CN112250140A - Oily waste water bispin microbubble emulsion breaking device - Google Patents

Abstract

The invention relates to the technical field of sewage treatment, in particular to an oily wastewater double-rotation microbubble demulsification device which comprises a straight cylinder cavity, a rotational flow cavity and a partition cavity which are sequentially communicated from bottom to top, wherein a water inlet is arranged on the side wall of the straight cylinder cavity in the tangential direction, a sewage discharge outlet is arranged at the lower part of the straight cylinder cavity, an air inlet pipeline penetrating from the outside is arranged in the straight cylinder cavity, an air outlet is arranged on the air inlet pipeline, the rotational direction of air flow of the air outlet is the same as the rotational direction of water flow of the water inlet, a plurality of layers of cutting columns are distributed on the side wall of the partition cavity, the number of each layer of cutting columns is multiple. Oily waste water and gas carry out powerful rotary motion in the whirl intracavity in this application, and the chamber is cut apart with gaseous entering to oily waste water and gaseous at last, guides, cuts the mixture of oily waste water and gas through the cutting post, finally realizes the breakdown of emulsion of oily waste water, makes the emulsified oil turn into the oil slick, and the device can regard as the preliminary treatment facility of deoiling process unit, can promote the efficiency of follow-up deoiling process unit by a wide margin.

Description

Oily waste water bispin microbubble emulsion breaking device

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a double-rotation microbubble demulsification device for oily wastewater.

Background

The rapid development of economy brings a great deal of oily wastewater generated by oil exploitation, processing and mechanical processing, which brings many obstacles to industrial production, and the oily wastewater causes great harm to the environment and seriously threatens the life health of animals, plants and even human beings. The oily wastewater not only causes serious harm to animals, plants and environment, but also threatens the life health of human beings greatly. Oily wastewater has the characteristics of large water quantity, complex water quality, difficult biodegradation and the like, enters natural environment to cause serious pollution to plants, soil, water and the like, and is widely considered as industrial wastewater which is difficult to treat. At present, oil substances which are equivalent to an isolating membrane and float on the water surface block the dissolution of oxygen in water, so that a large number of aquatic animals and plants die due to asphyxiation, and aquatic organisms are difficult to perform photosynthesis, so that the ecological balance of a water body and the self-purification function of the water body are influenced, the water quality is deteriorated, and the ecological environment is damaged. Meanwhile, toxic and harmful substances are ingested by the fishes and the shellfish and can damage the health of human bodies through a food chain.

In addition, under the big background of strict implementation of environmental protection policies in China, the method has certain strategic significance and value on the development and utilization of water resources, the oil-containing wastewater produced by industry is a waste of water resources, the oil-containing wastewater is treated well, the water resources are effectively utilized, the discharge of sewage is reduced, and the method also has certain significance on the protection of the ecological environment.

The source, components and existing form of the oily wastewater are main factors influencing the treatment difficulty of the oily wastewater. The processing methods thereof are roughly classified into four types: 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; a physical-chemical method represented by a flotation method, an adsorption method and a magnetic adsorption separation method; and fourthly, a biochemical method including an activated sludge method and a biofilm method. At present, through comprehensive research on oily wastewater treatment, people obtain a plurality of effective methods, apply the methods to actual production and life, and continuously develop and innovate.

The oil-containing wastewater can be classified into 4 types, i.e. floating oil, dispersed oil, emulsified oil and dissolved oil, based on the diameter of oil particles. The diameter of the floating oil is the largest, generally more than 100 um, and a flaky oil layer which can be visually called as a grease film is formed, and can be separated by utilizing an oil-water density difference and an oil separation tank; the diameter of oil particles of the dispersed oil is generally between 10 and 100 micrometers, the dispersed oil is suspended in water in the form of tiny oil drops, and because the dispersed oil is unstable in property, the dispersed oil can be converted into floating oil after being generally kept stand for a period of time, and can also be converted into dissolved oil in a specific environment; emulsified oil, the diameter of oil particles is less than 10 um, the properties are stable, and the oil particles are difficult to separate; the dissolved oil, which generally has a particle size of less than 0.1 um, exists in a molecular form and is stable in state. Because the solubility of oil products in water is very small, the proportion of dissolved oil is generally below 0.5%, and the emulsified oil is kept in a stable state for a long time due to the characteristics of oil drops and the mutual repulsion action among the oil drops, the removal of the emulsified oil in the oily wastewater is a difficult point and a key point in the treatment technology.

