An industrial wastewater catalytic oxidation apparatus and a method of using the same

Abstract

The application discloses an industrial wastewater catalytic oxidation equipment and a use method thereof, which comprises a supporting frame, a reaction bucket is arranged in the center of the supporting frame, a water inlet pipe is arranged on one side of the outer wall of the reaction bucket, a connecting pipe is arranged on the other side of the outer wall of the reaction bucket, a sludge discharge pipe is fixedly connected to the bottom perforation of the reaction bucket, a collecting box is connected to the pipe opening of the sludge discharge pipe, an outer shell is riveted to the top of the reaction bucket, a gas storage tank is arranged above the supporting frame, a gas conveying pipe is connected to the tank opening of the gas storage tank, the pipe opening of the gas conveying pipe is arranged in the barrel body of the reaction bucket and an aeration head is arranged at the pipe opening, a stirring assembly is arranged in the center of the reaction bucket, a plurality of stirring blades are uniformly fixed on the stirring assembly, an installation base is fixed in the reaction bucket, a cleaning assembly is arranged in the center of the installation base, and a sludge scraping assembly is arranged on the cleaning assembly, wherein the device solves the problem that the current wastewater treatment equipment has high energy consumption and high wastewater treatment cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wastewater treatment, and particularly relates to an industrial wastewater catalytic oxidation equipment and a use method thereof. BACKGROUND

[0002] With the continuous enhancement of environmental awareness and the continuous promotion of environmental protection policy, more and more industrial enterprises begin to use industrial wastewater catalytic oxidation equipment. This advanced treatment equipment has become an important means to solve the problem of industrial wastewater pollution with its advantages of high efficiency, no secondary pollution, etc. Through catalytic oxidation technology, harmful substances in industrial wastewater can be rapidly decomposed and converted into harmless substances, effectively reducing the pressure on the environment and promoting the development of green industry.

[0003] At present, most industrial wastewater catalytic oxidation equipment uses advanced oxidation method to treat refractory wastewater. According to the generation mode and type of oxidant, it can be divided into direct oxidation and indirect oxidation. For ozone catalytic oxidation, the direct oxidation method is to directly oxidize refractory organic matter by ozone molecules, and the indirect oxidation method is to completely oxidize refractory organic matter by generating hydroxyl radicals through catalytic ozone. For electrochemical oxidation, the direct oxidation method is that electrons directly oxidize refractory organic matter, and the indirect oxidation method is to completely oxidize refractory organic matter by generating hydroxyl radicals on the surface of the anode. However, whether it is ozone catalytic oxidation or electrochemical catalytic oxidation, when treating refractory wastewater, there is a problem that the energy consumption is high, resulting in high wastewater treatment cost. This phenomenon has become a problem that personnel in the field urgently need to solve. SUMMARY

[0004] The purpose of the present application is to solve the problems raised in the background art by providing an industrial wastewater catalytic oxidation equipment and a use method thereof.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: an industrial wastewater catalytic oxidation equipment and a use method thereof, comprising a support frame, a reaction barrel is installed in the center of the support frame, the reaction barrel is a cylindrical structure with perforations at the top and the bottom, a water level sensor is installed inside the reaction barrel, a water inlet pipe is installed on one side of the outer wall of the reaction barrel, an electric control valve is installed in the water inlet pipe, a connecting pipe is installed on the other side of the outer wall of the reaction barrel, an electric control valve is installed in the connecting pipe, a sludge discharge pipe is fixedly connected to the perforation at the bottom of the reaction barrel, a collection box is connected to the pipe opening of the sludge discharge pipe, and an outer shell is riveted to the top of the reaction barrel.

[0006] The upper part of the support frame is provided with a gas storage tank, the tank opening of the gas storage tank is connected with a gas conveying pipe, the gas conveying pipe is a three-way pipe structure, the input pipe is communicated with the gas storage tank, and the other two output pipes are both provided with an electric control valve for controlling the gas flow of the two pipes.

[0007] The inside of the reaction barrel is fixedly provided with a mounting base, the central part of the mounting base is provided with a cleaning assembly, and the cleaning assembly is provided with a mud scraping assembly.

[0008] One side of the reaction barrel is provided with an electro-catalytic oxidation chamber, and the reaction barrel and the electro-catalytic oxidation chamber are communicated through the connecting pipe, one side of the electro-catalytic oxidation chamber is provided with a water outlet pipe, the water outlet pipe is provided with an electric control valve, and the water outlet pipe and the connecting pipe are located on the two sides of the electro-catalytic oxidation chamber.

[0009] According to the above technical scheme, the stirring assembly comprises a rotating motor, the rotating motor is riveted to the inner wall of the shell, a driving rod is connected to the rotating motor, a driving gear is sleeved on the end of the driving rod, a connecting block is sleeved on the driving rod and located between the rotating motor and the driving gear, first and second connecting rods are welded on the opposite sides of the connecting block, the first and second connecting rods are both "L"-shaped rod bodies, a pipeline is vertically arranged on the shorter rod of the first connecting rod, a first driven gear is movably connected to the pipeline, and a first stirring rod is arranged in the center of the first driven gear.

[0010] A second stirring rod is arranged on the shorter rod of the second connecting rod and sleeved on the outer side of the first stirring rod, a second driven gear is sleeved on the second stirring rod, and the second driven gear is located above the second connecting rod and opposite to the gear teeth of the first driven gear.

[0011] According to the above technical scheme, the driving gear is engaged with the first and second driven gears, and a plurality of stirring blades are uniformly welded on the first and second stirring rods.

