A method for adding ozone and oxygen-enriched solution using a dissolved ozone dosing system

Abstract

The present invention discloses a method for dosing ozone / oxygen-enriched solution by using a dissolved ozone dosing system. It includes 1) establishing an ozone / oxygen-enriched solution dosing system, including a reaction tank, a diffuser, a pressure regulating valve group and a water pump; a water mist nozzle and an ozone / oxygen nozzle are arranged on the top of the tank in the reaction tank; a control valve is arranged between the reaction tank and the diffuser; a channel for releasing the oxygen-enriched solution is opened on the cylindrical side wall of the diffuser, that is, a small hole or a narrow gap or a combination of a small hole and a narrow gap, which can generate a certain back pressure to ensure that there is a pressure difference of more than 2 bar between the outlet pressure of the diffuser and the water pressure to be treated; 2) ozone / oxygen is sent to the reaction tank after being pressure-regulated; 3) dissolved water is pressurized by a water pump and sent to the reaction tank from the top of the tank in a high-pressure mist; 4) a water quality online detector is arranged at the water outlet, and the size of the control valve is controlled by connecting the signal receiver with the PLC controller. The method can accurately adjust the water quality, improve the ozone solubility, and greatly improve the utilization rate of ozone / oxygen.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment, and relates to a method for adding ozone / oxygen-enriched solution by using a dissolved ozone adding system. The method for adding ozone / oxygen-enriched solution by using a dissolved ozone adding system is suitable for disinfection process in water treatment. Background Art

[0002] Ozone is a broad-spectrum disinfectant. The common ways to add ozone are ejector mixing method, mixing tower ozone addition method, ozone aeration mixing addition method, and mixing pump ozone addition method. These methods all have the following disadvantages:

[0003] The ejector uses water flow to form a low-pressure area in the venturi nozzle. The pressure difference sucks in and mixes ozone / oxygen, and then injects the mixed liquid with bubbles into the water to be treated. Due to the escape of bubbles in the water, this dosing method is better than the aeration method, but the gas utilization rate is less than 45%.

[0004] The mixing tower ozone dosing method usually injects water into the tower in the form of water droplets / mist, and then the ozone / oxygen and water are mixed and naturally mixed with the water in the form of bubbles to form a mixed liquid, which is then added to the water to be treated. This method cannot prevent ozone / oxygen bubbles from escaping from the water and reduce the ozone concentration in the water.

[0005] The installation method of mixing pump ozone dosing usually adopts vortex pump, which forms negative pressure in the pump, sucks gas through the air inlet, and mixes gas and liquid through the stirring of multiple impellers. The efficiency of dissolving ozone by mixing pump is higher, generally less than 70%. However, the specified range of gas-liquid ratio is too harsh and is not suitable for matching large ozone generators.

[0006] No matter which of the above dosing methods is used, the result is that the gas-liquid mixture is added to the water. Since the water is at a low pressure, when the mixed liquid meets the water, the gas in the mixed liquid precipitates from the mixed liquid in the form of bubbles, thereby reducing the concentration of the ozone liquid, and then reducing the disinfection effect or requiring a large amount of ozone / oxygen and energy to ensure the disinfection effect.

[0007] The solubility of ozone in water depends on the temperature and pressure of the water, which conforms to Henry's law. The lower the water temperature, the greater the solubility, and the greater the pressure, the greater the solubility. Maintaining the concentration of ozone is an important factor affecting the disinfection effect. Controlling the water temperature requires a lot of energy and is not suitable for use in scenarios with large water volumes. The method of increasing and controlling the pressure to generate a supersaturated solution is a more economical and feasible method. Summary of the invention

[0008] The object of the present invention is to overcome the deficiencies of the prior art and provide a method for adding ozone / oxygen-enriched solution using a dissolved ozone adding system, which can greatly improve the utilization rate of ozone / oxygen.

[0009] The technical concept of the present invention is as follows: ozone / oxygen at a certain pressure and dissolved water at a certain pressure are sent into a reaction tank, the gas and water are mixed in a certain proportion in the tank, and a high-concentration ozone / oxygen-rich solution is generated under the action of the pressure in the tank; the saturated high-concentration ozone / oxygen-rich solution is then sealed between the reaction tank and the control valve through a control valve, so that the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / oxygen-rich solution; finally, the supersaturated high-concentration ozone / oxygen-rich solution is reversely injected into the water to be treated through a diffuser, so that the high-concentration ozone / oxygen-rich solution is instantly dissolved with the water, the concentration of dissolved ozone in the water body is increased, and at the same time, the generation of bubbles can be greatly reduced, and the utilization rate of oxygen is greatly improved, and the excess ozone returns to the reaction tank through the discharge pipe.

[0010] The objective of the present invention is achieved through the following technical solutions:

[0011] The present invention provides a method for adding ozone / oxygen-enriched solution by using a dissolved ozone adding system, comprising the following steps:

[0012] (1) Establishing a high-concentration ozone / oxygen-rich solution dosing system; the high-concentration ozone / oxygen-rich solution dosing system comprises a reaction tank and a diffuser, and also comprises an ozone / oxygen pipeline and a dissolving water pipeline; a water mist nozzle and an ozone / oxygen nozzle are arranged on the top of the reaction tank; a water pump is arranged on the dissolving water pipeline; the water pump outlet is connected to the water inlet and the water mist nozzle on the top of the reaction tank through the dissolving water pipeline; a pressure regulating valve group is arranged on the ozone / oxygen pipeline; the pressure regulating valve group outlet is connected to the ozone / oxygen inlet and the ozone / oxygen nozzle on the top of the reaction tank through the ozone / oxygen pipeline; the bottom outlet of the reaction tank is connected to the inlet of the diffuser; the high-concentration ozone / oxygen-rich solution between the bottom outlet of the reaction tank and the inlet of the diffuser A control valve capable of precisely controlling flow and pressure is provided on the liquid pipeline; a diffuser is arranged in the water to be treated; the diffuser is a hollow cylindrical object with one end open and the other end closed; a channel for releasing ozone / oxygen-rich solution is provided on the cylindrical side wall of the diffuser; the channel for releasing ozone / oxygen-rich solution is a small hole or a narrow gap, or a combination of a small hole and a narrow gap; the channel for releasing ozone / oxygen-rich solution can generate a certain back pressure and spray the supersaturated oxygen-rich solution into the water to be treated at a certain outlet pressure, ensuring that there is a pressure difference of more than 2 bar between the outlet pressure of the diffuser and the pressure of the water to be treated; the ozone / oxygen-rich solution is a high-concentration ozone / oxygen-rich solution;

[0013] The diffuser is arranged in the raw water or water pipeline with flowing water to be treated, and is located upstream of the water flow. A channel for releasing ozone / oxygen-rich solution is opened on half of the side wall of the diffuser; the channel for releasing ozone / oxygen-rich solution is one or more, or one or more rows; the diffuser is inserted into the raw water or water pipeline perpendicular to the water flow direction, and one side of the diffuser with the channel for releasing ozone / oxygen-rich solution is facing the upstream of the water flow, so that the oxygen-rich solution in the diffuser can be ejected from the channel for releasing ozone / oxygen-rich solution in the reverse direction toward the water flow and can generate a vortex-enhanced mixing effect;

[0014] Alternatively, the diffuser is arranged in a pool, pond or sewage tank without flowing water to be treated, and multiple or multiple rows of channels for releasing ozone / oxygen-enriched solution are opened on the double-side side walls or the entire cylindrical side wall of the diffuser;

[0015] (2) Ozone / oxygen is adjusted to a certain pressure through a pressure regulating valve group and transported to the reaction tank through a pipeline;

