CN103848467A - High-efficiency vertical flowing type water treatment flotation tank - Google Patents
High-efficiency vertical flowing type water treatment flotation tank Download PDFInfo
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Abstract
The invention provides a high-efficiency vertical flowing type water treatment flotation tank which comprises a tank body, a first circular partition, a second circular partition, a third circular partition, a collision contact chamber, an adhesion contact chamber, a flotation separation chamber and a diversion effluent water chamber, wherein the collision contact chamber and the adhesion contact chamber are communicated through a clearance between the bottom of the first circular partition and a tank bottom, a diversion plate is arranged on the upper part of the second circular partition, the flotation separation chamber and the diversion effluent water chamber are communicated through a clearance formed by the bottom of the third circular partition and the tank bottom, dissolved gas releasers are evenly distributed at the bottoms of the collision contact chamber and the adhesion contact chamber, a raw water inlet pipe orifice is formed in the upper part of the collision contact chamber, a diversion plate is arranged on the upper part of the first circular partition, the edge of the diversion plate on the upper part of the first circular partition is higher than that of the diversion plate on the upper part of the second circular partition, and a mechanical deslagging system is arranged above the floatation separation chamber. According to the high-efficiency vertical flowing type water treatment flotation tank, the water quality change risk resistance capability can be improved and large-scale production can be facilitated.
Description
technical field
The present invention relates to a kind of vertical-flow water treatment air supporting pond.
background technology
Air supporting as one efficiently, solid-liquid separation technique fast, start from ore dressing flotation technology, it is to pass into a large amount of intensive microbubbles toward water, itself and impurity, wadding grain are adhered to mutually, form the buoyancy aid that overall proportion is less than water, and rely on buoyancy to make it float up to the water surface, thereby complete water purification technology solid, that separate.At first, this technology is mainly used in the removal that fat, oil, fiber, grease isodensity are less than the material of water, in the later stage sixties 20th century, this technique is promoted in sewage disposal and drinking water treatment, has been widely used in the processing of the trade effluents such as oil refining, papermaking, printing and dyeing, electric power, chemical industry, weaving, leather, food, machinery, light industry and city domestic sewage and Drinking Water at present.According to the mode difference that produces bubble, air-float technology is divided into electrolysis (cohesion) air supporting, aeration air supporting and air-dissolving air-float, and wherein pressurized dissolved air flotation technique is one of the most frequently used technique of water treatment.
Pressurized dissolved air flotation technique is divided into downflow system air-float technology and counter-current air floating technique at present.Downflow system air-float technology is in contact chamber, to adopt the mode of following current that former water is contacted in the same way with dissolved air water, microbubble and suspended substance move in the same way in exposure chamber and complete collision and adhesion process, due to microbubble and upwards coflow of suspended substance, the duration of contact of microbubble and suspended substance is short, cause the adhesion effect of microbubble poor, especially the in the situation that in former water, the many and flco of oil or suspended particle being loose, downflow system air-float technology is difficult to effectively remove oil and suspended particle in water, and purifying water effect is undesirable.
Counter-current air floating technique is in contact chamber, to adopt the mode of adverse current to make former water carry out reverse contact with dissolved air water, microbubble and former water countercurrent flow, contact chamber bottom water outlet, the suspended substance of decline contacts with the microbubble of rising is reverse, makes microbubble and suspended substance collision.In counter-current process, microbubble and suspended substance are realized effective collision, adhesion process does not need too large flow dynamic, but because former water flows downward, be turbulent state, flow dynamic is large, and the microbubble after collision and suspended substance can not well adhere to form stable bubble flco or adhere to and under former water counter flow action, desorption phenomenon occur afterwards, cause steeping flco and can not well complete floating sepn process, occur " race alumen ustum ' phenomenon.Counter-current air floating technique is not strong to the adaptability of raw water quality variation and surface load, along with the carrying out of operation, purifying water effect variation, often obtain better water quality by increasing reflux ratio, increase microbubble concentration or increasing the air flotation pool degree of depth, but this way very consumes energy and economic benefit is not high.