[0012] According to the above technical scheme, the upper part of the mounting base is fixedly connected with a buffer wall, the buffer wall is arc-shaped and faces the center of the reaction barrel, and the flow direction of wastewater and impurities is guided.

[0013] According to the technical scheme, the cleaning assembly comprises a rotating interface movably connected above the bottom perforation of the reaction barrel, a mud scraping assembly is welded to the outer wall of the rotating interface, a large bevel gear is sleeved on the outer wall of the rotating interface, a driving motor is fixedly installed in the interior of the mounting base, a small bevel gear is connected to the driving motor, and the small bevel gear is in meshing connection with the large bevel gear.

[0014] According to the technical scheme, the mud scraping assembly comprises an electric push rod riveted with the rotating interface, a waterproof shell is arranged on the outer side of the electric push rod, the electric push rod is welded with the rotating interface, a mud scraping plate is installed at the end of the electric push rod, and the side of the mud scraping plate is in a trapezoidal structure.

[0015] According to the technical scheme, the industrial wastewater catalytic oxidation equipment comprises the following steps:

[0016] The maximum threshold value of the wastewater amount in the reaction barrel is H, the actual amount of the wastewater reflected by the water level sensor in the reaction barrel is h, the stirrable height of the first stirring rod is L, and the lowest stirrable water level height of the stirring assembly is l.

[0017] S1: connecting the wastewater pipeline with the water inlet pipe so that the wastewater is introduced into the reaction barrel;

[0018] S2: when the water level sensor detects that the wastewater level reaches H, the electric control valve in the gas inlet pipe is opened, the ozone in the gas storage tank is introduced into the reaction barrel, the stirring assembly is started, and the wastewater is subjected to ozone catalytic oxidation reaction to obtain the preliminary treated wastewater;

[0019] S3: the cleaning assembly and the mud scraping assembly are opened, and are periodically moved and intermittently operated by system setting to continuously scrape the deposits on the bottom of the reaction barrel, and the cleaned deposits enter the collecting box along the mud discharge pipe;

[0020] S4: the maximum threshold value of the wastewater amount in the reaction barrel is H, the actual amount of the wastewater reflected by the water level sensor in the reaction barrel is h, the lowest stirring height of the stirring assembly is L, and the electric control valve in the connecting pipe is opened according to the wastewater in the reaction barrel;

[0021] S5: the wastewater enters the electro-catalytic oxidation chamber from the connecting pipe, that is, the preliminary treated wastewater is added into the electro-catalytic oxidation device to perform electro-catalytic oxidation reaction, and the treated wastewater is obtained;

[0022] S6: the treated wastewater after the catalytic oxidation operation is discharged from the water outlet pipe.

[0023] According to the technical scheme, the step S4 comprises the following steps:

[0024] S4-1: When h is equal to H, the electrically controlled valve in the connecting pipe is normally opened, so that the wastewater treated by ozone catalytic oxidation enters into the electro-catalytic oxidation chamber;

[0025] S4-2: When h is less than H, further division processing is needed;

[0026] S4-21: When h is less than H and greater than L, the electrically controlled valve in the gas feeding pipe is reduced to reduce ozone emission, and the electrically controlled valve in the water feeding pipe is adjusted to increase the wastewater quantity, until h is equal to H, the electrically controlled valve in the gas feeding pipe restores normal ozone emission, the water feeding pipe stops feeding wastewater, and the stirring assembly is opened to stir and mix for a period of time, and then the electrically controlled valve in the connecting pipe and the electrically controlled valve in the water feeding pipe are opened in sequence;

[0027] S4-22: When h is less than H and less than L but greater than l, the electrically controlled valve in the gas feeding pipe connected with the aeration head opposite to the lower half of the stirring blade is closed, the electrically controlled valve in the gas feeding pipe connected with the aeration head below the stirring blade is adjusted to be smaller, the rotating motor is controlled to be reversed to make the ozone bubbles flow in the opposite direction, and the electrically controlled valve in the water feeding pipe is adjusted to be larger to increase the wastewater feeding quantity of the reaction barrel, until the wastewater quantity in the reaction barrel reaches L, the electrically controlled valve in the gas feeding pipe connected with the aeration head below the stirring blade is adjusted back, and the ozone output of the aeration head is restored to be normal;

[0028] S4-23: When h is less than H and less than l, the stirring assembly is stopped, the electrically controlled valve in the gas feeding pipe is closed to stop ozone input, and the water feeding pipe also needs to be adjusted to be larger, until h reaches L, the wastewater treatment operation system opens the stirring assembly to stir, the electrically controlled valve in the gas feeding pipe is opened and controlled to be smaller to input ozone, and then, when the water level sensor detects that h reaches H, the electrically controlled valve in the water feeding pipe is closed, the electrically controlled valve in the gas feeding pipe normally inputs ozone, and the electrically controlled valve in the connecting pipe and the electrically controlled valve in the water feeding pipe are opened in sequence after sufficient mixing is completed by the stirring assembly;

[0029] S4-3: When h is greater than H, the electrically controlled valve in the connecting pipe is adjusted to be smaller, so that the preliminary treated wastewater slowly enters into the electro-catalytic oxidation chamber, and then, when the water level sensor detects that h is lower than H, the normal flow of the electrically controlled valve in the water feeding pipe and the electrically controlled valve in the connecting pipe is restored;

[0030] S4-31: After the processing of S4-3, when h is greater than H again within a period of time T, the electrically controlled valve in the connecting pipe is still adjusted to be smaller, and the continuous driving of the cleaning assembly and the mud scraping assembly is controlled, so that the precipitates in the reaction barrel are treated, and then, when the water level sensor feeds back that the water level h is no longer frequently higher than H, the normal driving frequency of the cleaning assembly and the mud scraping assembly is restored.

