CN202705080U - Air flotation device - Google Patents

Air flotation device Download PDF

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Publication number
CN202705080U
CN202705080U CN 201220397493 CN201220397493U CN202705080U CN 202705080 U CN202705080 U CN 202705080U CN 201220397493 CN201220397493 CN 201220397493 CN 201220397493 U CN201220397493 U CN 201220397493U CN 202705080 U CN202705080 U CN 202705080U
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CN
China
Prior art keywords
micro
bubble generator
air
nano bubble
equipment
Prior art date
Application number
CN 201220397493
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Chinese (zh)
Inventor
吴迪
金强
张天柱
赵咏梅
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北京中农天陆微纳米气泡水科技有限公司
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Priority to CN 201220397493 priority Critical patent/CN202705080U/en
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Publication of CN202705080U publication Critical patent/CN202705080U/en

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Abstract

The utility model discloses an air flotation device, belonging to the field of water treatment devices. The air flotation device comprises a micro/nanometer bubble generation device, a micro/nanometer bubble generator, a gas control valve and an air flotation pond, wherein the micro/nanometer bubble generation device is provided with a water inlet pipe, an intake pipe and a water outlet pipe, the water inlet pipe is used for introducing the water, the intake pipe is connected with the gas control valve, the gas control valve is provided with an opening connected with an air source, the water outlet pipe is connected with the micro/nanometer bubble generator; the micro/nanometer bubble generator is provided with a water outlet, and the micro/nanometer bubble generator is arranged in the air flotation pond. The air flotation device is a pressurization dissolved gas type air flotation device, through the tiny bubble water generated by the micro/nanometer bubble generator, the dissolved gas efficiency is improved, and meanwhile, the generated tiny bubble has negative charge so as to have good absorption action on oil stain and particles, the air flotation effect is greatly improved, the whole device has no need to increase the additional operation cost, and in comparison with the conventional air flotation method, the air flotation device is revolutionary improvement.

