CN213977175U - Cyclone air flotation separation device and system - Google Patents

Abstract

The utility model provides a whirl air supporting separator and system, include: a separation chamber having an accommodating space; the separation chamber is provided with a mixed gas-liquid inlet position, a clear water outlet position and a sludge discharge position; the cyclone chamber is arranged in the separation chamber and is positioned in the accommodating space; the cyclone chamber comprises a first communicating pipe which passes through the sludge discharge position and is communicated with a sludge recovery device; the cyclone chamber is provided with an open top end and a cyclone access position; the coil pipe is wound and stacked outside the cyclone chamber; one end of the coil pipe penetrates through the mixed gas-liquid inlet position to be communicated with the oily wastewater mixed gas-liquid device, and the other end of the coil pipe is tangentially communicated with the rotational flow inlet position; the clear water outflow position is communicated with the micro-nano bubble generator, and the other end of the micro-nano bubble generator is communicated with the oily wastewater mixing gas-liquid device. The utility model discloses an optimize whirl air supporting separator's structure, solved the low technical problem of traditional oily waste water treatment reuse rate.

Description

Cyclone air flotation separation device and system

Technical Field

The utility model relates to a water treatment technical field especially relates to a whirl air supporting separator and system.

Background

The oily wastewater refers to wastewater containing high-concentration oil organic matters, which can cause serious pollution if directly discharged, can cause eutrophication of water bodies, and can cause the damage of biological chains of aquatic plants, microorganisms, algae and the like and serious damage to the water body structure. At present, the treatment of oily wastewater mainly comprises four main methods: the method is a physical method mainly comprising a centrifugal separation method, a coarse granulation method and a membrane separation method; the second is a chemical method mainly based on a chemical oxidation method and a photochemical method; the third is a physical chemical method mainly comprising a flotation method, an adsorption method and a magnetic adsorption separation method; fourthly, a biochemical method mainly based on an activated sludge method and a biofilm method.

Currently, the air floatation method is generally adopted in the market to realize the reutilization of the oily wastewater. In the related technology, the air flotation device adopts an air compressor to introduce air, and after the air compressor and part of backflow water are pressurized through a dissolved air tank, the air-water mixed liquid is released into the air flotation tank body through a releaser so as to adhere suspended matters in water by bubbles in the air flotation tank body and enable the suspended matters to suspend on the water surface, and then scum is skimmed by a skimmer, so that the separation purpose is realized. Although the air floatation device can realize the separation of solid and solid in water, liquid and liquid, solute ions and other substances in various states, the air floatation device has the characteristics of high efficiency and high speed; however, the air flotation device is utilized to realize oil-water separation, and a flocculating agent is generally added to enhance the air flotation effect, so that a large amount of dangerous wastes such as scum and sludge are generated, environmental pollution is caused, and the operation cost is increased; even if a flocculating agent is not added when the air floatation device is used to reduce the generation of hazardous waste, the separation effect of the oily wastewater is not ideal, and the reutilization rate of the oily wastewater is low.

Therefore, the appearance of an environment-friendly cyclone air flotation separation device and system with high-efficiency separation is urgent.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a whirl air supporting separator and system to solve the technical problem that traditional oily waste water treatment reuse rate is low among the correlation technique.

The utility model provides a whirl air supporting separator, include:

a separation chamber having an accommodating space; the separation chamber is provided with a mixed gas-liquid inlet position, a clear water outlet position and a sludge discharge position;

the cyclone chamber is arranged in the separation chamber and is positioned in the accommodating space; the cyclone chamber comprises a first communicating pipe which passes through the sludge discharge position and is communicated with a sludge recovery device; the cyclone chamber is provided with an open top end and a cyclone access position; the rotational flow access position is arranged on the side wall of the rotational flow chamber;

the coil pipe is wound and stacked outside the cyclone chamber; one end of the coil pipe penetrates through the mixed gas-liquid inlet position to be communicated with the oily wastewater mixed gas-liquid device, and the other end of the coil pipe is tangentially communicated with the rotational flow inlet position;

the clear water outflow position is communicated with the micro-nano bubble generator, and the other end of the micro-nano bubble generator is communicated with the oily wastewater mixing gas-liquid device.