[0031] Compared with the prior art, the present application has the advantages that:

[0032] (1) By setting the stirring assembly, the wastewater and ozone are fully stirred and mixed, and then staggered vortex flow is generated, which helps to break large bubbles, increase gas-liquid contact area, and thus improve the dissolution rate and oxidation effect of ozone;

[0033] (2) By setting the cleaning assembly and the mud scraping assembly to cooperatively treat the sediments, the removal of the sediments in all directions is realized, the treatment efficiency is greatly improved, and the stable guarantee for the continuous treatment of the wastewater is provided to a great extent. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0035] Figure 1 is a schematic view of the overall structure of the embodiment of the present application;

[0036] Figure 2 is a schematic view of the internal structure of the reaction bucket of the embodiment of the present application;

[0037] Figure 3 is a schematic view of the structure of the connection between the reaction bucket and the stirring assembly of the embodiment of the present application;

[0038] Figure 4 is a schematic view of the structure of the stirring assembly of the embodiment of the present application;

[0039] Figure 5 is a schematic view of the structure of the cleaning assembly of the embodiment of the present application;

[0040] Figure 6 is a schematic view of the structure of the mud scraping plate of the embodiment of the present application;

[0041] Figure 7 is a schematic view of the structure of the buffer wall of the embodiment of the present application;

[0042] As shown in the figure, 1 is a support frame; 2 is a reaction bucket; 3 is a water inlet pipe; 4 is a connecting pipe; 5 is a sludge discharge pipe; 6 is a collection box; 7 is an outer shell; 8 is a gas storage tank; 9 is a gas conveying pipe; 10 is an aeration head; 11 is a stirring assembly; 111 is a rotating motor; 112 is a driving rod; 113 is a driving gear; 114 is a first connecting rod; 115 is a pipeline; 116 is a first driven gear; 117 is a first stirring rod; 118 is a second connecting rod; 119 is a second driven gear; 1110 is a second stirring rod; 12 is a stirring blade; 13 is a mounting base; 131 is a buffer wall; 14 is a cleaning assembly; 141 is a rotating interface; 142 is a large bevel gear; 143 is a driving motor; 144 is a small bevel gear; 15 is a sludge scraping assembly; 151 is an electric push rod; 152 is a sludge scraping plate; 16 is an electro-catalytic oxidation chamber; 17 is a water outlet pipe. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be further described in detail below with reference to the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0044] The embodiments of the present application provide an industrial wastewater catalytic oxidation equipment and a use method thereof, Figure 1 A structural schematic diagram of an industrial wastewater catalytic oxidation equipment according to an embodiment of the present application is shown in the figure, Figures 1-3 The industrial wastewater catalytic oxidation equipment comprises a support frame 1, a reaction bucket 2 is installed in the center of the support frame 1, the reaction bucket 2 is a barrel structure with perforations at the top and the bottom, a water level sensor is installed in the inside of the reaction bucket 2, a water inlet pipe 3 is installed on one side of the outer wall of the reaction bucket 2, an electric control valve is installed in the water inlet pipe 3, a connecting pipe 4 is installed on the other side of the outer wall of the reaction bucket 2, an electric control valve is installed in the connecting pipe 4, a sludge discharge pipe 5 is fixedly connected to the perforation at the bottom of the reaction bucket 2, an electric control valve is installed in the sludge discharge pipe 5, and the sludge discharge pipe 5 is connected with a collection box 6 at the pipe opening thereof, and an outer shell 7 is riveted to the top of the reaction bucket 2.

[0045] The upper part of the support frame 1 is provided with a gas storage tank 8, and the tank opening of the gas storage tank 8 is connected with a gas conveying pipe 9, which is a three-way pipe structure, wherein the input pipe is communicated with the gas storage tank 8, and the other two output pipes are both provided with an electric control valve for controlling the gas flow of the two pipes. The two output pipes of the gas conveying pipe 9 are both penetrated into the barrel body of the reaction barrel 2 and are both provided with an aeration head 10 at the pipe opening for ensuring the sufficient contact between ozone and wastewater. The two aeration heads 10 are installed in opposite directions in the reaction barrel 2. The central part of the reaction barrel 2 is penetrated with a stirring assembly 11, which is uniformly provided with a plurality of stirring blades 12. The vertical direction of the two aeration heads 10 is upward and downward, and one of the aeration heads 10 is located below the stirring blades 12, so that the gas bubbles have more opportunities to contact the stirring blades 12 in the rising process. The other aeration head 10 is opposite to the lower half center part of the stirring blades 12, so as to ensure that there are enough gas bubbles in the whole reaction barrel, and the overall oxidation efficiency is improved. (Because the installation heights of the two aeration heads 10 are different, the flow of the two aeration heads 10 needs to be determined by adjusting the electric control valve, so as to maximize the overall gas-liquid contact area.)

[0046] The inside of the reaction barrel 2 is fixedly provided with a mounting base 13, and the central part of the mounting base 13 is provided with a cleaning assembly 14, and the cleaning assembly 14 is provided with a mud scraping assembly 15.

