Reactor for treating cabin washing water through ultrasonic-assisted catalysis of PMS

Abstract

The utility model discloses an ultrasound-assisted catalysis PMS treatment tank washing water reactor, which comprises a bioreactor and a plurality of ultrasonic probes used for carrying out ultrasound treatment on the inside of the bioreactor, the bioreactor comprises a reaction cavity and an aeration disc arranged in the reaction cavity, a water outlet is formed in the upper part of the reaction cavity, and a water inlet is formed in the lower part of the reaction cavity. A water inlet is formed in the lower part of the reaction cavity; a water diversion plate is fixedly arranged in the reaction cavity above the water inlet; the aeration pump is positioned outside the reaction cavity and is connected with the aeration disc through a pipeline; a water inlet weir is mounted on the water inlet; the ultrasonic probes are arranged on the side face and the top face of the reaction cavity respectively, all the ultrasonic probes located on the side face are divided into multiple groups, and each group of ultrasonic probes are arranged in the vertical direction of the reaction cavity. According to the utility model, the ultrasonic probes are distributed vertically and horizontally, and single-plane fluctuation is changed into double-plane fluctuation, so that the ultrasonic auxiliary capability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and specifically relates to an ultrasound-assisted catalytic PMS reactor for treating tank washing water. Background Art

[0002] PMS oxidation technology is one of the most widely used new advanced oxidation technologies. The sulfate radicals produced have high redox potentials, longer lifespans than hydroxyl radicals, and no secondary pollution. After catalyst activation, PMS retains its high oxidation capacity and also improves its reaction selectivity. At present, the catalyst-activated permonosulfate process is widely used in the treatment of pollutant wastewater, but it still has problems such as poor adaptability to water quality requirements, low removal rate, and high cost. The advanced oxidation composite ultrasonic process developed in recent years has shown great potential in improving the removal and mineralization of difficult-to-degrade pollutants, and can achieve continuous detoxification of pollutants. In a typical direct composite system, the activated catalyst is first added to the system and mixed by magnetic stirring. When the adsorption reaches equilibrium, permonosulfate is added for activation to produce SO 4- · and ·OH are oxidized and degraded. At the same time, ultrasonic catalysis is carried out outside the reactor to promote the oxidation reaction.

[0003] Ultrasound can form tiny bubbles and eddies inside the liquid by producing cavitation and eddy effects, thereby achieving mixing and homogenization. In existing ultrasound-assisted catalytic reactors, ultrasound only radiates from a single direction. Although it can affect the liquid medium to a certain extent, its range and intensity are relatively limited. The physical effects it produces, such as cavitation and fluid dynamics, may not evenly cover the entire reaction system, and there is a certain limit to the increase in reaction rate. This may cause some areas in the reaction system to be less affected by ultrasound, thereby affecting the uniformity and efficiency of the catalytic reaction. The reaction rate may be slower because the unidirectional radiation of ultrasound may not be sufficient to fully excite all reactive sites, especially in complex chemical reactions. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide an ultrasound-assisted catalytic PMS treatment tank wash water reactor.

[0005] The purpose of the utility model is achieved through the following technical solutions.

[0006] An ultrasound-assisted catalytic PMS tank washing water treatment reactor comprises: a bioreactor and a plurality of ultrasonic probes for ultrasonicating the inside of the bioreactor, wherein the ultrasonic frequency formed by all the ultrasonic probes on the inside of the bioreactor is 10 to 100 Hz;

[0007] The bioreactor comprises: a reaction chamber and an aeration plate installed in the reaction chamber, a water outlet is formed at the upper part of the reaction chamber, and a water inlet is formed at the lower part of the reaction chamber; a water distribution plate is fixedly installed in the reaction chamber above the water inlet, and the water distribution plate comprises: a truncated cone-shaped baffle plate, and the baffle plate gradually shrinks from top to bottom;

[0008] The aeration plate is fixedly mounted on the bottom surface of the reaction chamber, the aeration pump is located outside the reaction chamber, and the aeration pump and the aeration plate are connected through a pipeline;

[0009] A plurality of fixing holes are formed on the reaction chamber, each fixing hole passes through an ultrasonic probe, and an outer end of each ultrasonic probe is fixed on an ultrasonic bracket;

[0010] A water inlet weir is installed on the water inlet;

[0011] The ultrasonic probes are respectively arranged on the side and top surface of the reaction chamber, and all the ultrasonic probes located on the side are divided into multiple groups, and each group of ultrasonic probes is arranged along the vertical direction of the reaction chamber.

