CN105771337A - High-efficiency solid-liquid separation device and application thereof - Google Patents
High-efficiency solid-liquid separation device and application thereof Download PDFInfo
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- CN105771337A CN105771337A CN201511019422.4A CN201511019422A CN105771337A CN 105771337 A CN105771337 A CN 105771337A CN 201511019422 A CN201511019422 A CN 201511019422A CN 105771337 A CN105771337 A CN 105771337A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/003—Sedimentation tanks provided with a plurality of compartments separated by a partition wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/265—Separation of sediment aided by centrifugal force or centripetal force by using a vortex inducer or vortex guide, e.g. coil
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a high-efficiency solid-liquid separation device and an application thereof. A main body of the solid-liquid separation device is a cylindrical cavity, the inner side wall of the cylindrical cavity is provided with a threaded channel extending downwards, the top of the cylindrical cavity is provided with a stirring water impeller, and a flow disturbance paddle or water impelling pump of the stirring water impeller extends into the cylindrical cavity; the side wall of the upper part of the cylindrical cavity is provided with a sewage inlet, the side wall of the lower part or the bottom of the cylindrical cavity is provided with a sludge discharge port; the cylindrical cavity is internally provided with separation plates; a relatively closed conical cavity is enclosed by the separation plates enclose, and the bottom of the conical cavity communicates with the cylindrical cavity; the top of the conical cavity is provided with a clear water overflow port. The conical cavity is enclosed by the separation plates, and a fast mixing region, a slow mixing region and a sludge concentration and precipitation region are formed, so as to realize function integration of a coagulation tank and a sedimentation tank; the device has the advantages of small land occupation, less required equipment, low cost, low maintenance costs, simple operation, and low failure generation rate. By using double action of centrifugal force and gravity, and under the guidance of the threaded channel, the speed and the effect of solid-liquid separation are improved.
Description
Technical field
The application relates to sewage treatment area, particularly relates to a kind of efficient equipment for separating liquid from solid and application thereof.
Background technology
In the process of sewage disposal, generally include physical reaction and the big step of solid-liquid separation two, namely so-called coagulation-settlement process.In coagulation-settlement process; coagulation or coagulation process and physical reaction, be primarily referred to as in sewage dosing coagulant, completes hydrolysis, polycondensation reaction under certain hydraulics; making the de-steady process with cohesion of colloidal dispersion system of sewage, this process is divided into again mixing and two stages of microgranule coagulation.Namely mix stages instigates the medicament including coagulant of input to be spread in sewage rapidly, equably, and to create good hydrolysis condition, this stage adopts fast mixed, and namely quick stirring and evenly mixing, makes medicament rapid, dispersed.After the microgranule coagulation stage referred to mix stages, colloid mutually collides, assembles or adds under certain hydraulics and helps solidifying on a small quantity, and to form the process of bigger cotton-shaped granule, this stage adopts slow mixed, i.e. stirring at low speed mixing, to ensure the reaction effect of medicament.Whole coagulation process relates to, 1. the character of water-borne glue body, 2. coagulant hydrolysis in water, 3. the interaction of colloid and coagulant.
Object handled by coagulation, the mainly small float in sewage and colloid.The float of big is sunk due to the effect by gravity, it is possible to remove by methods such as precipitations.But, the small float of nominal particle size and colloid micelle, dispersion suspended state can be kept in sewage for a long time, even if standing more than tens of hours, without natural subsidence.This is owing to small suspended particle and micelle have " stability ".The mechanism of coagulation is fully apparent from so far not yet, because its factor of relating to is a lot, such as composition and concentration, water temperature, the pH value of water, the basicity of impurities in water, and the character of coagulant and coagulation condition etc..But summing up, the mechanism of coagulation has three broad aspect:
(1) compression double electric layer effect
Colloidal impurity micelle in sewage can maintain stable dispersion suspended state, and the ∫ current potential mainly due to water-borne glue grain is higher.If eliminating or reduce the ∫ current potential of micelle, it is possible to make micelle collision coalescence, loss of stability.Water adds the coagulant of electrolyte property namely up to this purpose.Such as, in natural water electronegative clay micelle, after putting into the coagulant such as iron salt or aluminium salt, a large amount of cations that coagulant provides can pour in colloid diffusion layer even adsorption layer.Because the combined potential on glue core surface is constant, increasing the cation concentration in diffusion layer and adsorption layer, just make diffusion layer thinning, ∫ current potential reduces.When a large amount of cations pour in adsorption layer so that when diffusion layer is wholly absent, ∫ current potential is zero, is called isoelectric state.Under isoelectric state, between micelle, electrostatic repulsion disappears, and micelle the most easily coalesces.As long as it practice, when ∫ current potential is down to a certain degree and is made the energy repelled between micelle less than the kinetic energy of micelle Brownian movement, micelle begins to produce obvious coalescence, and ∫ current potential at this moment is called critical potential.Micelle reduces because of ∫ current potential or eliminates so that the process of loss of stability, is called that micelle is de-steady, and de-steady micelle coalesces mutually, is called cohesion.
(2) adsorption bridging effect
Trivalent aluminium salt or iron salt and the solidifying agent of other macromolecule rods form high molecular polymer through poly-condensation and hydrolysis, have linear structure after being dissolved in water.This kind of high molecular polymer can by micelle strong adsorption, because its lineal measure is relatively big, after a certain micelle is adsorbed in its one end, the other end adsorbs again another micelle, between two micelles apart from each other, carry out adsorption bridging, make granule tie gradually greatly, form macroscopic thick floccule body.This process being made microgranule mutually bond by polymer substance adsorption bridging effect, is called flocculation.
