CN1907880A - Pressure air-dissolving air-float system - Google Patents
Pressure air-dissolving air-float system Download PDFInfo
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- CN1907880A CN1907880A CN 200610112436 CN200610112436A CN1907880A CN 1907880 A CN1907880 A CN 1907880A CN 200610112436 CN200610112436 CN 200610112436 CN 200610112436 A CN200610112436 A CN 200610112436A CN 1907880 A CN1907880 A CN 1907880A
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Abstract
The invention discloses a pressure dissolved air flotation system, which includes an interconnected processing facility, a mixed reactor, a flotation device and a pressure dissolved air device. The process comprises adding wastewater in the mixed reactor and forming separable flocculation with the pharmaceutical added by dosing device, placing the wastewater treated by the mixed reactor in the flotation device and mixing it with dissolved air solution provided by the two dissolved air system pressure devices to make the bubble released from dissolved air solution adhere on the flocculation, and separating and discharging through the deslagging mouth of the flotation device. Through the pressure of dissolved air flotation device and the flotation device improved, it will reduce the volume of pressure dissolved gas cylinder, shorten the time required for dissolving air, prevent the plugging, and has compact structure and reasonable process.
Description
Technical field
The present invention relates to a kind of air-dissolving air-float system, more particularly, relate to a kind of pressure air-dissolving air-float system that adopts integral type air flotation device of pressure air-dissolved and slack tank formula dissolving.
Background technology
At present, all produce a large amount of sewage in the every profession and trade production process, in order to make the innoxious of sewage, select various technology in treating processes, wherein, pressure air-dissolving air-float system is having application quite widely aspect oil removing and the suspended substance, but the pressure air-dissolving air-float system majority of China all is to use huge steel reinforced concrete pool body (being called air-floating apparatus among the present invention), floor space is big, and the construction period is long, operational management inconvenience.
The principle of work of existing pressure air-dissolving air-float system is to utilize the characteristic of water different solubility under different pressures, under pressurized state, make gas force to be dissolved in the water of all or part of pending (or handling the back), increase the gas dissolving amount of water, feed then and added in the water of coagulating agent, suddenly decompression again, promptly under the normal pressure situation, discharge, dissolved gases is discharged from water, stick on the impurity wadding grain with the microbubble form, cause wadding grain global density to rise less than water, make solid-liquid separation, finally remove impurity.
Existing pressure air-dissolving air-float system includes air-floating apparatus 2, chemicals dosing plant (not shown), mixing reactor 1 and pressure air-dissolving device 3, as shown in Figure 1, at first make former water (sewage) enter mixing reactor 1,1 adds medicament (PAC, PAM) in mixing reactor, to form separable throw out; Then with treated sewage input air-floating apparatus 2, and mix with the dissolved air water that provides by pressure air-dissolving device 3, because dissolved air water is behind relief pressure, gas sticks on the impurity wadding grain with the form of micro-bubble, after the wadding grain is risen, discharge from the deslagging of air-floating apparatus 2, heavier impurity sinks to air-floating apparatus 2 bottoms, is discharged by mud discharging mouth or sediment ejection opening.
Though utilize existing pressure air-dissolving air-float system also can realize the purpose of purifying waste water, in use still have following problems:
1, the pressure air-dissolving device 3 in the existing pressure air-dissolving air-float system includes recycle pump, air compressor machine (not shown), pressure air-dissolving tank and auxiliary facility thereof, because the pressure air-dissolving tank that adopts is to improve molten gas efficient by stow filler in jar, but in operational process, packing layer often stops up, maintenance workload is very big, in actual moving process, most of dissolving has been removed inner stuffing for this reason, but the molten gas efficient of dissolving is obviously reduced.
2, because the existing molten in use gas efficient of pressure air-dissolving tank is low, so overlong time of its molten gas, make that the volume of dissolving is very huge, and existing pressure air-dissolving tank divides phase up and down, general top is the air phase, the bottom is a water, operating pressure is 0.3～0.4MPa, with this understanding, liquid level in the dissolving is in fluctuation status, in case control badly, air pressure is too high to cause being full of in the jar air or reflux pump hypertonia easily, cause being full of water in the jar, thereby influence the stability of molten gas process.