Existing air-floating apparatus sets up one-level exposure chamber, collision and attachment zone is not separated, and causes like this air supporting outlet effect bad, air flotation pool pond is deeply larger, the flco forming is easy to occur desorption phenomenon, and in microbubble and water, the adhesive efficiency of suspended particulate is not high, and purifying water effect is bad.In addition, because bubble flco is affected greatly by water impact, easily there is desorption in the diffusion of length distance, makes the water quality variation again of purification, and this has just limited the entire length that adheres to exposure chamber and air flotation separating chamber, makes flat flow type air-float pool be difficult to maximize.Large-scale air-dissolving air-float pond dissolved air release easily stops up, and the obstruction of indivedual dissolved air releases can affect overall air flotation effect, therefore seldom see the example of large-scale air-dissolving air-float operational excellence.
summary of the invention
The technical problem to be solved in the present invention is to provide a kind of vertical-flow water treatment air supporting pond, and it has improved opposing change of water quality risk ability and purifying water effect, is convenient to maximize.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
The floating pond of a kind of high-efficient vertical streaming water treatment gas, comprise pond body, Ti Neicongchi center, pond outwards arranges the first toroidal membrane in turn, the second toroidal membrane and the 3rd toroidal membrane, the first toroidal membrane surrounds collision exposure chamber, annular space between the second toroidal membrane and the first toroidal membrane forms and adheres to exposure chamber, annular space between the 3rd toroidal membrane and the second toroidal membrane forms air flotation separating chamber, annular space between pond body and the 3rd toroidal membrane forms water conservancy diversion water-supplying chamber, collision exposure chamber and adhesion exposure chamber are communicated with the gap forming at the bottom of pond by the first toroidal membrane bottom, the second toroidal membrane top is flow deflector, air flotation separating chamber and water conservancy diversion water-supplying chamber are communicated with the gap forming at the bottom of pond by the 3rd toroidal membrane bottom, the dissolved air release that bottom, collision exposure chamber and bottom, adhesion exposure chamber are all arranged, the former water inhalent siphon mouth of pipe is arranged on collision top, exposure chamber, the first toroidal membrane top is flow deflector, the edge of the first toroidal membrane top flow deflector is high compared with the edge of the second toroidal membrane top flow deflector, air flotation separating chamber top arranges mechanical dreg removing system.
Above-mentioned High-efficient Water is processed air flotation pool, the flow rate of water flow of collision exposure chamber is 15-25mm/s, the flow rate of water flow that adheres to exposure chamber is 5-15mm/s, and the first toroidal membrane bottom is 10-20mm/s with the flow rate of water flow in the gap forming at the bottom of pond, and the downward flow rate of water flow of air flotation separating chamber is 1 ~ 3mm/s.
Above-mentioned High-efficient Water is processed air flotation pool, and collision exposure chamber and the dissolved air release adhering in exposure chamber are all positioned at by the first toroidal membrane bottom and the 15-25cm place, top, gap forming at the bottom of pond.
Above-mentioned High-efficient Water is processed air flotation pool, and collision exposure chamber is connected with dissolved air water arm respectively with the dissolved air release adhering in exposure chamber, and dissolved air water arm is connected with dissolved air water house steward, and control valve and flow measurement device are all set on dissolved air water arm.
Above-mentioned High-efficient Water is processed air flotation pool, and the former water inhalent siphon mouth of pipe is not less than 1m with the vertical range of the dissolved air release that bottom, collision exposure chamber arranges, and the former water inhalent siphon mouth of pipe is not less than 30cm apart from collision exposure chamber liquid level vertical range.
Above-mentioned High-efficient Water is processed air flotation pool, adheres to dissolved air release in exposure chamber and comprises colliding uniform several of annular centered by exposure chamber.