Description

Airfloat equipment
Technical field
The utility model relates to water treatment and recycling economy field, relates in particular to the new and effective airfloat equipment in a kind of water technology that can be used for petroleum wastewater, kitchen waste water, oily(waste)water and other oil removal by air bubbling or particulate matter.
Background technology
Process at present oily(waste)water and adopt By Bubble-floating Method more, By Bubble-floating Method comprises following several:
(1) method of pressed dissolved-air release:
At home and abroad be most widely used, refinery nearly all adopts this method to process the oil in water emulsion in the waste water and obtains preferably treatment effect.The water outlet oleaginousness can be below 10~25mg/L.Method of pressed dissolved-air release is in the pressurization situation, air dissolves is reached state of saturation in waste water, then reduce to suddenly normal pressure, at this moment the air that is dissolved in the water has just become hypersaturated state, discharge with atomic little bubble, oil in water emulsion and suspended particle with its floating, form foam layer at the water surface on every side with regard to adhering to bubble, then remove by scraping the bubble device, waste water is purified.
(2) gas distribution By Bubble-floating Method:
Gas distribution air supporting is to utilize mechanical shear stress, and the air that is mixed in the water is ground into tiny bubble, to carry out pneumatically supported method.By the difference of pulverizing the bubble method, gas distribution air supporting is divided into again four kinds of the air-breathing air supporting of water pump water pipe, jet air float, diffused aeration air supporting and turbine air flotations etc.
(1) water pump suction pipe air amount air supporting:
This be the most original also be the simplest a kind of air-float method.The advantage of this method is that equipment is simple, and its shortcoming mainly is the restriction owing to the pump working characteristic, and the air capacity of suction can not be too much, generally is not more than 10% of suction volume, otherwise will destroy the negative pressure work of water pump suction pipe.In addition, bubble is broken complete not in water pump, and particle diameter is large, and therefore, air flotation effect is bad.This method is for the treatment of by the petroleum wastewater behind the grease removal tank, and oil removal efficiency is generally 50%~65%.
(2) jet air float:
Jet air float adopts by ejector entrained air in the waste water and carries out pneumatically supported method.The high speed waste water that is penetrated by nozzle makes suction chamber form negative pressure, and from the air suction pipe air amount, after entering the trunnion section, the gas-vapor mix body carries out fierce energy exchange, then enter diffusor (expansion section), kinetic transformation is potential energy, further compressed bubble has increased the solubleness of air in water, then enters and finishes the air supporting process in the air flotation pool.
(3) diffuser plate aeration air supporting:
This is that early stage air flotation pool adopts the most a kind of cloth gas method.Diffuser plate or the microporous pipe of pressurized air by having micropore makes air enter in the water with the form of tiny bubble, carries out the air supporting process.The advantage of this method is simple, but shortcoming is more, and wherein main is that the micropore of air-diffuser is easy to stop up, and bubble is larger, and daf efficiency is not high.Therefore this method is seldom used in recent years.
(4) turbine air flotation:
Turbine air flotation equipment is to be provided with rotary blade in the air flotation pool bottom, is filling the securing cover plate with turning vane on the top of impeller, and hole is arranged on the cover plate.When motor drives impeller high speed rotating, form negative pressure under cover plate, from the blast main air amount, waste water is entered by the aperture on the cover plate, under the stirring of impeller, air is ground into tiny bubble, and fully is mixed into the gas-vapor mix body with water, throws away outside the turning vane, turning vane reduces flow resistance, again behind the cowling panel current stabilization, vertical uplift reposefully in the body of pond is carried out air supporting.The foam that forms is constantly scraped outside the groove by scraper plate.This air flotation pool directly transplanting from mineral floating is come.
(3) electrolytic gas float glass process:
The electrolytic gas float glass process is that waste water is carried out electrolysis, at this moment produces a large amount of bubble hydrogens at negative electrode, and the diameter of bubble hydrogen is very little, and 20~100 μ m are only arranged.Suspended particle in the waste water sticks on the bubble hydrogen, with its floating, thereby has reached the purpose of purifying liquid waste.Meanwhile, the oxyhydroxide that forms in anode ionization plays a part coagulating agent, helps pollutent floating or sinking in the water.The advantage of electrolytic gas float glass process is to produce a large amount of small bubbles; When utilizing soluble anode, air supporting process and coagulation process are in conjunction with carrying out; Device construction is simple, is a kind of new purification method for effluent.But because its current consumption is larger, its large-scale promotion and application have been hindered.
The utility model content
The utility model embodiment provides a kind of airfloat equipment, can solve the present airfloat equipment higher problem of general just energy consumption of need to pressurizeing, and its energy consumption is low and oil removal efficiency is high.
As follows for addressing the above problem the technical scheme that the utility model provides:
The utility model embodiment provides a kind of airfloat equipment, and this equipment comprises:
Micro-nano bubble generator, micro-nano bubble generator, gas control valve and air flotation pool; Wherein,
Described micro-nano bubble generator is provided with water inlet pipe, inlet pipe and rising pipe, described water inlet pipe is used for introducing water inlet, connect described gas control valve on the described inlet pipe, described gas control valve is provided with the opening that is connected for source of the gas, and described rising pipe is connected with described micro-nano bubble generator;