[0016] (3) Ozone / oxygen with a certain pressure (more than 2 bar) enters the top of the reaction tank through the ozone / oxygen pipeline. At the same time, the dissolved water (oxygen-rich water filtered to remove impurities after the ozone addition process) is pressurized to a certain pressure by a water pump and then sent into the reaction tank from the top of the tank through the dissolved water pipeline in the form of high-pressure mist, and the pressure in the tank is maintained at a certain pressure; in the reaction tank, the ozone / oxygen is mixed with the pressurized dissolved water to form a gas-liquid mixture with a certain pressure; the contact area between the water mist and the ozone / oxygen is large, and the pressure in the tank is raised to a certain pressure, and the ozone / oxygen quickly dissolves in the water to generate a high-concentration ozone / oxygen-rich solution; as the ozone / oxygen is continuously sent in, or as the water mist with a certain pressure continuously enters the tank, the pressure in the tank continues to increase. When the pressure in the reaction tank reaches a certain pressure (more than 2 bar), the high-concentration ozone / oxygen-rich solution in the tank is converted into a saturated high-concentration ozone / oxygen-rich solution; The saturated high-concentration ozone / oxygen-rich solution is pressed through the pipe at the bottom of the reaction tank to a control valve that can accurately control the flow and pressure. The control valve seals the saturated high-concentration ozone / oxygen-rich solution between the reaction tank and the control valve. Due to the continuous pressure in the reaction tank, the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / oxygen-rich solution; the control valve is opened, and the supersaturated high-concentration ozone / oxygen-rich solution passes through the valve core in the control valve and is transported to the diffuser through the pipeline. The channel for releasing ozone / oxygen-rich solution, i.e., the small holes and / or gaps on the diffuser, forms a mixed solution of high-concentration ozone / oxygen-rich solution and a small amount of ozone / oxygen microbubbles, which is reversely sprayed into the water to be treated. The high-concentration ozone / oxygen-rich solution quickly dissolves with the water (meets the disinfected substances in the water and starts disinfection treatment). While dissolving ozone / dissolved oxygen (increasing the amount of dissolved ozone / dissolved oxygen in the water), a small amount of ozone / oxygen microbubbles are absorbed by the water flow.

[0017] (4) An online water quality detector (water quality meter probe, etc.) is installed at the downstream of the water flow in the raw water or water pipeline or at the outlet of the pool, pond or sewage tank. The online water quality detector is connected to a signal receiver, and the signal receiver is connected to the input end of the PLC controller; the output end of the PLC controller is connected to the control valve; the online water quality detector transmits signals to the signal receiver in real time, and the signal received by the signal receiver is processed by the PLC to control the opening size of the control valve to control the amount of high-concentration ozone / oxygen-rich solution released, thereby achieving the water quality requirements that the user hopes to control.

[0018] Furthermore, the inlet of the dissolved water pipeline is connected to the oxygen-enriched water outlet after the water to be treated is treated by adding ozone solution (that is, the oxygen-enriched water outlet treated by the ozone solution adding system and adding process of the present invention is used as water for the water pump, i.e., dissolved water), that is, the downstream outlet of the raw water or dissolved water pipeline with water flow to be treated is connected to the water pump inlet through the dissolved water pipeline; or, the outlet of the pool, pond or sewage tank without water flow to be treated is connected to the water pump inlet through the dissolved water pipeline. That is, the excess ozone / oxygen passes through the discharge pipe and is neutralized and then returned to the reaction tank.

[0019] The filtered water treated by the high-concentration ozone / oxygen-enriched dosing process of the present invention is used as water for water pumps, that is, dissolved water. For example, customers of sewage treatment plants can use the filtered water treated and disinfected by the high-concentration ozone / oxygen-enriched dosing process of the present invention as water for water pumps; water plants can use the filtered water treated and disinfected by the high-concentration ozone / oxygen-enriched dosing process of the present invention as water for water pumps; natural water bodies can use the water treated and disinfected by the high-concentration ozone / oxygen-enriched dosing process of the present invention and then filtered through sand as water for water pumps.

[0020] Furthermore, the high-concentration ozone / oxygen-rich solution dosing system also includes a liquid oxygen storage tank, an electronic vaporizer or heat exchanger, and an ozone generator connected in sequence; or, it also includes an air separation device and an ozone generator connected in sequence; or, it also includes a Dewar tank or a steel cylinder, and an ozone generator connected in sequence; the ozone generator outlet is connected to the ozone / oxygen pipeline inlet; a pressure regulating valve group is provided on the ozone / oxygen pipeline connecting the ozone generator outlet and the gas inlet on the top of the reaction tank.

[0021] Furthermore, in the step (2), high-pressure and low-temperature liquid oxygen is stored in a liquid oxygen storage tank, and the liquid oxygen is released from the bottom of the liquid oxygen storage tank and transported to an electronic vaporizer or a heat exchanger, and the electronic vaporizer or the heat exchanger continuously and quantitatively heats and vaporizes the liquid oxygen to convert it into gaseous oxygen; or, oxygen is produced by an air separation device; or, oxygen is stored in a dewar tank or a steel cylinder, and the oxygen is released from the dewar tank or the steel cylinder; the oxygen is transported to an ozone generator through a pipeline to produce ozone and oxygen (oxygen is ionized by the ozone generator to produce about 6-10% ozone and 90-94% oxygen); the ozone / oxygen is transported to a pressure regulating valve group through a pipeline to adjust the pressure to more than 2 bar, and then transported to the reaction tank through a pipeline.

[0022] Furthermore, in step (3), ozone / oxygen with a pressure of more than 2 bar enters the top of the reaction tank through the ozone / oxygen pipeline. At the same time, the dissolved water (oxygen-rich water filtered to remove impurities after the ozone addition process) is pressurized to more than 2 bar by a water pump and then sent into the reaction tank from the top of the tank through the dissolved water pipeline in the form of high-pressure mist, and the pressure in the tank is maintained at more than 2 bar. The gasified ozone / oxygen with a pressure of more than 2 bar and the pressurized dissolved water pressurized to a pressure of more than 2 bar by the water pump form a gas-water mixture on the top of the reaction tank; the gas-water mixture gradually forms a saturated high-concentration ozone / oxygen-rich solution in the reaction tank; the saturated high-concentration ozone / oxygen-rich solution passes through a control valve that can accurately control the flow and pressure on the high-concentration ozone / oxygen-rich solution pipeline between the reaction tank and the diffuser to form a supersaturated high-concentration ozone / oxygen-rich solution; the supersaturated high-concentration ozone / oxygen-rich solution is reversely sprayed into the water upstream of the raw water flow or into the water in the pool through the channel for releasing the ozone / oxygen-rich solution on the diffuser.

[0023] Furthermore, when the diffuser is arranged in raw water or a water pipe with flowing water to be treated, the diffuser is a hollow long cylindrical object with one half of its cross section being a polygon and the other half being an arc-shaped and closed at one end, and a plurality of channels for releasing ozone / oxygen-rich solution are opened on half of the side wall on one side of the polygon; the channels for releasing ozone / oxygen-rich solution are one or more rows of small holes, one or more rows of narrow gaps, or a combination of one or more rows of small holes and one or more rows of narrow gaps (i.e. a combination of small holes and narrow gaps); or one or more small holes, one or more narrow gaps, or a combination of one or more small holes and one or more narrow gaps (i.e. a combination of small holes and narrow gaps); the diffuser is inserted into the raw water perpendicular to the direction of the water flow, and the side of the diffuser with the small holes and / or narrow gaps faces the upstream of the water flow, so that the oxygen-rich solution in the diffuser can be sprayed out from the small holes and / or narrow gaps in the reverse direction toward the water flow.

[0024] When the diffuser is set in a pool, pond or sewage tank without water flow to be treated, the diffuser that achieves 360° delivery can be designed as a hollow cylindrical shape. On the premise of ensuring back pressure, it can also be designed as a square cylindrical shape with a hollow cross-section of a polygon (such as square, hexagon, etc.).

[0025] Furthermore, the small holes and / or gaps in each row are located on the same vertical line and are evenly arranged.

[0026] Furthermore, multiple channels for releasing ozone / oxygen-enriched solution on the same horizontal plane are evenly arranged at a central angle of less than 180°; two adjacent channels for releasing ozone / oxygen-enriched solution on the same horizontal plane are arranged at an acute central angle to ensure that the oxygen-enriched solution is ejected in the direction of the water flow at a certain outlet pressure (greater than 3 bar) to mix with the water to be treated, and can produce a vortex-enhanced mixing effect.