Optionally, the cyclone chamber further comprises a solid-liquid separation chamber and a sludge collection chamber which are connected in sequence;

the solid-liquid separation chamber is positioned at the top of the cyclone chamber, and the bottom end of the sludge collection chamber is communicated with the first communication pipe;

the rotational flow access position is arranged on the side wall of the solid-liquid separation chamber; the coil is wound and stacked outside the solid-liquid separation chamber.

Optionally, the height of the coil in the axial radial direction of the solid-liquid separation chamber is 2/3-4/5 of the height of the solid-liquid separation chamber.

Optionally, the sludge collection chamber converges in a conical shape towards the direction of the first communication pipe.

Optionally, the diameter of the micro-nano bubbles generated in the micro-nano bubble generator is less than 500 nm.

Optionally, the first communication pipe is welded to the separation chamber; and/or the presence of a gas in the gas,

the coil is welded to the separation chamber.

Optionally, the separation chamber has a recovered oil outflow position, the recovered oil outflow position is disposed at the top of the separation chamber, and the cyclonic air-flotation separation device further includes an oil level detector disposed at an upper portion of the separation chamber, and the oil level detector is configured to detect an oil level in the separation chamber.

Optionally, the cyclone air flotation separation device further comprises a pressure detection device, the pressure detection device is arranged at the upper part of the separation chamber, and the pressure detection device is used for detecting the pressure in the separation chamber; and/or the presence of a gas in the gas,

the cyclone air-flotation separation device further comprises a pressure relief device, the pressure relief device is arranged at the top of the separation chamber, and the pressure relief device is used for reducing the pressure of the separation chamber.

The utility model also provides a whirl air supporting piece-rate system, include:

the cyclone air flotation separation device is used;

the device comprises a micro-nano bubble generating mechanism, wherein one end of the micro-nano bubble generating mechanism is communicated with an oil-containing wastewater mixed gas-liquid device, and the other end of the micro-nano bubble generating mechanism is communicated with a clear water outflow position.

Optionally, the micro-nano bubble generating mechanism comprises a micro-nano bubble generator, a pump body and a valve which are connected in sequence;

the micro-nano bubble generator is arranged close to the oily wastewater mixed gas-liquid device, and the valve is arranged close to the clear water outflow end.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in the technique, through optimizing the structure of whirl air supporting device to realize the three-phase separation of oily waste water. Specifically, a separation chamber is provided to achieve oil-water separation. A cyclone chamber is arranged to realize solid-liquid separation. Meanwhile, the coil is arranged to prolong the contact time of the micro-nano bubbles and the oily wastewater, so that the accumulation of oil drops on the surfaces of the micro-nano bubbles is increased, and the effects of oil-water separation and solid-liquid separation are improved.

Drawings

Fig. 1 is a schematic structural view of a cyclone air-flotation separation device in an embodiment of the present invention;

fig. 2 is a schematic process flow diagram of a cyclone air flotation separation system in an embodiment of the present invention.

The reference numbers illustrate:

100	separation chamber	140	Recovered oil outflow position
				200	Swirl chamber	210	First communicating pipe
300	Coil pipe	220	Solid-liquid separation chamber 100
				400	Oil level detector	221	Rotational flow access position
500	Pressure detection device	230	Sludge collection chamber
				600	Pressure relief device	10	Mud residue recovery device
110	Mixed gas-liquid entering position	20	Oil-containing waste water mixed gas-liquid device
				120	Clear water outflow position	30	Oil recovery device
130	Sludge discharge position	40	Micro-nano bubble generator