[0047] One side of the reaction barrel 2 is provided with an electro-catalytic oxidation chamber 16, and the reaction barrel 2 and the electro-catalytic oxidation chamber 16 are communicated through the connecting pipe 4. One side of the electro-catalytic oxidation chamber 16 is provided with a water outlet pipe 17, and the water outlet pipe 17 is provided with an electric control valve. The water outlet pipe 17 and the connecting pipe 4 are located on both sides of the electro-catalytic oxidation chamber 16.

[0048] Among them, the water level sensor, the electric control valve, the stirring assembly 11, the cleaning assembly 14 and the mud scraping assembly 15 are signal connected with the wastewater treatment operation system.

[0049] Waste water enters the reaction barrel 2 from the water inlet pipe 3, and at the same time, the gas inlet pipe 9 is opened to introduce ozone in the gas storage tank 8 into the reaction barrel 2. The ozone reaches the aeration head 10 through the gas inlet pipe 9, is fully mixed into the waste water through the aeration head 10, and then the stirring assembly 11 is started to stir the waste water, so that the ozone is mixed with the waste water to remove most of the easily oxidizable organic matter in the waste water, reduce the burden of subsequent electro-catalytic oxidation, and at the same time, part of the impurities are deposited at the bottom of the reaction barrel 2, cleaned by the cleaning assembly 14, and scraped off by the mud scraping assembly 15. The scraped-off sediment falls into the collection box 6 through the mud discharge pipe 5. The collection box 6 needs to be cleaned regularly. Since the position of the mud discharge pipe 5 is lower than the height of the connecting pipe 4 (the preliminary treatment waste water outlet), and an electric control valve is installed in the mud discharge pipe 5, the heavier sediment is deposited at the bottom of the reaction barrel 2 under the action of gravity and is discharged through the mud discharge pipe 5, and the treated oxidized waste water is discharged through the oxidized waste water outlet at a higher position. The waste water enters the electro-catalytic oxidation chamber 16 through the connecting pipe 4, is subjected to electro-catalytic oxidation operation, and is finally discharged from the water outlet pipe 17. The waste water after preliminary treatment enters the electro-catalytic oxidation stage. At this time, the waste water no longer needs to increase the gas-liquid contact area by gas flow. This means that there is no need for the existence of gas flow in the electro-catalytic oxidation process, thereby avoiding the influence of gas flow on the mass transfer efficiency and improving the overall effect of waste water treatment.

[0050] In some preferred embodiments, the stirring assembly 11 comprises a rotating motor 111 riveted to the inner wall of the shell 7, a driving rod 112 connected to the rotating motor 111, a driving gear 113 sleeved at the end of the driving rod 112, a connecting block sleeved on the driving rod 112 between the rotating motor 111 and the driving gear 113, a first connecting rod 114 and a second connecting rod 118 welded on the opposite sides of the connecting block, the first connecting rod 114 and the second connecting rod 118 being both "L"-shaped rod structures, a pipeline 115 vertically penetrating the shorter rod of the first connecting rod 114, a first driven gear 116 movably connected to the pipeline 115, and a first stirring rod 117 penetrating the center of the first driven gear 116. The second stirring rod 1110 penetrates the shorter rod of the second connecting rod 118 and is sleeved outside the first stirring rod 117. The second stirring rod 1110 is sleeved with a second driven gear 119 located above the second connecting rod 118 and opposite the gear teeth of the first driven gear 116. After the waste water treatment operation system starts the stirring assembly 11, the rotating motor 111 is driven, the driving rod 112 rotates to drive the driving gear 113 to rotate, thereby achieving the driving effect.

[0051] In some preferred embodiments, the driving gear 113 meshes with the first driven gear 116 and the second driven gear 119 respectively, and a plurality of stirring blades 12 are uniformly welded on the first stirring rod 117 and the second stirring rod 1110. The driving gear 113 drives the first driven gear 116 and the second driven gear 119 to rotate, the first driven gear 116 drives the first stirring rod 117 to rotate, and the second driven gear 119 drives the second stirring rod 1110 to rotate. Since the first driven gear 116 and the second driven gear 119 are oppositely arranged, their rotating directions are opposite, thereby causing the first stirring rod 117 and the second stirring rod 1110 to rotate in opposite directions. The assembly can generate staggered vortex flow, which helps to break large bubbles and increase the gas-liquid contact area, thereby improving the dissolution rate of ozone and the oxidation effect.

[0052] In some optional embodiments, when the wastewater level is in a normal state, the first stirring rod 117 rotates counterclockwise and the second stirring rod 1110 rotates clockwise, which can generate greater shear force, helping to break the aggregation of ozone bubbles, promoting gas-liquid contact, and improving the dissolution efficiency.

[0053] In some preferred embodiments, as shown in Figure 7 The upper portion of the mounting base 13 is fixedly connected with a buffer wall 131, which is arc-shaped and faces the center of the reaction barrel 2. The buffer wall 131 guides the flow direction of wastewater and impurities, making them flow more smoothly to the bottom of the reaction barrel 2. At the same time, the buffer wall 131 reduces the dead angle area on the inner wall of the reaction barrel 2, making it easier to scrape or flush away the impurities, thereby simplifying the maintenance and cleaning work and better achieving the continuous processing effect of the equipment.