[0027] Further, the small holes are designed for small-diameter pipes below DN25, that is, when the high-concentration oxygen-rich solution pipe is a small-diameter pipe below DN25, the channel for releasing ozone / oxygen-rich solution is one or more rows of small holes, or a combination of one or more rows of small holes and one or more rows of narrow gaps; or one or more small holes, or a combination of one or more small holes and one or more narrow gaps; narrow gaps are more suitable for large-diameter pipes greater than DN25, that is, when the high-concentration oxygen-rich solution pipe is a large-diameter pipe greater than DN25, the channel for releasing ozone / oxygen-rich solution is one or more rows of narrow gaps, or a combination of one or more rows of small holes and one or more rows of narrow gaps; or one or more narrow gaps, or a combination of one or more small holes and one or more narrow gaps.

[0028] Furthermore, the volume ratio of ozone / oxygen with a pressure of more than 2 bar to dissolved water (oxygen-rich effluent from which impurities are filtered and removed after being treated by the ozone dosing process) is not less than 1:10.

[0029] The working principle of the method of adding ozone / oxygen-enriched solution by using a dissolved ozone adding system of the present invention is as follows: high-pressure and low-temperature liquid oxygen is stored in a liquid oxygen storage tank, and the liquid oxygen comes out from the bottom of the liquid oxygen storage tank and is transported to an electronic vaporizer or a heat exchanger to continuously and quantitatively convert the liquid oxygen into oxygen; or, the oxygen is stored in a dewar tank or a steel cylinder, and the oxygen is released from the dewar tank or the steel cylinder; the oxygen passes through an ozone generator to produce ozone and oxygen; the pressure is adjusted to more than 2 bar by a pressure regulating valve group; the ozone / oxygen with a pressure of more than 2 bar is sent into the tank from the top through an ozone / oxygen pipeline. into the reaction tank, and exhaust the air in the tank; at the same time, the dissolved water (oxygen-rich water that has been filtered to remove impurities after the ozone addition process) is pressurized to more than 2 bar by a water pump and then sent into the reaction tank from the top of the tank through the dissolved water pipeline in the form of high-pressure mist, and the pressure in the tank is maintained at more than 2 bar; in the reaction tank, ozone / oxygen is mixed with pressurized dissolved water to form a gas-liquid mixture with a certain pressure; because the contact area between water mist and ozone / oxygen is large, and the pressure in the tank is raised to the set pressure environment, ozone / oxygen quickly dissolves in water and generates a high-concentration ozone / oxygen-rich solution; as the ozone Oxygen is continuously fed in, or, as water mist with a certain pressure continuously enters the tank, the pressure in the tank is increased to the set pressure. When the pressure in the reaction tank continuously reaches more than 2 bar, the high-concentration ozone / oxygen-rich solution in the tank is converted into a saturated high-concentration ozone / oxygen-rich solution; the saturated high-concentration ozone / oxygen-rich solution is pressed through the pipe at the bottom of the reaction tank to a control valve that can accurately control the flow and pressure. The control valve seals the saturated high-concentration ozone / oxygen-rich solution between the reaction tank and the control valve. Due to the continuous pressure in the reaction tank, the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / Oxygen-enriched solution; open the control valve, the supersaturated high-concentration ozone / oxygen-enriched solution passes through the valve core in the control valve and is transported to the diffuser through the pipeline. The channel for releasing ozone / oxygen-enriched solution, i.e., the small holes and / or gaps on the diffuser, forms a mixture of high-concentration ozone / oxygen-enriched solution and a small amount of ozone / oxygen microbubbles, which are sprayed into the water in reverse. The high-concentration ozone / oxygen-enriched solution quickly dissolves with the water (meets the disinfected substances in the water and starts disinfection treatment), and while dissolving ozone / dissolved oxygen (increasing the amount of dissolved ozone / dissolved oxygen in the water), a small amount of ozone / oxygen microbubbles are absorbed by the water flow. The water quality probe is set in the water to be treated (the downstream of the water flow in the raw water or water pipeline or the outlet of the pool, pond or sewage tank), and transmits the signal to the signal receiver on the control valve in real time. The signal received by the signal receiver is processed by the PLC to control the opening size of the control valve to control the amount of high-concentration ozone / oxygen-enriched solution, so as to achieve the amount of dissolved ozone that the user wants to control.

[0030] A liquid level meter with signal output is installed outside the reaction tank. The liquid level signal of the high-concentration ozone / oxygen-rich solution in the tank is controlled by the PLC processor to control the water pump and the switch of ozone / oxygen injection. When the liquid level drops, the PLC processor controls the water pump and the switch of ozone / oxygen injection to open, generating high-concentration ozone / oxygen-rich solution to supplement the amount of high-concentration ozone / oxygen-rich solution consumed in the water.

[0031] Ozone / oxygen with a pressure of more than 2 bar is dissolved in the water mist and produces an ozone / oxygen-rich solution during the pressure increase process, and forms a supersaturated ozone / oxygen-rich solution before being added to the water to be treated.

[0032] Ozone / oxygen is gasified and pressure-regulated to above 2 bar, and dissolved water is pressurized to above 2 bar by a water pump. The two are mixed in the reaction tank and generate high-concentration ozone / oxygen-rich solution under pressure conditions. Only by keeping the system pressure greater than 2 bar can the saturated high-concentration ozone / oxygen-rich solution be further converted into a supersaturated high-concentration ozone / oxygen-rich solution, otherwise, it will affect the oxygen utilization rate of more than 99%. When the high-concentration ozone / oxygen-rich solution passes through small holes and gaps, due to the pressure drop, a small amount of ozone / oxygen overflows from the solution in the form of bubbles, so the overall oxygen utilization rate is more than 99%.

[0033] The solubility of ozone / oxygen is related to temperature and pressure: under the same pressure, the lower the temperature, the greater the solubility; under the same temperature, the greater the pressure, the greater the solubility; therefore, lowering the water temperature and increasing the pressure in the tank can strengthen or accelerate the generation of carbonic acid. According to the conditions of each usage scenario, such as water temperature, water pressure, water quality parameters of raw water (water to be treated), the stable dissolved ozone value expected by the user, and the location of the high-concentration ozone / oxygen-enriched solution delivery point, the parameters of the water pump and the amount of ozone / oxygen can be selected.

[0034] The generation of ozone / oxygen-enriched solution can be enhanced or accelerated by lowering the water temperature and increasing the pressure in the tank, such as adding a water cooling system to the system... a cooling liquid coil can be installed in the reaction tank, or an additional cooling water pipe can be installed in the lower part of the reaction tank.

[0035] Water is mixed with ozone / oxygen in the form of mist to increase the contact area and speed up the mixing to generate ozone / oxygen-rich solution. This principle is used to reduce the size of water mist and mist mixture, such as nanometer level. Therefore, the water mist nozzle on the top of the reactor tank can use industrial sonic Nanoscale Atomizer.

[0036] Beneficial effects of the present invention:

[0037] The present invention provides a method for adding ozone / oxygen-rich solution by adopting a dissolved ozone adding system, wherein ozone / oxygen and dissolved water (oxygen-rich effluent water filtered to remove impurities after being treated by the ozone adding process of the present invention) are sent into a reaction tank to be pre-made into a supersaturated high-concentration ozone / oxygen-rich solution, and then the high-concentration ozone / oxygen-rich solution is added into water through a diffuser, the high-concentration ozone / oxygen-rich solution is quickly dissolved with water, and a small amount of ozone / oxygen microbubbles are absorbed by the water flow while the dissolved ozone / dissolved oxygen is added.

[0038] Compared with the prior art, the method of adding ozone / oxygen-enriched solution by using a dissolved ozone adding system of the present invention has the following advantages:

[0039] In the present invention, ozone / oxygen at a certain pressure and dissolved water at a certain pressure (oxygen-rich water filtered to remove impurities after being treated by the ozone addition process of the present invention) are fed into a reaction tank and mixed in a certain proportion in the tank, and a high-concentration ozone / oxygen-rich solution is generated under the pressure in the tank; then, a saturated high-concentration ozone / oxygen-rich solution is sealed between the reaction tank and the control valve through a control valve, so that the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / oxygen-rich solution; finally, the supersaturated high-concentration ozone / oxygen-rich solution is reversely injected into the water to be treated through a diffuser, and the high-concentration ozone / oxygen-rich solution is quickly dissolved with water, and a small amount of ozone / oxygen microbubbles are absorbed by the water flow while the dissolved ozone / dissolved oxygen is added, which greatly reduces the generation of bubbles and can greatly improve the utilization rate of oxygen and accurately control the amount of dissolved ozone.