(3) effect caught by net
Trivalent aluminium salt or iron salt etc. are hydrolyzed and generate precipitate.These precipitate, in settlement process, can collect volume, the microgranule such as colloid that net is caught in water, makes micelle bond.
Generally being made the cohesion of the mutual condensation process of colloidal solid by Effect of Electric Double Layer and being made by the adsorption bridging effect of high molecular polymer colloidal solid mutually bond the flocculation of process, it is generically and collectively referred to as coagulation.Therefore in sewage, add medicament, carry out the mixing of sewage and medicament, so that the colloidal substance in sewage produces cohesion and this combined process of flocculating becomes coagulation process.Coagulation process makes small float and the integrated thick granule of colloidal polyurea precipitate, and is separated from water, makes sewage be purified.
In existing technology, device or structure that coagulation process adopts are coagulating basins, are broadly divided into dividing plate flocculation basin, folded plate flocculator, machinery flocculation basin, grid flocculation pool of grid strip, rotational flow flocculation tank and perforation rotational flow flocculation tank etc. by structure type.
Dividing plate flocculation basin refer to current with certain flow rate between dividing plate by and complete the structures of flocculation process, as shown in Figure 1, the flocculating effect of dividing plate flocculation basin is unstable, pond is big, it is generally used for big-and-middle-sized water factory, and for small-sized water factory, its water yield is too small, clapboard spacing is excessively narrow, and inconvenience is constructed and maintenance.
Folded plate flocculator refer to current with certain flow rate between flap by and complete the structures of flocculation process, according to water (flow) direction, folded plate flocculator can be divided into vertical-flow and flat flow, generally adopt vertical-flow, as in figure 2 it is shown, it makes the flat board dividing plate of dividing plate flocculation basin the flap of certain angle into.The parallel installation of trough is claimed " with setback plate " by flap crest, and crest is mounted opposite title " different setback plate ".Folded plate flocculator installation and maintenance difficulty, flap is costly.
Machinery flocculation basin refers to and makes aqueous agitation to complete the structures of flocculation process by mechanical straps moving vane, as it is shown on figure 3, its agitator has pulpboard formula and vane type, divides horizontal axial type and perpendicular axis type machinery flocculation basin by the installation site of shaft.First lattice stirring intensity of machinery flocculation basin is maximum, then progressively reduces, and stirring intensity is decided by agitator speed and paddle board area.Same, machinery flocculation basin is also have the high deficiency of maintenance difficult, maintenance cost.
Grid flocculation pool of grid strip is designed to the structure of many lattice vertical shaft reverse-flow type, as shown in Figure 4, each vertical shaft installs some layers of grid or grizzly bar, the upper and lower staggered perforate of partition wall between each vertical shaft, water inlet end gradually decreases to water side, general point 3 sections of controls, and leading portion is close net or close grid, stage casing is for dredging net or thin grid, and latter end does not install net, grid.In contrast, the structure of grid flocculation pool of grid strip is increasingly complex, installs, difficult in maintenance, and expense is also higher.
The structural design of rotational flow flocculation tank is, as it is shown in figure 5, the nozzle of water sprayer is along the peripheral jet current in pond, forms eddy flow, and the intensity of eddy flow is by water sprayer spout flow speed control, simultaneously also relevant with the volume of flocculation basin and shape.Rotational flow flocculation tank is limited to the injection intensity of water sprayer; its volume is less; and; rotational flow flocculation tank is except being used alone; generally also with the flocculation basin of other structure or sedimentation tank with the use of; such as building jointly in vertical-flow sedimentation tank, the time of staying is generally 8～15min, it is adaptable to middle-size and small-size water factory.
Perforation rotational flow flocculation tank, as shown in Figure 6, it is made up of some grids, and number of squares is no less than six lattice.The upper and lower perforate of partition wall, current enter along pool wall tangent line and form eddy flow.First checkerwork cell mouth is little, and rotary speed is big, successively decreases successively subsequently, corresponding rotation decrease of speed.The perforation maximum deficiency of rotational flow flocculation tank is to there is terminal reseavoir prodelta clay mud phenomenon, and, grid also easily grows algae, blocking mesh.
Precipitation and solid-liquid separation process; it is the sewage process structures that utilize that in sedimentation tank particle big for density ratio water or coagulation product are removed by gravitational settling effect from water; it is one of most widely used processing unit in sewage disposal, can be used for the process of sewage, the post processing of biological treatment and advanced treating.
Sedimentation tank includes inhalant region, settling zone, relief area, mud district and five parts of exhalant region.The effect of inhalant region and exhalant region is to flow through sedimentation tank with making uniform fluid flow, it is to avoid precipitation is had a negative impact by short stream and minimizing turbulent flow, reduces dead water region simultaneously, improves the capacity utilization of sedimentation tank.Settling zone also referred to as settling section, i.e. the working area of sedimentation tank, the region granule that need to precipitate can being separated from water completely.Mud district is mud storage, concentration and the region discharged.Relief area is then the water layer region separating settling zone and mud district, it is ensured that the granule precipitated is not gone because current stir again and floated.Sedimentation tank is to utilize in current the downward settling velocity of suspended impurity granule more than current cross-flow velocity, or the sedimentation time flows out the time of sedimentation tank less than current downwards so that particle contamination precipitation is at the bottom of pond, it is achieved dirty water purification.
