CN111807501A - Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof - Google Patents
Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof Download PDFInfo
- Publication number
- CN111807501A CN111807501A CN202010698183.4A CN202010698183A CN111807501A CN 111807501 A CN111807501 A CN 111807501A CN 202010698183 A CN202010698183 A CN 202010698183A CN 111807501 A CN111807501 A CN 111807501A
- Authority
- CN
- China
- Prior art keywords
- valve
- ozone
- water
- circulating
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to a sewage treatment device and a sewage treatment method by continuous high-concentration ozone oxidation, which consists of an ozone adding and recycling system, a hydraulic circulating system and a closed reaction tank; the ozone adding and recycling system comprises an ozone generator, a gas storage box, an air inlet valve, a gas flowmeter and a gas return pipeline; the hydraulic circulating system comprises a circulating pipeline, a water inlet valve, a circulating water pump, a liquid flowmeter, a reflux control valve, a pressure gauge, a Venturi tube, a water outlet valve and an aeration head; the top of the closed reaction tank is provided with a safety valve, a water adding valve and a pressure gauge; the ozone generator, the gas storage tank, the air inlet valve and the gas flowmeter are sequentially connected through a pipeline, the gas storage tank and the safety valve are connected through a gas return pipeline, and the gas flowmeter is connected with the Venturi tube through a pipeline. The invention depends on the power of the circulating water pump, is energy-saving and environment-friendly, is simple to operate, and can be widely applied to the oxidation treatment of the production sewage in small and medium-sized factories.
Description
Technical Field
The invention relates to a device for treating sewage by continuous high-concentration ozone oxidation and a sewage treatment method thereof, which are used for improving the biodegradability of industrial wastewater difficult to degrade, are also suitable for centralized oxidation treatment of urban industrial sewage, and belong to the technical field of organic wastewater oxidation treatment.
Background
Ozone is often used in industrial sewage treatment because of its characteristics of good oxidation effect, no secondary pollution, high treatment efficiency and the like, and can decompose macromolecules in organic wastewater into micromolecular substances and improve the biodegradability of wastewater. The capability of ozone to oxidize organic wastewater is related to factors such as ozone concentration, temperature, PH value, contact area and reaction time in water, and the ozone concentration in water and the contact area of the ozone and the water are the most main factors influencing the oxidizing capability of the water when the temperature and the PH value of the water are fixed.
The traditional ozone adding mode mainly comprises two modes, wherein one mode is that the ozone is directly aerated into water under normal pressure, and the other mode is that the impeller of a gas-liquid mixing pump rotates at high speed to suck liquid and gas simultaneously. The direct aeration has the advantages that the ozone is slightly influenced by the characteristics of the gas, and the decomposition resistance is relatively strong. But the ozone bubbles have large diameter, high rising speed, short retention time, small contact area with water and poor oxidation effect; the gas-liquid mixing pump method is characterized in that ozone is dissolved into water by utilizing the characteristic that a pump sucks partial gas into liquid while absorbing water, and micro-nano bubbles can be generated by adopting the gas-liquid mixing pump method, so that the gas can exist in the water for a long time, the mass transfer efficiency is improved, meanwhile, the micro-nano bubbles can promote the generation of hydroxyl radicals, the treatment effect is further enhanced, and the defects are that the amount of ozone sucked by a mixing pump is small, and the concentration of ozone in the water is still low. In addition, the gas-liquid mixing pump method has a process of releasing at normal pressure, which can not continuously maintain the state of high-concentration ozone, and the oxidation effect is influenced.
The ozone has active chemical property, can be automatically decomposed at normal temperature and normal pressure to generate oxygen, has a half-life period of about 15-30min, and can be decomposed more quickly at high temperature. The air compressor or the air pump is used for pressurizing, the temperature of the compressed ozone rises quickly, the ozone stays in the air storage tank for a long time, so that the decomposition is severe, the concentration of the ozone in the air source is reduced, and the significance of pressurizing and aerating is lost.