[0040] The supersaturated high-concentration ozone / oxygen-rich solution is put into the water through a diffuser. Since the water pressure is in a low-pressure state, in order to avoid the ozone / oxygen bubbles in the mixed solution from escaping in large quantities during the pressure drop, the present invention designs this diffuser, the function of which is to stabilize the pressure of the system, maintain the back pressure of the system and inject the high-concentration ozone / oxygen-rich solution into the raw water. The supersaturated high-concentration ozone / oxygen-rich solution is ejected through the small holes of the diffuser, and the high-concentration ozone / oxygen-rich solution quickly dissolves with the water. Due to the pressure drop, a small amount of ozone / oxygen bubbles escape from the high-concentration ozone / oxygen-rich solution, so a small amount of ozone / oxygen bubbles and the high-concentration ozone / oxygen-rich solution are ejected together, generating a strong vortex with the water, which speeds up the dissolution time. Through the application test case, it is proved that the gas-water mixture or mixed solution is converted into a supersaturated high-concentration ozone / oxygen-rich solution, and the high-concentration ozone / oxygen-rich solution and water are both liquids, and the dissolution is completed instantly (liquid-liquid dissolution), which can accurately and stably control the water quality of the water body. Compared with other ozone / oxygen dosing methods, the oxygen utilization rate is high and the user's cost is greatly reduced.

[0041] 3) In the prior art, ozone / oxygen dosing is used. The aeration head or venturi mixer is a component used to project gas into the water. The gas and water are mixed at the contraction section or throat of the venturi nozzle and then ejected through the expansion section. The injection speed of the solution increases, the pressure drops rapidly, and a large amount of ozone / oxygen precipitates from the solution to form large bubbles, and only a small part of the ozone / oxygen dissolves with the water. Due to the different pressures at different heights in the water, ozone / oxygen bubbles escape from the water in open environments such as shallow pools and pools; ozone / oxygen bubbles will burst in the pipe, causing vibration and cavitation, and affecting the accuracy of the amount of dissolved ozone.

[0042] The main function of the diffuser in the present invention is to use small holes and / or gaps to stabilize the pressure of the entire system at more than 2 bar, always seal ozone / oxygen in supersaturated high-concentration ozone / oxygen-rich solution, and generate stable high-concentration ozone / oxygen-rich solution and a small amount of ozone / oxygen bubbles when the pressure is released. A channel for releasing ozone / oxygen-rich solution is opened on half of the side wall of the diffuser, and the channel for releasing ozone / oxygen-rich solution is one or more rows of small holes, one or more rows of gaps, or a combination of small holes and / or gaps; multiple channels for releasing ozone / oxygen-rich solution on the same horizontal plane are evenly arranged at a central angle of less than 180°; two adjacent channels for releasing ozone / oxygen-rich solution on the same horizontal plane are arranged at an acute central angle to ensure that the outlet pressure of high-concentration ozone / oxygen-rich solution is greater than 2 bar and is ejected to mix with the water to be treated. Through the small holes and / or gaps, the inlet pressure and outlet pressure (ideal state) of the pressure mixed liquid are consistent, and are sprayed into the water at a very fast speed. Due to the pressure drop, the pressure difference will cause part of the ozone / oxygen to escape from the solution in the form of microbubbles. Therefore, the mixture of high-concentration ozone / oxygen-rich solution and microbubbles is sprayed together to mix with water. At the same time, since the small holes and / or gaps on each row are located on the same vertical line and are evenly arranged, the pressure difference between the porous side and the non-porous side of the diffuser causes the pressure mixed liquid to form a vortex in the water, further accelerating the dissolution.

[0043] In the present invention, the diffuser used for spraying high-concentration oxygen-rich solution, narrow slits and small holes are used in combination or alone. Small holes or a combination of narrow slits and small holes are designed for small-diameter pipes below DN25; narrow slits or a combination of narrow slits and small holes are more suitable for large-diameter pipes greater than DN25; compared with using only small holes, the contact surface between the solution ejected through the narrow slit and the water is larger; according to the usage scenario, the combination design of small holes and / or narrow slits is also used. The flow of liquid through the small holes is a process of contraction and then diffusion. The state of the liquid in this process is turbulent, which will produce a large pressure loss. Too many small holes will cause more oxygen to precipitate. Compared with small holes, the state of liquid passing through narrow gaps and the pressure is lower than 10bar is laminar flow, and the oxygen precipitation is much less than that of small holes. However, in some occasions, small holes and narrow gaps need to be combined, and a small amount of oxygen needs to be lost to form a certain turbulence to enhance the mixing effect with raw water. Compared with small holes, narrow gaps can also solve the problem of deformation of small holes due to cavitation, which affects the solution injection flow and pressure during system use.

[0044] Compared with the aeration head, venturi mixer, mixing tank and gas-liquid pump in the prior art, the high-concentration ozone / oxygen-rich solution diffuser in the present invention solves the problems of low oxygen utilization rate (dissolution rate), noise, vibration, cavitation and so on; at the same time, the application scenarios of high-concentration ozone / oxygen-rich solution addition are also wider, such as natural lakes, shallow channels, shallow ponds, pipelines, liquid storage tanks, etc.

[0045] 4) The present invention solves the problem that ozone / oxygen is easily precipitated from the liquid when gas and water are mixed at different pressures; the conversion of the gas-water mixture into a supersaturated high-concentration ozone / oxygen-rich solution requires pressure and time. The design of the reaction tank solves these problems, and the high-concentration ozone / oxygen-rich solution remains stable in a closed pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the overall structure of a high-concentration ozone / oxygen-rich solution dosing system in Example 1 of the present invention;

[0047] Figure 2 It is a schematic diagram of the overall structure of a high-concentration ozone / oxygen-rich solution dosing system in Example 2 of the present invention;

[0048] Figure 3 is a schematic diagram of a cutaway top view of the diffuser 6 of the present invention;

[0049] Figure 4 It is a schematic diagram of the main structure of the diffuser 6 in the present invention;

[0050] Figure 5 It is a schematic diagram of the side structure of the diffuser 6 in the present invention.

[0051] In the figure: 1, liquid oxygen storage tank 2, electronic vaporizer / heat exchanger 3, ozone generator 4, water pump 5, reaction tank 6, diffuser 7, water quality meter probe 8, gap 9, small hole 10, pressure regulating valve group 11, dissolved water pipeline 12, ozone / oxygen pipeline 13, ozone / oxygen injection switch 14, control valve 15, high concentration ozone / oxygen-rich solution pipeline A, center angle B, center angle DETAILED DESCRIPTION

[0052] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Example

[0053] The present embodiment provides a method for adding ozone / oxygen-enriched solution using a dissolved ozone adding system, comprising the following steps:

[0054] (1) Establish a high concentration ozone / oxygen-rich solution dosing system; Figure 1 As shown, the high-concentration ozone / oxygen-rich solution dosing system comprises a liquid oxygen storage tank 1, an electronic vaporizer 2, an ozone generator 3, a reaction tank 5 and a diffuser 6 which are connected in sequence, and also comprises a water pump 4 which is connected to the water inlet on the top of the reaction tank 5 through a dissolving water pipeline 11; a pressure regulating valve group 10 is provided on the ozone / oxygen pipeline 12 which is connected to the gas inlet on the top of the reaction tank 5 at the outlet of the ozone generator 3; a small section of the dissolving water pipeline 11 and the ozone / oxygen pipeline 12 each extend into the reaction tank 5; a water mist nozzle (connected to the dissolving water pipeline 11) and an ozone / oxygen nozzle (connected to the ozone / oxygen pipeline 12) are provided on the top of the reaction tank 5; the bottom outlet of the reaction tank 5 is connected to the inlet of the diffuser 6; a pressure regulating valve which can accurately A control valve 14 for controlling flow and pressure; a diffuser 6 is arranged in a water pipeline with water flowing to be treated, located upstream of the water flow, and inserted into the water pipeline perpendicular to the water flow direction; a plurality of channels for releasing ozone / oxygen-rich solution are opened on half of the side wall of the diffuser 6, and the channels for releasing ozone / oxygen-rich solution can generate a back pressure of more than 3 bar and spray the supersaturated oxygen-rich solution into the water to be treated at an outlet pressure greater than 3 bar (reverse spraying into the water upstream of the water flow in the water inlet pipeline), ensuring that there is a pressure difference of more than 2 bar between the outlet pressure of the diffuser and the pressure of the water to be treated; the downstream outlet of the water pipeline with water flowing to be treated is connected to the inlet of the water pump 4 through the dissolved water pipeline 11 (the oxygen-rich outlet water treated by the ozone solution dosing system and dosing process of the present invention is used as water for the water pump 4, i.e., reaction water);