[0054] In some preferred embodiments, as shown in Figure 5 The cleaning assembly 14 includes a rotating interface 141, which is movably connected above the bottom hole of the reaction barrel 2. A mud scraping assembly 15 is welded on the outer wall of the rotating interface 141. A large bevel gear 142 is sleeved on the outer wall of the rotating interface 141. A driving motor 143 is fixedly installed in the mounting base 13. A small bevel gear 144 is connected to the driving motor 143. When the bottom sediment in the reaction barrel 2 needs to be treated, the cleaning assembly 14 is started. At this time, the driving motor 143 is started to drive the small bevel gear 144 to rotate. Since the small bevel gear 144 meshes with the large bevel gear 142, the rotation of the small bevel gear 144 drives the large bevel gear 142 to rotate, thereby driving the rotating interface 141 to rotate through the large bevel gear 142, and finally achieving the mud scraping effect of the mud scraping assembly 15 on the bottom of the reaction barrel 2, which can scrape off the sediment adsorbed thereon.

[0055] In some preferred embodiments, as shown in Figure 6 , 7 The mud scraping assembly 15 includes an electric push rod 151 riveted with the rotating interface 141, and a waterproof shell is arranged outside the electric push rod 151 and welded with the rotating interface 141. The end of the electric push rod 151 is provided with a mud scraping plate 152. As shown in Figure 6 The side of the mud scraping plate 152 is in a trapezoidal structure. When the mud scraping plate 152 linearly displaces along the electric push rod 151, the deposits on the path will be scooped up by the inclined surface of the displacement direction of the mud scraping plate 152 to above the bottom of the reaction barrel 2, so as to be separated from the bottom surface of the reaction barrel 2, thereby greatly reducing the residue of the deposits on the bottom of the reaction barrel 2, and the scooped-up deposits will flow along the buffer wall 131 and return to the lower part of the reaction barrel 2 without entering the stirring area above, thereby avoiding the mixing of impurities and increasing the wear of mechanical parts.

[0056] In some optional embodiments, the movement trajectory of the mud scraping assembly 15 is that the mud scraping plate 152 rotates around the center of the bottom of the reaction barrel 2 under the action of the cleaning assembly 14, and reciprocally displaces along the linear direction of the electric push rod 151 under the action of the electric push rod 151, so that the mud scraping plate 152 rotates while scraping the deposits in the path range of the electric push rod 151, and the cleaning of all the deposits in the bottom range of the reaction barrel 2 is realized through the joint driving of the two. The scraped deposits are discharged through the mud discharge pipe 5 and collected by the collection box 6. Generally, the mud scraping assembly 15 and the cleaning assembly 14 are driven at a set time interval to perform timed deposit cleaning, thereby ensuring the continuous treatment of wastewater.

[0057] In some optional embodiments, in order to realize the continuous treatment effect of wastewater, the wastewater treatment operation system needs to control the wastewater amount, the deposit condition and the ozone concentration in the reaction barrel 2 in real time.

[0058] Specifically, the maximum threshold value of the wastewater amount in the reaction barrel 2 is H, the actual amount of wastewater reflected by the water level sensor in the reaction barrel 2 is h, the stirrable height of the first stirring rod 117 is L, and the lowest stirrable water level height of the stirring assembly 11 is l.

[0059] When h is equal to H, it indicates that the wastewater amount in the reaction barrel 2 is at a normal value, and after the ozone input from the gas storage tank 8 through the gas input pipe 9 is uniformly mixed with the reaction barrel 2 by the stirring assembly 11, the catalytic oxidation reaction is completed, the preliminary treated wastewater is obtained, and then the preliminary treated wastewater enters the electro-catalytic oxidation chamber 16 through the connecting pipe 4 to perform the electro-catalytic oxidation reaction, and the treated wastewater is obtained.

[0060] When h is less than H, it means that the amount of wastewater in the reaction bucket 2 is small. If the water level sensor detects that h is greater than L at this time, the wastewater treatment operation system first adjusts the electric control valve in the gas inlet pipe 9 on the gas tank 8 to reduce the input of ozone, so as to avoid the high concentration of ozone in the reaction bucket 2 from causing strong oxidation and even causing corrosion of the equipment. Then the wastewater treatment operation system adjusts the electric control valve in the water inlet pipe 3 to increase the amount of wastewater input into the reaction bucket 2 until the amount of wastewater in the reaction bucket 2 reaches H. At this time, the electric control valve in the gas inlet pipe 9 will restore normal ozone input.

[0061] Under the above condition that h is less than H, if the water level sensor detects that h is less than L but greater than 1 at this time, it means that only the first stirring rod 117 can achieve the stirring effect at this time. At this time, the system closes the electric control valve in the gas inlet pipe 9 connected to the aeration head 10 opposite to the lower half of the stirring blade 12, so as to avoid the ozone from escaping the water surface without being dissolved, causing waste of ozone and reducing the effective amount of ozone available for oxidation of harmful substances in the wastewater. At the same time, the electric control valve in the gas inlet pipe 9 connected to the aeration head 10 below the stirring blade 12 is adjusted to be smaller, so as to avoid too many ozone bubbles from not being broken in time, also causing pollution and waste. At this time, the rotating motor 111 needs to be reversed, so that the first stirring rod 117 rotates clockwise, so that the ozone bubbles flow backward. Under the condition of backward flow, the relative speed of bubbles and wastewater is large, which can prolong the contact time of bubbles and wastewater, thereby increasing the gas-liquid contact area and the dissolution time of ozone. At the same time, the electric control valve in the water inlet pipe 3 is adjusted to be larger to increase the amount of wastewater input into the reaction bucket 2 until the amount of wastewater in the reaction bucket 2 reaches L. Then the electric control valve in the gas inlet pipe 9 connected to the aeration head 10 below the stirring blade 12 is adjusted back to normal, and the water level reaches H. The ozone output of the aeration head 10 returns to normal.