Desirable sedimentation tank, its treatment effeciency is only relevant with surface loading, namely relevant with the surface area of sedimentation tank, and unrelated with the degree of depth of sedimentation tank, pond deep only with the T/A of mud storage and prevent that mud from being washed away etc. factor is relevant.And in the sedimentation tank that reality is run continuously; owing to current can bring the upflow velocity of current from water outlet weir crest overflow; therefore precipitation gravity can flow away with water less than the granule of current upflow velocity power; precipitating gravity then can remain suspended in pond equal to the granule of current upflow velocity power, only precipitation gravity just can precipitate more than the granule of current upflow velocity power in pond.And time that deposit seed is deposited at the bottom of pond in sedimentation tank is relevant at the hydraulic detention time of sedimentation tank with current, namely relevant with the degree of depth of cell body.Therefore, theoretically, cell body is more shallow, and granule is more accessible at the bottom of pond, the theoretical foundation place in this shallow layer precipitating such as inclined tube or inclined-plate clarifying basin pond just.In order to make sedimentation tank to go down slightly larger than the particle precipitation of upflow velocity and prevents the mud precipitated down to be subject to again floating into the disturbance of water current; thus between settling zone and mud storage area, leave relief area; making slightly larger than after contacting with each other between the granule of upflow velocity or the granule that again floats in these sedimentation tanks, precipitation is gone down again.
Therefore, sedimentation tank often divides into rectangular sedimentation tank, vertical sedimentation basin, radical sedimentation basin and inclined tube or inclined-plate clarifying basin four kinds by water (flow) direction.
Rectangular sedimentation tank, as it is shown in fig. 7, pond type is rectangle, sewage is from one end person who lives in exile in pond, and horizontal direction flows through pond, flows out from the other end in pond.Bottom the import department in pond, set storage bucket, at the bottom of other pond, position, have the gradient, tendency storage bucket.
Vertical sedimentation basin, pond type mostly is circular, also it is square or polygonal, its side view is as shown in Figure 8, sewage enters from the central canal being located at pond central authorities, is uniformly distributed in lentamente the transverse section in pond from the lower end of central canal, is arranged on face, pond or bay wall surrounding due to outlet after reflecting plate, substantially from bottom to top, mud stores up the sludge bucket in bottom to the flow direction of Gu Shui.
Radical sedimentation basin, also known as radiation type precipitation pool, as it is shown in figure 9, how rounded pond type is, small-sized pond also adopts square or polygon sometimes.The import and export in pond is arranged substantially identical with vertical flow basin, and import is in central authorities, and outlet is around.But the ratio that footpath, pond is deep with pond, radial flow tank manyfold bigger than vertical flow basin.Current in horizontal direction to surrounding spoke stream or jet, constantly become due to discharge section area big, therefore the water velocity in pond slow down gradually to pond surrounding from center, pond in pond.Bucket is located at pond central authorities, and to centroclinal at the bottom of pond, mud is typically by scraping mud or the eliminating of suction dredge tool.
Inclined tube or inclined-plate clarifying basin, as shown in Figure 10, be the sedimentation tank being provided with inclined tube in settling zone, and assembling form has inclined tube and arm two kinds.Utilizing parallel pipe or the parallelpiped of inclination in the settling zone of flat flow or vertical sedimentation basin, sometimes available honeycomb filler, be divided into a series of shallow layer precipitating layer, processed and sedimentation heavy mud mutually moves in each precipitation shallow-layer and separates.It is divided into reverse flow, three kinds of different separate modes of concurrent and lateral flow according to its mutual direction of motion.Between every two pieces of inclined paralled plates, or in parallel pipe, be equivalent to a very shallow sedimentation tank.
In some integrated uses, coagulating basin and sedimentation tank mixing are constructed, i.e. Round Sump coagulative precipitation tank, as shown in figure 11, together with coagulating basin is built in sedimentation tank, the two pool wall is connected, and sewage is flowed into sedimentation tank by overfall or irrigation canals and ditches by coagulating basin, it is not necessary to extra power.Round Sump coagulative precipitation tank can reduce capital construction cost, floor space and equipment cost to a certain extent.
It is exactly more than constructing or equipment of adopting in current coagulation-settlement process.No matter coagulating basin is monomer construction or fit construction with sedimentation tank, broadly falls into more piece cell body；Further, coagulating basin, because needing dosing in batches, has fast mixed functional requirement mixed, slow, and what inherently have more piece cell body arranges demand；And sedimentation tank is complicated down to structure because of functional requirement.Additionally, the design of sedimentation tank is because of the requirement of surface loading and elevation, facility needs floor space big, and highly high, volume is also relatively large.Coagulating basin needs supporting multiple stage mixing pump, and to coordinate fast mixed slow mixed demand, meanwhile, sedimentation tank part also needs the auxiliary equipment such as supporting mud scraper；The equipment used is more many, and structure is more complicated, operates also more complicated, and the probability broken down is more big；Equipment making cost, maintaining cost, operation energy consumption cost etc. are all higher.It addition, because sedimentation tank adopts gravitational settling to carry out solid-liquid separation, affected by sedimentation velocity, the sewage disposal time is long, anti impulsion load ability.