[0055] Ozone / oxygen with a pressure of more than 2 bar and pressurized dissolved water pressurized to a pressure of more than 2 bar by the water pump 4 form a gas-water mixture at the top of the reaction tank 5; the gas-water mixture gradually forms a saturated high-concentration ozone / oxygen-rich solution in the reaction tank 5; the saturated high-concentration ozone / oxygen-rich solution passes through a control valve 14 that can accurately control the flow and pressure on the high-concentration ozone / oxygen-rich solution pipeline 15 between the reaction tank 5 and the diffuser 6 to form a supersaturated high-concentration ozone / oxygen-rich solution; the supersaturated high-concentration ozone / oxygen-rich solution is reversely sprayed into the water upstream of the water flow in the water inlet pipeline through the channel for releasing the ozone / oxygen-rich solution on the diffuser 6;

[0056] (2) High-pressure and low-temperature liquid oxygen is stored in a liquid oxygen storage tank 1; liquid oxygen is released from the bottom of the liquid oxygen storage tank 1 and transported to the electronic vaporizer / heat exchanger 2, which continuously and quantitatively converts liquid oxygen into oxygen; the oxygen is then passed through an ozone generator 3 to produce ozone and oxygen (oxygen is ionized by the ozone generator 3 to produce approximately 6-10% ozone and 90-94% oxygen); the ozone / oxygen is transported to a pressure regulating valve group 10 through a pipeline to adjust the pressure to above 2 bar, and then transported to a reaction tank 5 through a pipeline;

[0057] (3) Ozone / oxygen with a pressure of more than 2 bar enters the top of the reaction tank 5 through the ozone / oxygen pipe 12 (and is sprayed out from the ozone / oxygen nozzle). At the same time, the dissolved water (oxygen-rich water filtered to remove impurities after being treated by the ozone addition process of the present invention) is pressurized to more than 2 bar by the water pump 4 and then sent into the reaction tank 5 from the top of the tank through the dissolved water pipe 11 (entering from the water inlet on the top of the tank and spraying out from the water mist nozzle on the top of the tank) in the form of high-pressure mist, and the pressure in the tank is maintained at more than 2 bar; in the reaction tank 5, the ozone / oxygen is mixed with the pressurized dissolved water to form a gas-liquid mixture with a certain pressure; because the contact area between the water mist and the ozone / oxygen is large, and when the pressure in the tank is increased to the set pressure environment, the ozone / oxygen is rapidly dissolved in the water and a high-concentration ozone / oxygen-rich solution is generated; as the ozone / oxygen is continuously sent in, when the pressure in the reaction tank 5 reaches more than 2 bar, the high-concentration ozone / oxygen-rich solution in the tank is converted into a saturated high-concentration ozone / oxygen-rich solution; the saturated high-concentration ozone / oxygen-rich solution is converted into a saturated high-concentration ozone / oxygen-rich solution. The saturated high-concentration ozone / oxygen-rich solution is pressed through the pipeline at the bottom of the reaction tank 5 to a control valve 14 that can accurately control the flow and pressure. The control valve 14 seals the saturated high-concentration ozone / oxygen-rich solution between the reaction tank 5 and the control valve 14. Due to the continuous pressure in the reaction tank 5, the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / oxygen-rich solution. The control valve 14 is opened, and the supersaturated high-concentration ozone / oxygen-rich solution passes through the valve core in the control valve 14 and is transported to the diffuser 6 through the pipeline. The channel for releasing the ozone / oxygen-rich solution, i.e., the small hole 9 and / or the gap 8 designed on the diffuser 6, forms a mixed solution of high-concentration ozone / oxygen-rich solution and a small amount of ozone / oxygen microbubbles, which is reversely sprayed into the water to be treated (raw water). The high-concentration ozone / oxygen-rich solution quickly dissolves with the water, and while the dissolved ozone / dissolved oxygen is added, a small amount of ozone / oxygen microbubbles are absorbed by the water flow; while greatly reducing the generation of bubbles, it can greatly improve the utilization rate of oxygen and accurately control the amount of dissolved ozone.

[0058] (4) A water quality meter probe 7 is arranged downstream of the water flow in the water pipe. The water quality meter probe 7 is connected to a signal receiver, and the signal receiver is connected to the input end of a PLC controller; the output end of the PLC controller is connected to a control valve 14; the water quality meter probe transmits a signal to the signal receiver in real time, and the signal received by the signal receiver is processed by the PLC to control the opening size of the control valve 14, so as to control the amount of high-concentration ozone / oxygen-rich solution added, thereby achieving the amount of dissolved ozone that the user wishes to control.

[0059] like Figure 3-Figure 5As shown, the diffuser 6 is a hollow long cylindrical object with one half of the cross section being a polygon and the other half being an arc-shaped and closed at one end. A plurality of channels for releasing ozone / oxygen-rich solution are opened on half of the side wall on one side of the polygon; the channels for releasing ozone / oxygen-rich solution are a combination of small holes and slits, with a row of small holes 9 in the middle and a row of slits 8 on each side; two adjacent channels for releasing ozone / oxygen-rich solution (small holes 9 and / or slits 8) on the same horizontal plane are arranged at an acute central angle (that is, the central angle formed by the line connecting the two adjacent channels for releasing ozone / oxygen-rich solution and the center point is an acute angle, such as Figure 3 The two central angles A and B are both acute angles) to ensure that the outlet pressure of the high-concentration ozone / oxygen-rich solution is greater than 2 bar and is ejected to mix with the water to be treated.

[0060] like Figure 5 As shown, the diffuser 6 is arranged in a water pipe with flowing water to be treated, and is located upstream of the water flow; the diffuser 6 is inserted into the water pipe perpendicular to the water flow direction, and the side of the diffuser 6 with small holes 9 and narrow gaps 8 is facing the upstream of the water flow, so that the high-concentration oxygen-rich solution in the diffuser 6 can be sprayed out from the small holes 9 and the narrow gaps 8 in the reverse direction toward the water flow. When the high-concentration oxygen-rich solution is sprayed out and mixed with water, due to the low pressure on the other side, a vortex can be generated to further enhance the mixing effect.

[0061] The small holes 9 and narrow gaps 8 on the diffuser 6 can generate a back pressure of more than 3 bar, so that the high-concentration oxygen-rich solution is ejected from the small holes 9 and / or the gaps 8 in the reverse direction toward the water flow at an outlet pressure greater than 3 bar, and is ejected into the water to be treated in the water pipe, ensuring that there is a pressure difference of more than 2 bar between the outlet pressure of the diffuser 6 and the pressure of the water to be treated.