Described micro-nano bubble generator is provided with water outlet, and micro-nano bubble generator is arranged in the described air flotation pool.
Can be found out by the above-mentioned technical scheme that provides, the airfloat equipment of the utility model embodiment is by micro-nano bubble generator, micro-nano bubble generator cooperates with air flotation pool, form a kind of pressure air-dissolving formula airfloat equipment, the micro-bubble water that utilizes the micro-nano foam producer to produce, not only improved molten gas efficient, the micro-bubble of simultaneously its generation has negative charge, greasy dirt and particle had good adsorption, greatly improved pneumatically supported effect, and whole equipment need not to increase extra working cost, and relatively traditional By Bubble-floating Method is the improvement of revolution.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The bactericidal oxygenation equipment schematic diagram that Fig. 1 provides for the utility model embodiment one;
The micro-nano bubble generator schematic diagram of the bactericidal oxygenation equipment that Fig. 2 provides for the utility model embodiment one;
The bactericidal oxygenation equipment schematic diagram that Fig. 3 provides for the utility model embodiment two;
The bactericidal oxygenation equipment operation process schema that Fig. 4 provides for the utility model embodiment;
The parts that each label is corresponding among the figure are: 1, former pond; 2, micro-nano bubble generator; 21, topping-up pump; 22, air-dissolving apparatus; 3, dissolving; 4, micro-nano bubble generator; 5, decompression take-off equipment; 6, air flotation pool; 7, gas control valve; 8, vent valve; 9, blow-off valve; 10, be connected to air supporting bypass suction culvert between former pond and the air flotation pool; 11, the water inlet pipe of micro-nano bubble generator; 12, the inlet pipe of micro-nano bubble generator; 13, the rising pipe of micro-nano bubble generator; 14, source of the gas; A, water inlet; B, water outlet.
Embodiment
Below in conjunction with specific embodiment the technical scheme in the utility model is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills belong to protection domain of the present utility model not making the every other embodiment that obtains under the creative work prerequisite.
The below is described in further detail the utility model embodiment.
Embodiment one
The utility model embodiment provides a kind of airfloat equipment, it is a kind of efficient air-floating waste-oil scavenger, can be applied to the fields such as wastewater treatment and flotation ore deposit, as shown in Figure 1, this equipment comprises: micro-nano bubble generator 2, micro-nano bubble generator 4, gas control valve 7 and air flotation pool 6(or flotation cell);
Wherein, micro-nano bubble generator is provided with water inlet pipe 11, inlet pipe 12 and rising pipe 13, water inlet pipe 11 is used for introducing water inlet, connect gas control valve 7 on the inlet pipe 12, gas control valve 7 is provided with the opening that is connected for source of the gas 14, by the flow of gas control valve 7 control introducing airs, rising pipe 13 is connected with micro-nano bubble generator 4; Micro-nano bubble generator 4 is provided with water outlet, and micro-nano bubble generator 4 is arranged in the air flotation pool 6, can be arranged on the zone of action in the air flotation pool 6.
On above-mentioned airfloat equipment basis, dissolving 3 and decompression take-off equipment 5 can also be set; Wherein, micro-nano bubble generator 4 can be arranged in the dissolving 3; Dissolving 3 is provided with rising pipe and is connected with decompression take-off equipment 5; Decompression take-off equipment 5 is connected in the air flotation pool 6.The airfloat equipment of this structure carries out water distribution by dissolving 3 and 5 cooperations of decompression take-off equipment.
Dissolving 3 in the above-mentioned airfloat equipment is airtight tank body, and is withstand voltage greater than 0.8MPa, which is provided with vent valve 8, and vent valve 8 can be arranged on the bottom of dissolving 3, and its bottom is provided with blow-off valve 9.
Decompression take-off equipment 5 adopts reducing valve or low pressure dissolved air release in the above-mentioned airfloat equipment.
As shown in Figure 2, in the above-mentioned airfloat equipment, micro-nano bubble generator 2 comprises: topping-up pump 21 and air-dissolving apparatus 22; Wherein, topping-up pump 21 is connected with air-dissolving apparatus and is connected with rising pipe 12 respectively; Water inlet pipe 11 is set on the topping-up pump 21; Inlet pipe 12 is set on the air-dissolving apparatus 22.
It is the topping-up pump of 0.2MPa~1MPa that topping-up pump 21 in the above-mentioned micro-nano bubble generator 2 can adopt lift; Air-dissolving apparatus 22 adopts the venturi principle ejectors or with the Liqiud-gas mixing device of molten airway dysfunction.
Micro-nano bubble generator 4 in aforesaid device can adopt the output bubble diameter to be distributed in the high speed rotary type gas-liquid mixed type micro-nano foam producer of 5~60 μ m.Be 200610140565.5 high speed rotary type gas-liquid mixed type micro-nano foam producer as adopting number of patent application.This micro-nano bubble generator cooperates with micro-nano bubble generator, utilize water as medium, ejector or air dissolved pump negative pressure inlet by venturi principle, inject the mixed solution after the gas-liquid mixed in the micro-nano bubble generator of ad hoc structure with certain pressure, to discharge after the cutting of gas high speed rotating, mainly the distribute bubble of 5~60 μ m of the bubble diameter of its formation is in suspended state in solution, upflow velocity<0.1m/s, such Liqiud-gas mixing device not only can make the gas-to-liquid contact interface greatly increase, thereby gas-liquid mass transfer efficient is increased greatly, and large leap ahead of micron-sized bubble residence time in solution that produces.Contain abundant oxygen in these micro-nano bubbles, reserve bank as the dissolved oxygen in the solution, when the dissolved oxygen in the solution reduces, dissolved oxygen in the bubble will replenish into, form one and can keep for a long time dissolved oxygen at the metastable gas liquid mixture of higher level, thereby guarantee the oxygenation demand to water fully.