Generally speaking, in existing technology, the volume of coagulative precipitation tank is big, and occupation of land is many, long construction period；Required equipment mostly is nonstandard making, makes the technical difficulty required big, and cost of investment is too high；Equipment is arranged on-the-spot that site requirements is high；Operational management requirement and operating cost are all higher；When pollution variety, adaptibility to response is poor.So a lot of enterprises all suffer from identical problem when supporting this kind of environmental protection facility at present, namely equipment purchasing is expensive, and equipment disposes difficulty, and equipment operation maintenance is difficult, and equipment runs expensive.
Therefore, need the facility that existing coagulation-settlement process is adopted badly and improve, to reduce cost further, so that sewage purification environmental protection facility is able to better popularization and application.
Summary of the invention
The purpose of the application is to provide equipment for separating liquid from solid and the application of a kind of improvement.
The application have employed techniques below scheme:
The one side of the application discloses a kind of efficient equipment for separating liquid from solid, and the main body of this equipment for separating liquid from solid is a cylindrical cavity, and the case inside wall of cylindrical cavity has at least one screw channel extended to cylindrical cavity bottom；The top of cylindrical cavity is provided with stirring impeller, and the flow-disturbing slurry of stirring impeller or plug-flow pump stretch into cylindrical empty intracavity, and, the spiral downwardly direction of screw channel is identical with the rotation direction of stirring impeller；The upper portion side wall of cylindrical cavity offers wastewater inlet, lower sides or bottom and offers mud discharging mouth；Cylindrical cavity be internally provided with dividing plate, dividing plate surrounds the conical cavity of relative closure in the inside of cylindrical cavity, and the bottom of conical cavity connects with described cylindrical cavity；The top of conical cavity offers clean water overflow mouth.
In the application, the top of cylindrical cavity, upper portion side wall, lower sides and bottom, be the location that carries out of the structural representation shown in Figure 12, the top of top and cylindrical cavity, bottom and bottom, upper portion side wall is namely near the sidewall at top, and lower sides is namely near the sidewall of bottom；Wastewater inlet is opened in upper portion side wall, and mud discharging mouth is opened in lower sides or bottom, allows for mud under gravity, is deposited in the bottom of cylindrical cavity, and therefore, sewage carries out from top, and mud is discharged from bottom or bottom.Mud discharging mouth can be offered on sidewall and can also offer in bottom, offers at sidewall and can conveniently place pipeline, and is opened in bottom, then need pipeline is embedded in the end, ground, or set up by whole equipment for separating liquid from solid.
In the application, dividing plate surrounds the conical cavity of relative closure in the inside of cylindrical cavity, wherein, relative closure refers to, dividing plate is entity structure, dividing plate does not have duct or other passage of passing through of supplying water, dividing plate be by conical cavity inside and outside water body isolation, so can make the water body in conical cavity by outside water currents.But, the bottom of conical cavity is open, connects with cylindrical cavity bottom it so that whole conical cavity connects with cylindrical cavity, and conical cavity is not completely self-contained closing space.
It should be noted that the equipment for separating liquid from solid of the application, by arranging dividing plate at cylindrical empty intracavity, and surrounded the conical cavity of relative closure by dividing plate, in a device, achieve multiple function division, it is achieved thereby that the equipment for separating liquid from solid of integration.Concrete, on the top of cylindrical cavity, stirring impeller promote flow-disturbing slurry or plug-flow pump, form fast confounding, it is possible to achieve the quick mixing of medicament and sewage；And along with downwards, part less than flow-disturbing slurry or plug-flow pump, the speed of stirring also declines therewith, namely forms slow confounding, to ensure the reaction effect of medicament；Again down, the region shrouded of conical cavity is entered, due to the isolation of dividing plate so that the water body in conical cavity is by the interference of flow-disturbing slurry, thus forming settling zone, the bottom of cylindrical cavity and mud district.
It can further be stated that; the equipment for separating liquid from solid of the application is not merely with gravitational settling; also use centrifugal force and accelerate sedimentation velocity, concrete, under the rotation of flow-disturbing slurry or plug-flow pump; the sewage on upper strata rotates in cylindrical cavity; forming eddy current, now, microgranule can throw away to the sidewall direction of cylindrical cavity; microgranule is circumferentially concentrated, Accelerated subsidence.The equipment for separating liquid from solid of the application utilizes centrifugal force and gravity to settle, its effect is far longer than single gravitational settling, and therefore, the sewage water outlet that the equipment for separating liquid from solid through the application processes is more clear, the effect of mud power by centrifugation can become more to concentrate, the Treatment of Sludge in later stage of being more convenient for.
It can further be stated that, the equipment for separating liquid from solid of the application, the case inside wall of cylindrical cavity arranges the screw channel extended to cylindrical cavity bottom, and screw channel spiral downwardly direction is identical with the rotation direction of flow-disturbing slurry or plug-flow pump, during use, the microgranule being thrown to sidewall can be fed downwardly into the bottom of cylindrical cavity along this screw channel, further speeds up sedimentation, and the application is efficiently just embodied in this just.
Preferably, the case inside wall of cylindrical cavity has two screw channels extended to cylindrical cavity bottom, major thread passage respectively arranged side by side and minor thread passage.
