Ozone micro-nano bubble treatment device for phenolic wastewater

Abstract

The utility model provides an ozone micro-nano bubble treatment device for phenolic wastewater, which relates to the technical field of wastewater treatment and comprises a box body and an ozone generator, an exhaust port is formed in the top of the box body; a stirring assembly and an aeration assembly are arranged in the box body; a connecting pipe is arranged on the ozone generator and connected with the aeration assembly, the aeration pump is located on the connecting pipe, and the exhaust port is connected with the connecting pipe through an ozone return pipe. The device disclosed by the utility model has the beneficial effects that the aeration pump of the device can input ozone gas generated by the ozone generator into the box body so as to oxidize and remove phenolic compounds in wastewater in the box body; the residual ozone gas after aeration can flow back into the connecting pipe through the ozone return pipe to be recycled, so that the ozone utilization rate of the device for treating the phenol-containing wastewater is improved, and the treatment cost of the phenol-containing wastewater is reduced; the connecting pipe is provided with the nano-bubble generator capable of generating nano-bubbles, so that the contact area of the ozone gas and the water body can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to an ozone micro-nano bubble treatment device for phenol-containing wastewater. Background Art

[0002] In the production process of chemical industry (such as petrochemical plant, resin plant, dye plant, pharmaceutical factory), waste water containing phenolic compounds will often be produced. Phenolic compounds are a kind of prototype poison, which can produce toxicity to all biologically active bodies. The treatment of industrial phenolic wastewater is a very important part in wastewater treatment. The treatment method of industrial phenolic wastewater has multiple such as ozone oxidation method, wet oxidation method, chemical agent method etc. Among them, ozone oxidation method is a more commonly used method. This method utilizes the oxidizing property of ozone gas molecules, and ozone gas is passed into phenolic wastewater, thereby oxidizing and removing phenolic compounds in phenolic wastewater. In the above process, some devices also set nano bubble generator on the pipeline of input ozone gas. The effect of nano bubble generator is to disperse ozone gas into ozone nano micro bubbles. Ozone micro bubble catalytic oxidation wastewater treatment technology helps to improve the gas-liquid mass transfer rate and ozone utilization efficiency of ozone. Micro bubbles have shrinkage and rupture characteristics in liquid phase at the same time, which can promote ozone decomposition to produce hydroxyl radicals, significantly improving the oxidizing ability of ozone. Existing ozone oxidation phenol-containing wastewater treatment devices usually use an aeration device to pass ozone gas through a wastewater container to treat phenol-containing wastewater in an aeration manner. Since the ozone gas passes through the phenol-containing wastewater at one time, it is difficult to make all the ozone gas react with the phenolic compounds in the wastewater, so it will produce a large amount of waste gas containing ozone gas. Therefore, it has the problem of low ozone utilization rate and high ozone waste cost. Utility Model Content

[0003] In view of this, in order to improve the ozone utilization rate of the phenol-containing wastewater ozone treatment device and reduce the cost of phenol-containing wastewater treatment, the utility model provides a phenol-containing wastewater ozone micro-nano bubble treatment device, including a box and an ozone generator;

[0004] The top of the box is provided with a wastewater inlet and an exhaust port, and the bottom side wall of the box is provided with a drain port; a stirring component and an aeration component are provided inside the box;

[0005] The aeration assembly includes an aeration pump, an aeration main pipe and a plurality of aeration branch pipes, each of the aeration branch pipes is provided with a plurality of aeration holes, the aeration main pipe and the aeration branch pipes are both located in the box, and the aeration branch pipes are both connected to the aeration main pipe;

[0006] The ozone generator is connected with a connecting pipe, and the connecting pipe passes through the side wall of the box and is connected with the aeration main pipe. The aeration pump is located on the connecting pipe. The exhaust port is connected with an ozone return pipe, and one end of the ozone return pipe is on the exhaust port, and the other end is connected to the connecting pipe.

[0007] Furthermore, a nano bubble generator is provided on the connecting pipe, and the nano bubble generator is located between the aeration pump and the aeration main pipe.

[0008] Furthermore, a solenoid valve is provided on the wastewater inlet.

[0009] Furthermore, the stirring assembly includes a stirring motor, a stirring shaft and multiple stirring blades; the stirring motor is fixed to the top of the box, the stirring shaft is located in the box, all stirring blades are fixed on the stirring shaft, and the upper end of the stirring shaft passes through the top of the box and is connected to the stirring motor through a transmission mechanism.

