Sewage treatment equipment

Abstract

Due to rapid development of the fine chemical industry, types and sources of pollutants are gradually complex. The sewage treatment equipment comprises a plasma generation source, an oxygen active particle generation assembly, a hydrodynamic cavitation reaction assembly and a power supply assembly which are connected in sequence, the plasma generation source is connected with the power supply assembly, and the oxygen active particle generation assembly is connected with the power supply assembly; the oxygen active particle generation assembly comprises an oxygen active particle generator, the oxygen active particle generator is provided with an air inlet and an oxygen active particle outlet, the hydrodynamic cavitation reaction assembly comprises a water inlet, a booster pump, a hydrodynamic cavitation reactor, a flash reactor and a water outlet which are communicated in sequence, and the water inlet is communicated with the booster pump through a first pipeline; the booster pump, the hydrodynamic cavitation reactor, the flash reactor and the water outlet are communicated through a second pipeline, a plurality of sensors are arranged on the second pipeline, and the hydrodynamic cavitation reactor is communicated with the oxygen active particle outlet. Harmful microorganisms are efficiently killed; organic pollutants are efficiently degraded.

Description

Technical Field

[0001] The present application belongs to the field of water treatment technology, and in particular relates to a sewage treatment device. Background Art

[0002] Existing water treatment technologies have some shortcomings in practical applications, mainly including the following aspects:

[0003] (1) High energy consumption: Traditional water treatment methods usually require a lot of energy support, such as electricity and chemicals. For example, the activated sludge method needs to maintain a constant temperature and oxygen supply, which consumes a lot of electricity and oxygen. This high energy consumption not only increases operating costs, but also creates an additional burden on the environment.

[0004] (2) Limitations of organic matter treatment: Some organic substances are difficult to degrade and toxic, and traditional biological treatment methods are often unable to effectively degrade these organic substances. For example, organic pollutants such as heavy metal ions, organic solvents and pesticides are difficult to remove in traditional treatment processes and may even be converted into more toxic substances through the degradation process.

[0005] (3) Fluctuation of treatment effect: The treatment effect of traditional water treatment methods is often greatly affected by water quality fluctuations and changes in influent water quality. When the influent water quality changes greatly, the treatment effect may not be able to stably meet the design requirements, resulting in unstable discharge water quality or failure to meet standard requirements.

[0006] (4) Slow treatment speed: Some traditional water treatment methods, such as biodegradation and chemical precipitation, have slow treatment speeds and require a long treatment time to reach discharge standards. This may not be efficient enough for large-scale treatment and urgent treatment.

[0007] (5) Generation of waste residues and by-products: Some traditional treatment methods will generate a large amount of waste residues and by-products, such as biological sludge, sludge dehydration liquid and chemical residues. The treatment and disposal of these waste residues will increase the subsequent treatment costs and may cause secondary pollution to the environment.

[0008] In summary, existing water treatment technologies can solve water treatment problems to a certain extent, but there are still many problems. At the same time, due to the rapid development of the fine chemical industry, the types and sources of pollutants are becoming increasingly complex. Therefore, we need to continuously explore and develop new water treatment technologies and develop corresponding water treatment equipment to improve sewage treatment efficiency, reduce energy consumption and reduce the impact on the environment. Summary of the invention

[0009] 1. Technical problems to be solved

[0010] Based on the existing water treatment technology, water treatment problems can be solved to a certain extent, but there are still many problems. At the same time, due to the rapid development of the fine chemical industry, the types and sources of pollutants are becoming increasingly complex, and this application provides a sewage treatment equipment.

[0011] 2 Technical Solution

[0012] In order to achieve the above-mentioned purpose, the present application provides a sewage treatment equipment, including a plasma generating source, an oxygen active particle generating component, a hydrodynamic cavitation reaction component and a power supply component connected in sequence, the plasma generating source is connected to the power supply component, and the oxygen active particle generating component is connected to the power supply component; the oxygen active particle generating component includes an oxygen active particle generator, and the oxygen active particle generator is provided with an air inlet and an oxygen active particle outlet; the hydrodynamic cavitation reaction component includes a water inlet, a booster pump, a hydrodynamic cavitation reactor, a flash reactor and a water outlet connected in sequence, the water inlet is connected to the booster pump through a first pipeline, the booster pump, the hydrodynamic cavitation reactor, the flash reactor and the water outlet are connected through a second pipeline, a plurality of sensors are provided on the second pipeline, and the hydrodynamic cavitation reactor is connected to the oxygen active particle outlet.

[0013] Another embodiment provided by the present application is that the sensor is connected to a flow performance monitor, and the flow performance monitor is used to monitor the water flow rate of the equipment, the inlet and outlet pressures of the hydraulic cavitation reactor, and the liquid flow temperature.

