CN111704232B - Ozone disinfection method and equipment for water - Google Patents
Ozone disinfection method and equipment for water Download PDFInfo
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- CN111704232B CN111704232B CN202010481937.0A CN202010481937A CN111704232B CN 111704232 B CN111704232 B CN 111704232B CN 202010481937 A CN202010481937 A CN 202010481937A CN 111704232 B CN111704232 B CN 111704232B
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- ozone
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- reation kettle
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
- B01D53/8675—Ozone
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- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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 the technical field of water treatment, in particular to a method and equipment for disinfecting water by ozone, which comprises the following process steps: firstly, preparing 30% high-concentration ozone gas; secondly, introducing the high-concentration ozone gas prepared in the first step into a multistage aeration disinfection reaction kettle; thirdly, injecting water to be disinfected into a waterway of the multistage aeration disinfection reaction kettle; step four, high-concentration ozone gas is led into the multistage aeration disinfection reaction kettle step by step to disinfect water, the diameters of bubbles are reduced step by step, ozone is dissolved step by step, and the ozone concentration is reduced; fifthly, the ozone after the last stage of aeration passes through a catalyst to convert the residual ozone into oxygen, and the ozone concentration is reduced to the national standard allowable value. The method and the equipment provided by the invention have the advantages of low running cost, convenient preparation, good disinfection effect, high treatment efficiency and no ozone residue in water.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a method and equipment for disinfecting water by ozone.
The water disinfection, sterilization and deodorization technology widely exists in industrial production and people's life, but the water treatment technology has the problems of disinfectant residue, lower operation efficiency or higher operation cost, and the like, and the water treatment technology currently adopts the following technologies: 1. chlorine disinfection; 2. chlorine dioxide disinfection; 3. ozone sterilization; 4. ultraviolet sterilization; 5. and (5) sterilizing with sodium hypochlorite. Chlorine is dissolved in water, the dissolution concentration is required to be controlled, the disinfection effect is difficult to achieve when the concentration is low, chloride ion residues are generated, the subsequent harmless treatment of substances such as heavy metal ions in sewage is increased, and the substances remain in the drinking water for a long time; chlorine dioxide also has difficulty in solving the disinfectant residue problem; the ozone disinfection at the present stage is common concentration ozone disinfection, the operation efficiency is relatively low, and the equipment input amount is large; the ultraviolet disinfection equipment is relatively complex, and the wavelength and irradiation intensity of ultraviolet rays need to be strictly controlled; hypochlorite is very stable and can remain in nature for a long time after use.
Disclosure of Invention
The invention aims to solve the technical problems of providing a water ozone disinfection method and equipment with low running cost, convenient preparation, good disinfection effect, high treatment efficiency and no ozone residue in water.
The invention is realized by the following technical scheme:
a method for ozone disinfection of water comprising the following process steps:
firstly, preparing 30% high-concentration ozone gas;
step two, introducing the high-concentration ozone gas prepared in the step one into a multistage ozone aeration reaction kettle;
thirdly, injecting water to be disinfected into a waterway of the multistage ozone aeration reaction kettle;
step four, high-concentration ozone gas is led into the multistage ozone aeration reaction kettle step by step to disinfect water, the diameters of bubbles are reduced step by step, ozone is dissolved step by step, and the ozone concentration is reduced;
fifthly, the ozone after the last stage of aeration passes through a catalyst to convert the residual ozone into oxygen, and the ozone concentration is reduced to the national standard allowable value.
Further, water to be disinfected is injected into the waterway of the multistage ozone aeration reaction kettle at equal pressure.
Further, the multistage aeration reaction kettles are arranged at equal intervals in the horizontal direction, and each two adjacent stages are raised step by step and have the same height difference.