According to henry's law, when the temperature is constant, the solubility of gas in water is proportional to the equilibrium partial pressure, i.e., the greater the pressure of the gaseous phase, the greater the solubility of gas, and it is apparent that aeration of ozone under pressure increases its solubility in water, thereby increasing the concentration of ozone in water. When the gas dissolving pressure reaches about 0.3Mpa, gas (including ozone) exists in water in a micro-nano bubble mode, and the contact area with the water is greatly increased. In addition, ozone has higher solubility (13 times of oxygen) than other gases in the gas source, and other gases are easier to escape during pressurized aeration, so that the proportion of ozone in the gas dissolved in water is increased. The cavitation effect of the micro-nano bubbles during release can promote the generation of hydroxyl radicals, and the oxidation capacity of the micro-nano bubbles is further improved. Therefore, the ozone pressurization aeration has the effects of improving the concentration of ozone in water, increasing the contact area of ozone, secondarily strengthening oxidation of micro-nano bubbles and the like.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a device for treating sewage by continuous high-concentration ozone oxidation and a sewage treatment method thereof.
The invention aims to realize the device for treating sewage by continuously oxidizing high-concentration ozone, and is characterized by comprising an ozone adding and recycling system, a hydraulic circulating system and a closed reaction tank;
the ozone adding and recycling system comprises an ozone generator, a gas storage box, an air inlet valve, a gas flowmeter and a gas return pipeline;
the hydraulic circulating system comprises a circulating pipeline, a water inlet valve, a circulating water pump, a liquid flowmeter, a reflux control valve, a pressure gauge, a Venturi tube, a water outlet valve and an aeration head;
the top of the closed reaction tank is provided with a safety valve, a water adding valve and a pressure gauge, and the bottom of the closed reaction tank is provided with a water discharging valve;
the ozone generator, the gas storage tank, the gas inlet valve and the gas flowmeter are sequentially communicated through a pipeline, the gas storage tank and the safety valve are connected through a gas return pipeline, and the gas flowmeter is connected with the Venturi tube through a pipeline;
a water inlet of a circulating pipeline in the hydraulic circulating system is connected to the side wall of the closed reaction tank, the water inlet of the circulating pipeline is communicated with the closed reaction tank, a water outlet of the circulating pipeline extends into the closed reaction tank, and an aeration head communicated with the circulating pipeline is arranged at a water outlet of the circulating pipeline extending into the closed reaction tank; the water inlet valve, the circulating water pump, the liquid flowmeter, the backflow control valve, the pressure gauge, the venturi tube and the water outlet valve are sequentially arranged on the circulating pipeline and are arranged along the water inlet of the circulating pipeline towards the direction of the aeration head;
the water outlet of the return control valve pipeline is communicated with the circulating pipeline on one side of the circulating water pump, the water inlet of the return control valve pipeline is communicated with the circulating pipeline on the other side of the circulating water pump, and the water inlet of the return control valve pipeline is connected to the circulating pipeline between the circulating water pump and the liquid flowmeter; the backflow control valve is arranged on a backflow control valve pipeline.
The upper part and the lower part of the closed reaction tank are sealed by flanges.
And a water inlet of the circulating pipeline is connected to the middle part of the side wall of the closed reaction tank.
The safety valve is a constant pressure slow release valve.