Disclosure of Invention

The invention aims to solve the problems and the defects, and provides an oil-containing wastewater double-spiral microbubble emulsion breaking device which can form a double-spiral rising trend on oil-containing wastewater and gas in a straight cylinder cavity, wherein the oil-containing wastewater and the gas in a spiral flow cavity carry out strong circular motion, the gas gradually moves towards the center, so that the gas and the oil-containing wastewater are gradually mixed from inside to outside, the gas plays an adhesion role to play a role in emulsion breaking, finally the oil-containing wastewater and the gas enter a partition cavity, the mixture of the oil-containing wastewater and the gas is guided and cut through a cutting column to cut the gas into smaller units, the adhesion role of the gas is further enhanced, the double-spiral rising motion of the oil-containing wastewater and the gas also plays a role in emulsion breaking, finally the emulsion breaking oil of the oil-containing wastewater is converted into floating oil through the coupling of multiple functions, and the device can be used as a pretreatment facility of an oil removing process unit, the efficiency of the follow-up oil removing process unit can be greatly improved.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides an oily waste water bispin microbubble breakdown of emulsion device, includes straight section of thick bamboo chamber, whirl chamber that from the bottom up communicates in proper order and cuts apart the chamber, the water inlet has been arranged along the tangential direction to the lateral wall in straight section of thick bamboo chamber, and the lower part is provided with the drain, and the inside in straight section of thick bamboo chamber is equipped with the air inlet pipeline that penetrates from the outside, is equipped with the gas outlet on the air inlet pipeline, and the air current of gas outlet revolves to the rivers with the water inlet and revolves to the same, it has the multilayer cutting post to distribute on the lateral wall in chamber to cut apart, and the quantity of every layer of cutting.

Further, in the above oil-containing wastewater bispin microbubble demulsification device, the air inlet pipeline comprises a straight pipe section and a bent pipe section, the axis of the straight pipe section is vertically intersected with the axis of the straight cylinder cavity, two nozzles which are symmetrically distributed at 180 degrees are arranged on the straight pipe section, the nozzles are positioned on the side wall of the end part of the straight pipe section, one end of the bent pipe section is communicated with the middle part of the straight pipe section, and the other end penetrates out of the side wall of the straight cylinder cavity.

Further, in the above-mentioned oily waste water dual-rotation microbubble demulsification device, the elbow section is formed by connecting two straight pipes through an elbow.

Further, in the above-mentioned oily waste water bispin microbubble emulsion breaking device, the end of the straight tube section is fixedly connected with the inner wall of the straight cylinder cavity.

Further, in the above-mentioned oily wastewater double-rotation microbubble demulsification device, the nozzle is a tapered nozzle.

Further, in the above-mentioned oily wastewater double-rotation microbubble demulsification device, the axis of the nozzle is perpendicular to the axis of the straight pipe section.

Further, in foretell oily waste water bispin microbubble breakdown of emulsion device, cut apart the chamber and arrange individual layer top guide cutting post and double-deck top guide cutting post in turn, individual layer top guide cutting post includes the spliced pole and sets up the top head at the outer tip of spliced pole, double-deck top guide cutting post includes the spliced pole, sets up round toper arch on the spliced pole and sets up the top head at the outer tip of spliced pole, the inner fixed connection of spliced pole is at cutting apart intracavity wall, the inner of top head sets up to the frustum shape by the outer end extension of spliced pole, and the outer end sets up to the conical shape by the inside end extension of center, the size of the top head of individual layer top guide cutting post is greater than the size of the top head of double-deck top guide cutting post.

Furthermore, in the above oil-containing wastewater double-rotation microbubble demulsification device, the conical outer ends of the gyroscope heads of the single-layer gyroscope guide cutting column are circumferentially provided with inward-concave radians, and the conical inner ends of the single-layer gyroscope guide cutting column are circumferentially provided with outward-convex radians; the conical outer end circumference of double-deck top guide cutting post all is equipped with the radian to the indent, and its frustum shape inner circumference all is equipped with the radian to the evagination, and its conical bellied outer end and inner circumference are equipped with the radian to the evagination.

Further, in the above-mentioned oily wastewater double-rotation microbubble demulsification device, the position of the water inlet is lower than that of the air inlet.