The utility model provides an ozone disinfection equipment of water, it includes one-level sedimentation tank, ozone generation heap, multistage ozone aeration reation kettle, second grade sedimentation tank and catalyst, a plurality of delivery ports have been seted up on the one-level sedimentation tank, a plurality of water inlets have been seted up on the second grade sedimentation tank, horizontal direction equidistance between the multistage ozone aeration reation kettle is arranged and every adjacent two-stage step by step rise and have the same difference in height, reation kettle water inlet is seted up to each stage ozone aeration reation kettle one end, the reation kettle delivery port is seted up to the other end, a plurality of ozone inlets have been seted up along extending direction bottom to each stage ozone aeration reation kettle, a plurality of ozone outlets have been seted up at the top, reation kettle water inlet and reation kettle delivery port all are close to the reation kettle lower part, each stage reation kettle water inlet and the delivery port of corresponding one-level sedimentation tank pass through the pipeline intercommunication, each stage reation kettle delivery port and the water inlet of corresponding second grade sedimentation tank pass through the pipeline intercommunication, the ozone outlet of first stage ozone aeration reation kettle passes through the ozone pipeline and ozone outlet intercommunication with the ozone generator's of ozone, the ozone outlet of last one-level ozone aeration reation kettle respectively with the ozone inlet of next stage ozone aeration reation kettle passes through the ozone pipeline intercommunication, the ozone inlet of each stage, the ozone outlet of the last stage ozone shower nozzle is installed with the diameter of the last stage ozone shower nozzle, the last stage ozone shower nozzle is less than the diameter.
Further, a plurality of water outlets on the primary sedimentation tank are gradually raised and have the same height difference with the corresponding water inlets of the reaction kettles.
Further, the inlet and the outlet of each stage of ozone pipeline are provided with a reverse water bend.
Advantageous effects of the invention
The invention provides a water ozone disinfection method and equipment, which has the following characteristics and advantages:
the characteristics are as follows:
1. ozone gas is easier to prepare than chlorine, the preparation cost is lower, and the water dissolving and sterilizing capacity is far higher than that of chlorine;
2. multistage parallel water treatment improves the treatment rate;
3. and catalyzing waste gas to meet the national standard requirement.
The advantages are that:
1. the running cost (the cost of water treatment per unit volume) of the water treatment equipment adopting the disinfection technology is obviously reduced;
2. the water disinfection technology uses ozone as a disinfectant, has no residue in water, and is more environment-friendly;
3. the high-concentration ozone greatly improves the disinfection efficiency;
4. the multi-stage aeration fully improves the utilization rate of ozone, so that the whole equipment is more compact;
5. the water treatment equipment adopting the technology has stable and reliable operation and is easy to maintain.
Drawings
FIG. 1 is a schematic diagram of the ozone disinfection principle of the water of the present invention;
FIG. 2 is a schematic diagram of the apparatus of the present invention;
in the figure, a first-stage sedimentation tank, an ozone generating pile, an ozone pipeline, an ozone aeration reaction kettle, a second-stage sedimentation tank and a reverse water bend are shown in the figure, wherein the first-stage sedimentation tank, the ozone generating pile, the ozone pipeline, the ozone aeration reaction kettle and the second-stage sedimentation tank are shown in the figure, and the reverse water bend is shown in the figure.
Detailed Description
A method for ozone disinfection of water comprising the following process steps:
firstly, preparing 30% high-concentration ozone gas; the high-concentration ozone oxygen gas is prepared by an ozone generator by adopting an electrolytic high-concentration ozone preparation technology, so that the preparation is easy and the preparation cost is low.
Step two, introducing the high-concentration ozone gas prepared in the step one into a multistage ozone aeration reaction kettle; the water to be treated in the sedimentation tank is gradually reduced from low concentration to high concentration, and the multistage ozone aeration reaction kettle is adopted, so that the ozone concentration of the bottom layer is large, the mode of gradual decrease is adopted, the ozone utilization rate is improved, and the treatment efficiency is improved.
Thirdly, injecting water to be disinfected into a waterway of the multistage ozone aeration reaction kettle;
step four, high-concentration ozone gas is led into the multistage ozone aeration reaction kettle step by step to disinfect water, the diameters of bubbles are reduced step by step, ozone is dissolved step by step, and the ozone concentration is reduced; the ozone utilization rate is improved, the treatment efficiency is improved, no residue exists in water, and the method is more environment-friendly.
Fifthly, the ozone after the last stage of aeration passes through a catalyst to convert the residual ozone into oxygen, and the ozone concentration is reduced to the national standard allowable value. After step-by-step aeration and disinfection, the concentration of the last stage ozone is reduced to the minimum, and the concentration of the ozone is very low through catalytic decomposition, so that the national standard specification is met.
Further, water to be disinfected is injected into the waterway of the multistage ozone aeration reaction kettle at equal pressure. Ensuring the processing effect of each stage.
Further, the multistage aeration reaction kettles are arranged at equal intervals in the horizontal direction, and each two adjacent stages are raised step by step and have the same height difference.