Turning on an ozone generator, enabling ozone generated by the ozone generator to enter a gas storage tank, and storing the ozone in the gas storage tank; simultaneously closing the water inlet valve, the water outlet valve and the water discharge valve, opening the water adding valve, adding the sewage to be treated into the closed reaction tank, keeping the liquid level of the sewage to be treated submerging the water inlet of the circulating pipeline, and closing the water adding valve;
opening a water inlet valve and a water outlet valve, starting a circulating water pump, sucking wastewater to be treated in the closed reaction tank through a water inlet of a circulating pipeline, discharging the wastewater to an aeration head through the circulating water pump, a liquid flow meter, a pressure gauge, a Venturi tube and the water outlet valve, and refluxing the wastewater to the closed reaction tank through the aeration head;
controlling the reflux amount by adjusting a reflux control valve, measuring the reflux amount by a liquid flowmeter, displaying the pressure on a circulating pipeline by a pressure gauge, enabling a Venturi tube to work through hydraulic circulation, and sucking ozone generated by an ozone generator in an air storage tank by the Venturi tube;
the Venturi tube sucks ozone from the gas storage tank, the ozone and wastewater to be treated form a water-vapor mixture in the Venturi tube, the water-vapor mixture is discharged to the aeration head through the water outlet valve, bubbles rise above the water surface in the closed reaction tank through aeration of the aeration head, the gas volume at the upper part of the closed reaction tank is increased along with continuous work of the circulating water pump, the pressure is increased, when the set pressure is reached, the safety valve starts to exhaust, and the discharged ozone tail gas enters the gas storage tank through the gas backflow pipeline for recycling; and then, the pressure in the closed reaction tank is stable, continuous pressure stabilization ozone aeration is realized, and the ozone oxidation capacity is enhanced.
The water after the sewage treatment in the closed reaction tank can be discharged by opening the drainage valve.
The device for treating sewage through continuous high-concentration ozone oxidation and the sewage treatment method thereof are reasonable in structure and advanced and scientific in method, and structurally comprise an ozone adding and recycling system, a hydraulic circulating system and a closed reaction tank, wherein the ozone adding and recycling system comprises an ozone generator, a gas storage tank, a gas flowmeter and a recycling pipeline; the hydraulic circulating system comprises a circulating water pump, a reflux regulator, a liquid flowmeter, a pressure gauge, a venturi tube and a valve; the bottom of the closed reaction tank is provided with an aeration head and a drainage valve, and the upper part of the closed reaction tank is provided with a pressure gauge, a water inlet valve and a safety valve; the upper part and the lower part of the closed reaction tank are sealed by flanges. The water inlet of the hydraulic circulating system is arranged in the middle of the closed reaction tank, and the water outlet is arranged at the bottom of the closed reaction tank. The closed reaction tank is provided with an aeration head for enhancing gas-water mixing. The safety valve arranged on the top of the closed reaction tank is a constant-pressure slow-release valve.
The working principle is as follows: firstly, adding wastewater to be treated into a closed reaction tank, and keeping the liquid level to submerge a water inlet pipe orifice. Close the inlet valve, start ozone generation system, the ozone of production gets into the gas holder, then starts circulating water pump, and the venturi meter inhales ozone from the gas holder, forms the steam mixture, through aeration head aeration, the bubble rises to the surface of water more than, along with the continuous operation of circulating pump, the gas volume on closed retort upper portion increases, pressure increase, when reaching the set pressure level constant pressure slow release valve begins the exhaust, and exhaust ozone tail gas gets into the gas holder, cyclic utilization. And the pressure in the closed reaction tank is stable, so that continuous pressure stabilization ozone aeration is realized, and the ozone oxidation capacity is enhanced.
The invention has the following innovation points and characteristics:
1. ozone is not compressed and is added into the wastewater in real time, the attenuation of the ozone concentration of the air source is reduced, continuous pressure stabilization circulating aeration is realized, the ozone concentration in the water can be greatly improved, and the contact area of the ozone and the wastewater is increased.
2. The circulating water pump pumps water and discharges water in the closed reaction tank, the pressure water heads at the inlet and the outlet are equal, the circulating process only needs to overcome the local water head loss, the lift is low, the energy consumption is low, and the processing capacity is improved.