[0010] Furthermore, all stirring blades are arranged to be inclined relative to the horizontal plane.

[0011] Furthermore, the transmission mechanism includes a driving gear and a driven gear, the driving gear is fixed on the output shaft of the stirring motor, the driven gear is fixed on the top of the stirring shaft, and the driving gear is meshed with the driven gear.

[0012] Furthermore, the top of the box body is open, and a cover body is provided on the top of the box body. The cover body is fixed to the top of the box body by fixing screws and closes the top opening of the box body. The wastewater inlet and the exhaust port are both located on the cover body.

[0013] Furthermore, a drain pipe is provided in the drain port, one end of the drain pipe is located inside the box body, and the other end of the drain pipe passes through the box body and extends to the outside of the box body.

[0014] Furthermore, a filter assembly is provided at the end of the drain pipe located in the box body, and the filter assembly includes a metal filter and activated carbon filled in the metal filter, and the metal filter is connected to the end of the drain pipe.

[0015] Furthermore, a sewage outlet with a funnel structure is provided at the bottom of the box body, and a sewage valve is provided on the sewage outlet.

[0016] The utility model has the following beneficial effects of an ozone micro-nano bubble treatment device for phenol-containing wastewater: the treatment device comprises a box and an ozone generator; an exhaust port is provided on the top of the box, and a drain port is provided on the bottom side wall of the box; a stirring assembly and an aeration assembly are provided in the box; the aeration assembly comprises an aeration pump, an aeration main pipe and a plurality of aeration branches, a connecting pipe is provided on the ozone generator, the connecting pipe is connected to the aeration main pipe, the aeration pump is located on the connecting pipe, and the exhaust port is connected to the connecting pipe through an ozone return pipe. The aeration pump can input the ozone gas generated by the ozone generator into the box, and remove the phenolic compounds in the wastewater of the box with oxygen through the overflow of the aeration pipe, and the residual ozone gas from one aeration can flow back into the connecting pipe through the ozone return pipe and be recycled. The device can improve the ozone utilization rate during the ozone treatment of phenol-containing wastewater, reduce ozone waste, and reduce the cost of phenol-containing wastewater treatment.

[0017] The stirring blades of the stirring assembly of the treatment device are arranged obliquely relative to the horizontal plane. The rotation of the stirring blades can fully stir the wastewater in the box in the longitudinal direction, so that the water at all positions in the box can come into contact with ozone, thereby improving the treatment effect of phenol-containing wastewater.

[0018] A nano bubble generator is also provided on the connecting pipe of the treatment device, which can disperse the ozone gas into micro-nano bubbles, thereby increasing the contact area between the ozone gas and the water body and improving the treatment efficiency of phenol-containing wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an ozone micro-nano bubble treatment device for phenol-containing wastewater according to an embodiment of the utility model.

[0020] Figure 2 A schematic diagram of the internal structure of a device for treating phenol-containing wastewater with ozone micro-nano bubbles in an embodiment of the utility model.

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 It is a partial structural schematic diagram of an aeration component of an ozone micro-nano bubble treatment device for phenol-containing wastewater in an embodiment of the utility model.

[0023] Figure 5 It is a structural schematic diagram of an aeration branch pipe 52 of an ozone micro-nano bubble treatment device for phenol-containing wastewater according to an embodiment of the utility model.

[0024] In the above figure: 1-box, 11-cover, 12-wastewater inlet, 13-exhaust port, 14-drain port, 2-stirring shaft, 21-stirring blade, 22-stirring motor, 3-drain pipe, 31-filter 31, 4-ozone return pipe, 5-aeration main pipe, 51-connecting pipe, 52-aeration branch pipe, 53-aeration hole, 54-wrapping layer, 6-ozone generator, 7-aeration pump, 8-nano bubble generator. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described below in conjunction with the accompanying drawings.

[0026] Please refer to Figures 1 to 5 The utility model discloses an ozone micro-nano bubble treatment device for phenol-containing wastewater, comprising a box 1 and an ozone generator 6. The box 1 is a rectangular hollow box, the bottom of which is supported on the ground by supporting legs. The top of the box 1 is open, and a cover 11 is provided on the top of the box 1. The cover 11 is fixed to the top of the box 1 by fixing screws and closes the top opening of the box 1; a wastewater inlet 12 and an exhaust port 13 are provided on the cover 11 on the top of the box 1, and a drain port is provided on the bottom side wall of the box 1; a stirring component and an aeration component are provided in the box 1. A solenoid valve is provided on the wastewater inlet 12, which is used to introduce the phenol-containing wastewater to be treated into the box 1, and the solenoid valve on the wastewater inlet 12 is used to seal the wastewater inlet 12 after the phenol-containing wastewater is introduced into the box 1.

