CN112225308B - Device and method for treating biotoxic wastewater based on ozone oxidation technology - Google Patents
Device and method for treating biotoxic wastewater based on ozone oxidation technology Download PDFInfo
- Publication number
- CN112225308B CN112225308B CN202011070738.7A CN202011070738A CN112225308B CN 112225308 B CN112225308 B CN 112225308B CN 202011070738 A CN202011070738 A CN 202011070738A CN 112225308 B CN112225308 B CN 112225308B
- Authority
- CN
- China
- Prior art keywords
- cavity
- water outlet
- pipeline
- wastewater
- ozone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a device and a method for treating biotoxic wastewater based on an ozone oxidation technology, wherein the device comprises the following steps: the reactor provides a reaction site for the biological toxic wastewater, and the wastewater treated by the reactor enters a biochemical system for biodegradation treatment; and the detecting instruments are respectively arranged in the reactor, on the wastewater inlet pipeline and the circulating water outlet pipeline. The invention organically combines a biochemical method with low operation cost and intensified ozone oxidation, selectively oxidizes unsaturated bonds through ozone oxidation to further destroy the molecular structure of organic matters, has low ozone consumption, can realize toxic degradation, and enters a biochemical system for biodegradation treatment after wastewater has no biological toxicity.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a device and a method for treating biotoxic wastewater based on an ozone oxidation technology.
Background
The biochemical method of waste water is a method for degrading organic pollutants by utilizing the metabolism of microorganisms, and the method is widely applied to the field of waste water treatment because of low operation cost. But for biologically toxic waste water, the method will not work. The existing method for treating the biologically toxic wastewater mainly adopts a chemical oxidation mode for degradation, such as a Fenton method, an ozone oxidation mode and other advanced oxidation modes. The Fenton method and the oxidation effectively degrade organic pollutants by generating strong oxidizing hydroxyl radicals, but have great limitation on treating high-concentration biotoxic wastewater, for example, the Fenton method can generate a large amount of iron mud to form secondary pollution, although ozone oxidation has no secondary pollution problem, the high-concentration biotoxic wastewater is treated to reach the standard and is discharged, the ozone consumption is too large, and the operation cost is high. Therefore, how to design a device for biologically toxic wastewater to effectively treat high-concentration biologically toxic wastewater and control the operation cost is a problem to be solved urgently at present.
Disclosure of Invention
In order to solve the technical problem, the invention discloses a device and a method for treating biotoxic wastewater based on an ozone oxidation technology, wherein a biochemical method with low operation cost is organically combined with intensified ozone oxidation, unsaturated bonds are selectively oxidized by the ozone oxidation to further break the molecular structure of organic matters, the consumption of ozone is low, the toxic degradation can be realized, and after the wastewater has no biotoxicity, the wastewater enters a biochemical system for biodegradation treatment; it includes:
the reactor provides a reaction site for the biological toxic wastewater, and the wastewater treated by the reactor enters a biochemical system for biodegradation treatment;
and the detecting instruments are respectively arranged in the reactor, on the wastewater inlet pipeline and the circulating water outlet pipeline.
Preferably, the reactor comprises:
a tank body which is provided with a plurality of tanks,
the reaction cavity is arranged inside the tank body;
the water inlet is arranged at the bottom end of the tank body and is communicated with the inside of the reaction cavity, and the water inlet is connected with a wastewater inlet pipeline;
the water outlet is arranged above the side end of the tank body and is communicated with the inside of the reaction cavity, and the water outlet is connected with the inlet end of a circulating water outlet pipeline;
the circulating water outlet is arranged at the position below the side end of the tank body and is communicated with the inside of the reaction cavity, and the circulating water outlet is connected with the outlet end of a circulating water outlet pipeline;
the air inlet is arranged at the position below the side end of the tank body and is communicated with the inside of the reaction cavity;
and the gas outlet is arranged at the top end of the tank body and communicated with the inside of the reaction cavity.
Preferably, the reaction cavity is divided into a first reaction area and a second reaction area by a baffle plate, the tops of the first reaction area and the second reaction area are communicated, the first reaction area is communicated with the water inlet and the air inlet, and the second reaction area is communicated with the water outlet and the circulating water outlet; the first reaction zones are internally and alternately provided with a plurality of first catalyst layers, baffle plates are arranged between the adjacent first catalyst layers, the second reaction zones are internally and alternately provided with a plurality of second catalyst layers, and the height of each baffle plate is greater than that of the water outlet.
Preferably, the apparatus for treating biologically toxic wastewater based on ozone oxidation technology further comprises: and the circulating pump is connected between the water outlet and the circulating water outlet through the circulating water outlet pipeline.
Preferably, the detection apparatus comprises:
the device comprises an ozone concentration detector, a COD detector and a biological toxicity detector, wherein the ozone concentration detector is arranged in the middle of the reaction cavity; the COD detector is arranged on the wastewater inlet pipeline; the biotoxicity detector is arranged on a circulating water outlet pipeline between the water outlet and the circulating pump.
Preferably, the water inlet quality condition of the reactor is that the COD value is 500-10000 mg/L, and the pH value is 5-7.
Preferably, the device for treating biotoxic wastewater based on ozone oxidation technology further comprises a sedimentation cleaning device, the sedimentation cleaning device is connected with the tank body, and the sedimentation cleaning device comprises:
two ends of the electric sliding table are respectively connected with the inner wall of the tank body and the baffle plate and are arranged close to the bottom end of the tank body;
the first motor is arranged on the outer wall of the tank body, the first motor and the electric sliding table are arranged in a position adaptive manner, the first motor is provided with a first output shaft and a second output shaft which rotate synchronously, and the first output shaft penetrates through the tank body and is connected with the input end of the electric sliding table;
the first belt wheel is arranged on the outer side of the tank body and is connected with the second output shaft;
the second motor is arranged on one side of the electric sliding table and is fixedly connected with the sliding block of the electric sliding table;
the first rotating shaft is connected with the output end of the second motor;
the fixing ring is connected to the outer side of the first rotating shaft through a connecting rod and is arranged in an arc shape;
the hairbrushes are uniformly connected to the outer sides of the fixing rings;
the sewage draining outlet is arranged at the bottom end of the tank body, and the height of the sewage draining outlet is lower than that of the water inlet.