3. Ozone tail gas enters the gas storage box for cyclic utilization, and the ozone utilization efficiency is improved.
According to henry's law, when the temperature is constant, the solubility of gas in water is proportional to the equilibrium partial pressure, i.e., the greater the pressure of the gaseous phase, the greater the solubility of gas, and it is apparent that aeration of ozone under pressure increases its solubility in water, thereby increasing the concentration of ozone in water. When the gas dissolving pressure reaches about 0.3Mpa, gas (including ozone) exists in water in a micro-nano bubble mode, and the contact area with the water is greatly increased. In addition, ozone has higher solubility (13 times of oxygen) than other gases in the gas source, and other gases are easier to escape during pressurized aeration, so that the proportion of ozone in the gas dissolved in water is increased. The cavitation effect of the micro-nano bubbles during release can promote the generation of hydroxyl radicals, and the oxidation capacity of the micro-nano bubbles is further improved. Therefore, the ozone pressurization aeration has the effects of improving the concentration of ozone in water, increasing the contact area of ozone, secondarily strengthening oxidation of micro-nano bubbles and the like. Adopt circulating water pump to let venturi inhale ozone, gaseous not throwing into in the waste water in real time through the compression, the decay of air supply ozone concentration reduces, realizes lasting steady voltage circulation aeration, can increase substantially the ozone concentration in the aquatic, increase ozone and waste water area of contact. And the exhaust gas is recycled by using a gas recycling pipeline, so that the pollution is reduced.
The device for continuously maintaining the high-concentration ozone oxidation treatment of the sewage relies on the circulating water pump, is energy-saving and environment-friendly, is simple to operate, can be widely applied to oxidation treatment of production sewage in small and medium-sized factories, improves the biodegradability of the sewage, provides good working conditions for advanced treatment of the sewage, and has greater practicability and social and economic benefits.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1 water inlet valve, 2 circulating water pump, 3 liquid flowmeter, 4 reflux control valve, 5 pressure gauge, 6 Venturi tube, 7 water outlet valve, 8 aeration head, 9 closed reaction tank, 10 safety valve, 11 water adding valve, 12 pressure gauge, 13 ozone generator, 14 gas storage tank, 15 air inlet valve, 16 gas flowmeter, 17 water drain valve, 18 gas reflux pipeline.
Detailed Description
The invention is further described with reference to the accompanying drawings and the description thereof.
A sewage treatment device for continuous high-concentration ozone oxidation comprises an ozone feeding and recycling system, a hydraulic circulating system and a closed reaction tank 9; the ozone adding and recycling system comprises an ozone generator 13, a gas storage tank 14, an air inlet valve 15, a gas flowmeter 16 and a gas return pipeline 18; the hydraulic circulating system comprises a circulating pipeline, a water inlet valve 1, a circulating water pump 2, a liquid flowmeter 3, a reflux control valve 4, a pressure gauge 5, a venturi tube 6, a water outlet valve 7 and an aeration head 8; the top of the closed reaction tank 9 is provided with a safety valve 10, a water adding valve 11 and a pressure gauge 12, and the bottom of the closed reaction tank 9 is provided with a drainage valve 17.
The ozone generator 13, the gas storage tank 14, the air inlet valve 15 and the gas flowmeter 16 are sequentially communicated through a pipeline, the gas storage tank 14 is connected with the safety valve 10 through a gas return pipeline 18, and the gas flowmeter 16 is connected with the Venturi tube 6 through a pipeline; a water inlet of a circulating pipeline in the hydraulic circulating system is connected to the side wall of the closed reaction tank 9, the water inlet of the circulating pipeline is communicated with the closed reaction tank 9, a water outlet of the circulating pipeline extends into the closed reaction tank 9, and an aeration head 8 communicated with the circulating pipeline is arranged at a water outlet of the circulating pipeline extending into the closed reaction tank 9; the water inlet valve 1, the circulating water pump 2, the liquid flowmeter 3, the reflux control valve 4, the pressure gauge 5, the venturi tube 6 and the water outlet valve 7 are sequentially arranged on the circulating pipeline and are arranged along the water inlet of the circulating pipeline to the direction of the aeration head 8; a water outlet of the backflow control valve pipeline is communicated with the circulating pipeline on one side of the circulating water pump 2, a water inlet of the backflow control valve pipeline is communicated with the circulating pipeline on the other side of the circulating water pump 2, and a water inlet of the backflow control valve pipeline is connected to the circulating pipeline between the circulating water pump 2 and the liquid flowmeter 3; the backflow control valve 4 is arranged on a backflow control valve pipeline.