Above-mentioned High-efficient Water is processed air flotation pool, arranges and remove sedimentary deslagging blow-down pipe at the bottom of pond at the bottom of pond.
Above-mentioned High-efficient Water is processed air flotation pool, and after the processing of water conservancy diversion water-supplying chamber, water is discharged by upflow tube, and upflow tube is provided with control valve, and former water inhalent siphon is provided with under meter and control valve.
Above-mentioned High-efficient Water is processed air flotation pool, and the angle of the first toroidal membrane top flow deflector and risers is 45-60 °.
Above-mentioned High-efficient Water is processed air flotation pool, footpath, water treatment air supporting pond is dark in being 2:1 ~ 6:1, and collision exposure chamber is called exposure chamber together with adhering to exposure chamber, and footpath, exposure chamber is dark in being 1:1 ~ 1:2, water treatment air supporting pond available depth is 1.5 ~ 2.0m, and the water treatment air supporting tank waterpower residence time is 10 ~ 15min.
Contact chamber of the present invention is divided into two-stage, is respectively collision exposure chamber and adheres to exposure chamber, collision exposure chamber and adhere to exposure chamber and is communicated with at the bottom of pond, collision exposure chamber bottom and adhere to bottom exposure chamber and all arrange dissolved air release.In collision exposure chamber, microbubble and former water countercurrent flow, complete the abundant collision of microbubble and suspended substance, the water outlet of then colliding exposure chamber enters and adheres to exposure chamber, adhering to exposure chamber, microbubble contacts with former water coflow, and the part microbubble of collision exposure chamber enters adhesion exposure chamber and increased adhesion exposure chamber microbubble concentration, the adhesion process of being convenient to complete in adhesion exposure chamber microbubble and suspended substance, forms stable bubble flocs float to air flotation separating chamber.Former water is flowed through in turn and is collided exposure chamber and adhere to exposure chamber, and the duration of contact of microbubble and suspended substance is long, has improved the adhesion effect of microbubble, can better reduce the generation of bubble flco desorption phenomenon, strengthening effluent quality.The present invention significantly improves the interaction of microbubble-suspended substance, realizes microbubble and suspended substance and fully collides and effectively adhere to, and reduces the probability of occurrence of bubble flco desorption phenomenon, has greatly improved air-float technology opposing change of water quality risk ability and purifying water effect.
In addition, the bubble flco that adheres to exposure chamber's floating spreads to surrounding, and flat flow one direction diffusion phase ratio, same diffusion length, and diffusion area improves greatly, maximizes condition is provided for water treatment air supporting pond.
brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described in more detail:
Fig. 1 is structural representation of the present invention.
In figure: 1 first toroidal membrane, 2 second toroidal membranes, 3 the 3rd toroidal membranes, 4 collision exposure chambers, 5 adhere to exposure chamber, 6 air flotation separating chambers, 7 water conservancy diversion water-supplying chamber, 8 dissolved air releases, the 9 former water inhalent siphon mouths of pipe.
Embodiment
Find by research, in air-float technology, microbubble and suspended substance adhesive bond mechanism are mainly followed collision adhesive mechanism, interaction process between microbubble and suspended substance can be decomposed into three subprocess: (1) collision process, between the two apart from being progressively contracted to the process of meeting; (2) adhere to, thickness of liquid film is thinned to and breaks between the two, finally forms the process of stable three-phase contact angle; (3) desorption, steeps separating again of flocculation zoarium, exceedes adhesion energy, just bubble, particle can separate again if shear kinetic energy (or other forms of disturbance energy).
Three bubble surface region differences that process occurs, required reactive force is also different.Collision process mainly occurs in liquid phase main flow area and the shear zone of microbubble, and Main Function power is the effect of flow dynamic, diffusion and electrical forces.Adhesion process mainly occurs in microbubble attachment zone, and Main Function power is surface force.Adhesion process does not need too large flow dynamic, prevents from steeping the generation of flco desorption phenomenon.