[0062] Under the above condition that h is less than H, if the water level sensor detects that h is less than 1 at this time, it means that the amount of wastewater is too low at this time, which is not suitable for operation. At this time, the stirring assembly 11 stops and the electric control valve in the gas inlet pipe 9 stops the input of ozone, and the electric control valve in the connecting pipe 4 is also closed. At the same time, the water inlet pipe 3 needs to be adjusted to a larger size so that a large amount of wastewater is input into the reaction bucket 2 for treatment. When the wastewater height reaches L, the wastewater treatment operation system starts the stirring assembly 11 for stirring, opens and controls the electric control valve in the gas inlet pipe 9 with a small amount of input for ozone input. When the water level sensor detects that h reaches H, the electric control valve in the water inlet pipe 3 is closed, the electric control valve in the gas inlet pipe 9 normally inputs ozone, and the electric control valve in the connecting pipe 4 and the electric control valve in the water inlet pipe 3 are sequentially opened after the stirring assembly 11 completes the mixing.

[0063] When h is greater than H, it indicates that the amount of wastewater in the reaction bucket 2 is relatively large at this time, in order to prevent the reverse flow phenomenon, the electric control valve in the water inlet pipe 3 needs to be closed, and in order to prevent the wastewater without preliminary treatment from being directly introduced into the electro-catalytic oxidation chamber 16, the electric control valve in the connecting pipe 4 needs to be adjusted to be small, so that the wastewater slowly enters the electro-catalytic oxidation chamber 16. Until the water level sensor detects that h is lower than H, the normal flow of the electric control valve in the water inlet pipe 3 and the connecting pipe 4 is restored.

[0064] Under the condition that h is greater than H, after the above regulation, h is lower than H, and h is greater than H again within a period of time T, it indicates that the precipitate in the reaction bucket 2 is too much at this time, which occupies a large volume of the reaction bucket 2, resulting in frequent water level over-high in the reaction bucket 2. At this time, the wastewater treatment operation system will control the continuous driving of the cleaning assembly 14 and the mud scraping assembly 15, that is, the mud scraping plate 152 rotates around the center of the bottom of the reaction bucket 2 under the action of the cleaning assembly 14, and reciprocally displaces along the linear direction of the electric push rod 151 under the action of the electric push rod 151. The scraped precipitate is discharged through the mud discharge pipe 5 and collected by the collection box 6. After a period of continuous cleaning, the large amount of precipitate in the reaction bucket 2 is treated. Until the water level sensor feedbacks that the water level h is no longer frequently higher than H, the cleaning assembly 14 and the mud scraping assembly 15 restore the normal driving frequency.

[0065] The use method of the industrial wastewater catalytic oxidation equipment is:

[0066] S1: connect the wastewater pipeline with the water inlet pipe 3, so that the wastewater is introduced into the reaction bucket 2;

[0067] S2: when the water level sensor detects that the wastewater level reaches H, open the electric control valve in the gas conveying pipe 9, so that the ozone in the gas storage tank 8 is introduced into the reaction bucket 2, start the stirring assembly 11, and make the wastewater undergo ozone catalytic oxidation reaction to obtain the preliminary treated wastewater;

[0068] S3: open the cleaning assembly 14 and the mud scraping assembly 15, and make them periodically move and intermittently operate to continuously scrape the precipitate on the bottom of the reaction bucket 2. The cleaned precipitate will enter the collection box 6 along the mud discharge pipe 5;

[0069] S4: set the maximum threshold value of the wastewater in the reaction bucket 2 as H, the actual amount of wastewater in the reaction bucket 2 reflected by the water level sensor as h, and the lowest stirring height of the stirring assembly 11 as L. According to the wastewater in the reaction bucket 2, open the electric control valve in the connecting pipe 4;

[0070] S4-1: when h is equal to H, the electric control valve in the connecting pipe 4 is normally opened, so that the wastewater after ozone catalytic oxidation enters the electro-catalytic oxidation chamber 16;

[0071] S4-2: When h is less than H, further division processing is required;

[0072] S4-21: When h is less than H and greater than L, the electrically controlled valve in the gas conveying pipe 9 reduces the ozone discharge, the electrically controlled valve in the water inlet pipe 3 increases the input of wastewater, until h is equal to H, the electrically controlled valve in the gas conveying pipe 9 restores the normal discharge of ozone, the water inlet pipe 3 stops the input of wastewater, the stirring assembly 11 is opened, and after a period of stirring and mixing, the electrically controlled valve in the connecting pipe 4 and the electrically controlled valve in the water inlet pipe 3 are opened in turn;

[0073] S4-22: When h is less than H and less than L but greater than l, the electrically controlled valve in the gas conveying pipe 9 connected to the aeration head 10 opposite to the lower half of the stirring blade 12 is closed, and the electrically controlled valve in the gas conveying pipe 9 connected to the aeration head 10 below the stirring blade 12 is reduced. The rotating motor 111 is controlled to reverse to make the ozone bubbles flow in the opposite direction. At the same time, the electrically controlled valve in the water inlet pipe 3 is increased to increase the amount of wastewater input into the reaction barrel 2, until the amount of wastewater in the reaction barrel 2 reaches L, and then the electrically controlled valve in the gas conveying pipe 9 connected to the aeration head 10 below the stirring blade 12 is adjusted back, until the water level reaches H, and the ozone output of the aeration head 10 returns to normal;