[0014] Another implementation manner provided by the present application is that the sensor includes a flow sensor, a temperature sensor and a pressure sensor.

[0015] Another embodiment provided by the present application is that the plasma generation source, the oxygen active particle generation component and the hydrodynamic cavitation reaction component are arranged in sequence from top to bottom.

[0016] Another embodiment provided by the present application is: it also includes a box body, the water inlet and the water outlet are arranged on the box body, the plasma generating source is arranged on the highest layer of the box body, the oxygen active particle generating assembly is arranged on the rear side of the middle layer of the box body, and the hydrodynamic cavitation reaction assembly is arranged on the lowest layer of the box body.

[0017] Another implementation manner provided by the present application is: a start switch is provided on the box body, and the start switch controls the sewage treatment equipment to start working or stop working.

[0018] Another embodiment provided by the present application is: the plasma generating source can generate high-frequency and high-voltage pulse discharge, the high-frequency and high-voltage pulse discharge frequency is not less than 0.1 to 10 kHz, the high-frequency and high-voltage pulse discharge voltage maximum value is not less than 20 kV, and the high-frequency and high-voltage pulse discharge pulse width is 500 to 15000 ns.

[0019] Another implementation manner provided by the present application is: heat dissipation holes are arranged on the surface of the box body, and a ventilation fan is arranged inside the box body.

[0020] Another embodiment provided by the present application is that an electromagnetic isolation protective cover is arranged outside the plasma generating source.

[0021] Another embodiment provided by the present application is that the hydraulic cavitation reactor uses a fluid device with a venturi structure to induce hydraulic cavitation, and the fluid device has an air intake port at the throat.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the sewage treatment equipment provided by this application has the following beneficial effects:

[0024] The sewage treatment equipment provided in the present application is a sewage treatment equipment based on cavitation plasma technology, which utilizes plasma technology to generate active oxygen particles, and cooperates with hydraulic cavitation to promote the active oxygen particles to degrade pollutants in the water and kill harmful microorganisms.

[0025] The sewage treatment equipment provided in the present application utilizes the characteristics of strong vortex generated by hydraulic cavitation to enable active substances such as hydroxyl radicals to fully contact with pollutants in the water body.

[0026] The sewage treatment equipment provided in the present application utilizes the strong oxidizing properties of active substances such as hydroxyl radicals to quickly degrade pollutants in the water or kill harmful microorganisms in the water.

[0027] The sewage treatment equipment provided in this application is for water bodies, can effectively kill harmful microorganisms and degrade organic pollutants, thereby achieving sewage treatment.

[0028] The sewage treatment equipment provided in this application does not require additional chemical agents and gas supply, and can achieve the water treatment process only by relying on electrical energy and hydraulic equipment with special geometric structures. At the same time, there are almost no harmful by-products, avoiding secondary pollution of the water body.

[0029] The sewage treatment equipment provided by the present application, hydroxyl radical is a super strong oxidant that can almost non-selectively degrade pollutants in water and kill harmful microorganisms.

[0030] The sewage treatment equipment provided in this application is a new type of sewage treatment device, which can be used as an independent wastewater treatment equipment, and can also be used in conjunction with other water treatment equipment to construct a sewage treatment system with a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the sewage treatment equipment of this application;

[0032] Figure 2 It is a schematic diagram of the structure of the oxygen active particle generating assembly of the present application;

[0033] Figure 3 It is a schematic diagram of the structure of the hydraulic cavitation reaction component of the present application. DETAILED DESCRIPTION

[0034] Hereinafter, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without violating the principles of the present application, the features in the various embodiments can be combined to obtain new implementations, or certain features in certain embodiments can be replaced to obtain other preferred implementations.

[0035] Cavitation plasma technology is a new type of advanced oxidation process (AOP), the core of which is to use the strong oxidizing property of hydroxyl radicals (·OH) to degrade pollutants in water. 0 =2.8V, with extremely strong oxidation ability, it can degrade pollutants almost non-selectively. Advanced oxidation methods have become a research hotspot in the field of water treatment technology because of their wide application range, high treatment efficiency and environmental friendliness, and no need for additional chemical agents and treatment of reaction by-products.

[0036] See also Figures 1 to 3The present application provides a sewage treatment device, comprising a plasma generating source 1, an oxygen active particle generating component, a hydrodynamic cavitation reaction component and a power supply component connected in sequence, wherein the plasma generating source 1 is connected to the power supply component, and the oxygen active particle generating component is connected to the power supply component; the oxygen active particle generating component comprises an oxygen active particle generator 2, and the oxygen active particle generator 2 is provided with an air inlet 3 and an oxygen active particle outlet 4; the hydrodynamic cavitation reaction component comprises a water inlet 5, a booster pump 6, a hydrodynamic cavitation reactor 7, a flash reactor 8 and a water outlet 9 connected in sequence, the water inlet 5 is connected to the booster pump 6 through a first pipeline 10, the booster pump 6, the hydrodynamic cavitation reactor 7, the flash reactor 8 and the water outlet 9 are connected through a second pipeline, and a plurality of sensors 11 are provided on the second pipeline, and the hydrodynamic cavitation reactor 7 is connected to the oxygen active particle outlet 4.