Based on above-mentioned result of study, as shown in Figure 1, a kind of vertical-flow water treatment air supporting pond comprises pond body, Ti Neicongchi center, pond outwards arranges the first toroidal membrane 1, the second toroidal membrane 2 and the 3rd toroidal membrane 3 in turn, the first toroidal membrane surrounds collision exposure chamber 4, annular space between the second toroidal membrane and the first toroidal membrane forms and adheres to exposure chamber 5, annular space between the 3rd toroidal membrane and the second toroidal membrane forms air flotation separating chamber 6, and the annular space between pond body and the 3rd toroidal membrane forms water conservancy diversion water-supplying chamber 7.Collision exposure chamber and adhesion exposure chamber are communicated with the gap forming at the bottom of pond by the first toroidal membrane bottom, the second toroidal membrane top is flow deflector, enter air flotation separating chamber by adhering to exposure chamber overflow, air flotation separating chamber and water conservancy diversion water-supplying chamber are communicated with the gap forming at the bottom of pond by the 3rd toroidal membrane bottom, the dissolved air release 8 that bottom, collision exposure chamber and bottom, adhesion exposure chamber are all arranged, the former water inhalent siphon mouth of pipe 9 is arranged on collision top, exposure chamber.The first toroidal membrane top is flow deflector, the edge of the first toroidal membrane top flow deflector is high compared with the edge of the second toroidal membrane top flow deflector, the scum silica frost that collision exposure chamber produces can utilize two exposure chamber's liquid level difference to adhere to exposure chamber from flowing into, and then flows into flotation separation zone.Air flotation separating chamber top arranges mechanical dreg removing system, flows to air flotation separating chamber complete solid-liquid separation through the bubble flco effectively adhering to, and the scum silica frost that floats up to liquid level is collected by slag scraper, discharges from mechanical ash pit.
Collision exposure chamber and the dissolved air release adhering in exposure chamber are all positioned at by the first toroidal membrane bottom and the 15-25cm place, top, gap forming at the bottom of pond.
Adhere to dissolved air release in exposure chamber and comprise colliding uniform several of annular centered by exposure chamber.
In order to prevent that former water water inlet flow force from rushing the broken scum silica frost that has floated up to liquid level, the former water inhalent siphon mouth of pipe is not less than 30cm apart from collision exposure chamber liquid level vertical range.
Collision exposure chamber is connected with dissolved air water arm respectively with the dissolved air release adhering in exposure chamber, and dissolved air water arm is connected with dissolved air water house steward, and valve and under meter are all set on dissolved air water arm.Valve is all set on dissolved air water arm and can realizes the flexible switching of downflow system air-float technology, counter-current air floating technique and adverse current-following current (mixed flow) formula air-float technology, and the size of control dissolved air water reflux ratio, strengthen the adaptive faculty of air flotation pool to change of water quality.
At the bottom of pond, arrange and remove sedimentary deslagging blow-down pipe at the bottom of pond.
After the processing of water conservancy diversion water-supplying chamber, discharged by upflow tube, upflow tube is provided with control valve, regulates liquid level, regulates water level scum silica frost water ratio.。
Former water inhalent siphon is provided with under meter and control valve, controls former water and enters water.
The flow rate of water flow of collision exposure chamber is 15-25mm/s, and the flow rate of water flow that adheres to exposure chamber is 5-15mm/s, and the first toroidal membrane bottom is 10-20mm/s with the flow rate of water flow in the gap forming at the bottom of pond.Collision exposure chamber turbulent state is tending towards the transformation of laminar flow regime to adhesion zone of action, compared with collision exposure chamber, adhere to exposure chamber's flow velocity slower, the valid circulation area that adheres to exposure chamber is greater than the valid circulation area that collides exposure chamber, be beneficial to like this bubble adhesion particle, reduce the generation of desorption simultaneously.
The angle of the first toroidal membrane top flow deflector and risers is 45-60 °.
