment,

Fig. 1-Fig. 4 illustrates a kind of micro-net component that moves linear back flushing and distributed with shock absorption continuously, comprising that the square that encloses system by the fluid-tight upper and lower, left and right of rigidity coaming plate encloses frame 51 and fixed sealing and is contained in the flat cubic type casing 5 of cavity that the microgrid body 41,42 that encloses on the frame both ends of the surface forms, it is characterized in that described microgrid body the 41, the 42nd, is that the microgrid stack in the different apertures of 200～500 purposes forms by the layer 2-3 aperture; The microgrid material can adopt chemical fibre silk screen such as Stainless Steel Cloth, nylon, terylene and non-woven fabrics etc., has adopted in this example by outside to inside being respectively 250 orders, 360 orders and three layers of microgrids stack of 480 purposes to constitute the microgrid body, and the microgrid material has adopted the chemical fibre silk screen; In above-mentioned casing 5, back flushing fagging 6 is set, drive 1 or many back flushing induction pipes 2 and the many location receipts water pipes 3 that have some water holes that the back flushing fagging moves, determine to use the quantity of back flushing induction pipe in the actual fabrication according to the transverse width size of casing 5, to wide molding box body, for driving wide type back flushing fagging, many back flushing induction pipes must be set, be provided with 1 back flushing induction pipe 2 in this example, water pipe 3 is received in 4 location, the left side that water pipe 3 is parallel to casing 5 is received in above-mentioned 4 location, right coaming plate is parallel be fixed on above-mentioned on, between the following coaming plate, each location receipts water pipe 3 stretches out by aqueduct 31 from last coaming plate and is connected to rising pipe 32, and then gathers to outfall sewer 33; Above-mentioned back flushing fagging 6 is sleeved on above-mentioned location for the upper and lower coaming plate that is parallel to casing 5 with its plate face across the wire side of microgrid body 41,42 is slidingly matched and receives on the water pipe 4, and the sealed cavity plate body that can move back and forth between upper and lower coaming plate, the front and rear end of back flushing fagging 6 are arranged to the cambered surface that the branch don't push pastes the band water spray slit 61,62 that microgrid body 41,42 props up the microgrid body; Above-mentioned back flushing induction pipe 2 is perpendicular to the plate face of back flushing fagging 6, cavity, its upper end that the back flushing fagging is connected in the fixedly connected and sealing of its lower end and back flushing fagging 6 stretches out that casing is outer to be connected with driving mechanism 1 and to be connected to water-supply pipe 23 by flexible pipe 22, and back flushing induction pipe 2 is tightly connected to be slidingly matched by sealing-ring 21 and last coaming plate.In the present embodiment, the driving mechanism 1 of micro-net component 7 has adopted worm gear, worm gearing, mainly by motor 11, step-down gear 12, worm gear 13, worm screw 14 is formed, motor 11 drives worm gear 13 by step-down gear 12 and rotates, worm gear 13 drives worm screw and does vertical movement, because of worm screw flexibly connects back flushing induction pipe 2 tops by flange 15, thereby drive back flushing induction pipe 2 and do vertical movement, when the control motor commutation rotates, worm screw is cooked and pumps, do and pump thereby drive back flushing induction pipe 2, and then drive the back flushing fagging 6 of fixedlying connected by back flushing induction pipe 2 and do and pump with it.Worm gear 13 supports by the transmission shaft 16 that is connected between step-down gear 12 and the pedestal 17.

