Industrial wastewater catalytic oxidation equipment and use method thereof

Abstract

The invention discloses industrial wastewater catalytic oxidation equipment and a using method thereof.The industrial wastewater catalytic oxidation equipment comprises a supporting frame, a reaction barrel is installed in the center of the supporting frame, a water inlet pipe is installed on one side of the outer wall of the reaction barrel, a connecting pipe is installed on the other side of the outer wall of the reaction barrel, and a mud discharging pipe is fixedly connected to a penetrating hole in the bottom of the reaction barrel; a collecting box is connected to a pipe opening of the sludge discharging pipe, a shell is riveted to the top of the reaction barrel, a gas storage tank is installed above the supporting frame, a gas conveying pipe is connected to a tank opening of the gas storage tank, a pipe opening of the gas conveying pipe penetrates into a barrel body of the reaction barrel, an aeration head is installed at the pipe opening, and a stirring assembly penetrates through the center of the reaction barrel; a plurality of stirring blades are uniformly fixed on the stirring assembly, a mounting base is fixed in the reaction barrel, a cleaning assembly is mounted in the center of the mounting base, a mud scraping assembly is mounted on the cleaning assembly, and the device solves the problem that current wastewater treatment equipment is high in energy consumption, so that the wastewater treatment cost is high.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an industrial wastewater catalytic oxidation device and a use method thereof. Background Art

[0002] With the continuous enhancement of environmental awareness and the continuous advancement of environmental protection policies, more and more industrial enterprises have begun to adopt 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 such as high efficiency and no secondary pollution. Through catalytic oxidation technology, harmful substances in industrial wastewater can be quickly 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 methods to treat difficult-to-degrade wastewater, which can be divided into direct oxidation and indirect oxidation according to the method and type of oxidant generation. For ozone catalytic oxidation, the direct oxidation method is to directly oxidize difficult-to-degrade organic matter through the selective ozone molecules, and the indirect oxidation method is to completely oxidize difficult-to-degrade organic matter by producing hydroxyl radicals through catalytic ozone. For electrochemical oxidation, the direct oxidation method is that electrons directly oxidize difficult-to-degrade organic matter, and the indirect oxidation method is to completely oxidize difficult-to-degrade organic matter by producing hydroxyl radicals on the anode surface. However, whether it is ozone catalytic oxidation or electrocatalytic oxidation, when treating difficult-to-degrade wastewater, there is a problem of high energy consumption resulting in high wastewater treatment costs. This phenomenon has become a problem that needs to be solved urgently by people in this field. Summary of the invention

[0004] The purpose of the present invention is to provide an industrial wastewater catalytic oxidation device and a method of using the same in order to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an industrial wastewater catalytic oxidation device and a method for using the same, comprising a support frame, a reaction barrel is installed at the center of the support frame, the reaction barrel is a round barrel structure with holes on 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 mud discharge pipe is fixedly connected to the bottom perforation of the reaction barrel, a collection box is connected to the pipe mouth of the mud discharge pipe, and a shell is riveted to the top of the reaction barrel;

[0006] A gas storage tank is installed above the support frame, and a gas pipe is connected to the tank mouth of the gas storage tank. The gas pipe is a three-way pipe structure, wherein an input pipe is connected to the gas storage tank, and the other two output pipes are each installed with an electric control valve for controlling the gas flow of the two pipes. The two output pipes of the gas pipe are both inserted into the barrel body of the reaction barrel and an aeration head is installed at the pipe mouth to ensure that ozone is fully in contact with wastewater and improve the utilization rate of ozone. A stirring assembly is inserted in the center of the reaction barrel, and a number of stirring blades are evenly fixed on the stirring assembly;

[0007] A mounting base is fixed inside the reaction barrel, a cleaning component is installed in the center of the mounting base, and a mud scraping component is installed on the cleaning component;

[0008] An electrocatalytic oxidation chamber is provided on one side of the reaction barrel, and the reaction barrel and the electrocatalytic oxidation chamber are connected through the connecting pipe. A water outlet pipe is installed on one side of the electrocatalytic oxidation chamber, and an electric-controlled valve is installed in the water outlet pipe. The water outlet pipe and the connecting pipe are located on both sides of the electrocatalytic oxidation chamber.

[0009] According to the above technical solution, the stirring assembly includes 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, a first connecting rod and a second connecting rod are welded on opposite sides of the connecting block, the first connecting rod and the second connecting rod are both "L"-shaped rod body structures, a pipe is vertically penetrated on the shorter rod of the first connecting rod, a first driven gear is movably connected to the pipe, and a first stirring rod is penetrated in the center of the first driven gear;

[0010] A second stirring rod is inserted into the shorter rod of the second connecting rod, and the second stirring rod is sleeved on the outside 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 teeth of the first driven gear.