Further, in the above-mentioned oily wastewater bispin microbubble demulsification device, the upper main body of the straight cylinder cavity is cylindrical, the lower part is in the shape of an inverted frustum, and the straight cylinder cavity is supported by a plurality of bases connected to the outer side of the straight cylinder cavity; the vortex cavity is frustum-shaped, and the partition cavity is cylindrical.

The oil-containing wastewater double-rotation microbubble demulsification device has the beneficial effects that:

the invention relates to a double-rotation microbubble emulsion breaking device, which arranges water inlets on the side wall of a straight cylinder cavity along the tangential direction, arranges two nozzle structures which are symmetrically distributed at 180 degrees in the straight cylinder cavity, after injecting gas, the oily wastewater can form double helix rising trend to form entrainment effect on the oily wastewater, then the oily wastewater and the gas enter a rotational flow cavity to make the oily wastewater and the gas perform powerful rotational motion inside, the gas gradually moves to the center, so that the gas and the oily wastewater are gradually mixed from inside to outside, the gas performs adhesion effect to play a role in emulsion breaking, finally the oily wastewater and the gas enter a partition cavity, the mixture of the oily wastewater and the gas is guided and cut by a cutting column to cut the gas into smaller units to further enhance the adhesion effect of the gas, and the double helix rising motion of the oily wastewater and the gas in the rotational flow cavity and the partition cavity can play a role, finally, the demulsification of the oily wastewater is realized through the coupling of the multiple functions, so that the emulsified oil is converted into the floating oil, and the device can be used as a pretreatment facility of an oil removal process unit and can greatly improve the efficiency of the subsequent oil removal process unit.

Drawings

Fig. 1 is a schematic perspective view of a double-spiral microbubble demulsification device for oily wastewater according to an embodiment of the invention.

Fig. 2 is a schematic front view of a double-rotation microbubble demulsification device for oily wastewater according to an embodiment of the invention.

Fig. 3 is a schematic sectional structure view of B-B of fig. 2.

Fig. 4 is a schematic diagram of a right-view structure of the oily wastewater double-rotation microbubble demulsification device according to the embodiment of the invention.

Fig. 5 is a schematic sectional structure view a-a of fig. 4.

Fig. 6 is one of the structural schematic diagrams of a single-layer gyro-guided cutting post according to an embodiment of the present invention.

Fig. 7 is one of the structural schematic diagrams of a double-layer gyro-guided cutting column according to an embodiment of the present invention.

Fig. 8 is a second schematic structural diagram of a single-layer gyro-guided cutting column according to an embodiment of the present invention.

Fig. 9 is a second schematic structural view of a guiding cutting column of a dual-layer gyroscope according to an embodiment of the invention.

In the figure: the gyroscope comprises a single-layer gyroscope guide cutting column 1, a connecting column 1-1, a gyroscope head 1-2, a double-layer gyroscope guide cutting column 2, a connecting column 2-1, a conical bulge 2-2, a gyroscope head 2-3, a segmentation cavity 3, a rotational flow cavity 4, a straight cylinder cavity 5, an air inlet pipeline 6, a straight pipe section 6-1, a bent pipe section 6-2, a nozzle 6-3, a water inlet 7, an air inlet 8, a sewage outlet 9, a base 10 and a water outlet 11.

Detailed Description

The invention relates to a double-rotation microbubble demulsification device for oily wastewater, which is described in more detail by specific embodiments in the following with reference to the attached drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, this embodiment discloses an oily waste water bispin microbubble breakdown of emulsion device, including the straight section of thick bamboo chamber that from the bottom up communicates in proper order, the whirl chamber and cut apart the chamber, the water inlet has been arranged along the tangential direction to the lateral wall in straight section of thick bamboo chamber, the lower part is provided with the drain, the inside in straight section of thick bamboo chamber is equipped with the air inlet pipeline that penetrates from the outside, be equipped with the gas outlet on the air inlet pipeline, the air current of gas outlet revolves to the rivers with the water inlet and revolves to the same, it has the multilayer cutting post to distribute on the lateral wall in chamber to cut apart, the quantity of every layer of cutting post is. When the device is used, firstly, oily wastewater is injected from a water inlet, then gas is injected from an air inlet pipeline, the oily wastewater can form a double helix ascending trend, the oily wastewater forms a entrainment effect, then the oily wastewater and the gas enter a vortex cavity, the oily wastewater and the gas are enabled to carry out powerful whirling motion inside, the gas gradually moves towards the center, so that the gas and the oily wastewater are gradually mixed from inside to outside, the gas plays an adhesion role to play a demulsification effect, finally, the oily wastewater and the gas enter a partition cavity, the mixture of the oily wastewater and the gas is guided and cut through a cutting column, the adhesion role of the gas is further enhanced, meanwhile, the double helix ascending motion of the oily wastewater and the gas in the vortex cavity and the partition cavity can also play a demulsification role, and finally, the demulsification of the oily wastewater is realized through the coupling of the multiple functions, the device can be used as a pretreatment facility of the oil removal process unit, the efficiency of the subsequent oil removal process unit can be greatly improved, and the treated oily wastewater is discharged from a water outlet at the upper part of the segmentation cavity.

