CN100575274C - Adjustable waterpower rotational flow coagulation tube - Google Patents
Adjustable waterpower rotational flow coagulation tube Download PDFInfo
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- CN100575274C CN100575274C CN200810062575A CN200810062575A CN100575274C CN 100575274 C CN100575274 C CN 100575274C CN 200810062575 A CN200810062575 A CN 200810062575A CN 200810062575 A CN200810062575 A CN 200810062575A CN 100575274 C CN100575274 C CN 100575274C
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Abstract
The present invention relates to a kind of adjustable waterpower rotational flow coagulation tube.Be disposed with chemical feed pipe, 3～6 adjustable eddy flow turbulence generators and 2～5 adjustable cyclone producers along water (flow) direction in the body of the present invention chamber.Adjustable eddy flow turbulence generator includes the identical a plurality of fan-shaped blades of shape with the adjustable cyclone producer, and an end of each fan-shaped blade is connected ball and flexibly connects with the center, and the other end is fixedly connected with corresponding turning handle by outer shaft, has chute on the turning handle.The outer side wall of body is provided with the swiveling ring that can rotate around the circumference of body, the chute flexible connection on the slide block that is provided with on the swiveling ring and the corresponding turning handle.Be set with handle on the swiveling ring.The present invention can be used for the processing of water supply purification and sanitary sewage and trade effluent, can be according to coming water water quality and load thereof, institute's dosing dosage and physical condition flexible such as kind, water factory's treatment process.But the present invention is enhanced coagulation both, can regulate according to the variation of each operating parameter again.
Description
Technical field
The invention belongs to water-treatment technology field, specifically relate to a kind ofly be used to feed water and the adjustable waterpower rotational flow coagulation tube of sewage, wastewater treatment.
Background technology
The generally pollution of China's source quality has become the outstanding problem in water environment pollution control and water resources protection field.Providing safe drinking water to the public is the important composition part of protecting public health, water supply industry not only faces the multiple pressure that source quality pollution, sudden change of water quality, water supply quality standard improve constantly, simultaneously also in the face of an urgent demand of reduce production costs expense and water technology automatization.
In the water resources anxiety; when former water quality constantly worsens; because industrial development and the development of Population Urbanization and the needs of environment protection, the processing of sanitary sewage and trade effluent also is on the increase, and their recycling treatment has become an important means of replenishing China's insufficient water sources.China's rapid economic development in recent years, particularly Development of Private Economy is swift and violent, and medium and small industrial enterprise is more, the aggravation of Population Urbanization process, the processing load of resident living and industrial water supply purification and sanitary sewage, trade effluent is heavier, and the daily load fluctuation is bigger.
Coagulating treatment is unusual the key link in the conventional water treatment, and by coagulation, particularly enhanced coagulation can remove most turbidity materials and most of organism in the former water, wherein many still precursors of disinfection byproduct (DBP).Facts have proved that good coagulation effect not only can improve effluent quality, can also reach the purpose that energy-conservation joint medicine reduces working cost.
Coagulation process can be divided into mixing and agglomeration phase and flocculation stage.Mix with cohesion and be meant that flocculation agent mixes the process with the small flocs unit of the steady formation of taking off of diffusion and hydrophobic colloid (flocculation is examined) in water.Flocculation refers to that colloid forms the flocculation process of flco.
The rapid diffusion in water of coagulation effect and coagulating agent has substantial connection, and behind the adding coagulating agent, produce two kinds of effects: 1. coagulating agent spreads in water and mixes in the former water; 2. coagulating agent hydrolysis, hydrolysate and colloidal solid effect are taken off surely it.Owing to hydrolysis, take off the speed stabilizing degree and be far longer than coagulating agent rate of diffusion in water, so can water-borne glue body particle take off rapidly surely, the diffusion of coagulating agent just becomes determinative.Therefore the rapid mixing of coagulating agent is vital for improving flocculating effect, if coagulating agent can not be rapidly and uniform mixing, it is big then to take off steady knot rapidly at the more position colloidal solid of coagulating agent, and the insufficient local colloidal solid of coagulating agent just lacks the big condition of knot.Suitable mixing hydraulics is the prerequisite that the coagulating agent performance is renderd a service, and can improve the coagulation effluent quality simultaneously.