Further, the sealed reaction tank 9 is sealed up and down by flanges. The water inlet of the circulating pipeline is connected to the middle part of the side wall of the closed reaction tank 9. The safety valve 10 is a constant pressure slow release valve.
When the ozone generator is used, the ozone generator 13 is turned on, ozone generated by the ozone generator 13 enters the gas storage tank 14, and the ozone is stored in the gas storage tank 14; and simultaneously closing the water inlet valve 1, the water outlet valve 7 and the water discharge valve 17, opening the water adding valve 11, adding the sewage to be treated into the closed reaction tank 9, keeping the liquid level of the sewage to be treated submerging the water inlet of the circulating pipeline, and closing the water adding valve 11.
Opening a water inlet valve 1 and a water outlet valve 7, starting a circulating water pump 2, sucking wastewater to be treated in a closed reaction tank 9 through a water inlet of a circulating pipeline, discharging the wastewater to an aeration head 8 through the circulating water pump 2, a liquid flowmeter 3, a pressure gauge 5, a venturi tube 6 and the water outlet valve 7, and refluxing the wastewater to the closed reaction tank 9 through the aeration head 8; controlling the reflux amount by adjusting a reflux control valve 4, measuring the reflux amount by a liquid flowmeter 3, displaying the pressure on a circulating pipeline by a pressure gauge 5, enabling a Venturi tube 6 to work through hydraulic circulation, and sucking ozone generated by an ozone generator 13 in an air storage tank 14 by the Venturi tube 6; the Venturi tube 6 sucks ozone from the gas storage tank 14, the ozone and wastewater to be treated form a water-vapor mixture in the Venturi tube 6, the water-vapor mixture is discharged to the aeration head 8 through the water outlet valve 7 and is aerated through the aeration head 8, bubbles rise above the water level in the closed reaction tank 9, along with the continuous work of the circulating water pump 2, the gas volume at the upper part of the closed reaction tank 9 is increased, the pressure is increased, when the set pressure is reached, the safety valve 10 starts to exhaust gas, and the discharged ozone tail gas enters the gas storage tank 14 through the gas backflow pipeline 18 for recycling; thereafter, the pressure in the closed reaction tank 9 is stabilized, continuous pressure stabilization ozone aeration is realized, and the ozone oxidation capacity is enhanced. The treated water in the closed reaction tank 9 can be discharged by opening the drain valve 17.
As shown in figure 1, the device for treating sewage by continuously maintaining high-concentration ozone oxidation comprises an ozone adding and recycling system, a gas storage tank 14, an air inlet valve 15, a gas flowmeter 16 and the like, wherein a gas return pipeline 18 is arranged between the gas storage tank 14 and a safety valve 10; the hydraulic circulating system comprises a water inlet valve 1, a circulating water pump 2, a liquid flowmeter 3, a reflux control valve 4, a pressure gauge 5, a venturi tube 6, a water outlet valve 7 and an aeration head 8; the closed reaction tank 9 is provided with a safety valve 10, a water adding valve 11 and a pressure gauge 12; the bottom end of the reaction column 9 is provided with a drain valve 17.
The working principle of the device for treating sewage by continuously maintaining high-concentration ozone oxidation is as follows: opening an ozone generator 13, storing ozone in a gas storage tank 14, closing a water inlet valve 1, a water outlet valve 7 and a water drainage valve 17, opening a water adding valve 11, adding sewage to be treated into a closed reaction tank 9, adding a proper amount of sewage, and closing the water adding valve 11. Opening a water inlet valve 1 and a water outlet valve 7 of a hydraulic circulation pipeline, starting a circulating water pump 2, controlling the backflow amount by adjusting a backflow control valve 4, measuring the backflow amount through a liquid flowmeter 3, displaying the pressure on the pipeline by a pressure gauge 5, enabling a Venturi tube 6 to work through hydraulic circulation, absorbing ozone generated by an ozone generator 13 in a gas storage tank 14, adjusting the flow rate by an air inlet valve 15, measuring the value by a gas flowmeter 16, and discharging redundant gas through a safety valve 10 after a certain pressure value is reached; the discharged ozone is re-introduced into the gas storage tank 14 through the gas return line 18; the aeration head 8 can enhance the water-air contact area in the water-air mixing process; the circulating water pump 2 is kept to work continuously, and after a period of time for dissolving air, the drainage valve 18 can be opened for drainage.