[0011] According to the above technical solution, the driving gear is meshed with the first driven gear and the second driven gear respectively, and a plurality of stirring blades are uniformly welded on the first stirring rod and the second stirring rod.

[0012] According to the above technical solution, a buffer wall is fixedly connected to the top of the mounting base, and the buffer wall has an arc-shaped surface facing the center of the reaction barrel to guide the flow of wastewater and impurities.

[0013] According to the above technical solution, the cleaning assembly includes a rotating interface, which is movably connected above the bottom perforation of the reaction barrel, and a mud scraping assembly is welded on the outer wall of the rotating interface, a large bevel gear is sleeved on the outer wall of the rotating interface, and a driving motor is fixedly installed inside the mounting base, a small bevel gear is connected to the driving motor, and the small bevel gear is meshed with the large bevel gear.

[0014] According to the above technical solution, the scraper assembly includes an electric push rod, which is riveted to the rotating interface and has a waterproof shell on its outside welded to the rotating interface. A scraper plate is installed at the end of the electric push rod, and the side of the scraper plate has a trapezoidal structure.

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

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

[0017] S1: Connect the wastewater pipeline to the water inlet pipe so that the wastewater flows 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 pipeline is opened to allow the ozone in the gas storage tank to flow into the reaction barrel, and the stirring component is started to cause the wastewater to undergo ozone catalytic oxidation reaction to obtain preliminary treated wastewater;

[0019] S3: Turn on the cleaning component and the scraping component, and make them perform periodic motion through the system settings. Intermittent operation continuously scrapes the sediment at the bottom of the reaction barrel. The cleaned sediment will flow into the collection box through the mud discharge pipe;

[0020] S4: Set the maximum threshold of the wastewater volume in the reaction barrel to H, the actual volume of wastewater reflected by the water level sensor in the reaction barrel to h, the minimum stirring height of the stirring assembly to L, and open the electric control valve in the connecting pipe according to the wastewater situation in the reaction barrel;

[0021] S5: the wastewater enters the electrocatalytic oxidation chamber from the connecting pipe, that is, the preliminarily treated wastewater is added to the electrocatalytic oxidation device for electrocatalytic oxidation reaction to obtain treated wastewater;

[0022] S6: The treated wastewater that has completed the catalytic oxidation operation will be discharged from the outlet pipe.

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

[0024] S4-1: When h is equal to H, the electric control valve in the connecting pipe is opened normally, so that the wastewater after ozone catalytic oxidation enters the electrocatalytic oxidation chamber;

[0025] S4-2: When h is less than H, further partitioning is required;

[0026] S4-21: When h is less than H and greater than L, the electric control valve in the gas pipe reduces ozone emission, and the electric control valve in the water inlet pipe increases the amount of wastewater introduced, until h is equal to H, the electric control valve in the gas pipe restores normal ozone emission, stops introducing wastewater into the water inlet pipe, turns on the stirring assembly, and after a period of stirring and mixing, turns on the electric control valve in the connecting pipe and the electric control valve in the water inlet pipe in turn;

[0027] S4-22: When h is less than H and less than L but greater than l, close the electric control valve on the air pipe connected to the aeration head opposite to the lower half of the stirring blade, reduce the electric control valve on the air pipe connected to the aeration head below the stirring blade, control the rotary motor to reverse so that the ozone bubbles flow back, and at the same time increase the electric control valve on the water inlet pipe to increase the amount of wastewater entering the reaction barrel until the amount of wastewater in the reaction barrel reaches L, and then adjust the electric control valve on the air pipe connected to the aeration head below the stirring blade until the water level reaches H, and the ozone output of the aeration head returns to normal;

[0028] S4-23: When h is less than H and less than l, the stirring component stops and the electric control valve in the air pipe is closed to stop the input of ozone, and the water inlet pipe also needs to be increased until h reaches L, the wastewater treatment operating system starts the stirring component for stirring, opens and controls the electric control valve in the air pipe with a smaller input, and introduces ozone, and then until the water level sensor detects that h reaches the H value, the electric control valve on the water inlet pipe is closed, and the electric control valve in the air pipe normally introduces ozone, and after the stirring component completes sufficient mixing, the electric control valve in the connecting pipe and the electric control valve in the water inlet pipe are opened in sequence;

[0029] S4-3: When h is greater than H, the electric control valve in the connecting pipe is adjusted to a smaller value, so that the preliminarily treated wastewater slowly enters the electrocatalytic oxidation chamber until the water level sensor detects that h is lower than H, and then the normal flow of the electric control valve in the water inlet pipe and 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 electric control valve in the connecting pipe is still adjusted down, and the continuous driving of the cleaning component and the scraper component is controlled to process the sediment in the reaction barrel, until the water level sensor feedback shows that the water level h is no longer frequently higher than H, and the cleaning component and the scraper component resume normal driving frequency.