[0062] The working principle of the method of adding ozone / oxygen-enriched solution by using the dissolved ozone dosing system of this embodiment is as follows: high-pressure and low-temperature liquid oxygen is stored in the liquid oxygen storage tank 1; liquid oxygen comes out from the bottom of the liquid oxygen storage tank 1 and is transported to the electronic vaporizer 2, and the electronic vaporizer 2 continuously and quantitatively converts liquid oxygen into oxygen; oxygen is produced by the ozone generator 3 to produce ozone and oxygen, and the ozone / oxygen is transported to the pressure regulating valve group 10 through the pipeline to adjust the pressure to more than 2 bar; ozone / oxygen with a pressure of more than 2 bar is sent to the reaction tank 5 from the top of the tank (sprayed from the ozone / oxygen nozzle) through the ozone / oxygen pipeline 12, and the air in the tank is discharged; at the same time, the dissolved water (oxygen-enriched water filtered to remove impurities after being treated by the ozone dosing process of the present invention) is pressurized to more than 2 bar by the water pump 4, and then sent to the reaction tank 5 from the top of the tank (sprayed from the water mist nozzle) in the form of high-pressure mist through the dissolved water pipeline 11, and the pressure in the tank is maintained at more than 2 bar; in the reaction tank 5 In the process, ozone / oxygen is mixed with pressurized dissolved water mist to form a gas-liquid mixture with a certain pressure; because the contact area between water mist and ozone / oxygen is large, and the pressure in the tank is raised to the set pressure environment, ozone / oxygen quickly dissolves in water and generates a high-concentration ozone / oxygen-rich solution; as ozone / oxygen is continuously introduced, when the pressure in the reaction tank continuously reaches more than 2 bar, the high-concentration ozone / oxygen-rich solution in the tank is converted into a saturated high-concentration ozone / oxygen-rich solution; the saturated high-concentration ozone / oxygen-rich solution is pressed through the pipeline at the bottom of the reaction tank 5 to a control valve 14 that can accurately control the flow and pressure, and the control valve 14 seals the saturated high-concentration ozone / oxygen-rich solution between the reaction tank 5 and the control valve 14. 5, the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / oxygen-rich solution; the control valve 14 is opened, the supersaturated high-concentration ozone / oxygen-rich solution passes through the valve core in the control valve 14, and is transported to the diffuser 6 through the pipeline, and the high-concentration ozone / oxygen-rich solution and a small amount of ozone / oxygen microbubbles are formed through the channel designed on the diffuser 6, that is, the small hole 9 and / or the gap 8. The mixed liquid is sprayed into the water in reverse, and the high-concentration ozone / oxygen-rich solution quickly dissolves with the water (meets the disinfected substances in the water and starts to disinfect), and while the dissolved ozone / dissolved oxygen is added (increasing the amount of dissolved ozone / dissolved oxygen in the water), a small amount of ozone / oxygen microbubbles are absorbed by the water flow to achieve the purpose of increasing the dissolved ozone. The water quality meter probe 7 is set downstream of the water flow in the water pipeline, and transmits the signal to the signal receiver on the control valve 14 in real time. The signal received by the signal receiver is processed by the PLC to control the opening size of the control valve 14 to control the amount of high-concentration ozone / oxygen-rich solution, so as to achieve the pH that the user wants to control.

[0063] A liquid level meter (not shown) with signal output is provided outside the reaction tank 5. The liquid level signal of the high-concentration ozone / oxygen-rich solution in the tank is controlled by the PLC processor to control the water pump 4 and the switch 13 for ozone / oxygen injection. When the liquid level drops, the PLC processor controls the water pump 4 and the switch 13 for ozone / oxygen injection to open, generating a high-concentration ozone / oxygen-rich solution to supplement the amount of high-concentration ozone / oxygen-rich solution that is neutralized and consumed by the water.

[0064] Ozone / oxygen at a certain pressure is mixed with pressurized dissolved water to form a pressurized gas-water mixture, which is converted into a saturated high-concentration ozone / oxygen-rich solution in the reaction tank 5; the saturated high-concentration ozone / oxygen-rich solution is sealed between the reaction tank 5 and the control valve 14 to form a supersaturated high-concentration ozone / oxygen-rich solution; the supersaturated high-concentration ozone / oxygen-rich solution passes through the diffuser 6 ( Figure 3-Figure 5 As shown) is put into the water (compared with saturated high concentration ozone / oxygen-rich solution, supersaturated high concentration ozone / oxygen-rich solution can reduce the generation of bubbles); since the water pressure is in a low pressure state, in order to prevent the ozone / oxygen bubbles in the mixed liquid from escaping in large quantities during the pressure drop, the present invention designs this diffuser 6 ( Figure 3-Figure 5 As shown in the figure, the function of the diffuser 6 is to stabilize the pressure of the system, maintain the back pressure of the system and inject the high concentration ozone / oxygen-rich solution into the raw water. The supersaturated high concentration ozone / oxygen-rich solution is ejected through the small hole of the diffuser 6, and the high concentration ozone / oxygen-rich solution quickly dissolves with the water. Due to the pressure drop, a small amount of ozone / oxygen bubbles escape from the high concentration ozone / oxygen-rich solution, so a small amount of ozone / oxygen bubbles and the high concentration ozone / oxygen-rich solution are ejected together, generating a strong vortex with the water, accelerating the dissolution speed and shortening the dissolution time. Through the application test case, it is proved that the gas-water mixture or mixed solution is converted into a supersaturated high concentration ozone / oxygen-rich solution (the effective utilization rate of oxygen reaches more than 99%), and the dissolution of the high concentration ozone / oxygen-rich solution and water is liquid-liquid, and the dissolution reaction time is completed in an instant, which can accurately and stably control the fluctuation of the dissolved ozone amount. Compared with the ozone / oxygen addition method, the oxygen utilization rate is high and the user's use cost is greatly reduced.

[0065] The function of the diffuser 6 is to not only inject the high-concentration oxygen-rich solution into the water, but also maintain the pressure of the entire system to prevent oxygen from escaping from the high-concentration oxygen-rich solution. The small holes 9 and / or gaps 8 on the diffuser 6 maintain the system back pressure greater than 2 bar, and the supersaturated high-concentration ozone / oxygen-rich solution is reversely sprayed into the water to be treated through the small holes 9 and / or gaps 8 on the diffuser 6. While the ozone / oxygen bubbles are absorbed by the water vortex, the high-concentration ozone / oxygen-rich solution can quickly dissolve with the water. This system back pressure will maintain the entire conversion process and pipeline pressure, which can prevent ozone / oxygen bubbles from escaping from the high-concentration ozone / oxygen-rich solution due to pressure drop, and prevent the high-concentration ozone / oxygen-rich solution from returning to the state of a gas-water mixture.

[0066] The diffuser 6 is a hollow polygonal long cylindrical object with one end closed, inserted perpendicular to the direction of the water flow, and the side of the diffuser 6 with small holes 9 and / or gaps 8 faces the upstream of the water flow (see Figure 4 ), the top of the diffuser 6 is open (the unsealed end), which allows the supersaturated high-concentration ozone / oxygen-rich solution to enter. The supersaturated high-concentration ozone / oxygen-rich solution is sprayed out from the small hole 9 and / or the gap 8 in the reverse direction to the water flow and then mixed with the water. The process of the solution entering the water is a depressurization process. In the process of pressure balance, the ozone pressure solution and a small amount of ozone / oxygen bubbles form a vortex with the upstream and downstream of the water flow at the moment of being sprayed through the small hole 9 and / or the gap 8. The small bubbles are absorbed by the water flow, and the high-concentration ozone / oxygen-rich solution reacts with the water. The whole process is an enhanced mixing and rapid dissolution mixing process.

[0067] In summary, the present invention provides a complete method for adding ozone / oxygen-enriched solution using a dissolved ozone dosing system, in which oxygen and the pressure of filtered water in a tank are reacted to generate a supersaturated high-concentration ozone / oxygen-enriched solution, and the supersaturated high-concentration ozone / oxygen-enriched solution is then added to water through a diffuser to adjust the water quality.

[0068] The prior art uses ozone gas injection. The venturi nozzle is a component used to project gas into the water. The gas and water are mixed at the contraction section or throat of the venturi nozzle and then ejected through the expansion section. The injection speed of the solution increases, the pressure drops rapidly, and a large amount of ozone / oxygen precipitates from the solution to form large bubbles. Only a small part of the ozone / oxygen participates in the disinfection. Due to the different pressures at different heights in the water, ozone / oxygen bubbles escape from the water in open environments such as shallow pools and pools; ozone / oxygen bubbles will burst in the pipe, causing vibration and cavitation, and affecting the control accuracy of the amount of dissolved ozone.