Preferably, the sedimentation cleaning device further comprises a sedimentation collection device used in cooperation, and the sedimentation collection device comprises:
the machine body is fixedly connected to the outer wall of the bottom end of the tank body;
the first cavity is arranged at the top end of the machine body;
the second cavity is arranged below the first cavity;
the second rotating shaft vertically penetrates through the machine body, two ends of the second rotating shaft respectively extend into the first cavity and the second cavity, and the second rotating shaft is rotatably connected with the machine body;
the filtering rotary disc is arranged in the second cavity and is connected with the bottom end of the second rotating shaft;
the first pipeline is vertically arranged on the machine body, the inlet end of the first pipeline is connected with the sewage discharge outlet, and the outlet end of the first pipeline is communicated with the top end of the second cavity;
the second pipeline is vertically arranged on the machine body, the top end of the second pipeline is communicated with the bottom end of the second cavity, and the bottom end of the second pipeline penetrates through the machine body;
the water passing groove is formed in the machine body and is arranged above the filtering rotary disc and communicated with the side end of the second cavity;
the third cavity is arranged inside the machine body, is arranged outside the second cavity and is communicated with the water passing groove;
the collecting disc is horizontally arranged in the third cavity, the height of the collecting disc is lower than that of the filtering rotary disc, one end of the collecting disc is arranged in a clamping groove of the machine body close to the filtering rotary disc, the other end of the collecting disc penetrates through the machine body and extends outwards, and the collecting disc is connected with the machine body in a sliding mode;
a handle attached to an outside of the collection tray;
the collecting tank is arranged above the collecting tray;
the third pipeline is arranged on the machine body and is arranged below the second cavity, and two ends of the third pipeline are respectively communicated with the third cavity and the second pipeline;
the guide plate penetrates through the second cavity, the water passing groove and the third cavity, one end of the guide plate is fixedly connected with the inner wall of the third cavity, the other end of the guide plate extends to the center of the filtering rotary disc, and the bottom end of the guide plate is flush with the top end of the filtering rotary disc;
the first bevel gear is arranged in the first cavity and fixedly connected to the top end of the second rotating shaft;
the second bevel gear is arranged in the first cavity and is in meshed connection with the first bevel gear;
the fixed seat is arranged in the first cavity and is fixedly connected with the machine body;
the third rotating shaft horizontally penetrates through the fixed seat, is rotatably connected with the fixed seat, and is connected with the second bevel gear at one end;
the second belt wheel is connected to one end, far away from the second bevel gear, of the third rotating shaft, and the second belt wheel is connected with the first belt wheel through a belt.
Preferably, the method for treating the biological toxic wastewater based on the ozone oxidation technology regulates and controls the relationship between the ozone air inflow m and the inflow water COD value n as well as the ozone concentration c in the wastewater through a first control system, and the regulation and control method comprises the following steps:
when in use
When the ozone generator is used, the first control system adjusts the electromagnetic valve of the air inlet to increase the ozone air inflow m;
when in use
And when the ozone is exhausted, the first control system adjusts the electromagnetic valve of the air inlet to reduce the ozone air inflow m.
Preferably, in the method for treating the biotoxicity wastewater based on the ozone oxidation technology, the relationship between biotoxicity and the electromagnetic valves of the water inlet, the water outlet and the circulating water outlet is regulated and controlled by the second control system, and the regulation and control method comprises the following steps:
when the biotoxicity detector outputs a biotoxicity-free signal, the second control system adjusts the opening of the water inlet electromagnetic valve, the water outlet electromagnetic valve and the circulating water outlet electromagnetic valve;
when the biotoxicity detector outputs a biotoxicity signal, the second control system adjusts the water inlet electromagnetic valve, the water outlet electromagnetic valve and the circulating water outlet electromagnetic valve to be closed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the reactor structure of the present invention;
FIG. 3 is a schematic cross-sectional view of a sedimentation cleaning apparatus according to the present invention;
FIG. 4 is a schematic cross-sectional elevation view of a settling collection apparatus of the present invention;
figure 5 is a schematic top cross-sectional view of a sedimentation cleaning apparatus of the present invention.
In the figure: 1. a reactor; 3. a wastewater inlet pipe; 4. a circulating water outlet pipeline; 10. a tank body; 11. a reaction chamber; 12. a water inlet; 13. a water outlet; 14. a circulating water outlet; 15. an air inlet; 16. an air outlet; 111. a first reaction zone; 112. a second reaction zone; 113. a baffle plate; 114. a first catalyst layer; 115. a second catalyst layer; 116. a baffle plate; 5. a circulation pump; 21. an ozone concentration detector; a COD detector; 23. a biotoxicity detector; 61. an electric sliding table; 62. a first motor; 621. a first output shaft; 622. a second output shaft; 63. a first pulley; 64. a second motor; 65. a first rotating shaft; 66. a fixing ring; 67. a connecting rod; 68. a brush; 69. a sewage draining outlet; 70. a body; 71. a first cavity; 73. a second cavity; 74. a second rotating shaft; 75. a filter turntable; 76. a first conduit; 77. a second conduit; 78. passing through a water tank; 79. a third cavity; 710. a collection tray; 711. a handle; 712. collecting tank; 713. a third pipeline; 714. a guide plate; 715. a first bevel gear; 716. a second bevel gear; 717. a fixed seat; 718. a third rotating shaft; 719. a second pulley.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-5, the present embodiment provides an apparatus for treating biologically toxic wastewater based on ozone oxidation technology, which includes:
the reactor 1 provides a reaction site for the biological toxic wastewater, and the wastewater treated by the reactor 1 enters a biochemical system for biodegradation treatment;
and the detecting instruments are respectively arranged inside the reactor 1, on the wastewater inlet pipeline 3 and on the circulating water outlet pipeline 4.