[0031] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0032] (1) The wastewater and ozone are fully stirred and mixed by providing a stirring component, thereby generating a staggered vortex flow, which helps to break large bubbles and increase the gas-liquid contact area, thereby improving the dissolution rate and oxidation effect of ozone;

[0033] (2) By arranging a cleaning component and a sludge scraping component to collaboratively process sediment, all-round sediment removal is achieved, which greatly improves the treatment efficiency and provides a stable guarantee for the continuous treatment of wastewater to a large extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0036] Figure 2 Schematic diagram of the internal structure of a reaction barrel according to an embodiment of the present invention;

[0037] Figure 3 is a schematic structural diagram of the connection between the reaction barrel and the stirring assembly of an embodiment of the present invention;

[0038] Figure 4 is a schematic structural diagram of a stirring assembly according to an embodiment of the present invention;

[0039] Figure 5 is a schematic structural diagram of a cleaning component of an embodiment of the present invention;

[0040] Figure 6 is a schematic structural diagram of a mud scraper according to an embodiment of the present invention;

[0041] Figure 7 is a schematic structural diagram of a buffer wall according to an embodiment of the present invention;

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

[0043] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The embodiment of the present invention provides an industrial wastewater catalytic oxidation device and a method of using the same. Figure 1 FIG. 1 is a schematic diagram of the structure of an industrial wastewater catalytic oxidation device according to an embodiment of the present invention. Figure 1-3 As shown, the industrial wastewater catalytic oxidation equipment includes a support frame 1, a reaction barrel 2 is installed in the center of the support frame 1, the reaction barrel 2 is a cylindrical structure with perforations on the top and the bottom, a water level sensor is installed inside the reaction barrel 2, a water inlet pipe 3 is installed on one side of the outer wall of the reaction barrel 2, an electric-controlled 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 barrel 2, an electric-controlled valve is installed in the connecting pipe 4, a mud discharge pipe 5 is fixedly connected to the bottom perforation of the reaction barrel 2, an electric-controlled valve is installed in the mud discharge pipe 5, a collecting box 6 is connected to the pipe mouth of the mud discharge pipe 5, and a shell 7 is riveted to the top of the reaction barrel 2.

[0045] A gas storage tank 8 is installed above the support frame 1, and a gas pipe 9 is connected to the tank mouth of the gas storage tank 8. The gas pipe 9 is a three-way pipe structure, in which the input pipe is connected to the gas storage tank 8, and the other two output pipes are installed with electric control valves to control the gas flow of the two pipes. The two output pipes of the gas pipe 9 are both inserted into the barrel body of the reaction barrel 2 and an aeration head 10 is installed at the pipe mouth to ensure that ozone is fully in contact with wastewater. The two aeration heads 10 are installed in opposite directions in the reaction barrel 2. A stirring component 11 is inserted in the center of the reaction barrel 2, and a number of stirring blades 12 are evenly fixed on the stirring component 11. The vertical direction of the two aeration heads 10 is distributed up and down, and one of the aeration heads 10 is located below the stirring blade 12, so that the bubbles have more opportunities to contact the stirring blade 12 during the rising process. The other aeration head 10 is opposite to the lower half of the center of the stirring blade 12, so as to ensure that there are enough bubbles distributed in the entire reaction barrel and improve the overall oxidation efficiency. (Since the installation heights of the two aeration heads 10 are different, it is necessary to determine the flow rates of the two aeration heads 10 by debugging the electric control valve so as to maximize the overall gas-liquid contact area.)

[0046] A mounting base 13 is fixed inside the reaction barrel 2 , a cleaning assembly 14 is installed at the center of the mounting base 13 , and a mud scraping assembly 15 is installed on the cleaning assembly 14 .

[0047] An electrocatalytic oxidation chamber 16 is provided on one side of the reaction barrel 2, and the reaction barrel 2 and the electrocatalytic oxidation chamber 16 are connected through the connecting pipe 4. A water outlet pipe 17 is installed on one side of the electrocatalytic oxidation chamber 16, and an electric-controlled 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.