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present invention more clearly understood, the following technical solutions of the present invention are further described with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2, the utility model provides a cyclone air-float separation device, include:

a separation chamber 100 having an accommodating space; the separation chamber 100 is provided with a mixed gas-liquid inlet 110, a clear water outlet 120 and a sludge discharge 130;

a cyclone chamber 200 disposed in the separation chamber 100 and located in the accommodating space; the cyclone chamber 200 comprises a first communicating pipe 210, and the first communicating pipe 210 is communicated with the sludge recycling device 10 through the sludge discharge position 130; the cyclone chamber 200 has an open top end and a cyclone access position 221; the rotational flow access position 221 is arranged on the side wall of the rotational flow chamber 200;

a coil 300, wherein the coil 300 is wound and stacked outside the cyclone chamber 200; one end of the coil 300 penetrates through the mixed gas-liquid inlet 110 to be communicated with the oily wastewater mixed gas-liquid device 20, and the other end of the coil 300 is tangentially communicated with the rotational flow inlet 221;

the clear water outflow position 120 is communicated with the micro-nano bubble generator 40, and the other end of the micro-nano bubble generator 40 is communicated with the oily wastewater mixed gas-liquid device 20.

In this embodiment, the separation chamber 100 is provided to separate oil from water in the oily wastewater. For example, but not limiting of, the separation chamber 100 is in the form of a tank. Specifically, the mixed gas-liquid inlet 110 is disposed at the lower portion of the separation chamber 100, the sludge discharge position 130 is disposed at the bottom of the separation chamber 100, and the clean water outlet 120 is disposed at the lower portion of the separation chamber 100 and is located between the mixed gas-liquid inlet 110 and the sludge discharge position 130. In order to separate solid matters and oil from water in the oily wastewater, a cyclone chamber 200 is provided. The cyclone chamber 200 is disposed inside the separation chamber 100, the first communication pipe 210 passes through the sludge discharge position 130 and is connected to the separation chamber 100, and the first communication pipe 210 communicates with the cyclone chamber 200 and the sludge recovery device 10, so as to recover the sludge accumulated in the cyclone chamber 200 to the sludge recovery device 10 for treatment and utilization. Specifically, a rotational flow access position 221 is further disposed on the sidewall of the rotational flow chamber 200. The rotational flow access position 221 is arranged at the upper part of the rotational flow chamber 200 to prolong the contact time of the mixed gas and liquid introduced into the rotational flow chamber 200. In order to improve the separation of three phases of oil, water and solid in the oily wastewater, a coil 300 is also provided. The coil 300 is wound and coiled on the outer wall of the cyclone chamber 200, one end of the coil 300 is tangentially communicated with the cyclone access position 221, and the other end of the coil 300 penetrates through the mixed gas-liquid access position 110 to be communicated with the oily wastewater mixed gas-liquid device 20 so as to tangentially introduce the mixed gas-liquid into the cyclone chamber 200. In order to prepare the mixed gas-liquid, a micro-nano bubble generator 40 is further arranged, so that the clean water flowing out of the clean water outflow position 120 is introduced into the micro-nano bubbles to form return water containing the micro-nano bubbles, the return water is mixed with the oily wastewater, and then the return water is introduced into the coil pipe 300 to perform oily wastewater separation treatment operation.

By last, the embodiment of the utility model provides an in the embodiment cyclone air supporting separator's theory of operation as follows: oily wastewater is firstly mixed with return water containing micro-nano bubbles generated by a micro-nano bubble generator 40 in an oily wastewater mixing gas-liquid device 20, then the return water enters a coil 300 arranged close to a mixed gas-liquid entering position 110, then the mixed gas-liquid enters a cyclone chamber 200 through the coiled coil 300 in a tangential direction, the contact time of the micro-nano bubbles and the oily wastewater is prolonged by the coil 300, oil-water and solid particles in the oily wastewater are separated in the cyclone chamber 200, the separated solid particles are discharged and collected from the bottom of the cyclone chamber 200, the separated oil-water flows into the separation chamber 100 from the top end of the cyclone chamber 200, and oil-water separation is realized in the separation chamber 100. It should be understood, the surface of micro-nano bubble has extremely strong surface tension, it can be with the superficial oil in the oily waste water with dissolve oil and adsorb on the surface of this micro-nano bubble, simultaneously because surface tension between the aqueous vapor is greater than micro-nano bubble internal pressure, make micro-nano bubble be the self contraction tendency, in case the micro-nano bubble internal pressure and the surface tension of shrink lose balance, the bubble breaks, gas is dissolved in aquatic completely promptly, the gathering is collected at the tiny oil globule on micro-nano bubble surface this moment and is formed big oil globule, and float thereupon and realize water oil water separating on the 100 surfaces of separating chamber.