In the invention, high-concentration ozone is continuously added into the closed reaction tank, the safety valve discharges floating redundant gas, the closed reaction tank maintains a certain pressure, and sewage is fully contacted with the ozone for a period of time to degrade substances in the sewage. Ozone is not compressed and is added into the wastewater in real time, the attenuation of the ozone concentration of the air source is reduced, continuous pressure stabilization circulating aeration is realized, the ozone concentration in the water can be greatly improved, and the contact area of the ozone and the wastewater is increased. Ozone achieves the effect of dissolving gas in a closed reaction tank, and micro-nano bubbles can be generated after the ozone is released. The sewage is circulated by the circulating water pump 2, the ozone is sucked by the Venturi tube 4, and the ozone is released by the aeration head. The upper part of the closed reaction tank is provided with a safety valve 10 which can be automatically adjusted according to the set pressure, when the pressure is higher than the set value, the safety valve can discharge redundant floating gas, and the gas is recycled into the gas storage tank for recycling through a gas return pipeline.
Claims (6)
1. A sewage treatment device for continuous high-concentration ozone oxidation is characterized by comprising an ozone feeding and recycling system, a hydraulic circulating system and a closed reaction tank (9);
the ozone adding and recycling system comprises an ozone generator (13), a gas storage box (14), an air inlet valve (15), a gas flowmeter (16) and a gas return pipeline (18);
the hydraulic circulating system comprises a circulating pipeline, a water inlet valve (1), a circulating water pump (2), a liquid flowmeter (3), a reflux control valve (4), a pressure gauge (5), a Venturi tube (6), a water outlet valve (7) and an aeration head (8);
the top of the closed reaction tank (9) is provided with a safety valve (10), a water adding valve (11) and a pressure gauge (12), and the bottom of the closed reaction tank (9) is provided with a drainage valve (17);
the ozone generator (13), the gas storage tank (14), the air inlet valve (15) and the gas flowmeter (16) are sequentially communicated and connected through a pipeline, the gas storage tank (14) is connected with the safety valve (10) through a gas return pipeline (18), and the gas flowmeter (16) is connected with the Venturi tube (6) through a pipeline;
a water inlet of a circulating pipeline in the hydraulic circulating system is connected to the side wall of the closed reaction tank (9), the water inlet of the circulating pipeline is communicated with the closed reaction tank (9), a water outlet of the circulating pipeline extends into the closed reaction tank (9), and an aeration head (8) communicated with the circulating pipeline is arranged at the water outlet of the circulating pipeline extending into the closed reaction tank (9); the water inlet valve (1), the circulating water pump (2), the liquid flowmeter (3), the backflow control valve (4), the pressure gauge (5), the venturi tube (6) and the water outlet valve (7) are sequentially arranged on the circulating pipeline and are arranged along the water inlet of the circulating pipeline to the direction of the aeration head (8);
a water outlet of the backflow control valve pipeline is communicated with a circulating pipeline on one side of the circulating water pump (2), a water inlet of the backflow control valve pipeline is communicated with a circulating pipeline on the other side of the circulating water pump (2), and a water inlet of the backflow control valve pipeline is connected to the circulating pipeline between the circulating water pump (2) and the liquid flowmeter (3); the backflow control valve (4) is arranged on a backflow control valve pipeline.
2. The apparatus for treating sewage by continuous high-concentration ozone oxidation according to claim 1, wherein the closed reaction tank (9) is sealed at upper and lower sides by flanges.
3. The apparatus for treating sewage by continuous high-concentration ozone oxidation as claimed in claim 1, wherein the water inlet of the circulation line is connected to the middle of the side wall of the closed reaction tank (9).