[0012] In the above technical solution, a support frame is installed outside the lower part of the reaction chamber.

[0013] In the above technical solution, the water inlet weir includes: an annular plate body, the annular plate body is located in the reaction chamber and is coaxially arranged with the reaction chamber, and the top edge of the annular plate body extends outward from the axis and is fixed to the inner wall of the reaction chamber.

[0014] In the above technical solution, the water dividing plate includes: two truncated cone-shaped baffles of different sizes, the two baffles are coaxially arranged, and one baffle is sleeved outside the other baffle, and a gap is formed between the baffles.

[0015] In the above technical solution, the two baffles have the same height, and the radius ratio of the two baffles at the same height is 1:1.5.

[0016] In the above technical solution, the angle between the generatrix of the truncated cone and the bottom surface of the truncated cone is 45°.

[0017] In the above technical solution, the radius ratio of the aeration plate and the inner wall of the reaction chamber is 1:3.

[0018] In the above technical solution, an air outlet is formed on the top surface of the reaction chamber.

[0019] In the above technical solution, a sealing ring is arranged at each fixing hole to seal between the ultrasonic probe and the reaction chamber.

[0020] In the above technical solution, a gas flow meter is installed on the pipeline.

[0021] The beneficial effects of the ultrasonic-assisted catalytic PMS treatment tank washing water reactor of the utility model are as follows:

[0022] 1. Existing reactors are usually placed horizontally and use single-plane ultrasound. The utility model divides the ultrasonic probe into vertical and horizontal distributions, and changes the single-plane fluctuation into a double-plane fluctuation, thereby improving the ultrasound-assisted capability;

[0023] 2. The utility model adopts a water inlet weir to make the water flow into the reaction chamber more uniform, slow down the flow rate, and prevent the catalyst and oxygen from being insufficiently contacted due to the rapid water flow;

[0024] 3. The utility model adopts a water distribution plate to disrupt the water flow. For the air flow, the gas originally generated by the small area of ​​the aeration disk is evenly distributed to the large area of ​​the reaction chamber, thereby improving the oxygen utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view of a reactor for treating tank wash water using ultrasound-assisted catalytic PMS;

[0026] Figure 2 A stereoscopic view of an ultrasound-assisted catalytic PMS treatment reactor for tank wash water.

[0027] Among them, 1 is the water inlet, 2 is the ultrasonic bracket, 3 is the ultrasonic probe, 4 is the aeration plate, 5 is the gas flow meter, 6 is the reaction chamber, 7 is the water outlet, 8 is the baffle, 9 is the aeration pump, 10 is the motor, 11 is the impeller, 12 is the air inlet, 13 is the air outlet, 14 is the support frame, 15 is the water inlet weir, 16 is the water distribution plate, and 17 is the water pump. DETAILED DESCRIPTION

[0028] The ultrasonic-assisted catalytic PMS treatment tank wash water reactor of the utility model is described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] An ultrasonic assisted catalytic PMS reactor for treating tank washing water, as shown in the attached Figure 1 and Figure 2 As shown, it includes: a bioreactor and a plurality of ultrasonic probes 3 for ultrasonicating the inside of the bioreactor, and the ultrasonic frequency formed by all ultrasonic probes 3 on the inside of the bioreactor is 10-100HZ;

[0031] The bioreactor comprises: a reaction chamber 6 and an aeration plate 4 installed in the reaction chamber 6. The reaction chamber 6 is a cylindrical cavity made of transparent organic glass. A water outlet 7 is formed at the upper part of the reaction chamber 6, and a water inlet 1 is formed at the lower part of the reaction chamber 6. The water flow inside the reaction chamber 6 flows from bottom to top in the reaction chamber 6. The gas after aeration by the aeration plate 4 can stir the water in the reaction chamber 6. A water distribution plate 16 is fixedly installed in the reaction chamber 6 above the water inlet 1. The water distribution plate 16 comprises: a truncated cone-shaped baffle 8, and the baffle 8 gradually shrinks from top to bottom.