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

[0049] Wastewater enters the reaction barrel 2 from the water inlet pipe 3, and at the same time, the air pipe 9 is opened to introduce ozone in the gas tank 8 into the reaction barrel 2. The ozone reaches the aeration head 10 through the air pipe 9 and is fully integrated into the wastewater through the aeration head 10. Then, the stirring component 11 is started to stir the wastewater so that the ozone is mixed with the wastewater to remove most of the easily oxidizable organic matter in the wastewater, thereby reducing the burden of subsequent electrocatalytic oxidation. At the same time, part of the impurities sink to the bottom of the reaction barrel 2, are cleaned by the cleaning component 14, and are scraped off by the mud scraping component 15. The scraped sediment falls into the collection box 6 through the mud discharge pipe 5. The collection box 6 needs Regular cleaning is required. Since the position of the mud discharge pipe 5 is lower than the height of the connecting pipe 4 (the outlet of the preliminary treatment wastewater) and an electric control valve is installed in the mud discharge pipe 5, the heavier sediment settles to the bottom of the reaction barrel 2 under the action of gravity and is discharged through the mud discharge pipe 5, while the treated oxidized wastewater is discharged through the oxidized wastewater outlet located at a higher position. The wastewater enters the electrocatalytic oxidation chamber 16 through the connecting pipe 4, undergoes electrocatalytic oxidation, and is finally discharged from the outlet pipe 17. The wastewater that has been preliminarily treated enters the electrocatalytic oxidation stage, at which time the wastewater no longer needs to pass through the airflow to increase the gas-liquid contact area. This means that in the electrocatalytic oxidation process, the presence of airflow is not required, thereby avoiding the influence of airflow on mass transfer efficiency and improving the overall effect of wastewater treatment.

[0050] In some preferred embodiments, the stirring assembly 11 includes a rotating motor 111, which is riveted to the inner wall of the outer shell 7. A driving rod 112 is connected to the rotating motor 111, and a driving gear 113 is sleeved on the end of the driving rod 112. A connecting block is sleeved on the driving rod 112 and located between the rotating motor 111 and the driving gear 113. A first connecting rod 114 and a second connecting rod 118 are welded on opposite sides of the connecting block. The first connecting rod 114 and the second connecting rod 118 are both "L"-shaped rod structures. A pipe 115 is vertically penetrated on the shorter rod of the first connecting rod 114, and a first driven gear 116 is movably connected to the pipe 115. A first stirring rod 117 is penetrated in the center of the first driven gear 116. The second stirring rod 1110 is pierced through the shorter rod of the second connecting rod 118, and the second stirring rod 1110 is sleeved on the outside of the first stirring rod 117. The second stirring rod 1110 is sleeved with a second driven gear 119, and the second driven gear 119 is located above the second connecting rod 118 and opposite to the gear teeth of the first driven gear 116. After the wastewater treatment operating system turns on the stirring assembly 11, the rotating motor 111 is driven, and the rotation of the driving rod 112 will drive the driving gear 113 to rotate, thereby achieving the driving effect.

[0051] In some preferred embodiments, the driving gear 113 is meshed 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. After the driving gear 113 rotates, it 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 relatively arranged, their rotation directions are opposite, and then the first stirring rod 117 and the second stirring rod 1110 rotate in the opposite direction. Through this assembly, a staggered vortex flow can be generated, which helps to break large bubbles and increase the gas-liquid contact area, thereby improving the dissolution rate and oxidation effect of ozone.

[0052] In some optional embodiments, when the wastewater level is set to be normal, the first stirring rod 117 rotates counterclockwise and the second stirring rod 1110 rotates clockwise. At this time, a greater shear force can be generated, which helps to break up the aggregation of ozone bubbles, promote gas-liquid contact, and improve dissolution efficiency.

[0053] In certain preferred embodiments, Figure 7 As shown, a buffer wall 131 is fixedly connected to the top of the mounting base 13. The buffer wall 131 is in an arc-shaped surface facing the center of the reaction barrel 2, guiding the flow of wastewater and impurities so that they flow more smoothly to the bottom of the reaction barrel 2, while reducing the dead corner area on the inner wall of the reaction barrel 2, making it easier to scrape or rinse off impurities, thereby simplifying maintenance and cleaning work and better achieving the continuous processing effect of the equipment.

[0054] In certain preferred embodiments, Figure 5 As shown, the cleaning assembly 14 includes a rotating interface 141, which is movably connected to the bottom perforation of the reaction barrel 2, and a scraping assembly 15 is welded on the outer wall of the rotating interface 141, and a large bevel gear 142 is sleeved on the outer wall of the rotating interface 141. A driving motor 143 is fixedly installed inside the mounting base 13, and a small bevel gear 144 is connected to the driving motor 143, and the small bevel gear 144 is meshed with the large bevel gear 142. When the sediment at the bottom of the reaction barrel 2 needs to be processed, the cleaning assembly 14 is started, and the driving motor 143 is started at this time, and the small bevel gear 144 is driven to rotate. Since the small bevel gear 144 is meshed with the large bevel gear 142, the small bevel gear 144 rotates and drives the large bevel gear 142 to rotate, and then the rotating interface 141 is driven to rotate through the large bevel gear 142, and finally the scraping effect of the scraping assembly 15 at the bottom of the reaction barrel 2 is achieved, and the sediment adsorbed thereon is scraped off.