The aquifer yield of the micro-nano bubble generator 4 in aforesaid device is 0.7~1.0m 3/ h, general aquifer yield is 1m 3/ h.The rising pipe 13 of micro-nano bubble generator 2 can be used as total rising pipe, a plurality of rising pipe arms are told in the water side of this rising pipe, the quantity of micro-nano bubble generator 4 is identical with the quantity of described rising pipe arm, and each micro-nano bubble generator 4 is connected with 13 1 rising pipe arms of rising pipe of described micro-nano bubble generator 2.In the reality, the quantity of micro-nano bubble generator can arrange according to the aquifer yield of the topping-up pump 21 of micro-nano bubble generator 2, makes topping-up pump 21 pressure of supply waters keep normally producing micro-nano foam and gets final product.If adopt a plurality of micro-nano bubble generators 4, then a plurality of micro-nano bubble generators 4 all arrange in the air flotation pool 6 or in the dissolving 3.
Air flotation pool 6 in the above-mentioned airfloat equipment or flotation cell can be structures or the equipment that any form has air supporting and flotation function, be generally and comprise the zone of action, air supporting divides the constituency, the parts such as scum silica frost disengaging zone be separated into the structure formation of main separation means with gas flotation.As adopting commonly used have flat flow, vertical-flow, pot type, ramp type air flotation pool etc.
In the above-mentioned airfloat equipment, source of the gas 14 can also be set, be connected with the opening of gas control valve 7 on the inlet pipe 12 of micro-nano bubble generator, be the airfloat equipment air feed.Source of the gas 14 can adopt following several form:
Can adopt air compressor or gas blower, also can adopt with atmosphere as source of the gas 14, the opening of gas control valve 7 directly is communicated with atmosphere, can under condition of negative pressure, directly be communicated with atmosphere, can control easily the gas flow of the inlet pipe that enters micro-nano bubble generator by gas control valve 7.
Further, on above-mentioned airfloat equipment basis, former pond can be set, thereby be connected to form a kind of airfloat equipment of self-circulation with other parts, specifically be divided into following several structure formation:
(1) on above-mentioned airfloat equipment basis former pond 1 is set;
Wherein, the water outlet in former pond 1 is connected with the water inlet pipe of micro-nano bubble generator 2.
The airfloat equipment of this structure, the water inlet of micro-nano bubble generator is from whole waste water in former pond, after passing through successively micro-nano bubble generator, micro-nano bubble generator and dissolving, generation contains the water of a large amount of micro-nano bubbles, the water outlet of dissolving enters the air flotation pool zone of action, the bubble abrupt release through behind the reducing valve, the direct draining of water outlet after the air supporting, scum silica frost is removed.
(2) former pond 1 and air supporting bypass suction culvert 10 on above-mentioned airfloat equipment basis;
Wherein, the water outlet in former pond is connected with the water inlet pipe of micro-nano bubble generator; The water outlet in former pond 1 is connected with the water-in of air flotation pool 6 through air supporting bypass suction culvert 10.
The airfloat equipment of this structure, the water inlet of micro-nano bubble generator is from the part waste water in former pond (pipeline of all the other waste water through being connected between former pond and the air flotation pool directly enters the zone of action of air flotation pool), after passing through successively micro-nano bubble generator, micro-nano bubble generator and dissolving, generation contains the water of a large amount of micro-nano bubbles, the water outlet of dissolving is through behind the reducing valve, enter the air flotation pool zone of action, the bubble abrupt release, the direct draining of water outlet after the air flotation pool air supporting, scum silica frost is removed.
(3) on above-mentioned airfloat equipment basis former pond 1 is set;
Wherein, the water outlet in former pond 1 is connected with the water-in of air flotation pool 6 through pipeline; The water outlet of air flotation pool 6 is connected with the water inlet pipe of micro-nano bubble generator.
The airfloat equipment of this structure, the water inlet of micro-nano bubble generator is from the part water outlet (10%~50%) of air flotation pool flotation area, after passing through successively micro-nano bubble generator, micro-nano bubble generator and dissolving, generation contains the water of a large amount of micro-nano bubbles, the water outlet of dissolving enters the air flotation pool zone of action, the bubble abrupt release through behind the reducing valve, the direct draining of water outlet after the air flotation pool air supporting, scum silica frost is removed.
In order to increase the hydrophobicity of suspended particle in the waste water, improve air flotation effect, can add chemical agent---flotation agent to the water inlet front end of micro-nano bubble generator, what flotation agent was commonly used has collecting agent, pore forming material, adjusting agent etc. several.
In sum, the airfloat equipment of the utility model embodiment has the following advantages:
(1) adopt the high speed rotary type gas-liquid mixed type micro-nano foam producer to cooperate with micro-nano foam generating device, can greatly increase the molten gas efficient of pressure air-dissolving formula airfloat equipment by producing a large amount of micro/nano level bubbles, thereby improve the processing efficiency of pressurized dissolved air flotation;
(2) microbubble of high speed rotary type gas-liquid mixed type micro-nano foam producer generation has electronegative characteristic, these bubbles can be mutually exclusive, thereby can not be gathered into air pocket, in addition, electro-adsorption characteristic by negative charge, can adsorb and catch grease, particulate matter etc., it is carried out effective separation.
(3) this equipment has improved the treatment effect of pressurized dissolved air flotation greatly, but reaction power and running cost do not increase.
The above; it only is the better embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.