4. The apparatus for treating sewage by continuous high-concentration ozone oxidation according to claim 1, wherein said safety valve (10) is a constant pressure slow release valve.
5. The method for treating wastewater by using the apparatus for treating wastewater by continuous high-concentration ozone oxidation according to any one of claims 1 to 4, wherein the ozone generator (13) is turned on, ozone generated by the ozone generator (13) is introduced into the gas storage tank (14), and the ozone is stored in the gas storage tank (14); simultaneously closing the water inlet valve (1), the water outlet valve (7) and the water discharge valve (17), opening the water adding valve (11), adding the sewage to be treated into the closed reaction tank (9), keeping the liquid level of the sewage to be treated submerging the water inlet of the circulating pipeline, and closing the water adding valve (11);
opening a water inlet valve (1) and a water outlet valve (7), starting a circulating water pump (2), sucking wastewater to be treated in a closed reaction tank (9) through a water inlet of a circulating pipeline, discharging the wastewater to an aeration head (8) through the circulating water pump (2), a liquid flow meter (3), a pressure gauge (5), a Venturi tube (6) and the water outlet valve (7), and refluxing the wastewater to the closed reaction tank (9) through the aeration head (8);
the reflux amount is controlled by adjusting a reflux control valve (4) and is measured by a liquid flowmeter (3), the pressure on a circulating pipeline is displayed by a pressure gauge (5), a Venturi tube (6) works through hydraulic circulation, and the Venturi tube (6) sucks ozone generated by an ozone generator (13) in an air storage tank (14);
the Venturi tube (6) sucks ozone from the gas storage tank (14), the ozone and wastewater to be treated form a water-gas mixture in the Venturi tube (6), the water-gas mixture is discharged to the aeration head (8) through the water outlet valve (7), and is aerated through the aeration head (8), bubbles rise above the water level in the closed reaction tank (9), along with the continuous work of the circulating water pump (2), the gas volume at the upper part of the closed reaction tank (9) is increased, the pressure is increased, when the set pressure is reached, the safety valve (10) starts to exhaust, and the discharged ozone tail gas enters the gas storage tank (14) through the gas backflow pipeline (18) for recycling; then, the pressure in the closed reaction tank (9) is stable, continuous stable-pressure ozone aeration is realized, and the ozone oxidation capacity is enhanced.
6. The method as claimed in claim 5, wherein the treated water in the closed reaction tank (9) is drained by opening a drain valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010698183.4A CN111807501A (en) | 2020-07-20 | 2020-07-20 | Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010698183.4A CN111807501A (en) | 2020-07-20 | 2020-07-20 | Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111807501A true CN111807501A (en) | 2020-10-23 |
Family
ID=72865764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010698183.4A Pending CN111807501A (en) | 2020-07-20 | 2020-07-20 | Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111807501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112607987A (en) * | 2020-12-29 | 2021-04-06 | 吉林农业大学 | System for ecological enzyme preparation is used for mud decrement |
| CN112642310A (en) * | 2020-12-08 | 2021-04-13 | 中国石油化工股份有限公司 | Microbubble generation device, microbubble generation control method and device |
| CN113461240A (en) * | 2021-07-24 | 2021-10-01 | 安徽天柱绿色能源科技有限公司 | Device and method for efficiently treating domestic sewage by using ozone |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130284647A1 (en) * | 2011-02-04 | 2013-10-31 | Waterco Limited | Water treatment system |
| CN103736409A (en) * | 2013-12-30 | 2014-04-23 | 清华大学 | Production method of ozone micro air bubbles |
| CN207498121U (en) * | 2017-11-01 | 2018-06-15 | 中国石油天然气集团公司 | Improve the water treatment system of ozone utilization ratio |