3, the Pressure-relief Device between pressure air-dissolving tank and the air-floating apparatus adopts dissolved air release in the existing pressure air-dissolving air-float system, this dissolved air release is similar to reducing valve, for enough pressure drops are provided, the general runner of reliever is narrow and complicated, stop up easily, although a lot of relievers are provided with the flushing measure, effect is all undesirable.In addition, solution gas burst size and bubble diameter size can't be regulated in the existing molten gas dispose procedure, can not react according to the change of water quality of disposing of sewage, and have influenced the effect of sewage disposal greatly.
4, the air-floating apparatus in the existing pressure air-dissolving gas system uses huge steel reinforced concrete pool body, and floor space is big, and the construction period is long, operational management inconvenience.
Summary of the invention
The object of the present invention is to provide a kind of pressure air-dissolving air-float system, utilize this pressure air-dissolving air-float system can solve in the existing pressure air-dissolving air-float system, can reduce the volume of dissolved air time and pressure air-dissolving tank because of the caused problem of pressure air-dissolving device.
Pressure air-dissolving air-float system among the present invention can effectively solve problems such as existing pressure air-dissolving air-float system is excessive because of the air-floating apparatus volume, floor space is big by the improvement to air-floating apparatus.
Pressure air-dissolving air-float system among the present invention includes chemicals dosing plant, mixing reactor, air-floating apparatus and the pressure air-dissolving device that is interconnected, sewage enters in the described mixing reactor, the medicament effect that adds via described chemicals dosing plant forms separable throw out, sewage after the described mixing reactor of process is handled enters in the described air-floating apparatus and mixes with the dissolved air water that is provided by described pressure air-dissolving device, make bubble adhesion that dissolved air water discharges on throw out, separate come-up via described air-floating apparatus, and discharge through the slag-drip opening of described air-floating apparatus, wherein:
Described mixing reactor is the tubular type mixing reactor, and described chemicals dosing plant is connected with the different steps of tubular type mixing reactor, and can add required medicament in different steps;
Described pressure air-dissolving device includes the gas-liquid two-phase air dissolved pump that is used for molten gas in advance, be used for the pressure air-dissolving tank of further molten gas and be used for the Pressure-relief Device of relief pressure, wherein pressure air-dissolving tank is the tank body of a hollow, sealing, be provided with inlet mouth, water-in, venting port, water outlet and pressure-detecting device, utilize described gas-liquid two-phase air dissolved pump and described pressure air-dissolving tank to guarantee that gas reaches oversaturated dissolved state;
Described Pressure-relief Device includes and tank connected molten gas energy dissipating flexible pipe of described pressure air-dissolving and the dissolved air release that is connected with described air-floating apparatus, will be imported in the described air-floating apparatus behind relief pressure by the dissolved air water that described pressure air-dissolving tank forms.
Described air-floating apparatus is holistic case structure, described casing top is provided with the overflow groove lid, inner by fixedly installing inlet damper formation reaction zone, rear side at described inlet damper is provided with swash plate or inclined tube, form the swash plate district, forming mud collecting area below the swash plate district, form disengaging zone and slag collecting area above described swash plate district, a side relative with reaction zone in the swash plate district forms the pool; On the wall of described casing, be provided with sewage inlet, dissolved air water inlet, water outlet, mud discharging mouth, sediment ejection opening and slag-drip opening, wherein reaction zone is communicated with the dissolved air release of tubular type mixing reactor, pressure air-dissolving device by sewage inlet, dissolved air water inlet respectively, be provided with described sediment ejection opening in the bottom of described reaction zone, be provided with described mud discharging mouth at described mud collecting area, be provided with slag-drip opening at described slag collecting area, be provided with water outlet at described exhalant region.
Described air-floating apparatus is welded by steel plate.
The material of described swash plate is a glass reinforced plastic.
Described air-floating apparatus is provided with mud discharge machine at mud collecting area, receives at described slag collecting area and is provided with slag scraper.
Described air-floating apparatus is provided with the dross dehydration device in the disengaging zone, include bracing frame and at least one filter screen, support frame as described above removably is fixed on the inwall of described air-floating apparatus, described filter screen includes screen frame and Stainless Steel Cloth, wherein Stainless Steel Cloth is fixedly connected on the screen frame, and described screen frame is fixed on the support frame as described above by web member.
Described pressure air-dissolving tank is a microscler round can.
Described pressure air-dissolving tank is provided with fluidic device in described water inlet, and portion is provided with baffle plate or the fin plate that polylith is used to increase the gas-liquid two-phase collision probability within it.
The diameter of described molten gas energy dissipating flexible pipe is 10 to 15 millimeters.