Optionally, in this embodiment, the cyclone air flotation device is a vertical device.

Optionally, the cyclone chamber 200 further comprises a solid-liquid separation chamber 220 and a sludge collection chamber 230 which are connected in sequence;

the solid-liquid separation chamber 220 is positioned at the top of the cyclone chamber 200, and the bottom end of the sludge collection chamber 230 is communicated with the first communication pipe 210;

the rotational flow access position 221 is arranged on the side wall of the solid-liquid separation chamber 220; the coil 300 is wound around the solid-liquid separation chamber 220.

In this embodiment, a solid-liquid separation chamber 220 and a sludge collection chamber 230 are provided to separate solid and liquid of the oily wastewater in the swirling chamber 200. Specifically, the solid-liquid separation chamber 220 is disposed above the sludge collection chamber 230, and the sludge collection chamber 230 communicates with the first communication pipe 210. The top end of the solid-liquid separation chamber 220 is open to allow the separated oil and water to overflow the cyclone chamber 200 and enter the separation chamber 100 to separate the oil and water.

Optionally, the height of the coil 300 in the axial radial direction of the solid-liquid separation chamber 220 is 2/3-4/5 of the height of the solid-liquid separation chamber 220.

In this embodiment, in order to prolong the time for the micro-nano bubbles to contact with the oily wastewater, the height of the coil 300 in the axial direction of the solid-liquid separation chamber 220 is 2/3 to 4/5 of the height of the solid-liquid separation chamber 220. It will be appreciated that the cyclone access point 221 is now located at 2/3-4/5 of the height of the solid-liquid separation chamber 220 to facilitate cooperation with the coil 300.

For example, but not limited to, the height of the solid-liquid separation chamber 220 in the axial direction of the coil 300 is 2/3 the height of the solid-liquid separation chamber 220, and in this case, the water content in the recovered oil is less than 2%, which is much less than 6.8% of the water content in the recovered oil at 1/2 where the height of the solid-liquid separation chamber 220 in the axial direction of the coil 300 is equal to the height of the solid-liquid separation chamber 220.

Optionally, the sludge collection chamber 230 converges in a cone shape towards the first communication pipe 210.

In this embodiment, in order to facilitate the collection of sludge, the outer wall of the sludge collection chamber 230 is disposed in an inclined manner. Specifically, the sludge collection chamber 230 is tapered. In this way, the accumulation of sludge in the sludge collection chamber 230 can be reduced and the sludge can be directly discharged through the first communication pipe 210.

Optionally, the diameter of the micro-nano bubbles generated in the micro-nano bubble generator 40 is less than 500 nm.

In this embodiment, in order to enhance the oil-water separation effect, the diameter of the micro-nano bubbles is controlled within 500 nm. Like this with the quantity that improves the return water aquatic bubble that contains micro-nano bubble of unit volume to improve the area of contact of oily waste water and micro-nano bubble, and then improve the gathering of the oil globule on micro-nano bubble surface.

Optionally, the embodiment of the utility model provides a select micro-nano bubble cyclone's method for use, in the efficiency of three-phase separation reaches more than 80% in the swirl chamber 200, in the efficiency of oil-water separation reaches more than 90% in the separation chamber 100.

Optionally, the first communication pipe 210 is welded to the separation chamber 100; and/or the presence of a gas in the gas,

the coil 300 is welded to the separation chamber 100.

In this embodiment, in order to enhance the sealing between the first communication pipe 210 and the separation chamber 100, the first communication pipe 210 is welded at the sludge discharge position 130 of the separation chamber 100. It is to be understood that in other embodiments, the connection between the first communication pipe 210 and the separation chamber 100 may be realized by other connection means, such as adhesion, etc.

In order to enhance the sealing between the coil 300 and the separation chamber 100, the coil 300 is welded to the mixed gas-liquid inlet 110 of the separation chamber 100. It should be understood that in other embodiments, the connection between the coil 300 and the separation chamber 100 may be accomplished by other means, such as bonding, etc.

Optionally, the separation chamber 100 has a recovered oil outflow site 140, the recovered oil outflow site 140 is disposed at the top of the separation chamber 100, the cyclonic air-flotation separation apparatus further comprises an oil level detector 400, the oil level detector 400 is disposed at the upper portion of the separation chamber 100, and the oil level detector 400 is used for detecting the oil level in the separation chamber 100.

In this embodiment, the recovered oil outflow site 140 is connected to the recovered oil device 30 to collect and reuse the recovered oil. In order to realize the real-time control of the recovered oil, an electromagnetic valve is also arranged. The solenoid valve is provided on a pipe connecting the recovered oil outflow point 140 of the separation chamber 100 and the recovered oil device 30. In order to achieve collection of oil in the separation chamber 100, an oil level detector 400 is provided. When the oil level detector 400 detects that the oil level in the separation chamber 100 reaches a position where the recovered oil can be collected, the electromagnetic valve is opened to collect the oil in the separation chamber 100 into the recovered oil device 30. The water content of the recovered oil in the recovered oil device 30 is lower than 2% by detection.

Optionally, the cyclonic air flotation separation apparatus further comprises a pressure detection apparatus 500, the pressure detection apparatus 500 is disposed at an upper portion of the separation chamber 100, and the pressure detection apparatus 500 is configured to detect a pressure inside the separation chamber 100; and/or the presence of a gas in the gas,

the cyclone air-flotation separation device further comprises a pressure relief device 600, the pressure relief device 600 is arranged at the top of the separation chamber 100, and the pressure relief device 600 is used for reducing the pressure of the separation chamber 100.

In this embodiment, in order to monitor the pressure inside the separation chamber 100 in real time to improve the safety of the use of the cyclone flotation device, a pressure detection device 500 and a pressure relief device 600 are provided. The pressure detection device 500 is arranged close to the pressure relief device 600, so that when the pressure detection device 500 detects that the pressure in the separation chamber 100 is too high, the pressure relief device 600 is opened to reduce the pressure in the separation chamber 100, so as to avoid explosion, and improve the use safety of the cyclone air flotation separation device. For example, but not limited to, the pressure detecting device 500 is a pressure gauge, and the pressure relief device 600 is a pressure relief valve.

The utility model also provides a whirl air supporting piece-rate system, include: the micro-nano bubble generating mechanism and the cyclone air flotation separation device are arranged on the shell; one end of the micro-nano bubble generating mechanism is communicated with the oily wastewater mixed gas-liquid device 20, and the other end is communicated with the clear water outflow position 120. Wherein, the concrete structure of whirl air supporting separator refers to above-mentioned embodiment, because the utility model discloses whirl air supporting separation system has adopted the whole technical scheme of above-mentioned all embodiments, consequently has the beneficial effect that the technical scheme of above-mentioned embodiment brought at least, and here no longer the repeated description.

Optionally, the micro-nano bubble generating mechanism comprises a micro-nano bubble generator 40, a pump body and a valve which are connected in sequence;

the micro-nano bubble generator 40 is arranged close to the oily wastewater mixed gas-liquid device 20, and the valve is arranged close to the clear water outlet end. The micro-nano bubble generating mechanism injects micro-nano bubbles into the backflow clear water, then the backflow clear water and the oily wastewater are mixed in the oily wastewater mixed gas-liquid device 20 so as to be introduced into the coil pipe 300, and enter the cyclone chamber 200 through the tangential cyclone of the coil pipe 300, and the separation of oil water and solid particles is realized in the cyclone chamber 200, so that in the cyclone chamber 200, the solid waste is discharged and collected from the sludge discharge position 130, oil water overflows from the top of the cyclone chamber 200 and enters the separation chamber 100 to perform oil-water separation, the clear water is recovered from the bottom of the separation chamber 100, and the oil is recovered from the top of the separation chamber 100, so that the three-phase separation and the reutilization of the oily wastewater are completed.