In this embodiment, preferably, the air inlet pipeline includes a straight pipe section and a bent pipe section, the axis of the straight pipe section is perpendicular to the axis of the straight cylinder cavity, two nozzles which are 180 ° and symmetrically distributed are arranged on the straight pipe section, the two nozzles are arranged to enable rotational kinetic energy of the air flow to be larger, the nozzles are located on the side wall of the end portion of the straight pipe section to enable the air to be sprayed out from the side wall close to the straight cylinder cavity and to be more uniform in mixing with the water flow, one end of the bent pipe section is communicated with the middle of the straight pipe section, and the other end of the bent pipe section penetrates out of the. Specifically, the elbow section is formed by connecting two straight pipes through an elbow, and a connecting flange is arranged at the end part of one end of the elbow section, which penetrates out of the straight cylinder cavity, so that the elbow section is conveniently connected with an external air source.

In this embodiment, preferably, the end of the straight pipe section is fixedly connected with the inner wall of the straight cylinder cavity, so that the air inlet pipeline is conveniently fixed.

In this embodiment, the nozzle is preferably a tapered nozzle, which can play a throttling role, increase the speed of the gas during spraying, and make the rotational power of the gas stronger, and more preferably, the axis of the nozzle is perpendicular to the axis of the straight pipe section, which can make the gas enter along the tangential direction of the straight pipe cavity, so as to form a rotational flow.

In this embodiment, preferably, cut apart chamber alternate arrangement individual layer top guide cutting post and double-deck top guide cutting post, individual layer top guide cutting post includes the spliced pole and sets up the top at the outer tip of spliced pole, double-deck top guide cutting post includes the spliced pole, the round toper of setting on the spliced pole is protruding and set up the top at the outer tip of spliced pole, the intracavity wall is cut apart to the inner fixed connection of spliced pole, the inner of top is set up to the frustum shape of expanding to the outer end by the spliced pole, the outer end sets up to the conical shape of expanding to the inner end by the center, the size of the top of individual layer top guide cutting post is greater than the size of the top of double-deck top guide cutting post. The single-layer gyro guide cutting columns and the double-layer gyro guide cutting columns which are different in size are alternately arranged in the dividing cavity, so that the dividing effect in the dividing cavity is better, gas is scattered to be smaller, the adhesion effect is better exerted, and the demulsification effect is better played. In other embodiments, the optimal oil removal effect can be achieved by changing the specific form and number of the cutting columns.

In this embodiment, preferably, the conical outer ends of the gyroscope heads of the single-layer gyroscope guide cutting column are circumferentially provided with inward-concave radians, and the frustum-shaped inner ends thereof are circumferentially provided with outward-convex radians; the circular cone outer end circumference of double-deck top guide cutting post all is equipped with the radian to the indent, its frustum shape inner circumference all is equipped with the radian to the evagination, its toper bellied outer end and inner circumference are equipped with the radian to the evagination, set up top head and toper protruding surface into the arc, can be that the direction change of the fluid that flows over it is bigger, further promote the mixture of various fluids, thereby play the breakdown of emulsion effect better, adopt the circular arc transition between the toper arch of double-deck top guide cutting post and the top, can strengthen joint strength.

In this embodiment, preferably, the position of the water inlet is lower than that of the air inlet, so that the trend of double helix rising formed by the rotational flow of the gas is facilitated on the basis that the oily wastewater forms single helix rising.