Described dissolved air release is that diameter is 40 millimeters decompression straight tube, and is interior baffled.
Pressure air-dissolving air-float system among the present invention has following advantage:
1, by the setting of gas-liquid two-phase air dissolved pump and slack tank formula pressure air-dissolving tank, makes that the dissolution rate of gas is high, guarantee that gas reaches the supersaturation dissolved state, volume and the required time of molten gas that can dwindle pressure air-dissolving tank simultaneously.
2, molten gas release system adopts energy dissipating flexible pipe and reliever two-stage to discharge, so that the bubble diameter that discharges can be regulated.
3, dissolved air release is simple straight tube, in establish decompressing baffle plate, can prevent to stop up.
4, the integral type setting by air-floating apparatus, it is reasonable to make that air-floating apparatus has a topology layout, compact construction, advantage such as technology is reasonable simultaneously owing to have and increased swash plate, thereby can shorten the sewage disposal time, has increased the processing power of cellar area.
5, by the setting of dross dehydration device, the bubble in the scum silica frost is pulled open by silk screen, reduce the water content in the scum silica frost.
Description of drawings
Fig. 1 is the process principle figure of existing pressure air-dissolving air-float technology;
Fig. 2 is the schematic diagram of tubular type mixing reactor among the present invention;
Fig. 3 is the structural representation of pressure air-dissolving tank among the present invention;
Fig. 4 is the structural representation of air-floating apparatus among the present invention;
Fig. 5 is the cross-sectional schematic of air-floating apparatus shown in Fig. 4;
Fig. 6 is the structural representation of another embodiment of air-floating apparatus among the present invention;
Fig. 7 is the part enlarged diagram of the device of dross dehydration shown in Fig. 6.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described in further detail.
Therefore the employed label of each parts in each parts of pressure air-dissolving air-float system and the existing system among the present invention is to the structure of parts with same numeral and function thereof, principle explanation no longer separately.
As shown in Figure 1, the pressure air-dissolving air-float system among the present invention includes chemicals dosing plant (not shown), tubular type mixing reactor 1, air-floating apparatus 2 and pressure air-dissolving device 3.
Chemicals dosing plant is an existing installation, therefore no longer specifies.
The principle of work of tubular type mixing reactor 1 is to adopt line-blending to combine with reacting phase, as shown in Figure 2, adds different medicaments in different steps by chemicals dosing plant, and reaches the different requirements that mix with reaction by the flow velocity of sewage in the control pipeline.Wherein mixing is by dosing coagulant (as: Tai-Ace S 150, polymerize aluminum chloride (PAC), iron trichloride, ferrous sulfate, inorganic coagulants such as polymerization iron) make the dirty foreign material in the interior sewage of reactor become unstable, the flow rate control of the interior sewage of tubular type mixing reactor this moment is at 1.2 to 1.5 metre per second (m/s)s, mixing time is 0.5 to 1.0 second, treat that dirty foreign material coagulation enters step of reaction after forming small grain in the sewage, the flow rate control of step of reaction sewage is at 0.8 to 1.0 metre per second (m/s), reaction times is 15 to 30 seconds, in step of reaction by adding coagulant aids (as: polyacrylamide (PAM)), improve the flco structure by " bridging action ", impel tiny and discrete particle becomes thick and closely knit, form separable throw out at last.Tubular type mixing reactor 1 among the present invention is to improve mixing efficiency by increase mixed organization (not shown)s such as Venturi tube and orifice plate at pipe interior, obtain the intensive mixing effect by the throttling measure and the mode of dwindling caliber simultaneously, when helping to react postpartum better throw out, because the tubular type mixing reactor is existing matured product, therefore its concrete structure is not described in detail.
Sewage after tubular type mixing reactor 1 is handled enters air-floating apparatus 2, and the dissolved air water that is provided by pressure air-dissolving device 3 simultaneously also enters in the air-floating apparatus 2.
Pressure air-dissolving device 3 includes gas-liquid two-phase air pump (not shown), slack tank formula pressure air-dissolving tank 30, Pressure-relief Device and auxiliary facility thereof, wherein:
The gas-liquid two-phase air dissolved pump is the pre-molten gas equipment of pressure air-dissolving device 3, its principle of work is that the sky G﹠W is inhaled in the pump housing together, make empty G﹠W in pump under the high speed rotating of spiral leaf thorough mixing, realize dissolution process, because the gas-liquid two-phase air pump among the present invention is directly to buy commercially available matured product, as German EDUR gas-liquid two-phase pump, so the present invention no longer is elaborated to its internal structure and principle of work.But the present invention uses the purpose of gas-liquid two-phase air pump to be earlier the preliminary predissolve of a large amount of gas to be convenient to molten tolerance and bubble diameter that follow-up pressure air-dissolving tank reaches expectation better in water.