It should be noted that in a kind of implementation of the application, the case inside wall of whole cylindrical cavity is designed with major thread passage and the minor thread passage of size interval so that microgranule is more effective and is transported to the bottom of cylindrical cavity faster.
Preferably, screw channel extends to the position that cylindrical cavity bottom is corresponding with the bottom of conical cavity.
It should be noted that, the purpose of screw channel is that microgranule is quickly transported to cylindrical cavity bottom, in a kind of implementation of the application, consider the bottom of cylindrical cavity, from the region that conical cavity shrouds, for settling zone, this region is little affected by the interference of flow-disturbing slurry, therefore, screw channel extends to the position that the bottom of conical cavity is corresponding.
Preferably, dividing plate is fixedly connected on the sidewall of cylindrical cavity by parting bead or mesh screen.
It should be noted that, the conical cavity of the application and cylindrical cavity are not completely isolated coming, therefore, it is appreciated that, the lower circumference of dividing plate is to be fixed with the sidewall of cylindrical cavity by parting bead to be connected, narrow channel is formed, in order to fluid is from this narrow channel stream to the bottom of cylindrical cavity between dividing plate and the sidewall of cylindrical cavity；Meanwhile, parting bead can also play the impact stoping top fluid flowing further to lower sediment so that the settling zone of dividing plate thickened sludge formed below.It is appreciated that the Main Function of parting bead supports conical cavity exactly, between dividing plate and the sidewall of cylindrical cavity, forms narrow channel, therefore, except parting bead, mesh screen or hollow out that other mesh is bigger are constructed and be can be used for the application, are not specifically limited at this.
Preferably, the bottom of conical cavity is positioned at about 2/3 depth of cylindrical cavity, and the top of conical cavity is positioned at about 1/3 depth of cylindrical cavity.
It should be noted that the major function of conical cavity be to provide one stable, by the region of flow-disturbing slurry interference, the application is positioned in 1/3 to 2/3 depth of cylindrical cavity, simply a kind of preferred implementation of the application；Being appreciated that in the utilization that water treating capacity is big, the cylindrical cavity of equipment for separating liquid from solid can be very big, as long as and conical cavity is arranged at the cylindrical cavity place close to bottom, precipitate to ensure, be not specifically limited at this.
Preferably, flow-disturbing slurry or plug-flow pump stretch into cylindrical empty intracavity about 1/3 depth.
It should be noted that, the effect of flow-disturbing slurry or plug-flow pump is stirring for water body, make it flow, as previously mentioned, in cylindrical cavity, flow-disturbing starches the fast confounding in region in one's power, less than region be slow confounding, therefore, the degree of depth that flow-disturbing is starched or plug-flow pump is deep just directly determines fast mixed slow mixed subregion, in a kind of preferred implementation of the application, is positioned in cylindrical empty intracavity about 1/3 depth；It is appreciated that the cylindrical cavity of equipment for separating liquid from solid can be very big in the utilization that water treating capacity is big, now, flow-disturbing slurry or plug-flow pump have only to be disposed proximate to the place of cylindrical empty top of chamber, make sewage and medicament be sufficiently mixed, are not specifically limited at this.It addition, flow-disturbing slurry or the effect of plug-flow pump are stirring for water body in the application, therefore, as long as the effect of stirring water body can be played, no matter it is flow-disturbing slurry, or plug-flow pump, or the device of other stirring or structure, may be used to the application, be not specifically limited at this.
Preferably, the top of conical cavity is further opened with clear water refluxing opening, so that part clear water is back in cylindrical cavity.
It should be noted that, the clear water refluxing opening of the application its objective is, Partial cleansing clear water is passed through, this clear water refluxing opening is back in cylindrical cavity, continues to participate in flocculation precipitation reaction, so on the one hand, whirlpool center can be destroyed, on the other hand, cause the current that a Ge You center is outside, the pollutant being suspended in whirlpool center are taken back fast confounding.
Preferably, the top of conical cavity, the axis of cylindrical cavity is additionally provided with central canal, the clear water that clear water refluxing opening flows out is back in cylindrical cavity by central canal.
It should be noted that, the equipment for separating liquid from solid of the application make use of the dual function of centrifugal force and gravity to settle simultaneously, the stirring that centrifugal force is flow-disturbing slurry produces, while forming centrifugal eddy current, a metastable region can be formed at vortex centers, this region and whirlpool region, suffered centrifugal force is faint, this can cause the pollutant that in sewage, proportion is lighter to be suspended in whirlpool, simultaneously, the flco entering whirlpool region is not easily susceptible to centrifugal action to equipment for separating liquid from solid border movement, thus being unfavorable for solid-liquid separation, affects effluent quality；For this, in the preferred version of the application, in whirlpool region, namely the axis of cylindrical cavity arranges central canal, utilizes central canal to destroy whirlpool center, it is to avoid pollutant or flco are suspended in center, affect effluent quality.Further, also part clear water is overflowed from central canal, utilize the backflow clear water overflowed pollutant or the flco at center to be broken up.
The another side of the application discloses the application in sewage disposal or water purification treatment technology of the equipment for separating liquid from solid of the application, and this sewage includes but are not limited to sanitary sewage, trade effluent.
Being appreciated that the equipment for separating liquid from solid of the application is applicable to any sewage disposal that can adopt coagulation-settlement process, these sewage include sanitary sewage, trade effluent etc..Wherein, water purification treatment technology includes, for instance tap water purifying etc..