[0037] The sewage treatment equipment provided in the present application can quickly kill harmful organisms in water and degrade organic pollutants, realizing efficient treatment of sewage using cavitation plasma advanced oxidation water treatment method.

[0038] The plasma source 1 drives the oxygen active particle generator 2 to produce oxygen active particles, and its gas raw material source is air. The oxygen active particle generator 2 is connected to the hydraulic cavitation reactor 7. When the sewage to be treated flows through the hydraulic cavitation reactor 7, the cross-sectional area of ​​the flow channel decreases suddenly, and the flow rate increases, which leads to a decrease in the liquid flow pressure, and then a negative pressure is generated at the throat of the hydraulic cavitation reactor 7. The oxygen active particles themselves are atmospheric pressure, and are sucked into the hydraulic cavitation reactor 7 under the action of negative pressure. At the same time, when the liquid flow pressure drops below the saturated vapor pressure corresponding to the liquid flow temperature, a large number of cavitation bubbles will be generated in the sewage. The oxygen active particles and the cavitation bubbles are fully mixed under the action of turbulence and flow downstream together. At the same time, after the liquid flow pressure downstream of the hydraulic cavitation reactor 7 is restored, the cavitation bubbles will collapse rapidly. The process of cavitation collapse will form local high temperature and high pressure, as well as high-speed microjets and violent vortices. High temperature and high pressure conditions will promote the reaction of oxygen active particles with water to produce active particles such as hydroxyl free radicals. The high-speed micro jet and violent vortex will make active particles such as hydroxyl radicals fully contact with bacteria, viruses and organic pollutants, thereby realizing the sewage treatment process. The plasma generator 1 can adjust the discharge parameters to meet the sewage treatment needs under different working conditions.

[0039] The hydrodynamic cavitation reactor 7 uses a fluid device similar to a Venturi structure to induce hydrodynamic cavitation, and the device has an air intake port at the throat.

[0040] The plasma generating source 1 adopts a high-voltage / high-frequency charging circuit design, a high energy storage density capacitor and a pulse discharge circuit topology design, which can achieve rapid charging and discharging and further improve the power density.

[0041] The pipeline includes a gas pipeline and a liquid pipeline. The gas pipeline connects the oxygen active particle generator 2 and the hydrodynamic cavitation reactor 7, and is used for the oxygen active particles to flow from the oxygen active particle generator 2 into the hydrodynamic cavitation reactor 7. The liquid pipeline includes a booster pump 6, a water pipe, a sensor 11 and valves (specifically including needle valves, ball valves, quick-connect chucks, reducers, pagoda heads and other common fluid equipment components), etc., and is used for the flow of liquid, as well as the monitoring of pressure, temperature and flow rate.

[0042] Air enters the oxygen active particle generator body 2 from the air inlet 3. The oxygen active particle generator 2 generates oxygen active particles using air as a raw material under the drive of the plasma generator 1. Under the negative pressure of the hydrodynamic cavitation reactor 7, the oxygen active particles enter the hydrodynamic cavitation reactor 7 from the oxygen active particle outlet 4 through the connecting pipeline.

[0043] After the sewage treatment equipment described in the present application is started via the equipment start switch 14, the sewage is pumped by the booster pump 6 and flows into the sewage treatment equipment via the equipment water inlet 5. The hydraulic cavitation reactor 7 generates negative pressure under the action of liquid flow, and the oxygen active particles generated by the oxygen active particle generator 2 are sucked into the hydraulic cavitation reactor 7 to undergo a series of physical and chemical reactions with the sewage, thereby killing harmful microorganisms and degrading organic pollutants, and then flow into the flash reactor 8 for further reaction, thereby improving the sewage treatment efficiency. Finally, the treated sewage flows out of the equipment through the equipment outlet 9.

[0044] Furthermore, the sensor 11 is connected to a flow performance monitor 12, and the flow performance monitor 12 is used to monitor the water flow rate of the equipment, the inlet and outlet pressures of the hydrodynamic cavitation reactor, and the liquid flow temperature.

[0045] Furthermore, the sensor 11 includes a flow sensor, a temperature sensor and a pressure sensor.

[0046] Furthermore, the plasma generating source 1, the oxygen active particle generating component and the hydrodynamic cavitation reaction component are arranged in sequence from top to bottom.