[0069] The main function of the diffuser 6 in the present invention is to utilize Figure 3-Figure 5 The small holes 9 and gaps 8 shown in the figure stabilize the pressure of the entire system at more than 2 bar, always sealing the ozone / oxygen in the supersaturated high-concentration ozone / oxygen-rich solution, and generating a stable high-concentration ozone / oxygen-rich solution and a small amount of ozone / oxygen bubbles when the pressure is released. Figure 3-Figure 5As shown, a channel for releasing ozone / oxygen-rich solution is opened on half of the side wall of the diffuser 6, and the channel for releasing ozone / oxygen-rich solution is a combination of a row of small holes 9 and multiple rows of gaps 8 (a combination of small holes and gaps); multiple channels for releasing ozone / oxygen-rich solution on the same horizontal plane are evenly arranged at a central angle less than 180°; two adjacent channels for releasing ozone / oxygen-rich solution on the same horizontal plane are arranged at an acute central angle to ensure that the outlet pressure of high-concentration ozone / oxygen-rich solution is greater than 2 bar and is ejected to mix with the water to be treated. Through the small holes 9 and the gaps 8, the inlet pressure and outlet pressure (ideal state) of the pressure mixed liquid (a mixture of high-concentration ozone / oxygen-rich solution and microbubbles with a certain pressure) are consistent, and are ejected into the water at a very fast speed. Due to the pressure drop, the pressure difference will cause part of the ozone / oxygen to escape from the solution in the form of microbubbles. Therefore, the mixture of high-concentration ozone / oxygen-rich solution and microbubbles is sprayed together to mix with water. At the same time, since the small holes 9 or gaps 8 on each row are located on the same vertical line and are evenly arranged, there is a pressure difference between the porous side and the non-porous side of the diffuser 6, and the pressure mixed liquid forms a vortex in the water, further accelerating the dissolution.

[0070] Compared with the prior art, the high-concentration ozone / oxygen-rich solution diffuser in the present invention solves the problems of low ozone / oxygen utilization rate (dissolution rate), noise, vibration, cavitation, etc.; at the same time, the application scenarios of high-concentration ozone / oxygen-rich solution addition are also wider, such as natural lakes, shallow channels, shallow ponds, pipelines, liquid storage tanks, etc. Example

[0071] The method of adding ozone / oxygen-enriched solution by using a dissolved ozone dosing system in this embodiment is basically the same as the method of adding ozone / oxygen-enriched solution by using a dissolved ozone dosing system in Example 1; the difference is that: the diffuser 6 is arranged in a water pool without water flow to be treated, and a plurality of channels for releasing ozone / oxygen-enriched solution are opened on the side walls on both sides of the diffuser 6; the channels for releasing ozone / oxygen-enriched solution are a combination of small holes and narrow gaps.

[0072] like Figure 2 As shown, the diffuser 6 is arranged in a water pool without water flow to be treated, and multiple circles of small holes and narrow gaps (a row of small holes 9 and a row of narrow gaps 8 are arranged alternately) are opened on the entire cylindrical side wall of the diffuser 6 to achieve 360° delivery.

[0073] The channel for releasing ozone / oxygen-rich solution (small hole 9 and narrow gap 8) can generate a back pressure of more than 3 bar and spray the supersaturated oxygen-rich solution into the water to be treated in the pool at an outlet pressure greater than 3 bar, ensuring a pressure difference of more than 2 bar between the outlet pressure of the diffuser and the pressure of the water to be treated.

[0074] The water outlet of the water pool without water flow to be treated is connected to the inlet of the water pump 4 through the dissolved water pipeline 11 (the oxygen-enriched water treated by the ozone solution dosing system and dosing process of the present invention is used as water for the water pump 4). Example

[0075] The method of adding ozone / oxygen-rich solution by using a dissolved ozone dosing system in this embodiment is basically the same as the method of adding ozone / oxygen-rich solution by using a dissolved ozone dosing system in Example 1; the difference is that: the liquid oxygen storage tank 1 and the electronic vaporizer 2 are not provided, but are replaced by an air separation device (air separation oxygen production device), oxygen is produced by the air separation device, and the oxygen is then passed through the ozone generator 3 to produce ozone and oxygen; the high-concentration ozone / oxygen-rich solution pipeline 15 is a large-diameter pipeline greater than DN25, and the channel for releasing the ozone / oxygen-rich solution is a slit, with a row of slits 8 in the middle and a row of slits 8 on each side. Example

[0076] The method of adding ozone / oxygen-rich solution by using a dissolved ozone dosing system in this embodiment is basically the same as the method of adding ozone / oxygen-rich solution by using a dissolved ozone dosing system in Example 1; the difference is that: the electronic vaporizer 2 is replaced by a fin heat exchanger; the high-concentration ozone / oxygen-rich solution pipeline 15 is a small-diameter pipeline of DN25, and the channel for releasing ozone / oxygen-rich solution is a combination of small holes and narrow gaps, with a row of narrow gaps 8 in the middle and a row of small holes 9 on each side. Example

[0077] The method of adding ozone / oxygen-rich solution by using a dissolved ozone dosing system in this embodiment is basically the same as the method of adding ozone / oxygen-rich solution by using a dissolved ozone dosing system in Example 1; the difference is that: the liquid oxygen storage tank 1 and the electronic vaporizer 2 are not there, but are replaced by a dewar tank or a steel cylinder. After the oxygen is released from the dewar tank or the steel cylinder, the ozone / oxygen produced by the ozone generator is adjusted to a pressure of more than 2 bar through the pressure regulating valve group 10; the ozone / oxygen with a pressure above 2 bar is sent from the top of the tank to the reaction tank 5 through the ozone / oxygen pipeline 12, and the air in the tank is discharged; at the same time, the dissolved water (oxygen-rich water that has been filtered to remove impurities after being treated by the ozone dosing process of the present invention) is pressurized to more than 2 bar by the water pump 4, and then sent from the top of the tank to the reaction tank 5 in the form of high-pressure mist through the dissolved water pipeline 11, and the pressure in the tank is maintained at more than 2 bar; in the reaction tank 5 In the reaction tank, ozone / oxygen is mixed with pressurized dissolved water mist to form a gas-liquid mixture with a certain pressure; because the contact area between water mist and ozone / oxygen is large, and when the pressure in the tank is raised to the set pressure environment, ozone / oxygen quickly dissolves in water and generates a high-concentration ozone / oxygen-rich solution; as ozone / oxygen is continuously introduced, when the pressure in the reaction tank reaches more than 2 bar, the high-concentration ozone / oxygen-rich solution in the tank is converted into a saturated high-concentration ozone / oxygen-rich solution; the saturated high-concentration ozone / oxygen-rich solution is pressurized through the pipeline at the bottom of the reaction tank 5 to a control valve 14 that can accurately control the flow and pressure, and the control valve 14 seals the saturated high-concentration ozone / oxygen-rich solution in the reaction tank. Between the reaction tank 5 and the control valve 14, due to the continuous pressure in the reaction tank 5, the saturated high-concentration ozone / oxygen-rich solution becomes a supersaturated high-concentration ozone / oxygen-rich solution; the control valve 14 is opened, and the supersaturated high-concentration ozone / oxygen-rich solution passes through the valve core in the control valve 14 and is transported to the diffuser 6 through the pipeline; the supersaturated high-concentration ozone / oxygen-rich solution passes through the small holes and / or gaps in the diffuser 6 to form a mixed solution of high-concentration ozone / oxygen-rich solution and a small amount of ozone / oxygen microbubbles, which is reversely sprayed into the water, and the high-concentration ozone / oxygen-rich solution quickly dissolves with the water (meets the disinfected substances in the water and starts disinfection treatment), and a small amount of ozone / oxygen microbubbles are absorbed by the water flow.