As shown in Figure 3, pressure air-dissolving tank 30 is the elongated sealed shell of tank 37 of a hollow, be provided with inlet mouth 36, water-in 31, venting port 32, water outlet 33 and gauge port 34, on tank body 37 inwalls, be fixed with polylith baffle plate 35 and/or fin plate, be used to increase the gas-liquid two-phase collision probability, make water body and multiple reflection such as plate washer 35, fin plate and tank skin, fully contact, reach the supersaturation dissolved state with air.
Pressure air-dissolving air-float system among the present invention is by the setting of gas-liquid two-phase pump and slack tank formula pressure air-dissolving tank 30, make that the dissolved efficiency of gas is high, and guarantee that gas reaches oversaturated dissolved state, in addition, the present invention is owing to be provided with the gas-liquid two-phase pump before pressure air-dissolving tank, can carry out predissolve to water is gentle, thereby can dwindle the volume of pressure air-dissolving tank, shorten dissolved air time.
Pressure-relief Device includes molten gas disappear flexible pipe and dissolved air release, wherein molten gas energy dissipating flexible pipe generally is that diameter is 10 to 15 millimeters a flexible pipe, the length of flexible pipe is determined according to the diameter of required bubble, diameter is that the microbubble of 20～40um is a comparatively ideal condition of most of air supporting, and therefore the length of general molten gas energy dissipating flexible pipe is 1.5-3.0m.The residence time in the molten gas energy dissipating flexible pipe is generally 0.1s.End at molten gas energy dissipating flexible pipe is equipped with dissolved air release, and this dissolved air release is that outside diameter is the pipeline section of 60mm, in establish plate washer, the residence time of portion is 0.1s to dissolved air water within it, main effect is rectifying action, and here the touch opportunity of bubble reduces, and avoids bubble too also big.Dissolved air release among the present invention adopts the design of wide runner, and the runner at inner the narrowest place surpasses 8mm, and therefore the flow velocity of dissolved air water, has avoided the generation of latch up phenomenon near 20m/s herein.Dissolved air release is furnished with switching ball simultaneously, can regulate the water yield of dissolved air water, has also regulated the flow velocity by dissolved air release simultaneously, realizes the cleaning of dissolved air release inner flow passage, prevents blockage problem.
For other auxiliary facility in the pressure air-dissolving device of the present invention, as: equipment such as pipeline, water pump, air compressor pump, just can realize without any need for creative work to one skilled in the art, and all adopt currently available products, consistent with the use in the existing pressure air-dissolving device, therefore describe in detail no longer separately.
As shown in Figure 4 and Figure 5, air-floating apparatus 2 is the holistic case structure that is welded by steel plate, the top is provided with overflow groove lid 41, inside is divided into reaction zone 20, swash plate district 21, mud collecting area 22, slag collecting area 23, disengaging zone 24 and exhalant region by baffle plate, is provided with sewage inlet 25, dissolved air water inlet 26, water outlet 27, mud discharging mouth 28, sediment ejection opening 29 and slag-drip opening 40 simultaneously.Air-floating apparatus 2 forms reaction zones 20 by inlet damper 42 is set, and this inlet damper 42 and cabinet wall are the angle of 30 degree (or about).The middle part is provided with glass reinforced plastic swash plate or inclined tube 44 in casing, forms swash plate district 21, and the top of swash plate 44 is disengaging zone 24, and the bottom is provided with mud-collecting slot and mud scraper 4, forms mud collecting area 22; 24 tops, disengaging zone are provided with slag scraper 6 and slag receiving trough, form slag collecting area 23.Wherein reaction zone 20 is communicated with the dissolved air release of tubular type mixing reactor 1, pressure air-dissolving device by sewage inlet 25, dissolved air water inlet 26 respectively, simultaneously be provided with sediment ejection opening 29, be used for getting rid of the silt that the sewage of failing by overflow plate (inlet damper) 42 settles down in the bottom of this reaction zone 20; Mud collecting area 22 is provided with mud discharging mouth 28, is used to get rid of the mud that forms after swash plate district 21 separates; Slag collecting area 23 is provided with slag-drip opening 40, is used to get rid of the impurity that strikes off through slag scraper 6, and exhalant region is located at a side in 21 relative response districts 20, swash plate district.