The effect that water pipe 3 is received in above-mentioned location is: receive water in the chamber of (1) balanced micro-net component, reduce receipts water dead angle area or receive the unbalanced flow of water short-circuited region inhomogeneous or damaged to the growth that dynamic rete causes.(2) location back flushing fagging.(3) avoid because of the back flushing fagging moves up and down generation hydraulic pressure, clear water in the cavity is extruded outside the chamber by the microgrid body.(4) clear water in the cavity is discharged by rising pipe.Back flushing fagging 6 can realize that receiving directed the stablizing of water pipe along the location moves owing to be sleeved on the receipts water pipe of location.Back flushing fagging inside is sealed cavity, and the backwashing water in the cavity can only and form linear cascade by front and back horizontal narrow slit ejection fagging and see through the ejection of microgrid body.In work, the back flushing fagging slowly scans continuously with linear areas and washes away Dynamic Membrane, makes the Dynamic Membrane metabolism, comes off, grows to interlock and carry out, and realizes online updating.Because supporting also, the back flushing fagging of jack-up microgrid body slowly acts on the microgrid wire side continuously, with the vibration of action of turbulent flow and wire side back and forth, distribute at wire side fifty-fifty, in fact play and move past wire side by back flushing fagging scan-type and carry out vibration damping and make the microgrid amplitude and the uniform effect of frequency change.Thisly be linear ejection backwashing water and paste the net effect that interlock mode that periodicity that the microgrid body props up the microgrid body moves has constituted scanning vibration damping and continuous linear back flushing with squeezing, what accept when guaranteeing that with this Dynamic Membrane is adhered on whole microgrid body is the amplitude that is lowered of same period and the vibration environment of frequency, be " implantation " of identical process, " breed ", fixing " bed " environment of " growth ", it is even to make that whole wire side generates the rete quality, consistency of thickness, there is not irregular variation, it is stable that thereby assurance dynamic membrane filtering performance one is made peace, and guarantees effluent quality and high water rate.

Fig. 5 is the application synoptic diagram that moves the micro-net component of linear back flushing and distributed with shock absorption continuously.As shown in the figure, 6 micro-net components that adopted the utility model to provide, in the aeration biochemical pond of the tank body 30 of bio-reactor, be provided with 6 casings 5 and corresponding driving mechanism 1, in this example, 6 groups of worm gears, worm gearing are shared one group of motor and step-down gear equipment.Below in conjunction with Fig. 1～Fig. 5 the method that the micro-net component that moves linear back flushing and distributed with shock absorption continuously that adopts the utility model to provide carries out dirt, waste water filtering is described, step is as follows:

(1) contains the formation of environment mineral material and the zoogleic Dynamic Membrane of microorganism

At first add 5 ‰～1% particle diameter one or more environment mineral materials below 200 orders in the zoogleic pending dirt of microorganism, the waste water mixed solution by weight percentage in existing containing, described environment mineral material is diatomite, zeolite, sepiolite, Attapulgite, vermiculite and activity charcoal powder, has adopted particle diameter 150 purpose sepiolites, particle diameter 200 purpose Attapulgite and particle diameter 100 purpose activity charcoal powders in this example; Then above-mentioned micro-net component casing is vertically immersed and be positioned in the aeration biochemical pond that is provided with aeration plate 10 of bio-reactor, the pressure that passes through of Dynamic Membrane requires very low, only need suitably to adjust the immersion depth of micro-net component in mixed solution and can realize that the micro-net component immersion depth is 0.8m in this example.Under the hydraulic pressure effect, mixed solution enters in the cavity of above-mentioned casing 5 by above-mentioned microgrid body 41,42 continuously and receives water pipe 3 by the location and discharge cavitys and import rising pipes 32; Along with liquid flow to into and discharge casing 5, 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 41,42;

(2). filter and generate clear water

Under the hydraulic pressure effect, mixed solution passes through dynamic membrane filtering, suspended matter and fine colloidal solid are blocked and are adsorbed on described microgrid dictyosome 41,42 water entering surfaces, clear water after the purification is by location receipts water pipe 3, through aqueduct 31, be connected to rising pipe 32, and gather to outfall sewer 33 and flow out tank bodies 30, the clear water that arrow 9 illustrates after the purification among Fig. 5 flows to;