[0074] S4-23: When h is less than H and less than l, the stirring assembly 11 is stopped, the electrically controlled valve in the gas conveying pipe 9 is closed to stop the input of ozone, and the water inlet pipe 3 also needs to be increased, until h reaches L, the wastewater treatment operation system opens the stirring assembly 11 for stirring, the electrically controlled valve in the gas conveying pipe 9 with a small amount of input is opened and controlled, and the input of ozone is performed, and then until the water level sensor detects that h reaches H, the electrically controlled valve in the water inlet pipe 3 is closed, the electrically controlled valve in the gas conveying pipe 9 normally inputs ozone, and after sufficient mixing by the stirring assembly 11, the electrically controlled valve in the connecting pipe 4 and the electrically controlled valve in the water inlet pipe 3 are opened in turn;

[0075] S4-3: When h is greater than H, the electrically controlled valve in the connecting pipe 4 is reduced, so that the preliminary treated wastewater slowly enters the electro-catalytic oxidation chamber 16. Until the water level sensor detects that h is lower than H, the normal flow of the electrically controlled valve in the water inlet pipe 3 and the electrically controlled valve in the connecting pipe 4 is restored;

[0076] S4-31: After the processing of S4-3, when h is greater than H again within a period of time T, the electrically controlled valve in the connecting pipe 4 is still reduced, and the continuous driving of the cleaning assembly 14 and the mud scraping assembly 15 is controlled, so that the sediment in the reaction barrel 2 is treated, and then until the water level sensor feedbacks that the water level h is no longer frequently higher than H, the normal driving frequency of the cleaning assembly 14 and the mud scraping assembly 15 is restored;

[0077] S5: the wastewater from the connecting pipe 4 enters into the electro-catalytic oxidation chamber 16, i.e. the preliminary treated wastewater is added into the electro-catalytic oxidation device to perform electro-catalytic oxidation reaction, and treated wastewater is obtained;

[0078] S6: the treated wastewater after completing the catalytic oxidation operation is discharged from the water outlet pipe 17.