The working principle and the beneficial effects of the invention are as follows:
the invention provides a device for treating biotoxicity wastewater based on an ozone oxidation technology, when in use, ozone passes through an air inlet 16, the wastewater enters a first reaction zone 111 of a reaction cavity 11 through a water inlet 12, the ozone is uniformly mixed in the wastewater through an ozone distributor, and is subjected to catalytic oxidation reaction with a first catalyst layer 114, then the wastewater enters a second reaction zone 112, and is subjected to catalytic oxidation reaction sequentially through a second catalyst layer 115 under the action of a baffle plate 116, the treated wastewater enters a circulating water outlet pipeline 4 through a water outlet 13, when a biotoxicity signal is detected by a biotoxicity detector 23, the wastewater returns to the reaction cavity 11 again under the action of a circulating pump 5, and when no biotoxicity signal is detected by the biotoxicity detector 23, the wastewater is discharged into a biochemical system for biodegradation treatment.
The invention organically combines a biochemical method with low operation cost and intensified ozone oxidation, selectively oxidizes unsaturated bonds through ozone oxidation to further destroy the molecular structure of organic matters, has low ozone consumption, can realize toxic degradation, and enters a biochemical system for biodegradation treatment after wastewater has no biological toxicity.
As shown in fig. 2, in one embodiment, the reactor 1 comprises:
the can body 10 is provided with a plurality of through holes,
the reaction cavity 11 is arranged inside the tank body 10, and the reaction cavity 11 is arranged inside the tank body 10;
the water inlet 12 is arranged at the bottom end of the tank body 10 and communicated with the inside of the reaction cavity 11, and the water inlet 12 is connected with the wastewater inlet pipeline 3;
the water outlet 13 is arranged above the side end of the tank body 10, and is communicated with the inside of the reaction cavity 11, and the water outlet 13 is connected with the inlet end of the circulating water outlet pipeline 4;
the circulating water outlet 14 is arranged at the position below the side end of the tank body 10 and communicated with the interior of the reaction cavity 11, and the circulating water outlet 14 is connected with the outlet end of the circulating water outlet pipeline 4;
the air inlet 15 is arranged at a position below the side end of the tank body 10, and is communicated with the interior of the reaction cavity 11;
and the air outlet 16 is arranged at the top end of the tank body 10, and is communicated with the inside of the reaction cavity 11.
The working principle and the beneficial effects of the technical scheme are as follows:
the reaction cavity 11 provides a catalytic oxidation place for the biological toxic wastewater; ozone enters the reaction cavity 11 from the lower position of the tank body 10 through the air inlet 15, and after the reaction is finished, tail gas is discharged from the top end of the tank body 10 through the air outlet 16, so that the separation of the tail gas and waste liquid is facilitated; the waste water enters the reaction chamber 11 from the bottom end of the tank body 10 through the water inlet 12, is discharged from a position above the tank body 10 through the water outlet 13, and then returns to the reaction chamber 11 through the circulating water outlet 14. Through above-mentioned structural design, accomplished ozone and the entering and the discharge of waste water, realized the circulation of waste water in the course of handling simultaneously, guarantee that waste water catalytic oxidation's circulation goes on, improve catalyst utilization ratio and treatment effeciency.
As shown in fig. 3, in one embodiment, the reaction chamber 11 is divided into a first reaction zone 111 and a second reaction zone 112 by a baffle 113, the first reaction zone 111 is communicated with the top of the second reaction zone 112, the first reaction zone 111 is communicated with the water inlet 12 and the air inlet 15, and the second reaction zone 112 is communicated with the water outlet 13 and the circulating water outlet 14; a plurality of first catalyst layers 114 are arranged in the first reaction zone 111 in a staggered manner, baffle plates 116 are arranged between the adjacent first catalyst layers 114, a plurality of second catalyst layers 115 are arranged in the second reaction zone 112 at intervals, and the height of each baffle plate 113 is greater than that of the water outlet 13.
The working principle and the beneficial effects of the technical scheme are as follows:
ozone passes through the air inlet 16, wastewater enters the first reaction zone 111 of the reaction chamber 11 through the water inlet 12, the ozone is mixed in the wastewater, the wastewater sequentially passes through the plurality of first catalyst layers 114 under the action of the baffle plate 116 to undergo catalytic oxidation reaction, then the wastewater enters the second reaction zone 112 through the baffle plate 113, the wastewater and the second catalyst layer 115 undergo catalytic oxidation reaction, the catalyst in the second catalyst layer 115 is converted into a fluidized state, the wastewater in the second reaction zone 112 enters the circulating water outlet pipeline 4 through the water outlet 13, and the wastewater returned circularly passes through the ozone distributor to be discharged and is uniformly mixed with the wastewater in the first reaction zone 111. The reactor 1 realizes two-stage catalytic oxidation of the biotoxicity wastewater, and can adjust the catalyst modules of each reaction zone according to the wastewater quantity, organic matter composition and concentration so as to meet the treatment requirements of different biotoxicities, improve the efficiency of wastewater toxicity degradation, reduce the wastewater circulation times, and realize full utilization of ozone, thereby reducing the operation cost.