(3). on-line cleaning is also upgraded Dynamic Membrane

Through filtration after a while, Dynamic Membrane is active to be reduced, and rete thickens, the filtered liquid flux descends, and opens Clean water valve, by water-supply pipe 23, flexible pipe 22 is by water-supply pipe 23, and flexible pipe 22 is carried clear water to back flushing induction pipe 2, and arrow 8 illustrates the backwashing water flow direction among Fig. 5; Backwashing water enters in the cavity of the back flushing fagging 6 that is tightly connected with it by back flushing induction pipe 2, at this moment, motor 11 by adjusting driving mechanism 1, the rotating speed of step-down gear 12 and turn to, mobile back flushing induction pipe 2 is slowly moved up and down with 1-5m/H speed, Fig. 1,3,4,5 shafts 16, the arrow in the worm screw 14 and back flushing induction pipe 2 outsides shows their rotation direction respectively.At this moment, the forward and backward water outlet slit 61,62 of backwashing water by the back flushing fagging 6 forward and backward microgrid body 41,42 that reclines respectively goes out water surface flushing microgrid body, forms linear cascade and see through the ejection of microgrid body from the water of slit ejection to make attached to the Dynamic Membrane on the microgrid body and adhere to dirt and come off; Remove the wire side of flushing when back flushing fagging 6 after, environment mineral material can in time be filled up this part microgrid body space, suppress suspended matter and fine colloidal solid and pass the microgrid body, because slowly scanning to wash away Dynamic Membrane and distribute with linear areas continuously, the back flushing fagging reduces the wire side vibration, make the Dynamic Membrane metabolism, come off, grow to interlock and carry out, realize online updating.Because supporting also, the back flushing fagging of jack-up microgrid body slowly acts on microgrid body wire side continuously, with the vibration of action of turbulent flow and wire side on average, reciprocally on wire side, distribute, in fact play and move past wire side by back flushing fagging scan-type and carry out vibration damping and make the microgrid amplitude and the uniform effect of frequency change.At this moment the newborn Dynamic Membrane that is attached on the microgrid will be the gel coat of one deck consistency of thickness, compaction rate unanimity.So go round and begin again, guaranteeing to filter the stable of water quality and flux.

Below be the effect of present embodiment under different condition:

(1) the MBR reactor of Fig. 5: at HRT=4H, MLSS=15000mg/L, gas-water ratio=12, micro-net component backwashing period=120min, micro-net component immersion depth=0.8m, microgrid area=20m ²Condition under continuously operation 120 days, water outlet SS does not detect, turbidity≤2N, excrement colibacillus group≤200/L.

(2) oxidation ditch: at HRT=4.5H, MLSS=9000mg/L, gas-water ratio=10; Micro-net component backwashing period=90min, micro-net component immersion depth=0.8m, microgrid area=7m ²Condition under continuously operation 120 days, water outlet SS does not detect, turbidity≤2N, excrement colibacillus group≤200/L.

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 operation control is complicated, the defective that the maintenance technology condition is high, and it is stable inadequately to overcome existing Dynamic Membrane micro-net component effluent quality, 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 makes this outstanding combination technique of micro-net component of utilizing Dynamic Membrane can access more widely and uses.

Claims (1)

1, a kind of micro-net component that moves linear back flushing and distributed with shock absorption continuously, comprise that the square that encloses system by the fluid-tight upper and lower, left and right of rigidity coaming plate encloses frame and fixed sealing and is contained in the flat cubic type casing of cavity that the microgrid body that encloses on the frame both ends of the surface forms, it is characterized in that described microgrid body is is that the microgrid stack in the different apertures of 200～500 purposes forms by the layer 2-3 aperture; The back flushing fagging is set in described casing, drives 1 or many back flushing induction pipes and the many location receipts water pipes that have some water holes that the back flushing fagging moves; Described many location are received water pipes and are parallel to that described left and right coaming plate is parallel to be fixed between the described upper and lower coaming plate, and each location is received water pipe and stretched out from last coaming plate and be connected to rising pipe; The back flushing fagging is sleeved on described location and receives on the water pipe and the sealed cavity plate body that can move back and forth between upper and lower coaming plate for the upper and lower coaming plate that is parallel to casing with its plate face across microgrid body wire side is slidingly matched, the cambered surface of pasting the band water spray slit that the microgrid body props up the microgrid body is arranged to squeeze in its front and rear end; Described back flushing induction pipe is perpendicular to back flushing fagging plate face, its lower end cavity, its upper end fixedly connected with the back flushing fagging and sealing connection back flushing fagging are stretched out outside the casing and are connected with driving mechanism, and back flushing induction pipe and last coaming plate are tightly connected to be slidingly matched.

Images