[0032] The aeration plate 4 is fixedly mounted on the bottom surface of the reaction chamber 6, the aeration pump 9 is located outside the reaction chamber 6, and the aeration pump 9 and the aeration plate 4 are connected by a pipeline;

[0033] A plurality of fixing holes are formed on the reaction chamber 6, each of which passes through an ultrasonic probe 3, and an outer end of each ultrasonic probe 3 is fixed on an ultrasonic bracket 2, and the ultrasonic bracket 2 is used to fix the ultrasonic probe 3;

[0034] A water inlet weir 15 is installed on the water inlet 1;

[0035] The ultrasonic probes 3 are respectively arranged on the side surface and the top surface of the reaction chamber 6 . All the ultrasonic probes 3 located on the side surface are divided into two groups, and each group of ultrasonic probes is arranged along the vertical direction of the reaction chamber 6 .

[0036] The working principle of the ultrasonic-assisted catalytic PMS treatment tank wash water reactor is as follows: introduce the wastewater containing pollutants to be treated into the reaction chamber 6, add the catalyst, start the aeration plate and the ultrasonic probe, add PMS after the adsorption and desorption equilibrium is reached, and continue to keep the aeration plate and the ultrasonic probe working, so as to achieve the degradation of the pollutants.

[0037] Example 2

[0038] A ultrasonic-assisted catalytic PMS reactor for treating tank wash water is provided. Based on Example 1, a support frame 14 is installed outside the lower part of the reaction chamber 6.

[0039] The water inlet weir 15 includes: an annular plate body, which is located in the reaction chamber 6 and is coaxially arranged with the reaction chamber 6 , and the top edge of the annular plate body extends outward from the axis and is fixed to the inner wall of the reaction chamber 6 .

[0040] The water divider 16 includes: two truncated cone-shaped baffles 8 of different sizes, the two baffles 8 are coaxially arranged, and one baffle 8 is sleeved outside the other baffle 8, and a gap is formed between the baffles 8. The two baffles 8 have the same height, and the radius ratio of the two baffles 8 at the same height is 1:1.5. The angle between the generatrix of the truncated cone and the bottom surface of the truncated cone is 45°.

[0041] The radius ratio of the aeration plate 4 and the inner wall of the reaction chamber 6 is 1:3.

[0042] A gas outlet 13 is formed on the top surface of the reaction chamber 6 .

[0043] A sealing ring is provided at each fixing hole for sealing between the ultrasonic probe 3 and the reaction chamber 6 .

[0044] A gas flow meter 5 is installed on the pipeline.

[0045] Example 3

[0046] An ultrasonic-assisted catalytic PMS tank washing water treatment reactor, based on Example 2, an aeration pump 9 includes: a motor 10, a housing and an impeller 11. The housing is a cavity, and an air inlet 12 and an air outlet (not shown in the figure) are formed on the housing. The air outlet is used to connect with the pipeline. The impeller 11 is located in the housing, and the motor 10 is axially connected to the impeller 11. The rotation of the motor 10 drives the impeller 11 to rotate, and then the air enters the housing through the air inlet 12, and then is input into the reaction chamber 6 from the air outlet for aeration.

[0047] The bioreactor further includes a water pump 17 , which is located outside the reaction chamber 6 and is connected to the reaction chamber 6 via a pipeline.

[0048] Example 4

[0049] The method for using the ultrasonic-assisted catalytic PMS reactor for treating tank washing water in Example 3 includes: introducing the wastewater to be treated into the reaction chamber 6, adding the catalyst, starting the aeration plate and the ultrasonic probe (ultrasonic frequency 100 Hz) for stirring and ultrasonic dispersion, firstly performing an adsorption reaction for 15 minutes, adding PMS after adsorption and desorption equilibrium, and continuing to keep the aeration plate and the ultrasonic probe working for t time, wherein the ratio of the volume fraction of the wastewater to be treated, the amount fraction of PMS and the mass fraction of the catalyst is 50:0.00025:25, the unit of the volume fraction is mL, the unit of the mass fraction is mg, the unit of the amount fraction is mol, the aeration volume of the aeration plate 4 is 3L / min (aeration is air), the wastewater to be treated is a phenol aqueous solution, and the concentration of phenol in the wastewater to be treated is 50mg / L. The catalyst is the metal ruthenium-doped manganese oxyhydroxide catalyst prepared in Example 1 of 2024105707718. When the removal rate of phenol reached 100%, t was less than 20s.