In one embodiment, the apparatus for treating biologically toxic wastewater based on ozone oxidation technology further comprises: and the circulating pump 5 is connected between the water outlet 13 and the circulating water outlet 14 through the circulating water outlet pipeline 4, and the circulating pump 5 is connected between the water outlet 13 and the circulating water outlet 14.
The working principle and the beneficial effects of the technical scheme are as follows:
the circulating pump 5 is set to be any one of a centrifugal pump and a dissolved air pump, the centrifugal pump works by utilizing the rotation of an impeller to enable water to generate centrifugal motion, before the water pump is started, a pump shell and a water suction pipe are filled with water, then a motor is started, the impeller and the water are driven by a pump shaft to generate high-speed rotation motion, the water generates centrifugal motion, is thrown to the outer edge of the impeller and flows into a water pressing pipeline of the water pump through a flow channel of a volute-shaped pump shell; the suction inlet of the dissolved air pump can suck air by utilizing the negative pressure effect, and the liquid and the air are mixed and stirred by the pump impeller rotating at high speed without adopting an air compressor and an atmospheric ejector. The circulating pump 5 adopts any one of the two to realize the circulation of the wastewater, and the wastewater and the catalyst mixed liquid are sent back to the reaction cavity 11 again and mixed with the uncatalyzed wastewater, so that the catalyst is recycled, and the wastewater with the biological toxicity not meeting the requirement is reprocessed, so that the biological toxicity is effectively degraded.
In one embodiment, the detection instrument comprises:
the device comprises an ozone concentration detector 21, a COD detector 22 and a biological toxicity detector 23, wherein the ozone concentration detector 21 is arranged in the middle of the reaction cavity 11; the COD detector 22 is arranged on the wastewater inlet pipeline 3; the biotoxicity detector 23 is arranged on the circulating water outlet pipeline 4 between the water outlet 13 and the circulating pump 5.
The working principle and the beneficial effects of the technical scheme are as follows:
the ozone concentration detector 21 is arranged in the middle of the reaction chamber 11 and used for continuously detecting the concentration of ozone in the reactor 11 on line and providing a basis for regulating and controlling the ozone air inflow; COD (chemical oxygen demand) is the amount of reducing substances needing to be oxidized in a water sample measured by a chemical method, and the COD detector 22 is arranged on the wastewater inlet pipeline 3, so that the content of the reducing substances needing to be oxidized in the initial wastewater is measured, and a basis is provided for regulating and controlling the ozone air inflow; the biological toxicity detector 23 is arranged on the circulating water outlet pipeline 4 between the water outlet 13 and the circulating pump 5, and is used for detecting whether the treated wastewater meets the biological toxicity degradation requirement or not, so that a basis is provided for the wastewater to be discharged into a biochemical system or to return to the reaction cavity 11 for circulating treatment.
In one embodiment, the water inlet quality condition of the reactor 1 is COD value 500-10000 mg/L and pH value 5-7.
The working principle and the beneficial effects of the technical scheme are as follows:
the initial wastewater COD value of the reactor 1 is 500-10000 mg/L, and is adaptively set with the maximum and minimum air input of ozone, so that a reasonable wastewater parameter interval is provided for the reactor 1.
As shown in fig. 3, in one embodiment, the apparatus for treating bio-toxic wastewater based on ozone oxidation technology further comprises a sedimentation cleaning apparatus connected to the tank 10, the sedimentation cleaning apparatus comprising:
the two ends of the electric sliding table 61 are respectively connected with the inner wall of the tank body 10 and the baffle 113 and are arranged close to the bottom end of the tank body 10;
the first motor 62 is installed on the outer wall of the tank body 10, the first motor 62 and the electric sliding table 61 are arranged in a position adaptive manner, the first motor 62 is provided with a first output shaft 621 and a second output shaft 622 which rotate synchronously, and the first output shaft 621 penetrates through the tank body 10 and is connected with the input end of the electric sliding table 61;
a first pulley 63 disposed outside the can body 10, and the first pulley 63 is connected to the second output shaft 622;
the second motor 64 is arranged on one side of the electric sliding table 61, and is fixedly connected with the sliding block 63 of the electric sliding table 61;
a first rotating shaft 65, wherein the first rotating shaft 65 is connected with the output end of the second motor 64;
the fixing ring 66 is connected to the outer side of the first rotating shaft 65 through a connecting rod 67, and the fixing rod 66 is arranged in an arc shape;
the brush 68 is uniformly connected to the outer side of the fixing ring 66;
the drain outlet 69 is arranged at the bottom end of the tank body 10, and the height of the drain outlet 69 is lower than that of the water inlet 12.
The working principle and the beneficial effects of the technical scheme are as follows:
in the catalytic oxidation treatment process of wastewater, reactants are generated and settled at the bottom of the tank body 10, the second motor 64 is started, the second motor 64 drives the first rotating shaft 65 to drive the fixing ring 66 to circularly rotate at a small angle, so that the brush 68 is in contact with the tank body 10 to scrape the sediments from the surface of the tank body 10, the first motor 62 is started, the first motor 62 drives the electric sliding table 61 to move, and the sliding block 63 is driven to move along the horizontal direction, so that the fixing ring 66 moves along the horizontal direction; because the jar body 10 bottom is the arc, along with the removal of removing seat 62, brush 68 with the distance of the jar body 10 changes, the different position diameters of solid fixed ring 66 are different, through second motor 61 rotates solid fixed ring 66 to the suitable position of cleaning, makes brush 68 with jar body 10 keeps the contact all the time, uses this position of cleaning as the center simultaneously, carries out small-angle circulation and rotates.