Swash plate structure among the present invention is a demountable structure, behind each compartmented in the casing of packing into, is fixing with pressing plate, makes it stable; Premium on currency groove 45 is welded on the back plate of casing, and effluent trough 46 is welded on the top of premium on currency groove 45, and mud scraper 4 adopts bolting to be connected with casing; Slag scraper is installed on the case lid (overflow groove lid) 41, connects with bolting.
The working process of air-floating apparatus is among the present invention:
When the sewage after tubular type mixing reactor 1 is handled enters in the reaction zone 20 of air-floating apparatus 2, the micro bubble that discharges by the pressure air-dissolving reliever, fully contact with suspended substance with the oil in the water, after reaction for some time, enter disengaging zone 24, oil that proportion is little and suspended substance through the abundant absorption of micro bubble, rely on buoyancy 24 to rise to end face through the disengaging zone, when running up to certain thickness, utilize slag scraper 6 regularly to strike off, promptly blow into slag receiving trough, (slag collection system is a prior art to enter the slag collection system discharge, explanation no longer separately), heavy particle slides to bottom of device by swash plate district 21, regularly scrapes mud by mud scraper 4, is discharged by mud discharging mouth 28.Water after the processing then rises to effluent trough by premium on currency groove 45, is discharged by water outlet 27, thereby finishes the entire treatment process.It is reasonable that air-floating apparatus among the present invention has topology layout, compact construction, and advantage such as technology is reasonable simultaneously owing to have and increased swash plate, thereby can shorten the sewage disposal time, has increased the processing power of cellar area.
As shown in Figure 6, air-floating apparatus 2 among the present invention can further be provided with a dross dehydration device 5 apart from 200～300mm place, scum layer bottom below the scum layer of 24 tops, disengaging zone formation, this dross dehydration device 5 includes bracing frame and filter screen 51, wherein bracing frame includes horizontal shore 58 and vertical support frame 59, as shown in Figure 6, horizontal shore 58 and vertical support frame 59 pass through web member (as screw, bolt, nut etc.) removably be fixed on the inwall of air-floating apparatus casing, and can be with respect to cabinet wall adjustment height, so that dross dehydration device 5 is positioned at the optimum position apart from scum layer.Vertical support frame 59 is to constitute after the steel plate bar bending of 200mm by width; Horizontal shore 58 is made of the angle steel that is welded in 59 on two vertical support framves, and the last plane of angle steel should be concordant with the last plane of vertical support frame 59.
Scum silica frost area owing to air-floating apparatus 2 among the present invention is bigger, therefore filter screen 51 is divided into some, as shown in Figure 7, every filter screen 51 is made up of angle steel screen frame 52, Stainless Steel Cloth 53, Flat Steel Bar 54 and rivet 55, around the woven wire 53 with Flat Steel Bar 54 rolling-in a few, angle steel screen frame 52 and Flat Steel Bar 54 cooperate the punching back with rivet 55 Stainless Steel Cloth 53 and Flat Steel Bar 54 to be fastened on the angle steel screen frame 52.Around the angle steel screen frame 52 with horizontal shore 58 and vertical support frame 59 match-drill, with the bolt 56 anti-screw places that are welded in horizontal shore and vertical support frame, and every filter screen 51 is separately fixed on horizontal shore 58 and the vertical support frame 59 after the boring with wing nut 57.
Air-floating apparatus 2 among the present invention is by being provided with one deck 5-20 purpose Stainless Steel Cloth filter screen in appropriate position, scum layer bottom, force the slag body to pass through filter screen by the buoyancy lift of scum silica frost, bubble is pulled open by silk screen, thereby the water ratio in the reduction scum silica frost is for the subsequent disposal of scum silica frost provides advantageous conditions.