[0055] In certain preferred embodiments, Figure 6 , 7 As shown, the scraper assembly 15 includes an electric push rod 151, which is riveted to the rotating interface 141, and a waterproof shell is provided on the outer side thereof and welded to the rotating interface 141, and a scraper blade 152 is installed at the end of the electric push rod 151. Figure 6 As shown, the side of the scraper 152 is a trapezoidal structure. When the scraper 152 is linearly displaced along the electric push rod 151, the sediment on the path will be shoveled up by the inclined surface of the displacement direction of the scraper 152 to the top of the bottom of the reaction barrel 2, so that it will be separated from the bottom surface of the reaction barrel 2, thereby greatly reducing the residual sediment at the bottom of the reaction barrel 2, and the shoveled sediment will flow along the buffer wall 131 and return to the bottom of the reaction barrel 2 without entering the stirring area above it, avoiding the mixing of impurities and increasing the wear of mechanical parts.

[0056] In some optional embodiments, the movement trajectory of the scraper assembly 15 is as follows: the scraper blade 152 rotates around the bottom center of the reaction barrel 2 under the action of the cleaning assembly 14, and moves back and forth along the linear direction of the electric push rod 151 under the action of the electric push rod 151, so that the scraper blade 152 can scrape off the sediment within the path range of the electric push rod 151 while rotating, and the cleaning of all sediments within the bottom range of the reaction barrel 2 is achieved through the joint driving of the two, and the scraped sediments will be discharged through the mud discharge pipe 5 and then collected by the collection box 6. In general, the scraper assembly 15 and the cleaning assembly 14 are driven within a set time interval to perform regular sediment cleaning, thereby ensuring continuous treatment of wastewater.

[0057] In some optional embodiments, in order to achieve continuous wastewater treatment, the wastewater treatment operating system needs to control the wastewater volume, sediment conditions and ozone concentration in the reaction barrel 2 in real time.

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

[0059] When h is equal to H, it indicates that the amount of wastewater in the reaction barrel 2 is at a normal value, and after being evenly mixed with the ozone input from the gas tank 8 through the gas pipe 9 through the stirring assembly 11, a catalytic oxidation reaction is completed to obtain preliminary treated wastewater, which then enters the electrocatalytic oxidation chamber 16 through the connecting pipe 4 for an electrocatalytic oxidation reaction to obtain treated wastewater.

[0060] When h is less than H, it means that the amount of wastewater in the reaction barrel 2 is small. If the water level sensor detects that h is greater than L, the wastewater treatment operating system will first reduce the electric control valve in the gas pipe 9 on the gas storage tank 8 to reduce the ozone input and avoid excessive ozone concentration in the reaction barrel 2, which will produce strong oxidation and even cause equipment corrosion. After that, the wastewater treatment operating system will increase the electric control valve on the water inlet pipe 3 to increase the amount of wastewater input to the reaction barrel 2 until the amount of wastewater in the reaction barrel 2 reaches H, at which time the electric control valve in the gas pipe 9 will resume normal ozone input.

[0061] Under the condition that h is less than H, if the water level sensor detects that h is less than L but greater than l, it means that only the first stirring rod 117 can achieve the stirring effect. At this time, the system will close the electric control valve on the air pipe 9 connected to the aeration head 10 opposite to the lower half of the stirring blade 12 to prevent ozone from escaping from the water surface without being dissolved, causing waste of ozone and reducing the effective amount of ozone that can be used to oxidize harmful substances in the wastewater. At the same time, the electric control valve on the air pipe 9 connected to the aeration head 10 located below the stirring blade 12 is adjusted down to prevent more ozone bubbles from being crushed too late, which also causes pollution and waste. At this time, it is necessary to control the rotary motor 111 to reverse, so that the first stirring rod 117 rotates clockwise, so that the ozone bubbles flow back. In the case of backflow, the relative movement speed of the bubbles and the wastewater is large, which can extend the contact time between the bubbles and the wastewater, thereby increasing the gas-liquid contact area and the decomposition time of the ozone. At the same time, the electric control valve on the water inlet pipe 3 is adjusted to increase the amount of wastewater entering the reaction barrel 2 until the amount of wastewater in the reaction barrel 2 reaches L, and then the electric control valve on the air pipe 9 connected to the aeration head 10 located 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.

[0062] Under the above condition that h is less than H, if the water level sensor detects that h is less than l at this time, it means that the amount of wastewater at this time is too low and is not suitable for operation. At this time, the stirring component 11 stops and the electric control valve in the air pipe 9 is closed to stop the input of ozone. The electric control valve in the connecting pipe 4 is closed synchronously, and it is also necessary to increase the water inlet pipe 3 so that a large amount of wastewater is passed into the reaction barrel 2 for treatment. Until it is detected that the wastewater height reaches L, the wastewater treatment operating system starts the stirring component 11 for stirring, opens and controls the electric control valve in the air pipe 9 with a smaller amount of input, and introduces ozone until the water level sensor detects that h reaches the H value. The electric control valve on the water inlet pipe 3 is closed, and the electric control valve in the air pipe 9 normally introduces ozone. After sufficient mixing is completed through the stirring component 11, the electric control valve in the connecting pipe 4 and the electric control valve in the water inlet pipe 3 are opened in sequence.

[0063] When h is greater than H, it means that the amount of wastewater in the reaction barrel 2 is large. In order to prevent backflow, the electric control valve in the water inlet pipe 3 needs to be closed. At the same time, in order to prevent the untreated wastewater from directly entering the electrocatalytic oxidation chamber 16, the electric control valve in the connecting pipe 4 needs to be adjusted down so that the wastewater slowly enters the electrocatalytic oxidation chamber 16. When 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-mentioned regulation, h is lower than H, and within a period of time T, the situation where h is greater than H appears again, it means that there is too much sediment in the reaction barrel 2 at this time, occupying a large volume of the reaction barrel 2, resulting in frequent water level over-high in the reaction barrel 2. At this time, the wastewater treatment operating system will control the continuous driving of the cleaning component 14 and the mud scraping component 15, that is, the mud scraping plate 152 rotates continuously around the bottom center of the reaction barrel 2 under the action of the cleaning component 14, and continuously moves back and forth along the straight line direction of the electric push rod 151 under the action of the electric push rod 151. The scraped sediment will be discharged through the mud discharge pipe 5 and then collected by the collection box 6. After a period of continuous cleaning, a large amount of sediment in the reaction barrel 2 is processed until the water level sensor feedbacks that the water level h is no longer frequently higher than H, and the cleaning component 14 and the mud scraping component 15 resume normal driving frequency.

[0065] The method for using the industrial wastewater catalytic oxidation equipment is as follows:

[0066] S1: Connect the wastewater pipeline to the water inlet pipe 3 so that the wastewater flows into the reaction barrel 2;

[0067] S2: When the water level sensor detects that the wastewater level reaches H, the electric control valve in the gas pipe 9 is opened to allow the ozone in the gas storage tank 8 to flow into the reaction barrel 2, and the stirring component 11 is started to cause the wastewater to undergo ozone catalytic oxidation reaction to obtain preliminarily treated wastewater;

[0068] S3: Turn on the cleaning component 14 and the scraping component 15, and make them perform periodic motion through the system setting, and intermittently operate to continuously scrape off the sediment at the bottom of the reaction barrel 2, and the cleaned sediment will enter the collection box 6 along the mud discharge pipe 5;

[0069] S4: Set the maximum threshold of the wastewater volume in the reaction barrel 2 to H, the actual volume of wastewater reflected by the water level sensor in the reaction barrel 2 to h, the minimum stirring height of the stirring assembly 11 to L, and open the electric control valve in the connecting pipe 4 according to the wastewater situation in the reaction barrel 2;

[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 electrocatalytic oxidation chamber 16;

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

[0072] S4-21: When h is less than H and greater than L, the electric control valve in the gas pipe 9 reduces ozone emission, and the electric control valve in the water inlet pipe 3 increases the amount of wastewater introduced, until h is equal to H, the electric control valve in the gas pipe 9 restores normal ozone emission, the water inlet pipe 3 stops introducing wastewater, the stirring assembly 11 is turned on for a period of stirring and mixing, and then 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;

[0073] S4-22: When h is less than H and less than L but greater than l, close the electric control valve on the air pipe 9 connected to the aeration head 10 opposite to the lower half of the stirring blade 12, and reduce the electric control valve on the air 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. At the same time, increase the electric control valve on the water inlet pipe 3 to increase the amount of wastewater entering the reaction barrel 2 until the amount of wastewater in the reaction barrel 2 reaches L, and then adjust the electric control valve on the air pipe 9 connected to the aeration head 10 below the stirring blade 12 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 component 11 stops and the electric control valve in the air 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 operating system starts the stirring component 11 for stirring, opens and controls the electric control valve in the air pipe 9 with a smaller input, and introduces ozone, and then until the water level sensor detects that h reaches the H value, the electric control valve on the water inlet pipe 3 is closed, and the electric control valve in the air pipe 9 normally introduces ozone, and after sufficient mixing is completed by the stirring component 11, the electric control valve in the connecting pipe 4 and the electric control valve in the water inlet pipe 3 are opened in sequence;

[0075] S4-3: When h is greater than H, the electric control valve in the connecting pipe 4 is adjusted down so that the preliminarily treated wastewater slowly enters the electrocatalytic oxidation chamber 16. When 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;

[0076] S4-31: After the processing 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 adjusted down, and the continuous driving of the cleaning component 14 and the scraping component 15 is controlled, so as to process the sediment in the reaction barrel 2, until the water level sensor feedback shows that the water level h is no longer frequently higher than H, and the cleaning component 14 and the scraping component 15 resume the normal driving frequency;

[0077] S5: the wastewater enters the electrocatalytic oxidation chamber 16 from the connecting pipe 4, that is, the preliminarily treated wastewater is added to the electrocatalytic oxidation device for electrocatalytic oxidation reaction to obtain treated wastewater;

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

[0079] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0080] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An industrial wastewater catalytic oxidation device, comprising a support frame (1), characterized in that: A reaction barrel (2) is installed in the center of the support frame (1). The reaction barrel (2) is a cylindrical structure with holes on the top and the bottom. A water level sensor is installed inside the reaction barrel (2). A water inlet pipe (3) is installed on one side of the outer wall of the reaction barrel (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 barrel (2). An electric control valve is installed in the connecting pipe (4). A mud discharge pipe (5) is fixedly connected to the bottom hole of the reaction barrel (2). A collection box (6) is connected to the pipe mouth of the mud discharge pipe (5). A shell (7) is riveted to the top of the reaction barrel (2); A gas storage tank (8) is installed above the support frame (1), and a gas delivery pipe (9) is connected to the tank opening of the gas storage tank (8). The gas delivery pipe (9) is a three-way pipe structure, wherein an input pipe is connected to the gas storage tank (8), and the other two output pipes are each installed with an electric control valve for controlling the gas delivery flow of the two pipes. The two output pipes of the gas delivery pipe (9) are both inserted into the barrel body of the reaction barrel (2) and an aeration head (10) is installed at the pipe opening to ensure that ozone is fully in contact with wastewater and improve the utilization rate of ozone. A stirring component (11) is inserted in the center of the reaction barrel (2), and a plurality of stirring blades (12) are evenly fixed on the stirring component (11); A mounting base (13) is fixed inside the reaction barrel (2), a cleaning assembly (14) is installed at the center of the mounting base (13), and a mud scraping assembly (15) is installed on the cleaning assembly (14); An electrocatalytic oxidation chamber (16) is provided on one side of the reaction barrel (2), and the reaction barrel (2) and the electrocatalytic oxidation chamber (16) are connected via 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).

2. The industrial wastewater catalytic oxidation equipment according to claim 1, characterized in that: The stirring assembly (11) comprises a rotating motor (111), the rotating motor (111) is riveted to the inner wall of the housing (7), a driving rod (112) is connected to the rotating motor (111), a driving gear (113) is sleeved on the end of the driving rod (112), a connecting block is sleeved on the driving rod (112) and located between the rotating motor (111) and the driving gear (113), a first connecting rod (114) and a second connecting rod (118) are welded on opposite sides of the connecting block, the first connecting rod (114) and the second connecting rod (118) are both "L"-shaped rod structures, a pipe (115) is vertically penetrated on 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 penetrated in the center of the first driven gear (116); A second stirring rod (1110) is inserted into the shorter rod of the second connecting rod (118), and the second stirring rod (1110) is sleeved on the outer side of the first stirring rod (117). A second driven gear (119) is sleeved on the second stirring rod (1110), and the second driven gear (119) is located above the second connecting rod (118) and opposite to the gear teeth of the first driven gear (116).

3. The industrial wastewater catalytic oxidation equipment according to claim 2, characterized in that: The driving gear (113) is meshed 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).

4. The industrial wastewater catalytic oxidation equipment according to claim 3, characterized in that: A buffer wall (131) is fixedly connected above the mounting base (13), and the buffer wall (131) is in an arc-shaped surface facing the center of the reaction barrel (2) to guide the flow of waste water and impurities.