Through the structure design, subside cleaning device and realized cleaning of the reactor jar body 10 bottom, reduce the absorption of deposit at jar internal 10 inner walls, prevent to block up water inlet 12, effectively adapt to the arc jar body 10, small-angle circulation rotation avoids the deposit to drift upwards in the cleaning process simultaneously, reduces the influence to other subassemblies in the reactor 1.
As shown in fig. 4 and 5, in one embodiment, the sedimentation cleaning apparatus further comprises a sedimentation collection apparatus cooperating therewith, the sedimentation collection apparatus comprising:
the machine body 70 is fixedly connected to the outer wall of the bottom end of the tank body 10;
the first cavity 71, the first cavity 71 is arranged at the top end of the machine body 70;
a second cavity 73, wherein the second cavity 73 is arranged below the first cavity 71;
the second rotating shaft 74 vertically penetrates through the machine body 70, two ends of the second rotating shaft 74 respectively extend into the first cavity 71 and the second cavity 73, and the second rotating shaft 74 is rotatably connected with the machine body 70;
a filter rotating disc 75, wherein the filter rotating disc 75 is disposed in the second cavity 73, and the filter rotating disc 75 is connected with the bottom end of the second rotating shaft 74;
the first pipeline 76 is vertically arranged on the machine body 70, the inlet end of the first pipeline 76 is connected with the sewage discharge port 69, and the outlet end of the first pipeline 76 is communicated with the top end of the second cavity 73;
a second pipeline 77, the second pipeline 77 is vertically arranged on the machine body 70, the top end of the second pipeline 77 is communicated with the bottom end of the second cavity 73, and the bottom end of the second pipeline 77 penetrates through the machine body 70;
a water passing groove 78, wherein the water passing groove 78 is arranged on the machine body 70, the water passing groove 78 is arranged above the filtering turntable 75 and is communicated with the side end of the second cavity 73;
the third cavity 79 is arranged inside the machine body 70, and the third cavity 79 is arranged outside the second cavity 73 and is communicated with the water passing groove 78;
the collecting tray 710 is horizontally installed in the third cavity 79, the height of the collecting tray 710 is lower than that of the filtering rotary disc 75, one end of the collecting tray 710 is installed in a clamping groove of the body 70 close to the filtering rotary disc 75, the other end of the collecting tray 710 penetrates through the body 70 and extends outwards, and the collecting tray 710 is connected with the body 70 in a sliding manner;
a handle 711, the handle 711 being attached to an outer side of the collecting tray 710;
a collection trough 712, said collection trough 712 opening above said collection tray 710;
a third conduit 713, wherein the third conduit 713 is opened on the body 70 and arranged below the second cavity 73, and two ends of the third conduit 713 are respectively communicated with the third cavity 79 and the second conduit 77;
the guide plate 714 is arranged by penetrating through the second cavity 73, the water passing groove 78 and the third cavity 79, one end of the guide plate 714 is fixedly connected with the inner wall of the third cavity 79, the other end of the guide plate 714 extends to the center of the filtering rotary disc 75, and the bottom end of the guide plate 714 is flush with the top end of the filtering rotary disc 75;
the first bevel gear 715, the first bevel gear 715 is arranged in the first cavity 71, and the first bevel gear 715 is fixedly connected to the top end of the second rotating shaft 74;
a second bevel gear 716, wherein the second bevel gear 716 is disposed in the first cavity 71, and the second bevel gear 716 is in meshed connection with the first bevel gear 715;
a fixing seat 717, the fixing seat 717 is disposed in the first cavity 71, and the fixing seat 717 is fixedly connected with the body 70;
the third rotating shaft 718 is horizontally arranged through the fixing seat 717, the third rotating shaft 718 is rotatably connected with the fixing seat 717, and one end of the third rotating shaft 718 is connected with the second bevel gear 716;
and a second pulley 719, the second pulley 719 being connected to an end of the third rotating shaft 718 away from the second bevel gear 716, the second pulley 719 being connected to the first pulley 63 by a belt.
The working principle and the beneficial effects of the technical scheme are as follows:
the sedimentation mixed liquid cleaned by the sedimentation cleaning device is discharged from the sewage discharge port 69, enters the second cavity 73 through the first pipeline 76, after the first motor 62 is started, the first belt pulley 63 is driven to rotate to drive the second belt pulley 719 to rotate, the second bevel gear 716 and the second belt pulley 719 synchronously rotate so as to drive the first bevel gear 715 to rotate, then the filtering turntable 75 is driven to rotate through the second rotating shaft 74, the sedimentation mixed liquid passes through the filtering turntable 75, so that sediments are filtered and placed above the filtering turntable 75, filtered water flows out through the filtering turntable 75 through the second pipeline 77, sediments move into the collecting tank under the action of the guide plate, a small part of the sedimentation mixed liquid directly enters the third cavity 79 through the water tank 78, and sediments are collected into the collecting tank 710 after passing through the collecting tank 710, the filtered water is merged with the filtered water in the second pipeline through the third pipeline 713 and discharged out of the machine body 70, the solid sediment is separated, the filtered water can be recycled, and after a period of time, the collecting tank 710 is taken out through the handle 711 and is put back for use after being cleaned.
Through above-mentioned structural design, will subside cleaning device and subside collection device synchronous coordination and use, realized the effective separation of deposit and the circulation of drainage, reduce operation processes and waste material and produce, the deposit that generates is the solid-state subsequent processing of being convenient for, subside collection device and install in jar external side, release jar body bottom space, will filter carousel and the parallelly connected use of collecting vat simultaneously, improve the separation efficiency of deposit, prevent that the deposit from backflowing.
In one embodiment, as shown in fig. 4, a method for treating biotoxic wastewater based on ozone oxidation technology is characterized in that the relation between the ozone air inflow m, the influent COD value n and the ozone concentration c in wastewater is regulated and controlled by a first control system, and the regulation and control method comprises the following steps:
when in use
When the ozone enters the air inlet 15, the first control system adjusts the electromagnetic valve to increase the ozone air inflow m;
when in use
And then, the first control system adjusts the electromagnetic valve of the air inlet 15 to reduce the ozone air inflow m.