| CN209411868U (en) * | 2018-12-25 | 2019-09-20 | 山东祥桓环保工程有限公司 | A kind of twin-jet apparatus improving water process ozone utilization rate |
| CN110330093A (en) * | 2019-07-10 | 2019-10-15 | 扬州大学 | A kind of pressure air-dissolving strengthens ozone pre-oxidation capability device and its processing method |
| CN211004662U (en) * | 2019-06-03 | 2020-07-14 | 上海力脉环保设备有限公司 | Device for catalyzing organic matters in ozone oxidation wastewater by ultraviolet light |
-
2020
- 2020-07-20 CN CN202010698183.4A patent/CN111807501A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130284647A1 (en) * | 2011-02-04 | 2013-10-31 | Waterco Limited | Water treatment system |
| CN103736409A (en) * | 2013-12-30 | 2014-04-23 | 清华大学 | Production method of ozone micro air bubbles |
| CN207498121U (en) * | 2017-11-01 | 2018-06-15 | 中国石油天然气集团公司 | Improve the water treatment system of ozone utilization ratio |
| CN209411868U (en) * | 2018-12-25 | 2019-09-20 | 山东祥桓环保工程有限公司 | A kind of twin-jet apparatus improving water process ozone utilization rate |
| CN211004662U (en) * | 2019-06-03 | 2020-07-14 | 上海力脉环保设备有限公司 | Device for catalyzing organic matters in ozone oxidation wastewater by ultraviolet light |
| CN110330093A (en) * | 2019-07-10 | 2019-10-15 | 扬州大学 | A kind of pressure air-dissolving strengthens ozone pre-oxidation capability device and its processing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642310A (en) * | 2020-12-08 | 2021-04-13 | 中国石油化工股份有限公司 | Microbubble generation device, microbubble generation control method and device |
| CN112607987A (en) * | 2020-12-29 | 2021-04-06 | 吉林农业大学 | System for ecological enzyme preparation is used for mud decrement |
| CN113461240A (en) * | 2021-07-24 | 2021-10-01 | 安徽天柱绿色能源科技有限公司 | Device and method for efficiently treating domestic sewage by using ozone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111807501A (en) | Continuous high-concentration ozone oxidation sewage treatment device and sewage treatment method thereof | |
| US4351730A (en) | Treatment of biologically-degradable waste | |
| US7255332B2 (en) | System and method for dissolving gases in liquids | |
| US9010735B2 (en) | Contact reaction tower | |
| JP2973305B2 (en) | Pressurized oxygen dissolution method | |
| US6668556B2 (en) | Gas transfer energy recovery and effervescence prevention apparatus and method | |
| CN200974781Y (en) | Ultrasonic-ozone synergic waste-water treatment device | |
| CN110330093A (en) | A kind of pressure air-dissolving strengthens ozone pre-oxidation capability device and its processing method | |
| JP2003220398A5 (en) | ||
| CN105293673A (en) | Ultramicro bubble water purification device | |
| CN102963947A (en) | Pressurized dissolved micro-bubble generator | |
| KR101150381B1 (en) | Apparatus for stripping and recovering ammonia | |
| CN208561822U (en) | A kind of device using ozonation aerated purified in situ river water body | |
| CN110217903A (en) | A kind of micro-nano bubble generator of Self inhaling type | |
| CN216808264U (en) | By using CO2System for regulating and controlling pH of effluent of chemical crystallization granulation fluidized bed | |
| CN212334746U (en) | Anaerobic reactor for wastewater treatment | |
| CN209872534U (en) | Superoxide nanometer microbubble aeration device | |
| CN112062263A (en) | Siphon type low-pressure aeration high-pressure dissolved-air ozone wastewater treatment device and using method thereof | |
| CN204848414U (en) | PSP efflux aeration systems | |
| CN206298409U (en) | A kind of ozone underwater jet aeration device | |
| CN115010241B (en) | Ozone dissolved gas oxidation device and method with high gas-water ratio | |
| CN114506915A (en) | Superoxide nanobubble water quality lifting system | |
| PL92389B1 (en) | ||
| CN107381701B (en) | Ozone air flotation device and method for supplying air by using constant-pressure microbubble generator | |
| CN218478601U (en) | High-dissolved gas water generating device without gas overflow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201023 |