Water technology of the present invention is as follows: former water is after flocculation process, first enter collision exposure chamber, in collision exposure chamber, microbubble and former water countercurrent flow, complete the abundant collision of microbubble and suspended substance, and preliminary adhesion form bubble flocs float to the liquid level that density is less than water and become scum silica frost, then overflow enters and adheres to exposure chamber's liquid level, and water quality obtains rough purification.Fail the stable flco floating and suspended substance under the effect of water impact, enter and adhere to exposure chamber, adhering to exposure chamber, microbubble contacts with former water coflow, completes effective adhesion process, and the bubble flocs float that formation density is less than water enters air flotation separating chamber, scum silica frost is collected by mechanical dreg removing system, water purification enters water conservancy diversion water-supplying chamber, and then overflow enters next stage reactor, completes dissolved air flotation process.In exposure chamber (collision exposure chamber and adhesion exposure chamber), it is the further intensive treatment after collision contact that microbubble-suspended substance adheres to contact, in raising contact effect, effectively completes the adhesion process of particle, thereby has reached the object of strengthening air supporting water outlet.
embodiment 1
Draw yellow water below taking somewhere as example, raw water turbidity is 7.52NTU, COD
mn, UV
254, TOC is respectively 4.59mg/L, 0.053,5.668mg/L, chlorophyll a is 18.13mg/L, algae is counted as pH value 7.93 ~ 8.44,10.8 ~ 11.6 DEG C of water temperatures.
It is PAFC(aluminium iron polychloride that the flocculation stage is used flocculation agent), one-level flocculation stage G value 65S-1, secondary flocculation stage G value 40S-1, stirs 10min and obtains water to be clean.
(1) former water enters collision exposure chamber after flocculation process, water inlet flow velocity is 15mm/s, microbubble and water countercurrent flow to be clean that the dissolved air release being arranged by bottom, collision exposure chamber discharges, dissolved-air pressure is 0.35Mpa, collision exposure chamber is 1:2.5 with adhering to exposure chamber's dissolved air water allocation proportion, complete the abundant collision of suspended substance in microbubble and water to be clean, bubble flocs float to the liquid level that preliminary adhesion formation density is less than water becomes scum silica frost, discharged by automatic control, water quality obtains rough purification;
(2) in water to be clean, fail the stable flco floating or suspended substance under the effect of water impact, the part being communicated with bottom, adhesion exposure chamber by collision exposure chamber enters and adheres to exposure chamber, adhering to exposure chamber, the microbubble being discharged by the dissolved air release that adheres to the setting of bottom, exposure chamber contacts with water coflow to be clean, dissolved-air pressure, consistent in the volume proportion syn-collision exposure chamber of molten gas and water, complete effective adhesion process, the bubble flocs float that formation density is less than water enters air flotation separating chamber, scum silica frost is collected by mechanical dreg removing system, water purification enters water conservancy diversion water-supplying chamber, complete scavenging process, the total dissolved air water reflux ratio of this process is 8%.
Adopt above-mentioned process for purifying water, as shown in Figure 2, data are in table 1 for the relation of PAFC dosage and pollutent turbidity removal rate.