5. The industrial wastewater catalytic oxidation equipment according to claim 4, characterized in that: The cleaning assembly (14) comprises a rotating interface (141), the rotating interface (141) is movably connected to the bottom through hole of the reaction barrel (2), and 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 inside the mounting base (13), a small bevel gear (144) is connected to the driving motor (143), and the small bevel gear (144) is meshed with the large bevel gear (142).

6. The industrial wastewater catalytic oxidation equipment according to claim 5, characterized in that: The mud scraping assembly (15) comprises an electric push rod (151), the electric push rod (151) is riveted to the rotating interface (141), and a waterproof shell is arranged on the outside of the electric push rod and welded to the rotating interface (141), and a mud scraping plate (152) is installed at the end of the electric push rod (151), and the side surface of the mud scraping plate (152) is a trapezoidal structure.

7. The industrial wastewater catalytic oxidation equipment according to claim 6, characterized in that: The following steps are involved: The maximum threshold of the amount of wastewater in the reaction barrel (2) is set to H, the actual amount of wastewater reflected by the water level sensor in the reaction barrel (2) is set to h, the stirring height of the first stirring rod (117) is set to L, and the lowest stirring water level height of the stirring assembly (11) is set to l; S1: Connecting the wastewater pipeline to the water inlet pipe (3) so that the wastewater flows into the reaction barrel (2); S2: When the water level sensor detects that the wastewater level has reached H, the electric control valve in the gas transmission pipe (9) is opened to allow the ozone in the gas storage tank (8) to flow into the reaction barrel (2), and the stirring component (11) is started to cause the wastewater to undergo an ozone catalytic oxidation reaction to obtain preliminarily treated wastewater; S3: Turn on the cleaning component (14) and the scraping component (15), and make them perform periodic motion through the system setting, and intermittently operate to continuously scrape off the sediment at the bottom of the reaction barrel (2), and the cleaned sediment will flow into the collection box (6) along the mud discharge pipe (5); S4: setting the maximum threshold of the amount of wastewater in the reaction barrel (2) to H, the actual amount of wastewater reflected by the water level sensor in the reaction barrel (2) to h, the minimum stirring height of the stirring assembly (11) to L, and opening the electric control valve in the connecting pipe (4) according to the wastewater situation in the reaction barrel (2); S5: the wastewater enters the electrocatalytic oxidation chamber (16) from the connecting pipe (4), i.e. the preliminarily treated wastewater is added to the electrocatalytic oxidation device for electrocatalytic oxidation reaction to obtain treated wastewater; S6: The treated wastewater after the catalytic oxidation operation is discharged from the outlet pipe (17).

8. The industrial wastewater catalytic oxidation equipment according to claim 7, characterized in that: The step S4 comprises the following steps: 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 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 pipe (9) reduces ozone emission, and the electric control valve in the water inlet pipe (3) increases the amount of wastewater introduced, until h is equal to H, the electric control valve in the gas pipe (9) restores normal ozone emission, stops introducing wastewater into the water inlet pipe (3), opens the stirring assembly (11), and after a period of stirring and mixing, opens the electric control valve in the connecting pipe (4) and the electric control valve in the water inlet pipe (3) 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 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 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 amount of wastewater entering the reaction barrel (2), until the amount of wastewater in the reaction barrel (2) reaches L, and then return the electric control valve on the air pipe (9) connected to the aeration head (10) below the stirring blade (12) 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 component (11) stops and the electric control valve in the air pipe (9) is closed to stop the input of ozone. It is also necessary to increase the water inlet pipe (3) until h reaches L. The wastewater treatment operating system starts the stirring component (11) for stirring, opens and controls the electric control valve in the air pipe (9) for a smaller amount of input, and introduces ozone. When the water level sensor detects that h reaches the value H, the electric control valve on the water inlet pipe (3) is closed, and the electric control valve in the air pipe (9) allows ozone to be introduced normally. After sufficient mixing is completed through the stirring component (11), 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, the electric control valve in the connecting pipe (4) is adjusted to a smaller value, so that the preliminarily treated wastewater slowly enters the electrocatalytic oxidation chamber (16), until the water level sensor detects that h is lower than H, and then the normal flow of the electric control valve in the water inlet pipe (3) and the connecting pipe (4) is restored; S4-31: After the processing of S4-3, if the situation where h is greater than H appears again within a period of time T, the electric control valve in the connecting pipe (4) is still adjusted down, and the continuous driving of the cleaning component (14) and the scraping component (15) is controlled at the same time, so as to process the sediment in the reaction barrel (2) until the water level sensor feedback shows that the water level h is no longer frequently higher than H, and the cleaning component (14) and the scraping component (15) resume the normal driving frequency.

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