And simultaneously, the utility model provides a whirl air supporting piece-rate system, its air supporting device who is different from in the correlation technique, it need not to add the medicine and can carry out efficient oil-water separation to get rid of COD, and entire system reaches more than 95% to the oil recovery rate of oily waste water, and the moisture content of recovered oil is less than 2%. The whole system has the advantages of compact structure, small occupied area (only 20% of the occupied area of the conventional air floatation device), high automation degree, simple operation, low energy consumption (only 10% of the energy consumption of the conventional air floatation device) and easy industrial operation.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (10)

1. A cyclonic air flotation separation apparatus, comprising:

a separation chamber having an accommodating space; the separation chamber is provided with a mixed gas-liquid inlet position, a clear water outlet position and a sludge discharge position;

the cyclone chamber is arranged in the separation chamber and is positioned in the accommodating space; the cyclone chamber comprises a first communicating pipe which passes through the sludge discharge position and is communicated with a sludge recovery device; the cyclone chamber is provided with an open top end and a cyclone access position; the rotational flow access position is arranged on the side wall of the rotational flow chamber;

the coil pipe is wound and stacked outside the cyclone chamber; one end of the coil pipe penetrates through the mixed gas-liquid inlet position to be communicated with the oily wastewater mixed gas-liquid device, and the other end of the coil pipe is tangentially communicated with the rotational flow inlet position;

the clear water outflow position is communicated with the micro-nano bubble generator, and the other end of the micro-nano bubble generator is communicated with the oily wastewater mixing gas-liquid device.

2. The cyclonic air-flotation separation device as claimed in claim 1, wherein the cyclone chamber further comprises a solid-liquid separation chamber and a sludge collection chamber connected in series;

the solid-liquid separation chamber is positioned at the top of the cyclone chamber, and the bottom end of the sludge collection chamber is communicated with the first communication pipe;

the rotational flow access position is arranged on the side wall of the solid-liquid separation chamber; the coil is wound and stacked outside the solid-liquid separation chamber.

3. The cyclonic air-flotation separation device as claimed in claim 2, wherein the height of the coil in the axial radial direction of the solid-liquid separation chamber is 2/3-4/5 of the height of the solid-liquid separation chamber.

4. The cyclonic air flotation separation device as claimed in claim 2, wherein the sludge collection chamber converges conically towards the first communication duct.

5. The cyclone air-flotation separation device as claimed in any one of claims 1 to 4, wherein the diameter of the micro-nano bubbles generated in the micro-nano bubble generator is less than 500 nm.

6. The cyclonic air flotation separation device as claimed in any one of claims 1 to 4, wherein the first communication pipe is welded to the separation chamber; and/or the presence of a gas in the gas,

the coil is welded to the separation chamber.

7. The cyclonic air flotation separation device as claimed in any one of claims 1 to 4, wherein the separation chamber has a recovered oil outflow site disposed at a top portion of the separation chamber, the cyclonic air flotation separation device further comprising an oil level detector disposed at an upper portion of the separation chamber, the oil level detector being configured to detect an oil level within the separation chamber.

8. The cyclonic air flotation separation device as claimed in any one of claims 1 to 4, wherein the cyclonic air flotation separation device further comprises a pressure detection device, the pressure detection device is arranged at the upper part of the separation chamber, and the pressure detection device is used for detecting the pressure in the separation chamber; and/or the presence of a gas in the gas,

the cyclone air-flotation separation device further comprises a pressure relief device, the pressure relief device is arranged at the top of the separation chamber, and the pressure relief device is used for reducing the pressure of the separation chamber.

9. A cyclonic air flotation separation system, comprising:

the cyclonic air flotation separation device as claimed in any one of claims 1 to 8;

the device comprises a micro-nano bubble generating mechanism, wherein one end of the micro-nano bubble generating mechanism is communicated with an oil-containing wastewater mixed gas-liquid device, and the other end of the micro-nano bubble generating mechanism is communicated with a clear water outflow position.

10. The cyclone air-flotation separation system according to claim 9, wherein the micro-nano bubble generating mechanism comprises a micro-nano bubble generator, a pump body and a valve which are connected in sequence;

the micro-nano bubble generator is arranged close to the oily wastewater mixed gas-liquid device, and the valve is arranged close to the clear water outflow end.

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