Mixing process is to spread and molecular diffusion by main diffusion, vortex under the forced convection effect, finally reaches the molecular level uniform mixing.Just the medicament that adds at first forms the vortex micelle of big scale, under turbulent flow stretching, shearing action, maelstrom splits into the vortex than small scale, energy is delivered to little vortex from maelstrom, little vortex is then to littler vortex transmission, up to small scale more is the vortex of wide Lip river husband (Kolmogoroff) yardstick of Ka Erma, is heat because of the effect of viscous stress dissipates at last.This process shows, mixing at first will be from the large-scale convection campaign, and succeeded by small scale, i.e. littler micelle further is out of shape, is divided into to vortex diffusion to bigger drop micelle, by the diffusion of the vortex between the little micelle interface, degree of irregularity is reduced to the size of vortex itself.Up to reaching the Kolmogoroff yardstick, Here it is macroscopical blended to greatest extent.Microcosmic mixes the mixing that is meant on the molecular scale, and its final realization can only be leaned on the molecular diffusion in the smallest dimension micelle.Main body convection current diffusion in the hybrid technique process, vortex diffusion, 3 kinds of mechanism of molecular diffusion exist simultaneously.Because molecular diffusion speed is much larger than the vortex velocity of diffusion, vortex diffusion couple mixing time plays a leading role.
After mixing, because the effect of cohesion has formed a large amount of small flocculation nuclears rapidly, flocculation nuclear is constantly grown up become big and closely knit flocs unit, need two basic premises, the gathering after intergranular contact (i.e. collision) and the contact.The most important condition that makes particle produce coagulation is a contact-impact, and in the industrial coagulation process, turbulent area occupies absolute status, and the turbulent flow power of current water (turbulent shear and turbulent flow inertial impaction) effect plays a leading role to quickening the particle coagulation.
No matter be to mix or the flocculation reaction process, all size and the intensity with current turbulence, vortex has confidential relation.By organizing suitable hydraulics, make flocculation agent mix rapidly with former water, make flocculation nuclear wait molecule and current to produce relative movement afterwards, thereby quicken the collision between the particle, be the core concept of enhanced coagulation.Studies show that will make particle and current generation relative movement in the water, best bet is the speed that changes current.Because the inertia of water (density) is different with particulate inertia (density), their velocity variations (acceleration) is also different when flow velocity changes, this just makes water and solid particulate wherein produce relative movement, for adjacent different scale particle collision provides condition.Change speed method has two kinds: V-bar size when 1. changing current.Little throwing out mainly is exactly that the inertial effect that the V-bar variation causes when utilizing current is flocculated; 2. change the direction of a stream of water.Because big and small abrim vortex in the turbulent flow, therefore the current particle changes direction of motion constantly, solid particulate radially produces relative movement with current under the centrifugal intertia force effect, for the different scale particle provides condition along the radial impact of turbulent eddy.
Because of the water load variations causes the effluent quality instability is the problem of often facing in the production run of China water factory.Particularly when load is low, because flow rate of water flow is lower, make the mixed effect variation, utilize mixing equipment (for example SK type static mixer) commonly used at present to be difficult to form at short notice a large amount of flocculation nuclear, make the dose that adds of handling the former water water yield of unit increase, also be unfavorable for the precipitation of later stage flocs unit simultaneously.In addition, along with changes of seasons, bigger variation also can take place in water intaking water source turbidity and temperature, makes coagulation property change to some extent.And in the purifying treatment field of sanitary sewage, trade effluent, difference according to its concrete source, the sewage of required processing and the quality of waste water and composition vary especially, and this also can make used medicament kind and add dose, and water technology changes.Under existing situation, but a kind of both enhanced coagulations of development, and the waterpower coagulation apparatus that can carry out flexible according to former water quality, load, medicament kind and the variation that adds each operation conditions such as dose and parameter thereof is the present task of top priority again.