The working principle and the beneficial effects of the technical scheme are as follows:
first control system realizes real-time regulation and control to ozone air input m according to into COD value n and the ozone concentration c in the waste water, guarantees to intake in COD value and the waste water ozone concentration be in reasonable interval all the time, can carry out the pertinence to the waste water of different COD values and adjust, improves the practicality of device, guarantees that the stability of oxidation process goes on, prevents that ozone is too much in the waste water or the incomplete phenomenon of waste water oxidation from producing.
In one embodiment, the relationship between the biotoxicity and the electromagnetic valves of the water inlet 12, the water outlet 13 and the circulating water outlet 14 is regulated and controlled by a second control system, and the regulation and control method comprises the following steps:
when the biotoxicity detector 23 outputs a biotoxicity-free signal, the second control system adjusts the electromagnetic valves of the water inlet 12, the water outlet 13 and the circulating water outlet 14 to be opened;
when the biotoxicity detector 23 outputs a biotoxicity signal, the second control system adjusts the electromagnetic valves of the water inlet 12, the water outlet 13 and the circulating water outlet 14 to be closed.
The working principle and the beneficial effects of the technical scheme are as follows:
the biotoxicity detector 23 detects biotoxicity in the wastewater, a signal of whether the biotoxicity exists is output according to a set biotoxicity threshold value, the biotoxicity threshold value is set according to the wastewater treatment requirement, when the biotoxicity detector 23 outputs no biotoxicity signal, the treated wastewater is discharged by controlling the opening of the electromagnetic valve and enters a biochemical system for biodegradation treatment, and when the biotoxicity detector 23 outputs a biotoxicity signal, the electromagnetic valve is controlled to be closed, so that the circulating reflux of the wastewater is realized. The second control system controls the water inlet 12, the water outlet 13 and the circulating water outlet 14 according to the biological toxicity detector 23, so that the real-time regulation and control of the discharge and circulation of the wastewater are realized, and the biological toxicity degradation condition of the wastewater is effectively monitored.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. An apparatus for treating biologically toxic wastewater based on ozone oxidation technology, comprising:
the device comprises a reactor (1) and a detection instrument, wherein the reactor (1) provides a reaction site for biological toxic wastewater, the wastewater treated by the reactor (1) enters a biochemical system for biodegradation treatment, the bottom end of the outside of the reactor (1) is connected with a wastewater inlet pipeline (3), and the side end of the outside of the reactor (1) is connected with a circulating water outlet pipeline (4); the plurality of detecting instruments are respectively arranged in the reactor (1), on the wastewater inlet pipeline (3) and on the circulating water outlet pipeline (4);
the reactor (1) comprises:
a tank body (10),
the reaction cavity (11), the reaction cavity (11) is arranged inside the tank body (10);
the water inlet (12) is formed in the bottom end of the tank body (10) and communicated with the interior of the reaction cavity (11), and the water inlet (12) is connected with a wastewater inlet pipeline (3);
the water outlet (13) is arranged above the side end of the tank body (10) and communicated with the interior of the reaction cavity (11), and the water outlet (13) is connected with the inlet end of the circulating water outlet pipeline (4);
the circulating water outlet (14) is arranged at the position below the side end of the tank body (10) and communicated with the interior of the reaction cavity (11), and the circulating water outlet (14) is connected with the outlet end of the circulating water outlet pipeline (4);
the air inlet (15) is arranged at the position below the side end of the tank body (10), and the air inlet (15) is communicated with the interior of the reaction cavity (11);
the gas outlet (16) is formed in the top end of the tank body (10), and the gas outlet (16) is communicated with the interior of the reaction cavity (11);
the reaction cavity (11) is divided into a first reaction area (111) and a second reaction area (112) through a baffle plate (113), the tops of the first reaction area (111) and the second reaction area (112) are communicated, the first reaction area (111) is communicated with the water inlet (12) and the air inlet (15), and the second reaction area (112) is communicated with the water outlet (13) and the circulating water outlet (14); a plurality of first catalyst layers (114) are arranged in the first reaction zone (111) in a staggered mode, baffle plates (116) are arranged between the adjacent first catalyst layers (114), a plurality of second catalyst layers (115) are arranged in the second reaction zone (112) at intervals, and the height of each baffle (113) is larger than that of the water outlet (13);
still including subsiding cleaning device, subside cleaning device with jar body (10) are connected, it includes to subside cleaning device:
the two ends of the electric sliding table (61) are respectively connected with the inner wall of the tank body (10) and the baffle (113) and are arranged close to the bottom end of the tank body (10);
the first motor (62), the first motor (62) is installed on the outer wall of the tank body (10), the first motor (62) and the electric sliding table (61) are arranged in a position adaptive manner, the first motor (62) is provided with a first output shaft (621) and a second output shaft (622) which rotate synchronously, and the first output shaft (621) penetrates through the tank body (10) and is connected with the input end of the electric sliding table (61);
a first pulley (63) disposed outside the can (10), and the first pulley (63) is connected to the second output shaft (622);
the second motor (64) is arranged on one side of the electric sliding table (61), and is fixedly connected with a sliding block of the electric sliding table (61);
the first rotating shaft (65), the first rotating shaft (65) is connected with the output end of the second motor (64);
the fixing ring (66) is connected to the outer side of the first rotating shaft (65) through a connecting rod (67), and the fixing ring (66) is arranged in an arc shape;
the hairbrush (68), the hairbrush (68) is connected with the outside of the fixed ring (66) uniformly;
the sewage draining outlet (69) is arranged at the bottom end of the tank body (10), and the height of the sewage draining outlet (69) is lower than that of the water inlet (12).