Claims (10)

1. an airfloat equipment is characterized in that, this equipment comprises:
Micro-nano bubble generator, micro-nano bubble generator, gas control valve and air flotation pool; Wherein,
Described micro-nano bubble generator is provided with water inlet pipe, inlet pipe and rising pipe, described water inlet pipe is used for introducing water inlet, connect described gas control valve on the described inlet pipe, described gas control valve is provided with the opening that is connected for source of the gas, and described rising pipe is connected with described micro-nano bubble generator;
Described micro-nano bubble generator is provided with water outlet, and micro-nano bubble generator is arranged in the described air flotation pool.
2. airfloat equipment as claimed in claim 1 is characterized in that, also comprises: dissolving and decompression take-off equipment;
Described micro-nano bubble generator is arranged on described dissolving;
Described dissolving is provided with rising pipe and is connected with described decompression take-off equipment;
Described decompression take-off equipment is connected in the described air flotation pool.
3. airfloat equipment as claimed in claim 2 is characterized in that, described dissolving is airtight tank body, and is withstand voltage greater than 0.8MPa, which is provided with vent valve, and its bottom is provided with blow-off valve;
Described decompression take-off equipment adopts reducing valve or low pressure dissolved air release.
4. airfloat equipment as claimed in claim 1 is characterized in that, also comprises: source of the gas is connected with described gas control valve;
Perhaps, the opening of described gas control valve atmosphere direct and as source of the gas is communicated with.
5. airfloat equipment as claimed in claim 4 is characterized in that, described source of the gas adopts air compressor or gas blower or atmosphere.
6. airfloat equipment as claimed in claim 1 is characterized in that, described micro-nano bubble generator comprises:
Topping-up pump and air-dissolving apparatus; Wherein,
Described topping-up pump is connected with air-dissolving apparatus with described rising pipe and is connected;
Described water inlet pipe is set on the described topping-up pump;
Described inlet pipe is set on the described air-dissolving apparatus.
7. airfloat equipment according to claim 6 is characterized in that, it is the topping-up pump of 0.2MPa~1MPa that described topping-up pump adopts lift;
Described air-dissolving apparatus adopts the venturi principle ejector or with the Liqiud-gas mixing device of molten airway dysfunction.
8. equipment according to claim 1 is characterized in that, described micro-nano bubble generator adopts the output bubble diameter to be distributed in the high speed rotary type gas-liquid mixed type micro-nano foam producer of 5~60 μ m; The aquifer yield of described micro-nano bubble generator is 0.7~1.0m 3/ h; Described micro-nano bubble generator is a plurality of.
9. such as each described airfloat equipment of claim 1~8, it is characterized in that, also comprise: former pond,
The water outlet in described former pond is connected with the water inlet pipe of described micro-nano bubble generator;
Perhaps, also comprise: former pond and air supporting bypass suction culvert, the water outlet in described former pond is connected with the water inlet pipe of described micro-nano bubble generator; The water outlet in described former pond is connected with the water-in of described air flotation pool through air supporting bypass suction culvert.
10. such as each described airfloat equipment of claim 1~8, it is characterized in that, also comprise: former pond, the water outlet in described former pond is connected with the water-in of described air flotation pool through pipeline, and the water outlet of described air flotation pool is connected with the water inlet pipe of described micro-nano bubble generator.
CN 201220397493 2012-08-10 2012-08-10 Air flotation device CN202705080U (en)