Summary of the invention
Purpose of the present invention is exactly at the deficiencies in the prior art, but a kind of both enhanced coagulations are provided, and can carry out the waterpower rotational flow coagulation tube of flexible again according to former water quality, load, medicament kind and the variation that adds each operation conditions such as dose and parameter thereof.
Adjustable waterpower rotational flow coagulation tube of the present invention comprises body, be disposed with 3～6 adjustable eddy flow turbulence generators and 2～5 adjustable cyclone producers along water (flow) direction in the body chamber, adjustable eddy flow turbulence generator and adjustable cyclone producer all with axially vertical setting of body.The tube wall of position is set with chemical feed pipe between the former water inlet of body and first the adjustable eddy flow turbulence generator, and chemical feed pipe one end opening is in tube cavity, and the other end is communicated with dosing pump.Distance between adjacent two adjustable eddy flow turbulence generators and the distance between adjacent two adjustable cyclone producers are 1～3 times of internal diameter of tube body, and adjacent adjustable eddy flow turbulence generator and the distance between the adjustable cyclone producer are 1～5 times of internal diameter of tube body.
Described adjustable eddy flow turbulence generator includes the identical a plurality of fan-shaped blades of shape with the adjustable cyclone producer, and the inner arc end of each fan-shaped blade is fixed with interior rotating shaft, the outer arc end is fixed with outer shaft.The interior rotating shaft of each fan-shaped blade is connected ball and flexibly connects with the center.The outer shaft of each fan-shaped blade passes that the sidewall of body is fixedly connected with corresponding turning handle, and outer shaft is vertical with turning handle to be provided with, and has chute on the turning handle, and described chute is oblique bar shaped groove.
The fan-shaped blade of adjustable eddy flow turbulence generator is 4～12, and its fan-shaped angle is 30 °～90 °; The fan-shaped blade of adjustable cyclone producer is 8～24, its fan-shaped angle is 15 °～45 °, wherein the fan-shaped blade quantity of first adjustable cyclone producer is greater than the fan-shaped blade quantity of the adjustable eddy flow turbulence generator that is adjacent, and the fan-shaped blade quantity of the adjustable cyclone producer of its back reduces successively.
Correspondence position with each adjustable eddy flow turbulence generator or adjustable cyclone producer on the outer side wall of body is provided with swiveling ring, each swiveling ring and the coaxial setting of body, and flexibly connect by support roller with the outer side wall of body, can rotate around the circumference of body.Corresponding each turning handle position is provided with slide block on the swiveling ring, the chute flexible connection on each slide block and the corresponding turning handle.Be set with handle on the swiveling ring, the steady brace on the handle is connected with the stopper slot that is fixed on the limited block of body outer side wall.
Be mixing section between first adjustable eddy flow turbulence generator and first adjustable cyclone producer among the present invention, be the flocculation section between first adjustable cyclone producer and the concrete pipe exit end.At mixing section, by adjustable vane current are produced strong disturbance and cut apart, produce secondary flow and a large amount of vortex simultaneously, make medicament mix rapidly with former water; In the flocculation section, the adjustable cyclone producer that current vary in size through blade in different steps, produce the size controlled orderly vortex different with intensity, increase particulate effective collision in the current, the flocculation reaction of acceleration initial stage produces closely knit flocs unit, for the later stage flocculation sediment is created top condition, improve water treatment capacity, improve effluent quality simultaneously.This equipment can be used for the processing of water supply purification and sanitary sewage and trade effluent, simultaneously can be according to coming water water quality and load thereof, institute's dosing dosage and physical condition flexible such as kind, water factory's treatment process.