Claims

1. A method for adding ozone and oxygen-enriched solution using a dissolved ozone dosing system, characterized in that: The steps include: (1) Establishing a dissolved ozone dosing system; the dissolved ozone dosing system comprises a reaction tank and a diffuser, and also comprises ozone and oxygen pipelines and a dissolving water pipeline; a water mist nozzle and an ozone and oxygen nozzle are arranged on the top of the reaction tank; a water pump is arranged on the dissolving water pipeline; the water pump outlet is connected to the water inlet and the water mist nozzle on the top of the reaction tank through the dissolving water pipeline; a pressure regulating valve group is arranged on the ozone and oxygen pipeline; the outlet of the pressure regulating valve group is connected to the ozone and oxygen inlet and the ozone and oxygen nozzle on the top of the reaction tank through the ozone and oxygen pipeline; the outlet at the bottom of the reaction tank is connected to the inlet of the diffuser; a control valve capable of accurately controlling the flow rate and pressure is arranged on the high-concentration ozone and oxygen-rich solution pipeline between the outlet at the bottom of the reaction tank and the inlet of the diffuser; the diffuser is arranged in the water to be treated; The diffuser is a hollow cylindrical object with one end open and the other end closed; a channel for releasing ozone and oxygen-rich solution is opened on the cylindrical side wall of the diffuser; the channel for releasing ozone and oxygen-rich solution is a combination of small holes and narrow gaps; the channel for releasing ozone and oxygen-rich solution can generate a certain back pressure and make the supersaturated oxygen-rich solution spray into the water to be treated at a certain outlet pressure, ensuring that there is a pressure difference of more than 2 bar between the outlet pressure of the diffuser and the pressure of the water to be treated; the ozone and oxygen-rich solution are high-concentration ozone and oxygen-rich solutions; the channel for releasing ozone and oxygen-rich solution can generate a back pressure of more than 3 bar and make the supersaturated ozone and oxygen-rich solution spray into the water to be treated at an outlet pressure greater than 3 bar; the diffuser back pressure is greater than 3 bar, and the pressure of the entire system is maintained at more than 3 bar; The diffuser is arranged in the raw water or water pipeline with flowing water to be treated, and is located upstream of the water flow. The diffuser is a hollow long cylindrical object with one half of the cross section being polygonal and the other half being arc-shaped and one end being closed. A plurality of channels for releasing ozone and oxygen-rich solution are opened on half of the side wall on one side of the polygon; the channels for releasing ozone and oxygen-rich solution are a combination of one or more rows of small holes and one or more rows of narrow gaps; or a combination of one or more small holes and one or more narrow gaps; the diffuser is inserted into the raw water perpendicular to the direction of the water flow, and the side of the diffuser with the combination of small holes and narrow gaps faces the upstream of the water flow, so that the high-concentration ozone and oxygen-rich solution in the diffuser can be sprayed out from the combination of small holes and narrow gaps in the reverse direction toward the water flow; The small holes or narrow slits in each row are located on the same vertical line and are evenly spaced; Multiple channels for releasing ozone and oxygen-enriched solution on the same horizontal plane are evenly arranged at a central angle less than 180°; two adjacent channels for releasing ozone and oxygen-enriched solution on the same horizontal plane are arranged at an acute central angle; When the liquid passes through a narrow gap and the pressure is less than 10 bar, the state is laminar flow, and the oxygen precipitation is relatively less than that of small holes; (2) Ozone and oxygen are adjusted to a certain pressure through a pressure regulating valve group and transported to the reaction tank through a pipeline; (3) Ozone and oxygen with a certain pressure enter the top of the reaction tank through the ozone and oxygen pipelines. At the same time, the dissolved water is pressurized to a certain pressure by a water pump and then sent into the reaction tank from the top of the tank through the dissolved water pipeline in the form of high-pressure mist, and the pressure in the tank is maintained at a certain pressure; in the reaction tank, ozone and oxygen are mixed with the pressurized dissolved water to form a gas-liquid mixture with a certain pressure; the contact area between the water mist and the ozone and oxygen is large, and the pressure in the tank is increased to a certain pressure, and the ozone and oxygen are quickly dissolved in the water to generate high-concentration ozone and oxygen-rich solutions; as ozone and oxygen are continuously sent in, or as water mist with a certain pressure is continuously entered into the tank, the pressure in the tank is continuously increased. When the pressure in the reaction tank reaches a certain pressure, the high-concentration ozone and oxygen-rich solutions in the tank are converted into saturated high-concentration ozone and rich solutions. Oxygen solution; saturated high-concentration ozone and oxygen-rich solution are pressed through the pipeline at the bottom of the reaction tank to a control valve that can accurately control the flow and pressure. The control valve seals the saturated high-concentration ozone and oxygen-rich solution between the reaction tank and the control valve. Due to the continuous pressure in the reaction tank, the saturated high-concentration ozone and oxygen-rich solution become supersaturated high-concentration ozone and oxygen-rich solution; open the control valve, the supersaturated high-concentration ozone and oxygen-rich solution pass through the valve core in the control valve, and are transported to the diffuser through the pipeline. The channel for releasing ozone and oxygen-rich solution on the diffuser, that is, the combination of small holes and narrow gaps, forms a mixed solution of high-concentration ozone and oxygen-rich solution and a small amount of ozone and oxygen microbubbles, which is reversely sprayed into the water to be treated. The high-concentration ozone and oxygen-rich solution quickly dissolves with the water, and a small amount of ozone and oxygen microbubbles are absorbed by the water flow; (4) An online water quality detector is set at the downstream of the water flow in the raw water pipeline. The online water quality detector is connected to a signal receiver, and the signal receiver is connected to the input end of a PLC controller; the output end of the PLC controller is connected to a control valve; the online water quality detector transmits a signal to the signal receiver in real time, and the signal received by the signal receiver is processed by the PLC to control the opening size of the control valve, so as to control the amount of high-concentration ozone and oxygen-rich solution released.

2. The method of adding ozone and oxygen-enriched solution using a dissolved ozone dosing system as claimed in claim 1, characterized in that: The inlet of the mixed water pipeline is connected to the oxygen-enriched water outlet after the water to be treated is treated by adding ozone solution.

3. The method for adding ozone and oxygen-enriched solution using a dissolved ozone dosing system as claimed in claim 1 or 2, characterized in that: The high-concentration ozone and oxygen-rich solution dosing system also includes a liquid oxygen storage tank, an electronic vaporizer or heat exchanger, and an ozone generator connected in sequence; or, it also includes an air separation device and an ozone generator connected in sequence; or, it also includes a Dewar tank or a steel cylinder and an ozone generator connected in sequence; the ozone generator outlet is connected to the ozone and oxygen pipeline inlet; a pressure regulating valve group is provided on the ozone and oxygen pipeline connected between the ozone generator outlet and the gas inlet on the top of the reaction tank; In the step (2), high-pressure and low-temperature liquid oxygen is stored in a liquid oxygen storage tank, and the liquid oxygen is released from the bottom of the liquid oxygen storage tank and transported to an electronic vaporizer or a heat exchanger, and the electronic vaporizer or the heat exchanger continuously and quantitatively heats and vaporizes the liquid oxygen to convert it into gaseous oxygen; or, oxygen is generated by an air separation device; or, oxygen is stored in a dewar tank or a steel cylinder, and the oxygen is released from the dewar tank or the steel cylinder; the oxygen is transported to an ozone generator through a pipeline to generate ozone and oxygen; the ozone and oxygen are transported to a pressure regulating valve group through a pipeline to adjust the pressure to more than 2 bar, and then transported to a reaction tank through a pipeline.

4. The method for adding ozone and oxygen-enriched solution using a dissolved ozone dosing system as claimed in claim 1 or 2, characterized in that: In the step (3), ozone and oxygen with a pressure of more than 2 bar enter the top of the reaction tank through the ozone and oxygen pipelines. At the same time, the dissolved water is pressurized to more than 2 bar by a water pump and then sent into the reaction tank from the top of the tank through the dissolved water pipeline in the form of high-pressure mist, and the pressure in the tank is maintained at more than 2 bar.

5. The method for adding ozone and oxygen-rich solution using a dissolved ozone dosing system as claimed in claim 1 or 2, characterized in that: The volume ratio of ozone and oxygen with a pressure of more than 2 bar to dissolved water is not less than 1:

10.

6. The method for adding ozone and oxygen-enriched solution using a dissolved ozone dosing system as claimed in claim 1 or 2, characterized in that: A cooling liquid coil is arranged in the reaction tank, or a supplementary cooling water pipe for adding cooling water is arranged in the middle and lower part of the reaction tank; the water mist nozzle on the top of the reaction tank is an industrial sonic nano-level atomizer.

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