2. The apparatus for treating bio-toxic wastewater based on ozone oxidation technology as claimed in claim 1, further comprising: and the circulating pump (5) is connected between the water outlet (13) and the circulating water outlet (14) through the circulating water outlet pipeline (4).
3. The apparatus for treating bio-toxic wastewater based on ozone oxidation technology as claimed in claim 2, wherein said detecting instrument comprises: the device comprises an ozone concentration detector (21), a COD detector (22) and a biological toxicity detector (23), wherein the ozone concentration detector (21) is arranged in the middle of the reaction cavity (11); the COD detector (22) is arranged on the wastewater inlet pipeline (3); the biological toxicity detector (23) is arranged on a circulating water outlet pipeline (4) between the water outlet (13) and the circulating pump (5).
4. The device for treating the biotoxicity wastewater based on the ozone oxidation technology as claimed in claim 1, wherein the water inlet quality condition of the reactor (1) is that the COD value is 500-10000 mg/L, and the pH value is 5-7.
5. The apparatus for treating biologically toxic wastewater based on ozone oxidation technology as claimed in claim 1, wherein said sedimentation cleaning apparatus further comprises a sedimentation collection apparatus used in combination, said sedimentation collection apparatus comprising:
the machine body (70), the machine body (70) is fixedly connected to the outer wall of the bottom end of the tank body (10);
the first cavity (71), the first cavity (71) is arranged at the top end of the machine body (70);
a second cavity (73), wherein the second cavity (73) is arranged below the first cavity (71);
the second rotating shaft (74) vertically penetrates through the machine body (70), two ends of the second rotating shaft (74) respectively extend into the first cavity (71) and the second cavity (73), and the second rotating shaft (74) is rotatably connected with the machine body (70);
the filtering rotary disc (75) is arranged in the second cavity (73), and the filtering rotary disc (75) is connected with the bottom end of the second rotating shaft (74);
the first pipeline (76) is vertically arranged on the machine body (70), the inlet end of the first pipeline (76) is connected with the sewage outlet (69), and the outlet end of the first pipeline (76) is communicated with the top end of the second cavity (73);
the second pipeline (77) is vertically arranged on the machine body (70), the top end of the second pipeline (77) is communicated with the bottom end of the second cavity (73), and the bottom end of the second pipeline (77) penetrates through the machine body (70);
the water passing tank (78) is arranged on the machine body (70), and the water passing tank (78) is arranged above the filtering turntable (75) and communicated with the side end of the second cavity (73);
the third cavity (79) is arranged inside the machine body (70), and the third cavity (79) is arranged outside the second cavity (73) and communicated with the water passing groove (78);
the collecting disc (710), the collecting disc (710) is horizontally arranged in the third cavity (79), the height of the collecting disc (710) is lower than that of the filtering rotary disc (75), one end of the collecting disc (710) is arranged in a clamping groove of the body (70) close to the filtering rotary disc (75), the other end of the collecting disc (710) penetrates through the body (70) and extends outwards, and the collecting disc (710) is connected with the body (70) in a sliding manner;
a handle (711), the handle (711) being attached to an outside of the collection tray (710);
a collection trough (712), the collection trough (712) opening above the collection tray (710);
a third pipeline (713), wherein the third pipeline (713) is arranged on the machine body (70) and below the second cavity (73), and two ends of the third pipeline (713) are respectively communicated with the third cavity (79) and the second pipeline (77);
the guide plate (714) penetrates through the second cavity (73), the water passing groove (78) and the third cavity (79), one end of the guide plate (714) is fixedly connected with the inner wall of the third cavity (79), the other end of the guide plate (714) extends towards the center of the filtering rotary disc (75), and the bottom end of the guide plate (714) is flush with the top end of the filtering rotary disc (75);
the first bevel gear (715), the first bevel gear (715) is arranged in the first cavity (71), and the first bevel gear (715) is fixedly connected to the top end of the second rotating shaft (74);
a second bevel gear (716), the second bevel gear (716) being disposed within the first cavity (71), the second bevel gear (716) being in meshing engagement with the first bevel gear (715);
the fixing seat (717) is arranged in the first cavity (71), and the fixing seat (717) is fixedly connected with the machine body (70);
the third rotating shaft (718) is horizontally arranged in a penetrating manner through the fixing seat (717), the third rotating shaft (718) is rotatably connected with the fixing seat (717), and one end of the third rotating shaft (718) is connected with the second bevel gear (716);
and the second belt wheel (719), the second belt wheel (719) is connected to one end, away from the second bevel gear (716), of the third rotating shaft (718), and the second belt wheel (719) is connected with the first belt wheel (63) through a belt.
6. A method for treating biotoxic wastewater based on ozone oxidation technology, which is applied to the device for treating biotoxic wastewater based on ozone oxidation technology according to any one of claims 1 to 5, and is characterized in that the relation between the ozone air input m, the water inlet COD value n and the ozone concentration c in the wastewater is regulated and controlled through a first control system, and the regulation and control method comprises the following steps:
when in use
When the ozone generator is used, the first control system adjusts an electromagnetic valve of an air inlet (15) to increase the ozone air inflow m;
when in use
And when the ozone is exhausted, the first control system adjusts the electromagnetic valve of the air inlet (15) to reduce the ozone air inflow m.