[0050] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be done by other technical personnel in this field without expending creative labor falls within the protection scope of the present invention.

Claims

1. An ultrasound-assisted catalytic PMS treatment tank wash water reactor, characterized in that: include: A bioreactor and a plurality of ultrasonic probes (3) for ultrasonicating the interior of the bioreactor, wherein the frequency of the ultrasonic waves generated by all the ultrasonic probes (3) on the interior of the bioreactor is 10 to 100 Hz; The bioreactor comprises: a reaction chamber (6) and an aeration plate (4) installed in the reaction chamber (6); a water outlet (7) is formed at the upper part of the reaction chamber (6), and a water inlet (1) is formed at the lower part of the reaction chamber (6); a water distribution plate (16) is fixedly installed in the reaction chamber (6) above the water inlet (1), and the water distribution plate (16) comprises: a truncated cone-shaped baffle (8), and the baffle (8) gradually shrinks from top to bottom; The aeration plate (4) is fixedly mounted on the bottom surface of the reaction chamber (6), the aeration pump (9) is located outside the reaction chamber (6), and the aeration pump (9) and the aeration plate (4) are connected via a pipeline; A plurality of fixing holes are formed on the reaction chamber (6), each fixing hole passes through an ultrasonic probe (3), and each ultrasonic probe (3) is fixedly mounted on an ultrasonic bracket (2) at an outer end thereof; A water inlet weir (15) is installed on the water inlet (1); The ultrasonic probes (3) are respectively arranged on the side and top surface of the reaction chamber (6); all the ultrasonic probes (3) located on the side are divided into multiple groups, and each group of ultrasonic probes (3) is arranged along the vertical direction of the reaction chamber (6).

2. The ultrasonic assisted catalytic PMS treatment tank wash water reactor according to claim 1 is characterized in that: A support frame (14) is installed outside the lower part of the reaction chamber (6).

3. The ultrasonic assisted catalytic PMS treatment tank wash water reactor according to claim 2 is characterized in that: The water inlet weir (15) comprises: an annular plate body, the annular plate body is located in the reaction chamber (6) and is coaxially arranged with the reaction chamber (6), the top edge of the annular plate body extends outward from the axis and is fixed to the inner wall of the reaction chamber (6).

4. The ultrasonic assisted catalytic PMS treatment tank wash water reactor according to claim 3 is characterized in that: The water dividing plate (16) comprises: two truncated cone-shaped baffles (8) of different sizes, the two baffles (8) are coaxially arranged, and one baffle (8) is sleeved outside the other baffle (8), and a gap is formed between the baffles (8).

5. The ultrasonic-assisted catalytic PMS tank wash water treatment reactor according to claim 4 is characterized in that: The two baffles (8) have the same height, and the radius ratio of the two baffles (8) at the same height is 1:1.

5.

6. The ultrasonic-assisted catalytic PMS treatment tank wash water reactor according to claim 5 is characterized in that: The included angle between the generatrix of the truncated cone and the bottom surface of the truncated cone is 45°.

7. The ultrasonic-assisted catalytic PMS treatment tank wash water reactor according to claim 6 is characterized in that: The radius ratio between the aeration plate (4) and the inner wall of the reaction chamber (6) is 1:

3.

8. The ultrasonic-assisted catalytic PMS treatment tank wash water reactor according to claim 7, characterized in that: An air outlet hole (13) is formed on the top surface of the reaction chamber (6).

9. The ultrasonic-assisted catalytic PMS treatment tank wash water reactor according to claim 8, characterized in that: A sealing ring is provided at each fixing hole, and is used to seal between the ultrasonic probe (3) and the reaction chamber (6).

10. The ultrasonic-assisted catalytic PMS treatment tank wash water reactor according to claim 9, characterized in that: A gas flow meter (5) is installed on the pipeline.

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