The current that the present invention makes full use of the swirl vane that flows through different size and angle produce the eddy flow of varying strength and this ydrodynamics principle of vortex of different size and intensity, and their favourable influences to mixing and flocculating.The present invention can regulate according to the variation of variation, flocculation agent kind and the consumption thereof of the variation of water load and parameter request thereof, raw water quality, reaches optimum waterpower coagulation condition, and is the good condition of later stage flocculation sediment creation.Simultaneously, because its controllability,, can react rapidly for the sudden water quality deterioration of similar Taihu Lake this class of blue-green algae, have good should be acute.By this new type of adjustable waterpower coagulation apparatus to mixing and the reinforcement of flocculation, make follow-up flocculation sediment carry out more fully, rapid, to improve the processing power and the water outlet quality of water factory.This equipment does not have mechanical stirring to mix the complicated rotatable parts of facility, so failure rate is low, and easy maintenance, also extra power input.Because it is installed in the pipe, need not lay the space, flexible arrangement by extra equipment.And range of application is wide, both can be used for civilian and processing industrial water supply, and the harmless resource that can be used for sanitary sewage and trade effluent is again handled.If adopt motorized adjustment, be easy to realize automatic control.
The present invention has the following advantages and gives prominence to effect: medicament and former water are through behind first adjustable eddy flow turbulence generator, make fluid produce tangential swirl, simultaneously because the stickiness power of blade and tube wall convection cell, make fluid produce the secondary flow of a plurality of directions, greatly promoted the convection current diffusion of medicament in former water.And make the turbulence degree of fluid inside increase, make medicament mix rapidly with former water.Through behind the opposite or identical follow-up adjustable eddy flow turbulence generator of some directions of eddy flow with it of flowing through, fluidic turbulence degree further strengthens again.This not only makes the convection current diffusion further strengthen, and produces a large amount of high-intensity small scale vortexs, makes medicament strengthen in mixing further of submicroscopic yardstick (eddy size) with former water.In flocculation section, the flow through blade of the many and narrow adjustable cyclone producer of quantity of fluid makes the quantity of fluid Small and Medium Sized vortex and intensity increase, and has strengthened the effective collision of flocculation nuclear, has greatly promoted the generation and the growth of small flocs unit.In the flocculation section later stage, the size of flocs unit increases to some extent, the fluid bigger blade of flowing through, make the quantity and the intensity of big scale vortex increase, both promoted the further growth of big scale flocs unit, avoid the miniature scale vortex to cross the shearing action of flocs unit greatly to having generated by force again, also further improved the density of flocs unit, helped the later stage precipitation.Use this equipment,, can make it under the situation of identical water treatment load, to make the flocculation sedimentation tank scale down for newly-built water factory; For old water factory, because required flocculation time shortens in the flocculation sedimentation tank, sedimentation time increases relatively, has improved water treatment capacity.
Description of drawings
Fig. 1 is an one-piece construction simplified schematic diagram of the present invention;
Fig. 2 is the structural representation of adjustable eddy flow turbulence generator and adjustable cyclone producer among Fig. 1;
Fig. 3 is the graph of relation of blade angle of rotation and mixedness;
Fig. 4 is the graph of relation of blade angle of rotation and resistance.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention, structure are described further.
As shown in Figure 1, arrow is a water (flow) direction among the figure.Adjustable waterpower rotational flow coagulation tube comprises body 3, is disposed with three adjustable eddy flow turbulence generators 2 and two adjustable cyclone producers 4 along water (flow) direction in body 3 chambeies, adjustable eddy flow turbulence generator 2 and adjustable cyclone producer 4 all with body 3 axial vertical settings.The tube wall of position is set with chemical feed pipe 1 between the former water inlet of body 1 and first the adjustable eddy flow turbulence generator 2, and chemical feed pipe 1 one end openings are in tube cavity, and the other end is communicated with dosing pump.Distance between adjacent two adjustable eddy flow turbulence generators is identical with internal diameter of tube body, and the distance between two adjustable cyclone producers is 3 times of internal diameter of tube body, and adjacent adjustable eddy flow turbulence generator and the distance between the adjustable cyclone producer are 4 times of internal diameter of tube body.
As shown in Figure 2, adjustable eddy flow turbulence generator includes the identical a plurality of fan-shaped blades 15 of shape with the adjustable cyclone producer, and the inner arc end of each fan-shaped blade 15 is fixed with interior rotating shaft 14, the outer arc end is fixed with outer shaft 9.The interior rotating shaft 14 of each fan-shaped blade is connected ball 13 and flexibly connects with the center.The outer shaft 9 of each fan-shaped blade passes that the sidewall of body 3 is fixedly connected with corresponding turning handle 8, and outer shaft 9 and turning handle 8 vertical settings have chute 7 on the turning handle 8, and chute 7 is oblique bar shaped groove.