Claims (10)
1. pressure air-dissolving air-float system, include the chemicals dosing plant that is interconnected, mixing reactor (1), air-floating apparatus (2) and pressure air-dissolving device (3), sewage enters in the described mixing reactor (1), the medicament effect that adds via described chemicals dosing plant forms separable throw out, sewage after the described mixing reactor of process (1) is handled enters in the described air-floating apparatus (2) and mixes with the dissolved air water that is provided by described pressure air-dissolving device (3), make bubble adhesion that dissolved air water discharges on throw out, separate come-up via described air-floating apparatus (2), and discharge through the slag-drip opening (40) of described air-floating apparatus (2), it is characterized in that:
Described mixing reactor (1) is the tubular type mixing reactor, and described chemicals dosing plant is connected with the different steps of tubular type mixing reactor, and can add required medicament in different steps;
Described pressure air-dissolving device (3) includes the gas-liquid two-phase air dissolved pump that is used for molten gas in advance, be used for the pressure air-dissolving tank (30) of further molten gas and be used for the Pressure-relief Device of relief pressure, wherein pressure air-dissolving tank (30) is the tank body (37) of a hollow, sealing, be provided with inlet mouth (36), water-in (31), venting port (32), water outlet (33) and pressure-detecting device (34), utilize described gas-liquid two-phase air dissolved pump and described pressure air-dissolving tank (30) to guarantee that gas reaches oversaturated dissolved state;
Described Pressure-relief Device includes and tank connected molten gas energy dissipating flexible pipe of described pressure air-dissolving and the dissolved air release that is connected with described air-floating apparatus, will be imported behind relief pressure in the described air-floating apparatus (2) by the dissolved air water that described pressure air-dissolving tank forms.
2. according to the pressure air-dissolving air-float system described in the claim 1, it is characterized in that: described air-floating apparatus (2) is holistic case structure, described casing top is provided with overflow groove lid (41), inner by fixedly installing inlet damper (42) formation reaction zone (20), rear side at described inlet damper is provided with swash plate or inclined tube (44), form swash plate district (21), forming mud collecting area (22) below the swash plate district, form disengaging zone (24) and slag collecting area (23) above described swash plate district, a side relative with reaction zone in the swash plate district forms the pool; On the wall of described casing, be provided with sewage inlet (25), dissolved air water inlet (26), water outlet (27), mud discharging mouth (28), sediment ejection opening (29) and slag-drip opening (40), wherein reaction zone (20) is respectively by sewage inlet (25), dissolved air water inlet (26) and tubular type mixing reactor (1), the dissolved air release of pressure air-dissolving device (3) is communicated with, be provided with described sediment ejection opening (29) in the bottom of described reaction zone (20), be provided with described mud discharging mouth (28) at described mud collecting area (22), be provided with slag-drip opening (40) at described slag collecting area (23), be provided with water outlet (27) at described exhalant region.
3. according to the pressure air-dissolving air-float system described in the claim 2, it is characterized in that: described air-floating apparatus (2) is welded by steel plate.
4. according to the pressure air-dissolving air-float system described in the claim 2, it is characterized in that: the material of described swash plate (44) is a glass reinforced plastic.
5. according to the pressure air-dissolving air-float system described in the claim 2, it is characterized in that: described air-floating apparatus (2) is provided with mud discharge machine (4) at mud collecting area (22), receives at described slag collecting area (23) and is provided with slag scraper (6).
6. according to the pressure air-dissolving air-float system described in claim 2 or 5, it is characterized in that: (24) are provided with dross dehydration device (5) to described air-floating apparatus in the disengaging zone, include bracing frame and at least one filter screen (51), support frame as described above removably is fixed on the inwall of described air-floating apparatus (2), described filter screen (51) includes screen frame (52) and Stainless Steel Cloth (54), wherein Stainless Steel Cloth (53) is fixedly connected on the screen frame (52), and described screen frame (52) is fixed on the support frame as described above by web member.
7. according to the pressure air-dissolving air-float system described in the claim 1, it is characterized in that: described pressure air-dissolving tank (30) is a microscler round can.
8. according to the pressure air-dissolving air-float system described in claim 1 or 3, it is characterized in that: described pressure air-dissolving tank (30) locates to be provided with fluidic device at described water-in (31), and portion is provided with baffle plate or the fin plate (35) that polylith is used to increase the gas-liquid two-phase collision probability within it.
9. according to the pressure air-dissolving air-float system described in the claim 1, it is characterized in that: the diameter of described molten gas energy dissipating flexible pipe is 10 to 15 millimeters.
10. according to the pressure air-dissolving air-float system described in the claim 1, it is characterized in that: described dissolved air release is that diameter is 40 millimeters a decompression straight tube, in establish the decompression plate washer.
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| CNB2006101124365A CN100503463C (en) | 2006-08-17 | 2006-08-17 | Pressure air-dissolving air-float system |
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