In the embodiment, preferably, the upper main body of the straight cylinder cavity is cylindrical, the lower part of the straight cylinder cavity is in an inverted frustum shape, so that sewage can be conveniently discharged from a sewage discharge outlet, and the straight cylinder cavity is supported by a plurality of bases connected to the outer side of the straight cylinder cavity; the cyclone cavity is in a frustum shape, has throttling effect on fluid, is convenient for fully mixing gas and oily wastewater, and is cylindrical in a partition cavity.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above, and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention.

Claims (10)

1. The utility model provides an oily waste water bispin microbubble breakdown of emulsion device, its characterized in that includes straight section of thick bamboo chamber, the whirl chamber that from the bottom up communicates in proper order and cuts apart the chamber, the water inlet has been arranged along the tangential direction to the lateral wall in straight section of thick bamboo chamber, and the lower part is provided with the drain, and the inside in straight section of thick bamboo chamber is equipped with the air inlet pipeline that penetrates from the outside, is equipped with the gas outlet on the air inlet pipeline, and the air current of gas outlet revolves to the rivers with the water inlet to the same, it has the multilayer cutting post to distribute on the lateral wall in chamber to cut apart, and the quantity of every layer of cutting post is.

2. The oil-containing wastewater bispin microbubble demulsification device as claimed in claim 1, wherein the air inlet pipeline comprises a straight pipe section and a bent pipe section, the axis of the straight pipe section is vertically intersected with the axis of the straight cylinder cavity, two 180-degree symmetrically distributed nozzles are arranged on the straight pipe section, the nozzles are positioned on the side wall of the end part of the straight pipe section, one end of the bent pipe section is communicated with the middle part of the straight pipe section, and the other end of the bent pipe section penetrates out of the side wall of the straight cylinder cavity.

3. The apparatus for double-swirl and micro-bubble demulsification of oily wastewater as claimed in claim 2, wherein the elbow section is formed by connecting two straight pipes through an elbow.

4. The oil-containing wastewater double-rotation microbubble demulsification device as claimed in claim 2, wherein the end of the straight pipe section is fixedly connected with the inner wall of the straight cylinder cavity.

5. The apparatus for double-rotation microbubble demulsification of oily wastewater as claimed in claim 2, wherein the nozzle is a tapered nozzle.

6. The apparatus for double-swirl and micro-bubble demulsification of oily wastewater as claimed in claim 2, wherein the axis of the nozzle is perpendicular to the axis of the straight pipe section.

7. The oil-containing wastewater double-rotation microbubble demulsification device as claimed in claim 1, wherein the partition cavity is alternately provided with a single-layer gyroscope guide cutting column and a double-layer gyroscope guide cutting column, the single-layer gyroscope guide cutting column comprises a connecting column and a gyroscope head arranged at the outer end of the connecting column, the double-layer gyroscope guide cutting column comprises a connecting column, a circle of conical bulges arranged on the connecting column and a gyroscope head arranged at the outer end of the connecting column, the inner end of the connecting column is fixedly connected to the inner wall of the partition cavity, the inner end of the gyroscope head is in a frustum shape expanding from the connecting column to the outer end, the outer end of the gyroscope head is in a conical shape expanding from the center to the inner end, and the size of the gyroscope head of the single-layer gyroscope guide cutting column is larger than that of the gyroscope head of the double-.

8. The oil-containing wastewater double-rotation microbubble demulsification device as claimed in claim 7, wherein the conical outer ends of the gyroscope heads of the single-layer gyroscope guide cutting column are circumferentially provided with inward-concave radians, and the frustum-shaped inner ends of the gyroscope heads are circumferentially provided with outward-convex radians; the conical outer end circumference of double-deck top guide cutting post all is equipped with the radian to the indent, and its frustum shape inner circumference all is equipped with the radian to the evagination, and its conical bellied outer end and inner circumference are equipped with the radian to the evagination.

9. The apparatus for double-rotation microbubble demulsification of oily wastewater as claimed in claim 1, wherein the position of the water inlet is lower than the position of the air inlet.

10. The oil-containing wastewater double-rotation microbubble demulsification device as claimed in claim 1, wherein the upper main body of the straight cylinder cavity is cylindrical, the lower part of the straight cylinder cavity is inverted frustum-shaped, and the straight cylinder cavity is supported by a plurality of bases connected to the outer side of the straight cylinder cavity; the vortex cavity is frustum-shaped, and the partition cavity is cylindrical.

Images