The application has the beneficial effects that:
The equipment for separating liquid from solid of the application, by arranging the dividing plate surrounding conical cavity at cylindrical empty intracavity, the fast confounding of self-assembling formation, slow confounding and sludge condensation settling zone, it is achieved that coagulating basin and sedimentation tank function integration, floor space is little, place restriction is little, equipment needed thereby is few, and equipment cost is low, and maintaining cost is low, simple to operate, fault occurrence probability is low.Further, the equipment for separating liquid from solid of the application, the case inside wall of cylindrical cavity is threaded passage, utilizes centrifugal force and gravity dual function, the guiding of matching thread passage, effectively raise solid-liquid separation speed and separating effect.Popularization and application for sewage purification environmental protection facility are had laid a good foundation.
Accompanying drawing explanation
Fig. 1 is the vertical view face structural representation of the background technology median septum flocculation basin of the application；
Fig. 2 be the application background technology in the tangent plane structural representation of folded plate flocculator；
Fig. 3 be the application background technology in machinery flocculation basin structural representation, A is tangent plane structural representation, and B is vertical view face structural representation；
Fig. 4 be the application background technology in the plane arrangement structure schematic diagram of grid flocculation pool of grid strip, dotted arrow represents following Inlet and outlet water, and solid arrow represents Inlet and outlet water above；
Fig. 5 be the application background technology in the structural representation of rotational flow flocculation tank；
Fig. 6 is the vertical view face structural representation of the background technology middle punch rotational flow flocculation tank of the application, and dotted arrow represents following Inlet and outlet water, and solid arrow represents Inlet and outlet water above；
Fig. 7 be the application background technology in the tangent plane structural representation of rectangular sedimentation tank；
Fig. 8 be the application background technology in the tangent plane structural representation of vertical sedimentation basin；
Fig. 9 be the application background technology in the tangent plane structural representation of radical sedimentation basin；
Figure 10 be the application background technology in the tangent plane structural representation of inclined tube or inclined-plate clarifying basin；
Figure 11 be the application background technology in the tangent plane structural representation of Round Sump coagulative precipitation tank；
Figure 12 is the longitudinal section structural representation of equipment for separating liquid from solid in embodiments herein；
Figure 13 is the Structure of cross section schematic diagram of equipment for separating liquid from solid in embodiments herein；
Figure 14 is the structural representation of the cylindrical cavity in embodiments herein with screw channel；
Figure 15 is the structural representation of the major thread passage on the case inside wall of cylindrical cavity in embodiments herein.
Detailed description of the invention
The application is in the theoretical basis of the environmental protection facility adopted at existing coagulation-settlement process, further Optimal improvements, and the equipment for separating liquid from solid of a kind of brand-new integration worked out, wherein, integration is mainly reflected in, multiple function divisions of coagulating basin and sedimentation tank have been incorporated in a device by the equipment for separating liquid from solid of the application, it is achieved that the fast mixed of coagulating basin in one apparatus, slow mixed function, simultaneously, also achieve the function of each subregion of sedimentation tank, the setting of such as dividing plate just can effectively avoid short stream and minimizing turbulent flow that precipitation is had a negative impact, the conical bores that dividing plate surrounds, on it, namely part plays the effect of relief area, lower part and settling zone and mud district.
The equipment for separating liquid from solid of the application, by internal structure is carried out rational modification, is achieved that multiple function divisions of coagulating basin and sedimentation tank at a cylindrical empty intracavity.
The equipment for separating liquid from solid of the application:
1) coagulating all carries out with flco precipitation in a reactor, centrifugal+gravitational settling carries out solid-liquid separation and instead of single gravitational settling, improve sedimentation velocity, decrease required floor space and requirement for height because of surface loading restriction, thus greatly reducing the height of equipment, floor space and cumulative volume.What also reduce equipment makes requirement, cost of manufacture and the equipment restriction to site requirements simultaneously.
2) all of operation work only needs a stirring impeller just can complete, and reduces equipment purchasing cost, maintaining expense and energy consumption, also reduces the complex operations because many equipment bring and high fault occurrence probability simultaneously.
3) in solid-liquid separation process, centrifugal+gravity forces is far longer than single gravity forces.Therefore more clear through the water outlet of the sewage of the equipment for separating liquid from solid process of the application, the effect of mud power by centrifugation can become more to concentrate, the Treatment of Sludge in later stage of being more convenient for.
4) equipment for separating liquid from solid of the application can pass through to regulate blender rotating speed, controls response speed, treatment effeciency, so that its capacity of resisting impact load is far longer than traditional coagulation-settlement process limited by surface loading.
5) additionally, the equipment for separating liquid from solid of the application can carry out standard specifications making, it is achieved standardization, streamlined produce.
Generally speaking, the final purpose of the application is the environmental protection predicament encountered at present in order to solve Small and Medium Enterprises in China.The environmental issue of medium-sized and small enterprises, is most of Environmental Protection in China problem, and solving this problem has great contribution to Environmental Protection in China cause.Under current economic environment, most of medium-sized and small enterprises all suffer from the contradictory problems of existence and environmental protection, it is common to environmental issue is paid attention to not；And, in existing environmental protection industry (epi), most equipment manufacturing cost is high, floor space big, need the operating cost such as professional's operation maintenance management, medicament energy consumption to remain high, this is that medium-sized and small enterprises are difficult to bear, even if configuring reluctantly, also usually put aside as useless gradually because operational management is improper, cause significant wastage.The equipment for separating liquid from solid of the application, its sewage treatment capacity can reach existing level, even better；What is more important, the equipment for separating liquid from solid equipment of the application is simple, easy to operate, easily installs, and equipment cost, operation expense are all relatively low, meeting the user demand of major part medium-sized and small enterprises, medium-sized and small enterprises are afforded to use, are used good, do not increase again cost burden；Thus solving the environmental issue of medium-sized and small enterprises.
In addition, the application is further, the case inside wall of cylindrical cavity arranges the screw channel extended to cylindrical cavity bottom, merely with centrifugal force, microgranule is not circumferentially concentrated, and, by the guiding of screw channel, further centrifugal force is converted to the power-assisted under screw, promotes the microgranule of concentration on circumference to carry downwards.
Below by specific embodiments and the drawings, the application is described in further detail.The application is only further described by following example and accompanying drawing, should not be construed as the restriction to the application.
Embodiment
The equipment for separating liquid from solid of this example is as shown in figure 12, its main body is a column barrel container, column barrel container has a cylindrical cavity 1, and the top of cylindrical cavity 1 is provided with stirring impeller 2, and the flow-disturbing slurry 21 of stirring impeller stretches into inside about 1/3 depth of cylindrical cavity 1；Offering wastewater inlet 3 in the upper portion side wall of cylindrical cavity, bottom offers mud discharging mouth 4；Cylindrical cavity be internally provided with dividing plate 5, dividing plate 5 surrounds the conical cavity 51 of relative closure in the inside of cylindrical cavity, the setting of dividing plate so that the bottom of conical cavity is positioned at about 2/3 depth of cylindrical cavity, the top of conical cavity is positioned at about 1/3 depth of cylindrical cavity；The dividing plate of the bottom of conical cavity, the i.e. dividing plate of the lower circumference of conical cavity, it is connected by parting bead 52 is fixing with the sidewall of cylindrical cavity 1, its Structure of cross section schematic diagram is as shown in figure 13, it is preferred that in implementation, forms narrow channel 53 between dividing plate and the sidewall of cylindrical cavity of the bottom of conical cavity, this slype can for sewage there through, meanwhile, also water body is split, it is to avoid the current of dividing plate lower floor are impacted by the current on dividing plate upper strata；The top of conical cavity offers two outlets, and namely clean water overflow mouth 55 and clear water refluxing opening 54, clean water overflow mouth 55, be used for exporting clear water；The top of conical cavity also has a central canal 6, central canal 6 is arranged on the axis of cylindrical cavity, central canal 6 connects with clear water refluxing opening 54, in order to part clear water is back to cylindrical empty intracavity by central canal by clear water refluxing opening 54, again participates in coagulating sedimentation reaction.
And, the equipment for separating liquid from solid of this example, the case inside wall of cylindrical cavity has been offered small one and large one two screw channels, as shown in figure 14, namely major thread passage arranged side by side and minor thread passage, screw channel extends to cylindrical cavity bottom, and, the rotation direction of screw channel spiral downwardly direction and flow-disturbing slurry 21 identical；Major thread passage is as shown in figure 15.The screw channel of this example is throughout whole cylindrical cavity, actually, consider the loading of sewage, and microgranule is deposited to settling zone, in the another kind of implementation of this example, screw channel has been from wastewater inlet 3, and extends to the position that cylindrical cavity bottom is corresponding with the bottom of conical cavity, namely extends to narrow channel 53.Screw channel has the anti-overflow effect helping and dropping.
It should be noted that, central canal 6 is arranged on the axis of cylindrical cavity, be in order to destroy stirring impeller 2 stir produced whirlpool center, the stirring impeller 2 of this example promote flow-disturbing slurry 21 rotation, stirring sewage, the axis of its rotation is also the axis at cylindrical cavity.It is appreciated that for cylindrical cavity, in order to make full use of its die cavity, sewage necessarily rotates around its axis, meanwhile, normal, the axis of conical cavity, cylindrical cavity axis and stirring impeller 2 promote flow-disturbing slurry 21 rotation axis all be overlap.For the structural design that some are special, it is possible to determine according to concrete user demand, be not specifically limited at this.
The equipment for separating liquid from solid of this example, during use, sewage and medicament enter cylindrical cavity 1 from wastewater inlet 3, and stirring impeller 2 starts and brakes flow-disturbing slurry 21 rotation, flow-disturbing slurry 21 drive sewage stirring, control flow-disturbing and starch 21 velocities of rotation, it is achieved sewage and the fast of medicament mix, and starch the lower section of 21 at flow-disturbing, the velocity of rotation of sewage gradually slows down, more downward velocity is more slow, until by after the narrow channel 53 between dividing plate and cylindrical cavity sidewall, substantially without there being rotation.Starch below 21 at flow-disturbing, and above narrow channel 53 between, sewage velocity of rotation gradually slows down, and forms slow confounding, to ensure the reaction effect of medicament.Mud is starched under the dual function of 21 stirring centrifugal force at gravity and flow-disturbing, and under the guiding of screw channel, sedimentation downwards, after narrow channel 53, isolation due to dividing plate 5, the stable bottom falling to cylindrical cavity, now, below narrow channel 53 and conical cavity 51 be namely equivalent to sedimentation tank.Sludge settling is in bottom, and conical cavity more up water body is more limpid, until the top of conical cavity, clear water is overflowed by clean water overflow mouth 55, exports equipment for separating liquid from solid.Meanwhile, separately there is part clear water by clear water refluxing opening 54, be back to cylindrical empty intracavity through central canal 6, continue to participate in coagulating sedimentation reaction.