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Application Number Priority Date Filing Date Title
CN 201220397493 CN202705080U (en) 2012-08-10 2012-08-10 Air flotation device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765773A (en) * 2012-08-10 2012-11-07 北京中农天陆微纳米气泡水科技有限公司 Air floatation device
CN103466737A (en) * 2013-09-10 2013-12-25 常熟市新晨机械厂 Floatation equipment
CN105166601A (en) * 2015-07-18 2015-12-23 常州大学 Apparatus for removing pesticide residues on surfaces of vegetables and fruits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765773A (en) * 2012-08-10 2012-11-07 北京中农天陆微纳米气泡水科技有限公司 Air floatation device
CN103466737A (en) * 2013-09-10 2013-12-25 常熟市新晨机械厂 Floatation equipment
CN105166601A (en) * 2015-07-18 2015-12-23 常州大学 Apparatus for removing pesticide residues on surfaces of vegetables and fruits

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Effective date of registration: 20170302

Address after: 100083 Beijing, a clear road, Haidian District, No. 38 Jin code building B1505

Patentee after: Beijing Zhongnong Futong Gardening Co.,Ltd.

Address before: 100083 room A, block 905-907, building No. 38, Qing Qing Road, Beijing, Haidian District, China

Patentee before: Beijing ZhongNong Tianlu Micro-nano Bubble Water S & T Co., Ltd.