In the present embodiment, the fan-shaped blade of adjustable eddy flow turbulence generator is 6, and its fan-shaped angle is 60 °; The fan-shaped blade of first adjustable cyclone producer is 12, and its fan-shaped angle is 30 °; The fan-shaped blade of second adjustable cyclone producer is 8, and its fan-shaped angle is 45 °.
Correspondence position with each adjustable eddy flow turbulence generator 2 or adjustable cyclone producer 4 on the outer side wall of body 3 is provided with swiveling ring 5, each swiveling ring 5 and body 3 coaxial settings, and flexibly connect by support roller 10 with the outer side wall of body 3, can rotate around the circumference of body 3.Corresponding each turning handle 8 stationkeeping are provided with slide block 6 on the swiveling ring 5, chute 7 flexible connections on each slide block 6 and the corresponding turning handle 8.Be set with handle 11 on the swiveling ring 5, the steady brace on the handle 11 is connected with the stopper slot that is fixed on the limited block 12 of body 3 outer side walls.
In the work, rotate swiveling ring 5 by handle 11, slide block 6 on the swiveling ring 5 drives 8 motions of corresponding turning handle, the outer shaft 9 that turning handle 8 can drive fan-shaped blade rotates, each fan-shaped blade 15 of adjustable eddy flow turbulence generator and adjustable cyclone producer is rotated synchronously, fan-shaped blade with come the adjustable included angle scope of flow path direction to be ± 65 °, can regulate adjustable eddy flow turbulence generator and adjustable cyclone producer.This device can adopt manual regulation, also can adopt motorized adjustment.
In order to verify the result of use of adjustable waterpower rotational flow coagulation tube, we have carried out numerical simulation to mixing section Central Plains water and medicament blended flow field, and adopting the drug concentration field of mixing section outlet to carry out the calculating of mixedness, the analog result with original static mixer contrasts simultaneously.Mixedness is defined as follows:
Wherein n is an infinitesimal face quantity on the mixing section tail end section;
S, S
iBe respectively the mixing section exit area and the area of i infinitesimal face wherein;
V, v
iBe respectively the average axial flow velocity in mixing section outlet and the axial flow velocity of i infinitesimal face wherein;
Volumetric molar concentration for medicament on each infinitesimal face on the mixing section outlet;
In the test, the blade of three eddy flow turbulence generators is positive and negative staggered arrangement with coming the angle (angle of rotation) of flow path direction, and the angle order of magnitude is identical, and concrete angle can be regulated in test.The bore of test water factory is 410mm, and former water treatment load is 1000m3/h, and pharmaceutical quantities is 400L/h.The angle of rotation of the blade of eddy flow turbulence generator is respectively: 30 °, and 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, in the time of 65 °, carry out the blended Field Flow Numerical Simulation and calculated mixedness, the relation curve of its blade angle of rotation and mixedness is seen Fig. 3.
As shown in Figure 3, under this working condition, mixedness is along with the increase of blade angle of rotation, and beginning sharply increases, and amplification reduces after 55 °, begins to decrease after 60 °, and mixedness reaches maximum in the time of 60 °.Fig. 4 is the relation curve of angle of rotation and resistance, as can be known, and along with the increase of blade angle of rotation, the resistance fast rise of mixing section, but its absolute value increase is little, when angle of rotation is 60 °, its resistance only is 22.2Pa, in the engineering applied field should resistance almost can ignore.
Flocculation Duan Congqi inlet beginning is respectively 12 and 8 adjustable cyclone producer by two blades successively to be formed, and it is 4 times caliber that last vortex generator exports apart from the flocculation section.Test shows, behind the employing adjustable waterpower rotational flow coagulation tube, is keeping under the constant prerequisite of effluent quality, can make the water treatment capacity of water factory increase by 15～26%, and the dose that adds of the former water of unit reduces 10～24%.Simultaneously, compare with original mixing equipment (SK type static mixer), the increment of total resistance to flow of this device context actual measurement (resistance to flow that comprises mixing section and flocculation section) is no more than 40Pa, and the power input of on-the-spot water pump does not have tangible increase.