Table 1 PAFC dosage and various pollutants removal rate relation table
| With Al 3+Meter, flocculation agent addition (mg/L) | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 |
| NTU | 4.69 | 2.7 | 0.982 | 0.356 | 0.875 | 1.19 |
| Clearance | 0.376 | 0.641 | 0.869 | 0.953 | 0.884 | 0.842 |
| COD（mg/L） | 4.03 | 3.55 | 2.83 | 2.33 | 2.32 | 2.3 |
| Clearance | 0.122 | 0.227 | 0.383 | 0.492 | 0.495 | 0.499 |
| UV 254(cm -1) | 0.04 | 0.034 | 0.028 | 0.022 | 0.021 | 0.021 |
| Clearance | 0.245 | 0.358 | 0.472 | 0.585 | 0.604 | 0.604 |
| TOC(mg/L) | 4.879 | 4.423 | 3.698 | 3.077 | 2.987 | 2.978 |
| Clearance | 0.139 | 0.220 | 0.348 | 0.457 | 0.473 | 0.475 |
| Chlorophyll a | 14.75 | 10.46 | 6.56 | 3.66 | 3.75 | 3.89 |
| Clearance | 0.186 | 0.423 | 0.638 | 0.798 | 0.793 | 0.785 |
comparative example 1
Compare with embodiment 1, just the adverse current air supporting process in collision exposure chamber is omitted, only retain the advection air supporting processing of same treatment, the height that adheres to exposure chamber is doubled, to identical water to be clean after treatment, purifying water effect is in table 2.
Table 2 PAFC dosage and pollutent turbidity removal rate relation table
| With Al 3+Meter, flocculation agent addition (mg/L) | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 |
| NTU | 4.99 | 3.53 | 2.23 | 1.53 | 1.02 | 1.45 |
| Clearance | 0.336 | 0.231 | 0.514 | 0.667 | 0.778 | 0.678 |
| COD（mg/L） | 4.2 | 3.96 | 3.56 | 3.38 | 3.19 | 3.03 |
| Clearance | 0.085 | 0.137 | 0.224 | 0.264 | 0.305 | 0.340 |
| UV 254(cm -1) | 0.044 | 0.042 | 0.038 | 0.035 | 0.032 | 0.03 |
| Clearance | 0.170 | 0.208 | 0.283 | 0.340 | 0.396 | 0.434 |
| TOC(mg/L) | 4.979 | 4.532 | 4.31 | 3.9 | 3.554 | 3.386 |
| Clearance | 0.122 | 0.200 | 0.240 | 0.312 | 0.373 | 0.403 |
| Chlorophyll a | 15.87 | 12.56 | 9.54 | 7.88 | 6.32 | 5.89 |
| Clearance | 0.125 | 0.307 | 0.474 | 0.565 | 0.651 | 0.675 |
comparative example 2
Compare with embodiment 1, just the advection air supporting process adhering in exposure chamber is omitted, only retain the adverse current air supporting processing of same treatment, the height of collision exposure chamber is doubled, to identical water to be clean after treatment, purifying water effect is in table 3.
Table 3 PAFC dosage and pollutent turbidity removal rate relation table
| With Al 3+Meter, flocculation agent addition (mg/L) | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 |
| NTU | 5.22 | 4.05 | 3.26 | 2.58 | 1.86 | 2.06 |
| Clearance | 0.306 | 0.461 | 0.566 | 0.657 | 0.753 | 0.726 |
| COD（mg/L） | 4.36 | 4.15 | 3.88 | 3.69 | 3.36 | 3.29 |
| Clearance | 0.050 | 0.096 | 0.155 | 0.196 | 0.268 | 0.283 |
| UV 254(cm -1) | 0.045 | 0.043 | 0.04 | 0.037 | 0.034 | 0.033 |
| Clearance | 0.151 | 0.189 | 0.245 | 0.302 | 0.358 | 0.377 |
| TOC(mg/L) | 5.126 | 4.854 | 4.456 | 4.156 | 3.764 | 3.534 |
| Clearance | 0.096 | 0.144 | 0.214 | 0.267 | 0.336 | 0.376 |
| Chlorophyll a | 16.37 | 13.18 | 10.32 | 9.66 | 8.53 | 7.08 |
| Clearance | 0.097 | 0.273 | 0.431 | 0.467 | 0.530 | 0.609 |
Sum up: according to the result in embodiment 1, comparative example 1, comparative example 2, discovery mixed flow air-float technology, in removal effect, is compared traditional advection, adverse current air-float technology, and outlet effect is good, and medicament PAFC is adding less, and cleaning water is high, effective.
The present invention takes full advantage of the advantage in downflow system air flotation pool and counter-current air floating pond, integrate adverse current collision and following current adhesion process, relatively existing air-float technology, extend the collision adhesion time of microbubble and suspended substance, the former glassware for drinking water of different quality is had to good treatment effect, strengthened the ability of technique reply change of water quality, can not only remove turbidity particulate matter, and there is the good algae organic matter removal ability of removing, this Technology advantage is summarized as follows:
1) collision efficiency of microbubble-suspended substance improves greatly: the collision Yuan Shui of exposure chamber flows from the top down, the microbubble that reliever produces moves from bottom to top, both rely on waterpower mixing effect to complete the abundant collision of microbubble and suspended substance, in collision there is waterpower demixing phenomenon in exposure chamber, be followed successively by from top to bottom scum layer, suspended layer and transition layer, the collision effect of suspended layer microbubble and suspended substance is best.
2) collection efficiency of particulate matter is improved greatly: under the effect of water impact, enter and adhere to exposure chamber through the water quality of collision exposure chamber's preliminary treatment, reliever produces microbubble and moves upward, under the effect of laminar flow regime flow force, complete effective adhesion of microbubble and suspended substance, exposure chamber is divided into two-stage, extend microbubble and suspended substance duration of contact, strengthened effluent quality.
3) adaptive faculty raw water quality being changed significantly strengthens: valve is all set can realizes the flexible switching of downflow system air-float technology, counter-current air floating technique and adverse current-counter-current air floating technique on dissolved air release gas manifold, strengthen the adaptive faculty of air flotation pool to change of water quality, strengthened the ability of technique reply change of water quality risk.
4) effectively reduce flocculant dosage: rely on hydraulic action to mix fully at collision exposure chamber microbubble with suspended substance, in experimentation, find in air supporting process, needn't form flco large as precipitating action, collide in exposure chamber copolymerizing and air-float phenomenon obvious simultaneously.
5) adhere to the bubble flco floating exposure chamber and spread to surrounding, and flat flow one direction diffusion phase ratio, same diffusion length, diffusion area improves greatly, maximizes condition is provided for water treatment air supporting pond.
Claims (10)
1. a vertical-flow water treatment air supporting pond, it is characterized in that: comprise pond body, Ti Neicongchi center, pond outwards arranges the first toroidal membrane in turn, the second toroidal membrane and the 3rd toroidal membrane, the first toroidal membrane surrounds collision exposure chamber, annular space between the second toroidal membrane and the first toroidal membrane forms and adheres to exposure chamber, annular space between the 3rd toroidal membrane and the second toroidal membrane forms air flotation separating chamber, annular space between pond body and the 3rd toroidal membrane forms water conservancy diversion water-supplying chamber, collision exposure chamber and adhesion exposure chamber are communicated with the gap forming at the bottom of pond by the first toroidal membrane bottom, the second toroidal membrane top is flow deflector, air flotation separating chamber and water conservancy diversion water-supplying chamber are communicated with the gap forming at the bottom of pond by the 3rd toroidal membrane bottom, the dissolved air release that bottom, collision exposure chamber and bottom, adhesion exposure chamber are all arranged, the former water inhalent siphon mouth of pipe is arranged on collision top, exposure chamber, the first toroidal membrane top is flow deflector, the edge of the first toroidal membrane top flow deflector is high compared with the edge of the second toroidal membrane top flow deflector, air flotation separating chamber top arranges mechanical dreg removing system.
2. water treatment air supporting according to claim 1 pond, it is characterized in that: the flow rate of water flow of collision exposure chamber is 15-25mm/s, the flow rate of water flow that adheres to exposure chamber is 5-15mm/s, the first toroidal membrane bottom is 10-20mm/s with the flow rate of water flow in the gap forming at the bottom of pond, and the downward flow rate of water flow of air flotation separating chamber is 1 ~ 3mm/s.
3. vertical-flow water treatment air supporting according to claim 1 pond, is characterized in that: collision exposure chamber and the dissolved air release adhering in exposure chamber are all positioned at by the first toroidal membrane bottom and the 15-25cm place, top, gap forming at the bottom of pond.
4. vertical-flow water treatment air supporting according to claim 1 pond, it is characterized in that: collision exposure chamber is connected with dissolved air water arm respectively with the dissolved air release adhering in exposure chamber, dissolved air water arm is connected with dissolved air water house steward, and control valve and flow measurement device are all set on dissolved air water arm.
5. vertical-flow water treatment air supporting according to claim 1 pond, it is characterized in that: the former water inhalent siphon mouth of pipe is not less than 1m with the vertical range of the dissolved air release that bottom, collision exposure chamber arranges, and the former water inhalent siphon mouth of pipe is not less than 30cm apart from collision exposure chamber liquid level vertical range.
6. vertical-flow water treatment air supporting according to claim 1 pond, is characterized in that: adhere to dissolved air release in exposure chamber and comprise colliding uniform several of annular centered by exposure chamber.
7. vertical-flow water treatment air supporting according to claim 1 pond, is characterized in that: at the bottom of pond, arrange and remove sedimentary deslagging blow-down pipe at the bottom of pond.
8. vertical-flow water treatment air supporting according to claim 1 pond, is characterized in that: after the processing of water conservancy diversion water-supplying chamber, water is discharged by upflow tube, and upflow tube is provided with control valve, and former water inhalent siphon is provided with under meter and control valve.
9. water treatment air supporting according to claim 1 pond, is characterized in that: the angle of the first toroidal membrane top flow deflector and risers is 45-60 °.
10. water treatment air supporting according to claim 1 pond, it is characterized in that: footpath, water treatment air supporting pond is deeply than being 2:1-6:1, collision exposure chamber is called exposure chamber together with adhering to exposure chamber, footpath, exposure chamber is dark in being 1:1-1:2, water treatment air supporting pond available depth is 1.5-2.0m, and the water treatment air supporting tank waterpower residence time is 10-15min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608673A (en) * | 2016-12-30 | 2017-05-03 | 湖南西林环保材料有限公司 | Method for reducing content of soluble impurities in waste water by using air-liquid impact mixing reaction system |
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| CN111498936A (en) * | 2020-05-29 | 2020-08-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Flotation cabinet device with multi-stage flow guide and overflow structure |
| CN113321260A (en) * | 2021-03-31 | 2021-08-31 | 华北理工大学 | Vertical flow type double-flow-path air floatation separation device |
| CN116768367A (en) * | 2023-08-14 | 2023-09-19 | 臻和慧联(浙江)环境科技有限公司 | Biological denitrification and dephosphorization system for sewage |
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| CN106608673A (en) * | 2016-12-30 | 2017-05-03 | 湖南西林环保材料有限公司 | Method for reducing content of soluble impurities in waste water by using air-liquid impact mixing reaction system |
| CN107324545A (en) * | 2017-08-18 | 2017-11-07 | 西安建筑科技大学 | A kind of method for preventing that scum silica frost is precipitated during ozone air-float |
| CN111498936A (en) * | 2020-05-29 | 2020-08-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Flotation cabinet device with multi-stage flow guide and overflow structure |
| CN113321260A (en) * | 2021-03-31 | 2021-08-31 | 华北理工大学 | Vertical flow type double-flow-path air floatation separation device |
| CN113321260B (en) * | 2021-03-31 | 2022-10-25 | 华北理工大学 | Vertical flow type double-flow Cheng Qifu separation device |
| CN116768367A (en) * | 2023-08-14 | 2023-09-19 | 臻和慧联(浙江)环境科技有限公司 | Biological denitrification and dephosphorization system for sewage |
| CN116768367B (en) * | 2023-08-14 | 2023-11-10 | 臻和慧联(浙江)环境科技有限公司 | Biological denitrification and dephosphorization system for sewage |
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