7. The method for treating the biotoxicity wastewater based on the ozone oxidation technology as claimed in claim 6, wherein the relationship between the biotoxicity and the electromagnetic valves of the water inlet (12), the water outlet (13) and the circulating water outlet (14) is regulated and controlled through a second control system, and the regulation and control method comprises the following steps:
when the biotoxicity detector (23) outputs a biotoxicity-free signal, the second control system adjusts the electromagnetic valves of the water inlet (12), the water outlet (13) and the circulating water outlet (14) to be opened;
when the biotoxicity detector (23) outputs a biotoxicity signal, the second control system adjusts the electromagnetic valves of the water inlet (12), the water outlet (13) and the circulating water outlet (14) to be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011070738.7A CN112225308B (en) | 2020-10-09 | 2020-10-09 | Device and method for treating biotoxic wastewater based on ozone oxidation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011070738.7A CN112225308B (en) | 2020-10-09 | 2020-10-09 | Device and method for treating biotoxic wastewater based on ozone oxidation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112225308A CN112225308A (en) | 2021-01-15 |
| CN112225308B true CN112225308B (en) | 2021-05-18 |
Family
ID=74120513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011070738.7A Active CN112225308B (en) | 2020-10-09 | 2020-10-09 | Device and method for treating biotoxic wastewater based on ozone oxidation technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112225308B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115771942B (en) * | 2022-11-22 | 2023-09-26 | 江苏南大华兴环保科技股份公司 | Integrated carbon and nitrogen removal device for organic wastewater containing salt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007136351A (en) * | 2005-11-18 | 2007-06-07 | Ngk Insulators Ltd | Water treatment catalytic reactor |
| CN102689977A (en) * | 2012-06-01 | 2012-09-26 | 浙江清华长三角研究院 | Waste water purification method and reactor adopting ozone oxidation catalysis and using compound suspended carrier |
| CN106698638A (en) * | 2017-01-09 | 2017-05-24 | 北京林业大学 | Catalyst adding optimization control method for ozone catalytic-oxidation process |
| CN111392852A (en) * | 2020-04-24 | 2020-07-10 | 华能国际电力股份有限公司 | Feedforward-feedback cooperative control ozone accurate dosing system and method |
| CN211513542U (en) * | 2019-11-28 | 2020-09-18 | 刘士洲 | Sedimentation tank waste residue filtering mechanism |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4142321B2 (en) * | 2002-03-29 | 2008-09-03 | 住友重機械エンバイロメント株式会社 | Coagulation sedimentation equipment |
| CN206950730U (en) * | 2017-03-30 | 2018-02-02 | 绍兴柯桥排水有限公司 | A kind of perforation water distribution and the vertical sedimentation basin with mud-scraping apparatus |
| CN207918518U (en) * | 2018-02-02 | 2018-09-28 | 青岛世创环境工程有限公司 | A kind of integrated ozone oxidation depth processing system |
| CN108821422A (en) * | 2018-06-29 | 2018-11-16 | 中电环保股份有限公司 | A kind of device improving wastewater biochemical |
-
2020
- 2020-10-09 CN CN202011070738.7A patent/CN112225308B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007136351A (en) * | 2005-11-18 | 2007-06-07 | Ngk Insulators Ltd | Water treatment catalytic reactor |
| CN102689977A (en) * | 2012-06-01 | 2012-09-26 | 浙江清华长三角研究院 | Waste water purification method and reactor adopting ozone oxidation catalysis and using compound suspended carrier |
| CN106698638A (en) * | 2017-01-09 | 2017-05-24 | 北京林业大学 | Catalyst adding optimization control method for ozone catalytic-oxidation process |
| CN211513542U (en) * | 2019-11-28 | 2020-09-18 | 刘士洲 | Sedimentation tank waste residue filtering mechanism |
| CN111392852A (en) * | 2020-04-24 | 2020-07-10 | 华能国际电力股份有限公司 | Feedforward-feedback cooperative control ozone accurate dosing system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112225308A (en) | 2021-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109485205B (en) | Movable organic wastewater treatment equipment | |
| CN213037620U (en) | Prefabricated modular municipal sewage treatment system | |
| CN110563129A (en) | activated sludge biological sewage treatment device | |
| CN112225308B (en) | Device and method for treating biotoxic wastewater based on ozone oxidation technology | |
| CN115849628A (en) | Comprehensive sewage multi-effect grading treatment system and treatment effect monitoring method | |
| CN105129969A (en) | Periphery filtering effluent biochemistry sedimentation tank | |
| CN111439896B (en) | Sewage treatment device and method thereof | |
| CN211644998U (en) | Sewage treatment plant that treatment effeciency is high | |
| CN211999354U (en) | Chlorinated polyether resin mother liquor wastewater treatment system convenient for clearing flocculent precipitate | |
| CN115196835B (en) | Industrial sewage treatment system and method | |
| CN213446586U (en) | Fluorescence flaw detection wastewater integrated treatment system | |
| CN110451635B (en) | Biological treatment system and method for high-salt high-organic matter industrial wastewater | |
| CN113149374A (en) | Water-based paint process water processing system | |
| CN111792727A (en) | Sewage treatment equipment with aeration angle and height adjustable function | |
| CN218786536U (en) | Waste water filtering device | |
| CN1169736C (en) | System and process for preparing superpur drinking water | |
| CN109734252A (en) | A kind of system and method handling pickle wastewater | |
| CN116040843B (en) | Integrated micro-polluted water body treatment device | |
| CN221720608U (en) | Pollutant processing apparatus in industrial waste water | |
| CN221644738U (en) | Sewage treatment and circulation system for stable mixing station of residence and water | |
| CN117985897B (en) | Water treatment equipment for water containing poly reinjection | |
| CN220078747U (en) | Advanced wastewater purifier | |
| CN219323905U (en) | Sludge discharge device for micro-polluted water treatment | |
| CN217628016U (en) | Printing and dyeing auxiliary is effluent treatment plant for workshop | |
| CN220413094U (en) | Immersed ultrafiltration device applied to coking wastewater treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |