CN103351043B - Vortex-type mixing sedimentation integrated reactor - Google Patents

Vortex-type mixing sedimentation integrated reactor Download PDF

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CN103351043B
CN103351043B CN201310227377.6A CN201310227377A CN103351043B CN 103351043 B CN103351043 B CN 103351043B CN 201310227377 A CN201310227377 A CN 201310227377A CN 103351043 B CN103351043 B CN 103351043B
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cylinder
centrum
water
eddy current
current type
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CN103351043A (en
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任勇翔
林雪
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Abstract

The invention discloses a vortex-type mixing sedimentation integrated reactor which comprises a first cylinder, a contraction cone, an expansion cone and a second cylinder, and the first cylinder, the contraction cone, the expansion cone and the second cylinder are mutually connected, or the second cylinder is connected with a precipitation zone through a guide plate. A water flow tangentially enters the first cylinder, and flows downward while rotation. In the part of the contraction cone the flow rate of the water flow becomes greater because the section becomes smaller. When the water flow enters into the expansion cone, because the section suddenly largens and because of longitudinal jet entrainment of water, a larger backflow zone appears at near-wall places of the expansion cone and the second cylinder and negative pressure is generated. In the process, drugs moves along with the water flow, and has an excellent contact effect with the water flow, so that the waste of the drugs can be reduced and the drug dosage can be reduced. The water flow passes through the part of the second cylinder, has an extremely low flow rate, and meets the requirements for getting into a sedimentation tank. Through use of integrated reactor, mechanical equipment for mixing is needless, energy consumption and maintenance difficulties are reduced, and the operation cost and repair cost are saved.

Description

A kind of eddy current type mixed precipitation integral reactor
Technical field
The present invention relates to a kind of reactor of water treatment, particularly for a kind of dosing, process the eddy current type mixed precipitation integral reactor of waste water.Not only can more effectively strengthen mixed effect and the sedimentation effect of medicine and water, and not adopt any power equipment, reduce the consumption of the energy.
Background technology
In water purification treating processes, by dosing, make the technique of impurity in medicament and water or pollutent generation chemical reaction a lot, relate to sewage disposal and regeneration, Industrial Wastewater Treatment and reuse, circulating cooling water treatment, drinking water treatment, special industry water and wastewater treatment, chemical field etc.The removal efficiency of these water technologies often depends on mixing and separating effect of medicament and target contaminant or impurity, and main what adopt is settling pond technique and coagulation-settlement process.
Settling pond technique be a kind of by mixing, reaction and the flocs unit of water and medicament separated three the integrated equipment of process with water.Mainly include accelerator, circulatior clarifier, sludge blanket clarifier, plusator.At present most widely used is accelerator.Accelerator technique is to utilize machinery water extraction is risen and stir, and impels body refuse circulation, and makes solid impurity and established body refuse contact flocculation in water, and then reach the effect of precipitation separation.Its principle of work is mainly: the mixed former water of dosing enters the first reaction chamber, under the stirring of blade, carry out contact reacts with the circulation body refuse times over former water, then through impeller, be promoted to the second reaction chamber and continue reaction, to form larger wadding grain, then by diversion chamber, enter separate chamber and carry out precipitate and separate.The substantially same accelerator of circulatior clarifier principle of work, not existing together just need not machinery and utilize waterpower to mix under the effect of water sprayer and reach body refuse pump around circuit.
Coagulation-settlement process includes coagulation process and precipitation process.Coagulation process comprises mixing and flocculation, and mixing process is mainly to utilize tubular static mixer that coagulating agent and Yuan Shui are mixed, and then enters flocculation basin.Flocculation process refers to dosing coagulant former water after sufficiently mixing, makes micro-wadding grain be in contact with one another collision, to form the process of larger wadding grain under flow action.Flocculation basin is mainly divided into dividing plate flocculation, folded plate flocculation, grid flocculation, machinery flocculation.Settling tank is mainly divided into rectangular sedimentation tank, vertical sedimentation basin, radical sedimentation basin, inclined tube (swash plate) settling tank.What application was maximum at present is radical sedimentation basin and tube settler.Radical sedimentation basin adopts circle more, makes inclination at the bottom of pond, and current flow to periphery from center, and flow velocity reduces gradually.Tube settler is that parallel pipe or the parallelpiped that utilization is tilted in the settling region of flat flow or vertical sedimentation basin is divided into a series of shallow layer precipitating layers, and processed in each precipitation shallow-layer, motion is also separated mutually with heavy mud sedimentation.
No matter be coagulation-settlement process or accelerator technique at present, all need mechanical stirring equipment, exist power consumption large, the defects such as working cost is high, maintenance difficult.
Summary of the invention
The defect or the deficiency that for above-mentioned prior art, exist, the object of the invention is to, a kind of eddy current type mixed precipitation integral reactor is provided, this reactor adopts the mixed precipitation pond of waterpower hybrid mode, be different from general accelerator and circulatior clarifier, do not adopt any mechanical stirring equipment or water sprayer, utilize gravity and the initial flow rate of current completely, make water and coagulating agent produce eddy current and backflow at inside reactor, abundant contact flocculation, thereby improved the mixed effect of medicament, reduced the use of whipping device, reduced the consumption of the energy, reduced operation and maintenance cost, make easy to maintenance.
For realizing above-mentioned task, the present invention adopts following technical solution:
A kind of eddy current type mixing reactor, it is characterized in that, by the first cylinder being interconnected, shrink centrum, expansion centrum, the second cylinder composition, shrink between centrum and expansion centrum and form aditus laryngis, on the first cylinder, be provided with water inlet pipe, there is feeding opening at the top of the first cylinder and observes thief hole, the second cylinder bottom is provided with water outlet, is mainly used in coagulation process; Wherein:
The height dimension ratio of the first cylinder, contraction centrum, expansion centrum, the second cylinder is 3:5:1:10, the diameter proportion of the first cylinder, aditus laryngis, the second cylinder is 15:1:5, the angle of shrinking cone is 46.97 °, and the angle of expansion centrum is 30.96 °.
Another kind of technical solution of the present invention is:
A kind of eddy current type mixed precipitation integral reactor, it is characterized in that, by the first cylinder being interconnected, shrinking centrum, expansion centrum, the second cylinder, flow deflector and settling region forms, shrink between centrum and expansion centrum and form aditus laryngis, on the first cylinder, be provided with water inlet pipe, there is feeding opening at the top of the first cylinder and observes thief hole, the second cylinder connects settling region via flow deflector, the eddy current type mixing reactor of comparing above-mentioned, its feature is mainly Hou Jialiao settling region, mixing zone, is mainly used in precipitation process of coagulation; Wherein:
The height dimension ratio of the first cylinder, contraction centrum, expansion centrum, the second cylinder is 3:5:1:10, the diameter proportion of the first cylinder, aditus laryngis, the second cylinder is 15:1:5, the angle of shrinking cone is 46.97 °, and the angle of expansion centrum is 30.96 °;
On settling region, there is annular collecting vat, below annular collecting vat, have rising pipe, below settling region, have bucket and shore pipe.
Eddy current type mixed precipitation integral reactor of the present invention, can be used for all chemical industry and other fields that relate to liquid and medicament, liquid and liquid mixing or composite liberation.Compare with domestic and international prior art, have the following advantages:
1, simple structure.This reactor eddy current type mixed precipitation integral type is divided into two portions: eddy current mixing zone and settling region, adopt waterpower hybrid mode, and do not adopt mechanical stirring.
2, mixing zone produces and refluxes.Current are tangentially water inlet in the first cylinder, forms vortex motion, and rotation limit, limit flows downward.When water flows to throat, because cross section sharply dwindles, current flow into expansion segment with very large speed straight down, expansion segment is because cross section becomes suddenly large, be subject to entrainmenting of the longitudinal jet of water, the following local flow of throat is very complicated, has formed extremely strong eddy current and turbulent region, velocity slope is large, and larger recirculating zone appears in nearly wall place.
3, to go out water speed little in mixing zone, and the more conventional flocculation basin of mixing time is short.While entering settling region by mixing zone, flow velocity is minimum, meets the settling tank desired speed of intaking.Water flow energy, under the effect of eddy current, fully mixes with medicine, has reduced mixing time.
4, good, the drug dose of coagulation effect reduces.This eddy current type mixed precipitation integral reactor utilizes vortex principle, and medicine is fully mixed with water, and medicine, along with current are at the abundant contact flocculation in eddy current mixing zone, has reduced the dosage of medicine, has saved medicament expense use.
5, siphon pipe water inlet.Before eddy current type mixed precipitation integral reactor, connect elevated tank, adopt siphonal mode to control water inlet, siphonal hydraucone is arranged on the lowest water level place of elevated tank, and when water level exceeds lowest water level, siphon pipe starts water suction; When water level is during lower than lowest water level, siphon is destroyed, stops supplying water.Adopt siphon pipe conveyance fluid without any additionaling power, the combination of siphon pipe and elevated tank can the appropriate regulation water yield and the flow velocity of intaking, and this reactor that is both can succession running, also can periodic running.
6, this eddy current type mixed precipitation integral reactor can be applicable to different occasions.In the place that possesses settling tank, the eddy current type mixing reactor that can be used alone is as dosing coagulation basin; In the occasion not high to water quality requirement, can adopt this eddy current type mixed precipitation integral reactor directly to dispose of sewage or waste water etc.
7, manageability is safeguarded, running cost is extremely low.There is no mechanical stirring equipment, not only saved maintenance of equipment expense, reduced the difficulty of maintenance management, also saved the consumption of the energy.This facility investment cost is little, and marketing has a extensive future.
Accompanying drawing explanation
Fig. 1 is the structural representation of eddy current type mixing reactor of the present invention.
Mark in figure represents respectively: 1, water inlet pipe, the 2, first cylinder, 3, shrink centrum, 4, expansion centrum, the 5, second cylinder, 6, water outlet, 11, drug-feeding tube, 12, observe thief hole.
Fig. 2 is eddy current type mixed precipitation integral reactor one-piece construction schematic diagram of the present invention.Wherein, after the water outlet of mixed solution by the eddy current type mixing reactor of Fig. 1, by the circular hole of eddy current type mixing reactor outer wall, through flow deflector, enter settling region.
Fig. 3 is the vertical view of Fig. 2.
Mark in figure represents respectively: 1, water inlet pipe, the 2, first cylinder, 3, shrink centrum, 4, expansion centrum, the 5, second cylinder, 6 ', circular hole, 7, bucket, 8, settling region, 9, annular collecting vat, 10, rising pipe, 11, drug-feeding tube, 12, observe thief hole, 13, shore pipe, 14, flow deflector.
Fig. 4 is through the 12.3L eddy current type mixed precipitation integral reactor Chinese traditional medicine of FLUENT simulation trajectory diagram in time in embodiment 1.Medicine in this figure is consistent with the track of current, and the partial reflux region that aditus laryngis lower end produces had both made medicine and the current residence time extend, and had increased the mixing time of medicine and current, had also strengthened eddy current and turbulent mixing effect, had improved mixed effect.
Fig. 5 is through the pressure cloud atlas of the 12.3L eddy current type mixed precipitation integral reactor of FLUENT simulation in embodiment 1.In this figure, aditus laryngis lower end produces negative pressuren zone, makes the water in this region can produce nearly wall backflow.
Fig. 6 is the speed vector figure of water in the 12.3L eddy current type mixed precipitation integral reactor of simulating through FLUENT in embodiment 1.This figure has mainly explained the movement locus of current.
Fig. 7 is through the turbulence dissipative shock wave figure in the 12.3L eddy current type mixed precipitation integral reactor exit of FLUENT simulation in embodiment 1.By λ 0=(υ 3/ ε) 1/4known, work as λ 0more approach particle diameter, illustrate that intergranular mutual collision is stronger.Wherein υ refers to the kinematic viscosity of fluid, and ε refers to turbulence dissipative shock wave.
Fig. 8 is the 12.3m simulating through FLUENT in embodiment 2 3eddy current type mixed precipitation integral reactor Chinese traditional medicine trajectory diagram in time.Medicine in this figure is consistent with the track of current, and the partial reflux region that aditus laryngis lower end produces had both made medicine and the current residence time extend, and had increased the mixing time of medicine and current, had also strengthened eddy current and turbulent mixing effect, had improved mixed effect.
Fig. 9 is the 12.3m simulating through FLUENT in embodiment 2 3the pressure cloud atlas of eddy current type mixed precipitation integral reactor.In this figure, aditus laryngis lower end produces negative pressuren zone, makes the water in this region can produce nearly wall backflow.
Figure 10 is the 12.3m simulating through FLUENT in embodiment 2 3the speed vector figure of water in eddy current type mixed precipitation integral reactor.This figure has mainly explained the movement locus of current.
Figure 11 is the 12.3m simulating through FLUENT in embodiment 2 3the turbulence dissipative shock wave figure in eddy current type mixed precipitation integral reactor exit.By λ 0=(υ 3/ ε) 1/4known, work as λ 0more approach particle diameter, illustrate that intergranular mutual collision is stronger.Wherein υ refers to the kinematic viscosity of fluid, and ε refers to turbulence dissipative shock wave.
Below in conjunction with drawings and Examples, the present invention is described in further details.
Embodiment
According to technical scheme of the present invention, a kind of eddy current type mixing reactor, is mainly comprised of the first cylinder 2 being interconnected, contraction cone 3, expansion centrum 4, the second cylinder 5 four parts, shrinks between centrum 3 and expansion centrum 4 and forms aditus laryngis; There is feeding opening 11 at the top that is provided with water inlet pipe 1, the first cylinder 5 on the first cylinder 5 and observes thief hole 12;
Or after flow deflector, enter settling tank 8 after the second cylinder 5; The scale parameter of the first cylinder 2 wherein, contraction cone 3, expansion centrum 4, the second cylinder 5 and aditus laryngis each several part is determined by FLUENT software simulation, by medicine trajectory diagram, pressure cloud atlas, turbulence intensity cloud atlas, turbulent flow energy consumption cloud atlas, determine optimum proportion respectively, the mimic diagram of optimum proportion is: in expansion centrum 4 some drugs trajectory diagrams, have reflux state; There is negative pressuren zone at pressure cloud atlas place; The turbulence intensity in exit and turbulent flow energy consumption are maximum.
After carrying out FLUENT simulation, according to these three evaluation indexes, determine optimum proportion, obtained the first cylinder 2, shunk cone 3, the height optimum proportion of expansion centrum 4, the second cylinder 5 has been 3:5:1:10; The diameter proportion of the first cylinder 2, aditus laryngis, the second cylinder 5 is 15:1:5; Now shrinking cone 3 angles is 46.97 °, and the angle of expansion centrum 4 is 30.96 °; The scale of this eddy current type mixing reactor can proportionally be carried out convergent-divergent with the difference of processing the water yield; The size of feeding opening 11 finds that after simulation mixed effect and feeding opening 11 sizes have nothing to do, and therefore adopt the feeding opening size of regular size; The size of water-in 1 should be definite according to the eddy current type mixed precipitation integral reactor analog result of different volumes, and when eddy current type mixing reactor is 41.5m 3time, the diameter of water-in 1 should not be greater than 300mm.
Settling region 8 adopts radical sedimentation basin form, center water inlet peripheral effluent, and spoil disposal is carried out with the form of shore pipe in bottom.The reaction zone water inlet of this eddy current type mixed precipitation integral reactor adopts tangential water intake mode, the water outlet of effluent adopting annular collecting vat.
Below the embodiment that contriver provides.
Embodiment 1:
Reference example Fig. 1, the present embodiment provides a kind of concrete structure of mixing zone of eddy current type mixing reactor, by the first cylinder 2, shrink centrum 3, expansion centrum 4, the second cylinder 5 compositions, on the first cylinder 2, be provided with water inlet pipe 1, the top of the first cylinder 2 has feeding opening 11 and observation thief hole 12, the second cylinder 5 bottoms to be provided with water outlet 6.
The volume of this eddy current type mixing reactor is 12.3L, adopts synthetic glass to make, and is mainly used in treating lab acid waste water in a small amount, and the medicament adding is magnesium hydroxide.Analog result, with reference to Fig. 4, Fig. 5, Fig. 6, Fig. 7, is mainly the analog result of this eddy current type mixing reactor interior flow field, and this eddy current type mixing reactor each several part size is as follows:
1) diameter of the first cylinder 2 is 0.3m, is highly 0.09m;
2) the upper diameter of contraction centrum 3 is 0.3m, and lower diameter is 0.02m, is highly 0.15m;
3) the upper diameter of expansion centrum 4 is 0.02m, and lower diameter is 0.1m, is highly 0.03m;
4) diameter of the second cylinder 5 is 0.1m, is highly 0.3m;
5) total height of eddy current type mixing reactor is 0.57m.
Operation scheme is operation continuously.The eddy current type mixing reactor that adopts the present embodiment to make, carries out process method step to laboratory acid waste water as follows:
1,, according to the eddy current type mixing reactor mixing zone shown in illustration 1, elevated tank of the front connection of water inlet pipe 1, for storing laboratory experiment acid waste water used.Acid waste water tangentially enters eddy current type mixing reactor by water inlet pipe 1, on the first cylinder 2 inner edge rotation limits, flow downward, produce huge eddy current, now magnesium hydroxide is injected acid waste water body center from feeding opening 11 simultaneously, be subject to entrainmenting of eddy current, with current, move, when the two enters expansion centrum 4 by contraction centrum 3 together, aditus laryngis part through supercontraction centrum 3 and expansion centrum 4 formations, because fluid enters suddenly cross section smaller portions, therefore having produced very large speed flows downward, when entering expansion centrum 4, owing to becoming suddenly again large due to cross section, be subject to entrainmenting of the longitudinal jet of fluid, velocity slope is large, there is larger recirculating zone in the nearly wall place at expansion centrum 4 and the second cylinder 5, this place has produced negative pressure, now magnesium hydroxide and acid waste water can carry out backflow campaign repeatedly in this region, carry out neutralization reaction, then fluid has flowed out reactor from water outlet 6 stably.
2, water inlet pipe 1 is located at the first cylinder 2 tops, tangential water inlet, the diameter of water inlet pipe 1 is 25mm, adopts peristaltic pump to control water inlet water speed, according to flow and lift, selection pump type is WT600S, flow is 1.8mL/min~2300mL/min, connects the sebific duct that diameter is 25mm, and therefore adopting pump head is YZ1 * 4, after 4 flexible pipe parallel connections, the pipeline that connection diameter is 25mm enters eddy current type mixed precipitation integral reactor.Water inlet flow velocity is set as 0.2m/s, sets density water consistent during with 20 ℃ enter the sewage in this reactor.The theoretical water power residence time of 12.3L eddy current type mixing reactor can be regarded as to such an extent that be 125s according to eddy current type mixing reactor volume and flooding quantity, and illustration 4 shows that the hydraulic detention time of this eddy current type mixing reactor has reached 380s left and right, therefore extend the hydraulic detention time of alkaline agent and acid waste water, also strengthened the effect of its mixing.
3, feeding opening 11 is located at the first cylinder 2 top center places, and the diameter of feeding opening 11 is 25mm, and dosing method is that solid adds, and the medicine adding is magnesium hydroxide, and the particle diameter of magnesium hydroxide is 2 * 10-5m.Dosing speed is 3.4 * 10 -03g/s, adopts peristaltic pump BJ100-2J to control dosing speed, and pumping capacity is 0.002~380mL/min.
4, according to formula λ 0=(υ 3/ ε) 1/4calculate the eddy size λ of gained 0close with particle diameter or while being slightly larger than, reaction mixed effect is best.Kinematic viscosity υ=1.0 * 10 of water -6m 2s -1, according to the known ε value of illustration 7, mainly concentrate on ε=1.6 * 10 -2m 2s -1in scope, therefore, λ 0=9 * 10 -5m, approaches the particle diameter 2 * 10 of medicine -5m, shows that the collision between particle is very strong, also proves that this eddy current type mixed precipitation integral reactor mixing efficiency is high.
5, by Fig. 4,5,6, can be found out, this eddy current type mixing reactor inside has produced great vorticity district, and when by Fig. 7, known eddy size approaches the diameter of particle again, coagulation effect is best.Therefore can judge that this eddy current type mixed precipitation integral reactor water outlet fully mixes.
6, the density size of selected medicine on simulation reaction result without impact.Because handled laboratory acid waste water is the waste water having diluted, thus density and water difference little, on reaction result also not impact.Because magnesium hydroxide and acid-respons produce without precipitation, therefore without precipitate and separate, after neutralization, can directly enter municipal sewage system pipe network.
7, water outlet (6) locates to connect 2 45 ° of elbows, for accessing among city planting ductwork or next stage process and arrange.In the present embodiment, 2 45 ° of elbows are for detection of water quality and flow velocity, and elbow is received in the water tank in laboratory.
8, operation scheme can continuously, also can intermittent operation.
Embodiment 2:
Reference example Fig. 2, the present embodiment provides a kind of eddy current type mixed precipitation integral reactor concrete structure, mixing zone and settling region 8 by embodiment 1 form, difference is that the second cylinder 5 in the eddy current type mixed precipitation integral reactor mixing zone part of embodiment 1 connects settling region 8 by flow deflector and forms integral structures, on settling region 8, there is annular collecting vat 9, below annular collecting vat 9, have rising pipe 10, below settling region 8, have bucket 7 and shore pipe 13.
In the present embodiment, the reaction designing time of the eddy current type mixed precipitation integral reactor of embodiment 1 is 20 minutes, and the 8 reaction designing times of settling region are 1.8 hours.
The volume of the eddy current type mixed precipitation integral reactor in the present embodiment is 12.3m 3, the accelerator of coagulating sedimentation while being mainly used in replacing drinking water treatment or recycling sewage generated by making.This eddy current type mixed precipitation integral reactor adopts steel plate structure or skeleton construction, establishes elevated tank, the water outlet of water tank effluent adopting siphon pipe before eddy current type mixed precipitation integral reactor.Dosing method is that solid adds or liquid adds, and the medicine adding is polymerize aluminum chloride (PAC).Analog result reference example Fig. 8, illustration 9, illustration 10, illustration 11, illustration is mainly the analog result in flow field, reactor mixing zone.
The eddy current type mixed precipitation integral reactor each several part size of the present embodiment is as follows:
1) diameter of the first cylinder 2 is 3m, is highly 0.9m;
2) the upper diameter of contraction centrum 3 is 3m, and lower diameter is 0.2m, is highly 1.5m;
3) the upper diameter of expansion centrum 4 is 0.2m, and lower diameter is 1m, is highly 0.3m;
4) the second cylinder 5 diameters are 1m, are highly 3m; Mixing zone total height is 5.7m.
Settling region is of a size of:
1) overall diameter of settling region 8 is 6m, and pool side height is 2.5m, and protection is highly 0.3m, and the settling region water surface is lower than water surface 0.2m in mixing reactor;
2) the upper diameter of bucket 7 is 2.5m, and lower diameter is 0.2m, is highly 2m;
3) height of annular collecting vat 9 is 0.72m;
4) diameter of shore pipe 10 is 100mm;
5) flow deflector 14 is apart from reactor outer wall 0.5m, and circular hole 6 ' diameter is 0.5m.
6) settling region height overall is 5.5m.
Operation scheme is intermittent operation.The eddy current type mixed precipitation integral reactor that adopts the present embodiment to make, as follows to sewage water treatment method step:
1, according to the eddy current type mixed precipitation integral reactor shown in Fig. 1, current tangentially enter eddy current type mixed precipitation integral reactor by water inlet pipe 1, on the first cylinder 2 inner edge rotation limits, flow downward, produce huge eddy current, now medicine is injected water body center from feeding opening 11 simultaneously, be subject to entrainmenting of eddy current, with current, move, when the two enters expansion centrum 4 by contraction centrum 3 together, through aditus laryngis part, because fluid enters suddenly cross section smaller portions, therefore having produced very large speed flows downward, while entering expansion centrum 4, owing to becoming suddenly large due to cross section, be subject to entrainmenting of the longitudinal jet of fluid, velocity slope is large, there is larger recirculating zone in the nearly wall place at expansion centrum 4 and the second cylinder 5, this place has produced negative pressure, now medicine and water can carry out backflow campaign repeatedly in this region, then fluid stably from the water outlet of mixing zone via circular hole 6 ' enter guiding region, through flow deflector 14, entering settling region 8 precipitates, in settling region, 8 design sedimentation time is 1.8h, water after abundant precipitation, enter in annular collecting vat 9, then via rising pipe 10, enter in next treatment facility.Known according to Figure 10, while entering settling region 8, mixing zone flow velocity is extremely low, meet the design current velocity that enters settling tank, so precipitate and separate is effective.
2, water inlet pipe 1 is located at the first cylinder 2 tops, connects the siphon pipe of elevated tank above, tangentially water inlet, and water inlet pipe 1 size is 100mm, water intake velocity is 1.5m/s.Adopt submersible sewage pump to control flow, pump adopts QW submersible sewage pump, and model is QW100-100-30-15, and lift is 30m, and flow is 100m 3/ h.The density that setting enters the sewage in this eddy current type mixed precipitation integral reactor water consistent during with 20 ℃.This 12.3m 3theoretical water power residence time of eddy current type mixed precipitation integral reactor, according to its volume and the ratio of flooding quantity, calculate as 1044s, and Fig. 8 shows that the hydraulic detention time of this eddy current type mixed precipitation integral reactor is 1400s, therefore extend the hydraulic detention time of flocculation agent and waste water, also strengthened the effect of its mixing.
1, feeding opening 11 is located at the first cylinder 2 top center places, and dosing mouth size is 25mm, and polymerize aluminum chloride particle diameter is 1 * 10 -4m.Dosing speed is 0.42g/s, can adopt JY type automatic chemical dosing device to carry out medicine and add.
2, according to formula λ 0=(υ 3/ ε) 1/4can calculate eddy size λ 0close with particle diameter or while being slightly larger than, reaction mixed effect is best, kinematic viscosity υ=1.0 * 10 of water -6m 2s -1, according to the known ε value of illustration 11, mainly concentrate on ε=5 * 10 -4m 2s -1, according to formula, calculate eddy size λ 0=2 * 10 -4m, with the particle diameter 1 * 10 of polymerize aluminum chloride -4m approaches, and therefore illustrates that the collision between particle is strong, and flocculating effect is good, proves that the mixing efficiency of this eddy current type mixed precipitation integral reactor is good.
3, by Fig. 8,9,10 can find out, eddy current type mixed precipitation integral reactor inside has produced great vorticity, by Figure 11, can know that again eddy size approaches the diameter of particle, and coagulation effect is best.Therefore the mixing efficiency in the time of can judging this eddy current type mixed precipitation integral reactor water outlet is good.
4, the density size of selected medicine on simulation reaction result without impact.Because handled, be mainly city domestic sewage, thus density and water difference little, on reaction result also not impact.Water after processing by this eddy current type mixed precipitation integral reactor, can directly enter among clean water basin.
5, adopt succession running.

Claims (5)

1. an eddy current type mixing reactor, it is characterized in that, by the first cylinder (2) being interconnected, shrink centrum (3), expansion centrum (4), the second cylinder (5) composition, shrink between centrum (3) and expansion centrum (4) and form aditus laryngis, on the first cylinder (2), be provided with water inlet pipe (1), there is feeding opening (11) at the top of the first cylinder (2) and observes thief hole (12), and the second cylinder (5) bottom is provided with water outlet (6); Wherein:
The height dimension ratio of the first cylinder (2), contraction centrum (3), expansion centrum (4), the second cylinder (5) is 3:5:1:10, the diameter proportion of the first cylinder (2), aditus laryngis, the second cylinder (5) is 15:1:5, the angle of shrinking cone (3) is 46.97 °, and the angle of expansion centrum (4) is 30.96 °.
2. an eddy current type mixed precipitation integral reactor, it is characterized in that, by the first cylinder (2) being interconnected, shrink centrum (3), expansion centrum (4), the second cylinder (5) and settling region (8) composition, shrink between centrum (3) and expansion centrum (4) and form aditus laryngis, on the first cylinder (2), be provided with water inlet pipe (1), there is feeding opening (11) at the top of the first cylinder (2) and observes thief hole (12), the second cylinder (5) lower end is provided with circular hole (6 '), and current enter settling region (8) by flow deflector (14) water conservancy diversion; Wherein:
The height dimension ratio of the first cylinder (2), contraction centrum (3), expansion centrum (4), the second cylinder (5) is 3:5:1:10, the diameter proportion of the first cylinder (2), aditus laryngis, the second cylinder (5) is 15:1:5, the angle of shrinking cone (3) is 46.97 °, and the angle of expansion centrum (4) is 30.96 °;
On settling region (8), have annular collecting vat (9), in annular collecting vat (9) below, have rising pipe (10), in settling region, there are bucket (7) and shore pipe (13) in the below of (8).
3. eddy current type mixing reactor as claimed in claim 1, is characterized in that, the diameter of described feeding opening (11) is 25mm, with water yield size, does not change; The diameter of water inlet pipe (1) is with the different bi-directional scalings of processing the water yield, but is not more than 300mm.
4. eddy current type mixed precipitation integral reactor as claimed in claim 2, is characterized in that, the diameter of described feeding opening (11) is 25mm, with water yield size, does not change; The diameter of water inlet pipe (1) is with the different bi-directional scalings of processing the water yield, but is not more than 300mm.
5. eddy current type mixing reactor as claimed in claim 1, is characterized in that, connects 2 45 ° of elbows on described water outlet (6), for accessing among city planting ductwork or next stage process and arrange.
CN201310227377.6A 2013-06-07 2013-06-07 Vortex-type mixing sedimentation integrated reactor Expired - Fee Related CN103351043B (en)

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