[0047] Furthermore, it also includes a box body 13, the water inlet 5 and the water outlet 9 are arranged on the box body 13, the plasma generating source 1 is arranged on the highest layer of the box body 13, the oxygen active particle generating component is arranged on the rear side of the middle layer of the box body 13, and the hydrodynamic cavitation reaction component is arranged on the lowest layer of the box body 13.

[0048] A power distribution cabinet is installed inside the box 13 to supply power to related devices.

[0049] Furthermore, a start switch 14 is provided on the box body 13, and the start switch 14 controls the sewage treatment equipment to start working or stop working.

[0050] Furthermore, the plasma generating source 1 can generate high-frequency high-voltage pulse discharge, the high-frequency high-voltage pulse discharge frequency is not less than 0.1-10kHz, the high-frequency high-voltage pulse discharge voltage maximum value is not less than 20kV, and the high-frequency high-voltage pulse discharge pulse width is 500-15000ns.

[0051] Furthermore, the surface of the box body 13 is provided with heat dissipation holes, and a ventilation fan is provided inside the box body.

[0052] Furthermore, an electromagnetic isolation protective cover is arranged outside the plasma generating source 1 .

[0053] Cavitation plasma uses air discharge plasma to generate oxygen active particles, and uses the characteristics of hydraulic cavitation to make the oxygen active particles fully contact with the water body, thereby generating active substances such as hydroxyl radicals in the water. This application designs a sewage treatment equipment based on the characteristics of cavitation plasma. After sterilization experiments, with Escherichia coli as the target, the bacterial killing rate is ≥99.99% after 15 minutes of treatment.

[0054] Although the present application is described above with reference to specific embodiments, it should be understood by those skilled in the art that many modifications may be made to the configurations and details disclosed in the present application within the principles and scope disclosed in the present application. The scope of protection of the present application is determined by the appended claims, and the claims are intended to cover all modifications included in the equivalent literal meaning or scope of the technical features in the claims.

Claims

1. A sewage treatment equipment, characterized in that: The invention comprises a plasma generating source, an oxygen active particle generating component, a hydrodynamic cavitation reaction component and a power supply component connected in sequence, wherein the plasma generating source is connected to the power supply component, and the oxygen active particle generating component is connected to the power supply component; the oxygen active particle generating component comprises an oxygen active particle generator, and the oxygen active particle generator is provided with an air inlet and an oxygen active particle outlet; the hydrodynamic cavitation reaction component comprises a water inlet, a booster pump, a hydrodynamic cavitation reactor, a flash reactor and a water outlet connected in sequence, the water inlet is connected to the booster pump through a first pipeline, the booster pump, the hydrodynamic cavitation reactor, the flash reactor and the water outlet are connected through a second pipeline, a plurality of sensors are provided on the second pipeline, and the hydrodynamic cavitation reactor is connected to the oxygen active particle outlet.

2. The sewage treatment equipment according to claim 1, characterized in that: The sensor is connected to a flow performance monitor, and the flow performance monitor is used to monitor the water flow rate of the equipment, the inlet and outlet pressures of the hydrodynamic cavitation reactor, and the liquid flow temperature.

3. The sewage treatment equipment according to claim 2, characterized in that: The sensors include a flow sensor, a temperature sensor and a pressure sensor.

4. The sewage treatment equipment according to claim 3, characterized in that: The plasma generation source, the oxygen active particle generation component and the hydrodynamic cavitation reaction component are arranged in sequence from top to bottom.

5. The sewage treatment equipment according to any one of claims 1 to 4, characterized in that: It also includes a box body, the water inlet and the water outlet are arranged on the box body, the plasma generating source is arranged on the highest layer of the box body, the oxygen active particle generating component is arranged on the rear side of the middle layer of the box body, and the hydrodynamic cavitation reaction component is arranged on the lowest layer of the box body.

6. The sewage treatment equipment according to claim 5, characterized in that: The box body is provided with a start switch, and the start switch controls the sewage treatment equipment to start working or stop working.

7. The sewage treatment equipment according to claim 6, characterized in that: The plasma generating source can generate high-frequency high-voltage pulse discharge, the high-frequency high-voltage pulse discharge frequency is not less than 0.1-10kHz, the high-frequency high-voltage pulse discharge voltage maximum value is not less than 20kV, and the high-frequency high-voltage pulse discharge pulse width is 500-15000ns.

8. The sewage treatment equipment according to claim 5, characterized in that: The surface of the box body is provided with heat dissipation holes, and a ventilation fan is provided inside the box body.

9. The sewage treatment equipment according to claim 8, characterized in that: An electromagnetic isolation protective cover is arranged outside the plasma generating source.

10. The sewage treatment equipment according to claim 8, characterized in that: The hydraulic cavitation reactor uses a fluid device with a Venturi structure to induce hydraulic cavitation, and the throat of the fluid device is provided with an air intake.

Images