[0027] The aeration assembly includes an aeration pump 7, an aeration main pipe 5, and a plurality of aeration branch pipes 52. The aeration main pipe 5 and the aeration branch pipes 52 are both located in the housing 1. The ends of the aeration branch pipes 52 are both connected to the aeration main pipe 5. One end of the aeration branch pipe 52 is connected to the aeration main pipe 5 and the other end is closed. Each of the aeration branch pipes 52 is provided with a plurality of aeration holes 53. The ozone generator 6 is provided with a connecting pipe 51, which passes through the side wall of the housing 1 and is connected to the aeration main pipe 5. The aeration pump 7 is located on the connecting pipe 51. The exhaust port 13 is connected to an ozone return pipe 4, one end of which is located on the exhaust port 13 and the other end is connected to the connecting pipe 51. The connecting pipe 51 is provided with a nano bubble generator 8, which is connected between the aeration pump 7 and the aeration main pipe 5. The ozone generator 6 is used to continuously generate ozone gas, and the aeration pump 7 is used to input the ozone gas generated by the ozone generator 6 into the aeration main pipe 5. The ozone gas in the aeration main pipe 5 overflows from the aeration holes on the aeration branch pipe 52, thereby oxidizing and removing the phenolic substances in the wastewater. The nano bubble generator 8 is used to disperse the ozone gas into nanometer-scale tiny bubbles, which overflow from the aeration holes, and can increase the contact area between the ozone gas and the water body, thereby improving the wastewater treatment efficiency. The ozone return pipe 4 is used to re-introduce the remaining ozone from the aeration at the top of the box 1 into the connecting pipe, so that the remaining ozone gas from the aeration can be recycled. The ozone generator 6 and the nano bubble generator 8 are both prior art, and the working principles of their structures are not introduced in detail here.

[0028] The stirring assembly includes a stirring motor 22, a stirring shaft 2 and a plurality of stirring blades 21; the stirring motor 22 is fixed to the top of the housing 1, the stirring shaft 2 is located in the housing 1, all the stirring blades 21 are fixed to the stirring shaft 2, and the upper end of the stirring shaft 2 passes through the top of the housing 1 and is connected to the stirring motor 22 through a transmission mechanism. All the stirring blades 21 are arranged obliquely relative to the horizontal plane. Preferably, the transmission mechanism includes a driving gear and a driven gear, the driving gear is fixed to the output shaft of the stirring motor 22, the driven gear is fixed to the top of the stirring shaft 2, and the driving gear is meshed with the driven gear. The stirring motor 22 is used to drive the stirring shaft 2 and the stirring blades 21 to rotate, thereby stirring the wastewater in the housing 1 and improving the wastewater treatment efficiency. The stirring blades 21 are arranged obliquely relative to the horizontal plane so that the wastewater in the housing 1 can circulate in the longitudinal direction, so that the water body located below the aeration branch pipe 52 can also be fully contacted with the ozone bubbles.

[0029] Preferably, a drain pipe 3 is provided in the drain port, one end of the drain pipe 3 is located in the box body 1, and the other end passes through the box body 1 and extends to the outside of the box body 1. A filter assembly is provided at the end of the drain pipe 3 located in the box body 1, and the filter assembly includes a metal filter and activated carbon filled in the metal filter, and the metal filter is connected to the end of the drain pipe 3.

[0030] Preferably, a drain outlet 14 with a funnel structure is further provided at the bottom of the box body 1, and a drain valve is further provided at the bottom of the drain outlet 14. The drain valve is opened regularly to discharge solid impurities carried in the wastewater.

[0031] Preferably, each aeration branch pipe is further provided with a wrapping layer 54 made of a porous material such as fiber or foam. The wrapping layer 54 is used to disperse ozone bubbles overflowing from the aeration holes 53, expand the aeration range of the aeration branch pipe 52, and improve the wastewater treatment efficiency.