[0079] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0080] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent substitutions for part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of using an industrial wastewater catalytic oxidation device, wherein the industrial wastewater catalytic oxidation device used in the method includes a support frame (1), characterized in that, A reaction tank (2) is installed in the center of the support frame (1). The reaction tank (2) is a cylindrical structure with perforations at both the top and bottom. A water level sensor is installed inside the reaction tank (2). A water inlet pipe (3) is installed on one side of the outer wall of the reaction tank (2). An electric control valve is installed inside the water inlet pipe (3). A connecting pipe (4) is installed on the other side of the outer wall of the reaction tank (2). An electric control valve is installed inside the connecting pipe (4). A sludge discharge pipe (5) is fixedly connected to the perforation at the bottom of the reaction tank (2). A collection box (6) is connected to the opening of the sludge discharge pipe (5). A shell (7) is riveted to the top of the reaction tank (2). A gas storage tank (8) is installed above the support frame (1). A gas supply pipe (9) is connected to the opening of the gas storage tank (8). The gas supply pipe (9) is a three-way pipe structure. The input pipe is connected to the gas storage tank (8). The other two output pipes are equipped with electric control valves to control the gas supply flow of the two pipes. The two output pipes of the gas supply pipe (9) are inserted into the body of the reaction tank (2) and an aeration head (10) is installed at the pipe opening to ensure that ozone and wastewater are in full contact and improve the utilization rate of ozone. A stirring assembly (11) is inserted through the center of the reaction tank (2). Several stirring blades (12) are evenly fixed on the stirring assembly (11). The reaction vessel (2) is fixed with an installation base (13) inside. A cleaning component (14) is installed in the center of the installation base (13), and a sludge scraper (15) is installed on the cleaning component (14). An electrocatalytic oxidation chamber (16) is provided on one side of the reaction tank (2), and the reaction tank (2) and the electrocatalytic oxidation chamber (16) are connected by the connecting pipe (4). A water outlet pipe (17) is installed on one side of the electrocatalytic oxidation chamber (16), and an electric control valve is installed in the water outlet pipe (17). The water outlet pipe (17) and the connecting pipe (4) are located on both sides of the electrocatalytic oxidation chamber (16). The stirring assembly (11) includes a rotary motor (111), which is riveted to the inner wall of the outer shell (7). A drive rod (112) is connected to the rotary motor (111), and a drive gear (113) is sleeved at the end of the drive rod (112). A connecting block is sleeved on the drive rod (112) and located between the rotary motor (111) and the drive gear (113). A first connecting rod (114) and a second connecting rod (118) are welded to opposite sides of the connecting block. Both the first connecting rod (114) and the second connecting rod (118) are "L"-shaped rod structures. A pipe (115) is vertically inserted through the shorter rod of the first connecting rod (114). A first driven gear (116) is movably connected to the pipe (115), and a first stirring rod (117) is inserted through the center of the first driven gear (116). The shorter rod of the second connecting rod (118) is provided with a second stirring rod (1110), and the second stirring rod (1110) is sleeved on the outside of the first stirring rod (117). The second stirring rod (1110) is provided with a second driven gear (119), and the second driven gear (119) is located above the second connecting rod (118) and is opposite to the teeth of the first driven gear (116). The driving gear (113) meshes with the first driven gear (116) and the second driven gear (119) respectively, and a number of stirring blades (12) are uniformly welded on the first stirring rod (117) and the second stirring rod (1110). The two aeration heads (10) are vertically distributed up and down, with one aeration head (10) located below the stirring blade (12) and the other aeration head (10) opposite to the lower center of the stirring blade (12). Includes the following steps: The maximum threshold value of wastewater in the reaction tank (2) is set to H, the actual amount of wastewater reflected by the water level sensor in the reaction tank (2) is h, the stirring height of the first stirring rod (117) is L, and the minimum stirring water level height of the stirring assembly (11) is l. S1: Connect the wastewater pipe to the inlet pipe (3) so that the wastewater can flow into the reaction tank (2); S2: When the water level sensor detects that the wastewater level has reached H, the electric control valve in the gas supply pipe (9) is opened, so that the ozone in the gas storage tank (8) is introduced into the reaction tank (2), and the stirring component (11) is started to make the wastewater undergo ozone catalytic oxidation reaction to obtain pre-treated wastewater. S3: Turn on the cleaning component (14) and the sludge scraping component (15), and make it move periodically through the system settings. The intermittent operation continuously scrapes away the sediment at the bottom of the reaction tank (2). The cleaned sediment will enter the collection box (6) through the sludge discharge pipe (5). S4: Set the maximum threshold of wastewater volume in the reaction tank (2) to H, the actual amount of wastewater reflected by the water level sensor in the reaction tank (2) to h, the minimum stirring height of the stirring component (11) to l, and open the electric control valve in the connecting pipe (4) according to the wastewater situation in the reaction tank (2). S5: Wastewater enters the electrocatalytic oxidation chamber (16) from the connecting pipe (4), that is, the pre-treated wastewater is added to the electrocatalytic oxidation device to carry out the electrocatalytic oxidation reaction and obtain the treated wastewater; S6: The wastewater from the catalytic oxidation process will be discharged from the effluent pipe (17); Step S4 includes the following steps: S4-1: When h equals H, the electric control valve in the connecting pipe (4) is opened normally, allowing the wastewater that has undergone ozone catalytic oxidation to enter the electrocatalytic oxidation chamber (16); S4-2: When h is less than H, further partitioning is required; S4-21: When h is less than H and greater than L, the electric control valve in the gas transmission pipe (9) reduces ozone emission, and the electric control valve in the water inlet pipe (3) increases the wastewater flow until h equals H. Then the electric control valve in the gas transmission pipe (9) resumes normal ozone emission, the water inlet pipe (3) stops flowing wastewater, and the stirring assembly (11) is turned on. After a period of stirring and mixing, the electric control valve in the connecting pipe (4) and the electric control valve in the water inlet pipe (3) are turned on in sequence. S4-22: When h is less than H and less than L but greater than l, close the electric control valve on the air supply pipe (9) connected to the aeration head (10) opposite to the lower half of the stirring blade (12), reduce the electric control valve on the air supply pipe (9) connected to the aeration head (10) below the stirring blade (12), control the rotary motor (111) to reverse so that the ozone bubbles flow back, and at the same time increase the electric control valve on the water inlet pipe (3) to increase the wastewater flow into the reaction tank (2) until the wastewater volume in the reaction tank (2) reaches L, then adjust the electric control valve on the air supply pipe (9) connected to the aeration head (10) below the stirring blade (12) back until the water level reaches H, and the ozone output of the aeration head (10) returns to normal. S4-23: When h is less than H and less than l, the stirring assembly (11) stops and the electric control valve in the gas supply pipe (9) is closed to stop the ozone input. The water inlet pipe (3) also needs to be increased until h reaches L. The wastewater treatment operating system starts the stirring assembly (11) to stir, opens and controls the electric control valve in the gas supply pipe (9) with a small amount of input to introduce ozone. Then, when the water level sensor detects that h has reached the value of H, the electric control valve on the water inlet pipe (3) is closed, and the electric control valve in the gas supply pipe (9) normally introduces ozone. After the stirring assembly (11) completes the full mixing, the electric control valve in the connecting pipe (4) and the electric control valve in the water inlet pipe (3) are opened in sequence. S4-3: When h is greater than H, reduce the power control valve in the connecting pipe (4) so ​​that the pre-treated wastewater slowly enters the electrocatalytic oxidation chamber (16) until the water level sensor detects that h is lower than H, then restore the normal flow rate of the power control valve in the inlet pipe (3) and the connecting pipe (4); S4-31: After the treatment of S4-3, if h is greater than H again within a period of time T, the electric control valve in the connecting pipe (4) is still reduced, and the continuous drive of the cleaning component (14) and the sludge scraping component (15) is controlled to treat the sediment in the reaction tank (2) until the water level sensor reports that the water level h is no longer frequently higher than H, and the cleaning component (14) and the sludge scraping component (15) resume normal drive frequency.

2. The method of using the industrial wastewater catalytic oxidation equipment according to claim 1, characterized in that, A buffer wall (131) is fixedly connected above the mounting base (13). The buffer wall (131) has an arc-shaped surface facing the center of the reaction tank (2) to guide the flow of wastewater and impurities.

3. The method of using the industrial wastewater catalytic oxidation equipment according to claim 2, characterized in that, The cleaning component (14) includes a rotating interface (141), which is movably connected above the bottom perforation of the reaction tank (2). A sludge scraping component (15) is welded to the outer wall of the rotating interface (141). A large bevel gear (142) is fitted on the outer wall of the rotating interface (141). A drive motor (143) is fixedly installed inside the mounting base (13). A small bevel gear (144) is connected to the drive motor (143), and the small bevel gear (144) meshes with the large bevel gear (142).

4. The method of using the industrial wastewater catalytic oxidation equipment according to claim 3, characterized in that, The mud scraping assembly (15) includes an electric push rod (151), which is riveted to the rotating interface (141) and has a waterproof outer shell welded to the rotating interface (141). A mud scraper (152) is installed at the end of the electric push rod (151), and the side of the mud scraper (152) has a trapezoidal structure.

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