Claims (1)
1, adjustable waterpower rotational flow coagulation tube, comprise body, it is characterized in that being disposed with 3～6 adjustable eddy flow turbulence generators and 2～5 adjustable cyclone producers along water (flow) direction in the body chamber, adjustable eddy flow turbulence generator and adjustable cyclone producer all with axially vertical setting of body; The tube wall of position is set with chemical feed pipe between the former water inlet of body and first the adjustable eddy flow turbulence generator, and chemical feed pipe one end opening is in tube cavity, and the other end is communicated with dosing pump; Distance between adjacent two adjustable eddy flow turbulence generators and the distance between adjacent two adjustable cyclone producers are 1～3 times of internal diameter of tube body, and adjacent adjustable eddy flow turbulence generator and the distance between the adjustable cyclone producer are 1～5 times of internal diameter of tube body;
Described adjustable eddy flow turbulence generator comprises a plurality of fan-shaped blades that shape is identical, and described adjustable cyclone producer comprises a plurality of fan-shaped blades that shape is identical; The inner arc end of each fan-shaped blade is fixed with interior rotating shaft, the outer arc end is fixed with outer shaft; The interior rotating shaft of each fan-shaped blade is connected ball and flexibly connects with the center; The outer shaft of each fan-shaped blade passes that the sidewall of body is fixedly connected with corresponding turning handle, and outer shaft is vertical with turning handle to be provided with, and has chute on the turning handle, and described chute is oblique bar shaped groove;
The fan-shaped blade of adjustable eddy flow turbulence generator is 4～12, and its fan-shaped angle is 30 °～90 °; The fan-shaped blade of adjustable cyclone producer is 8～24, its fan-shaped angle is 15 °～45 °, wherein the fan-shaped blade quantity of first adjustable cyclone producer is greater than the fan-shaped blade quantity of the adjustable eddy flow turbulence generator that is adjacent, and the fan-shaped blade quantity of the adjustable cyclone producer of its back reduces successively;
Correspondence position with each adjustable eddy flow turbulence generator or adjustable cyclone producer on the outer side wall of body is provided with swiveling ring, each swiveling ring and the coaxial setting of body, and flexibly connect by support roller with the outer side wall of body; Corresponding each turning handle position is provided with slide block on the swiveling ring, the chute flexible connection on each slide block and the corresponding turning handle; Be set with handle on the swiveling ring, the steady brace on the handle is connected with the stopper slot that is fixed on the limited block of body outer side wall.
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|---|---|---|---|
| CN200810062575A CN100575274C (en) | 2008-06-17 | 2008-06-17 | Adjustable waterpower rotational flow coagulation tube |
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| CN200810062575A CN100575274C (en) | 2008-06-17 | 2008-06-17 | Adjustable waterpower rotational flow coagulation tube |
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| CN101293690A CN101293690A (en) | 2008-10-29 |
| CN100575274C true CN100575274C (en) | 2009-12-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102322382B (en) * | 2011-06-02 | 2013-03-27 | 杭州电子科技大学 | Draft tube based on vibrating vortex generators |
| CN113230917B (en) * | 2021-05-26 | 2022-09-09 | 北京工业大学 | Adjustable static hydraulic mixing method and measurement and control system |
| CN113149170B (en) * | 2021-05-26 | 2022-12-27 | 苏州吴林园林发展有限公司 | Be applied to sewage pretreatment of equipment in coagulating sedimentation pond |
| CN116571011A (en) * | 2023-05-29 | 2023-08-11 | 上海协微环境科技有限公司 | Dehumidification cyclone device and tail gas treatment system |
| CN117401797B (en) * | 2023-12-15 | 2024-02-20 | 江苏省特种设备安全监督检验研究院 | Boiler ash water treatment recycling device |
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