[0032] The working process of the ozone micro-nano bubble treatment device for phenol-containing wastewater of the utility model is as follows: the electromagnetic valve on the wastewater inlet 12 is opened to introduce the phenol-containing wastewater to be treated into the box body 1, and the electromagnetic valve is closed; the ozone generator 6, the aeration pump 7 and the stirring motor 22 are started, the ozone generator 6 generates ozone and enters into the connecting pipe 51, the aeration pump 7 inputs the ozone of the connecting pipe 51 into the aeration main pipe 5 and the aeration branch pipe 52 through the connecting pipe 51, and the nano bubble generator 8 disperses the ozone gas into nanometer-scale tiny ozone bubbles, the ozone bubbles overflow from the aeration holes 53 on the aeration branch pipe 52 and fully contact with the wastewater in the box body 1, and some ozone gas molecules in the ozone bubbles remove phenolic compounds in the wastewater through their oxidation; the rest of the ozone gas is dispersed into nanometer-scale tiny ozone bubbles, and ... gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone gas molecules in the ozone bubbles are dispersed into nanometer-scale tiny ozone bubbles, and the ozone The ozone moves to the top of the internal cavity of the housing 1, flows into the reconnecting pipe 51 through the exhaust port and the ozone reflux pipe, and re-enters the housing 1 together with the newly generated ozone gas molecules of the ozone generator 6 to oxidize and remove the phenolic compounds in the wastewater (in this process, since the ozone generator continuously generates ozone gas, the housing 1 maintains a slightly positive pressure state) until the phenolic compounds in the wastewater are completely removed; in the above process, the stirring blades 21 of the stirring assembly fully stir the wastewater in the housing 1, so that the water at all positions in the housing 1 (especially the water below the aeration branch pipe 52) can contact with the ozone, thereby improving the efficiency and effect of the phenolic wastewater; after the phenolic compounds in the wastewater are completely removed, the wastewater is discharged through the drain pipe 3, thereby completing the treatment process of the phenolic wastewater.

[0033] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0034] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A phenol-containing wastewater ozone micro-nano bubble treatment device, characterized in that: Including box and ozone generator; The top of the box is provided with a wastewater inlet and an exhaust port, and the bottom of the box is provided with a drain port; a stirring component and an aeration component are provided inside the box; The aeration assembly includes an aeration pump, an aeration main pipe and a plurality of aeration branch pipes, each of the aeration branch pipes is provided with a plurality of aeration holes, and the aeration branch pipes are all connected to the aeration main pipe; The ozone generator is connected with a connecting pipe, and the connecting pipe passes through the side wall of the box and is connected with the aeration main pipe. The aeration pump is located on the connecting pipe. The exhaust port is connected with an ozone return pipe, and one end of the ozone return pipe is on the exhaust port, and the other end is connected to the connecting pipe.

2. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 1, characterized in that: The connecting pipe is provided with a nano bubble generator, and the nano bubble generator is located between the aeration pump and the aeration main pipe.

3. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 1, characterized in that: A solenoid valve is arranged on the wastewater inlet.

4. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 1, characterized in that: The stirring assembly includes a stirring motor, a stirring shaft and a plurality of stirring blades; the stirring motor is fixed to the top of the box, the stirring shaft is located in the box, all the stirring blades are fixed on the stirring shaft, and the upper end of the stirring shaft passes through the top of the box and is connected to the stirring motor through a transmission mechanism.

5. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 4, characterized in that: All stirring blades are arranged inclined relative to the horizontal plane.

6. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 4, characterized in that: The transmission mechanism comprises a driving gear and a driven gear, wherein the driving gear is fixed on the output shaft of the stirring motor, and the driven gear is fixed on the top of the stirring shaft, and the driving gear is meshed with the driven gear.

7. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 1, characterized in that: The top of the box body is open, and a cover body is arranged on the top of the box body. The cover body is fixed to the top of the box body by fixing screws and closes the top opening of the box body. The wastewater inlet and the exhaust port are both located on the cover body.

8. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 1, characterized in that: A drainage pipe is arranged in the drainage port, one end of the drainage pipe is located in the box body, and the other end of the drainage pipe passes through the box body and extends to the outside of the box body.

9. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 8, characterized in that: The end of the drain pipe located in the box body is provided with a filter assembly, the filter assembly includes a metal filter and activated carbon filled in the metal filter, and the metal filter is connected to the end of the drain pipe.

10. The ozone micro-nano bubble treatment device for phenol-containing wastewater according to claim 1, characterized in that: The bottom of the box body is also provided with a sewage outlet with a funnel structure, and the sewage outlet is also provided with a sewage valve.

Images