In the equipment for separating liquid from solid of this example; starching 21 stirrings due to flow-disturbing makes sewage form eddy current; the less granule of part proportion or flco is had at vortex centers; the centrifugal force being subject to due to central area is more weak, therefore, not easily precipitates; for this; this example devises central canal 6, to destroy this vortex centers, it is to avoid granule or flco are suspended in vortex centers district.
The equipment for separating liquid from solid of this example, and existing equipment for separating liquid from solid or compared with constructing:
1) equipment for separating liquid from solid of this example has accomplished coagulation and precipitation simultaneously, and floor space is little, and place restriction is little, and equipment needed thereby is few, and construction cost, maintaining cost are low, simple to operate, and fault occurrence probability is low；
2) equipment for separating liquid from solid of this example improvement by internal structure, the fast confounding of self-assembling formation, slow confounding, sludge condensation district, reasonable in design；
3) speed of agitator scalable, capacity of resisting impact load is strong, has controllability；
4) equipment for separating liquid from solid of this example adopts centrifugal+gravity dual force to complete sedimentation, effectively raises solid-liquid separation speed and quality, and sewage water outlet is more clear；
5) equipment for separating liquid from solid of this example, arranges the screw channel extended to cylindrical cavity bottom on the case inside wall of its cylindrical cavity, utilizes screw channel, centrifugal force is converted to the power-assisted pushing downwards microgranule, further increases separating rate.
Above content is further description the application made in conjunction with specific embodiment, it is impossible to assert the application be embodied as be confined to these explanations.For the application person of an ordinary skill in the technical field, under the premise conceived without departing from the application, it is also possible to make some simple deduction or replace, all should be considered as belonging to the protection domain of the application.
Claims (9)
1. an efficient equipment for separating liquid from solid, it is characterised in that: the main body of described equipment for separating liquid from solid is a cylindrical cavity, and the case inside wall of described cylindrical cavity has at least one screw channel extended to cylindrical cavity bottom；The top of described cylindrical cavity is provided with stirring impeller, and the flow-disturbing slurry of stirring impeller or plug-flow pump stretch into cylindrical empty intracavity, and, the spiral downwardly direction of described screw channel is identical with the rotation direction of described stirring impeller；The upper portion side wall of described cylindrical cavity offers wastewater inlet, lower sides or bottom and offers mud discharging mouth；Described cylindrical cavity be internally provided with dividing plate, described dividing plate surrounds the conical cavity of relative closure in the inside of cylindrical cavity, and the bottom of conical cavity connects with described cylindrical cavity；The top of described conical cavity offers clean water overflow mouth.
2. equipment for separating liquid from solid according to claim 1, it is characterised in that: the case inside wall of described cylindrical cavity has two screw channels extended to cylindrical cavity bottom, major thread passage respectively arranged side by side and minor thread passage.
3. equipment for separating liquid from solid according to claim 1, it is characterised in that: described screw channel extends to the position that cylindrical cavity bottom is corresponding with the bottom of described conical cavity.
4. equipment for separating liquid from solid according to claim 1, it is characterised in that: described dividing plate is fixedly connected on the sidewall of described cylindrical cavity by parting bead or mesh screen.
5. equipment for separating liquid from solid according to claim 1, it is characterised in that: the bottom of described conical cavity is positioned at about 2/3 depth of described cylindrical cavity, and the top of described conical cavity is positioned at about 1/3 depth of described cylindrical cavity.
6. equipment for separating liquid from solid according to claim 1, it is characterised in that: described flow-disturbing slurry or plug-flow pump stretch into cylindrical empty intracavity about 1/3 depth.
7. the equipment for separating liquid from solid according to any one of claim 1-6, it is characterised in that: the top of described conical cavity is further opened with clear water refluxing opening, so that part clear water is back in cylindrical cavity.
8. equipment for separating liquid from solid according to claim 7, it is characterised in that: the top of described conical cavity, the axis of cylindrical cavity is additionally provided with central canal, the clear water that clear water refluxing opening flows out is back in cylindrical cavity by central canal.
9. the application in sewage disposal or water purification treatment technology of the equipment for separating liquid from solid according to any one of claim 1-8, described sewage includes but are not limited to sanitary sewage, trade effluent.
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| CN106145293A (en) * | 2016-08-29 | 2016-11-23 | 张春辉 | A kind of novel equipment for separating liquid from solid and application thereof |
| CN113145321A (en) * | 2021-04-28 | 2021-07-23 | 江西国化实业有限公司 | Trifluoromethanesulfonic acid centrifugal device |
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| CN105771337B (en) | 2018-01-30 |
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Effective date of registration: 20200727 Address after: 523726 Guangdong city of Dongguan Province Huang Tamura Fuqiang Street No. 5 in Zhenlong. Patentee after: Dongguan City Hengchun Environmental Services Ltd. Address before: 523726 Guangdong city of Dongguan Province Huang Tamura Fuqiang Street No. 5 in Zhenlong. Patentee before: Zhang Chunhui |
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