The pressure in the reaction kettle is in a linear relation with the arrangement height, namely DeltaP=ρg Deltah.
The water outlet of the sedimentation tank is the same as the corresponding water inlet of the reaction kettle in height difference, so that water to be disinfected is injected into the waterway of the multi-stage ozone aeration reaction kettle under equal pressure.
The utility model provides an ozone disinfection equipment of water, it includes one-level sedimentation tank 1, ozone generation heap 2, multistage ozone aeration reation kettle 4, second grade sedimentation tank 5 and catalyst (not shown), a plurality of delivery ports have been seted up on the one-level sedimentation tank, a plurality of water inlets have been seted up on the second grade sedimentation tank, horizontal direction equidistance arrangement between the multistage ozone aeration reation kettle and every adjacent two-stage rise step by step and have the same difference in height between, the reation kettle water inlet is seted up to each stage ozone aeration reation kettle one end, the reation kettle delivery port is seted up to the other end, a plurality of ozone inlets have been seted up along the extending direction bottom to each stage ozone aeration reation kettle, a plurality of ozone outlets have been seted up at the top, reation kettle water inlet and reation kettle delivery port are all close to the reation kettle lower part, each stage reation kettle water inlet and the delivery port of corresponding one-level sedimentation tank pass through the pipeline intercommunication, each stage reation kettle delivery port and the water inlet of corresponding second grade sedimentation tank pass through the pipeline intercommunication, the ozone inlet of first stage ozone aeration reation kettle passes through ozone pipeline 3 and ozone outlet intercommunication of ozone generation heap, the ozone outlet of last one-level ozone outlet and the ozone inlet of next stage ozone aeration reation kettle passes through ozone pipeline intercommunication, each stage ozone inlet of the ozone shower nozzle, each stage has the diameter of the air jet nozzle that shows the diameter is little one-level ozone shower nozzle with the last stage ozone shower nozzle.
Ozone enters the first-stage ozone aeration reaction kettle from a plurality of ozone inlets at the bottom after being prepared by the ozone generating stack, water in the first-stage ozone aeration reaction kettle is treated, then enters the second-stage ozone aeration reaction kettle after coming out from an ozone outlet of the first-stage ozone aeration reaction kettle, water in the second-stage ozone aeration reaction kettle is treated, the concentration of ozone is gradually reduced by stage, finally the treated water flows into the second-stage sedimentation tank, and finally the first-stage ozone is treated by a catalyst.
Because reation kettle water inlet and reation kettle delivery port all are close to the reation kettle lower part, and a plurality of ozone inlets have been seted up along extending direction bottom to every level ozone aeration reation kettle, and a plurality of ozone outlets have been seted up at the top, guarantee to treat water in the lower half in the reation kettle, ozone gets into to disinfect the water from the reation kettle bottom, and remaining ozone flows to in the next level reation kettle from the top, accomplishes aeration treatment step by step. The method ensures that no residual ozone exists in water, and the water to be treated in the primary sedimentation tank is gradually reduced from low concentration to high concentration, the multistage ozone aeration reaction kettle is adopted, the ozone concentration of the bottom layer is large, and the mode of gradual decrease is adopted, so that the ozone utilization rate is improved, and the treatment efficiency is improved.
Further, a plurality of water outlets on the primary sedimentation tank are gradually raised and have the same height difference with the corresponding water inlets of the reaction kettles. The multistage waterways are guaranteed to enter each stage of ozone aeration reaction kettle under the same pressure, the treatment effect and the treatment efficiency are guaranteed, the equipment is enabled to run stably and reliably, and the service life of the equipment is prolonged.
Furthermore, the inlet and outlet of each stage of ozone pipeline are provided with a water return bend 6, so that sewage is prevented from being mixed into the air path.
In summary, the ozone disinfection method and equipment for water have the advantages of low operation cost, convenient preparation, good disinfection effect, high treatment efficiency and no ozone residue in water.
Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides an ozone disinfection equipment of water, a serial communication port, including one-level sedimentation tank, ozone generation heap, multistage ozone aeration reation kettle, second grade sedimentation tank and catalyst, a plurality of delivery ports have been seted up on the one-level sedimentation tank, a plurality of water inlets have been seted up on the second grade sedimentation tank, the level direction equidistance is arranged between the multistage ozone aeration reation kettle and every adjacent two-stage is risen step by step and have the same difference in height, the reation kettle water inlet is seted up to each stage ozone aeration reation kettle one end, the reation kettle delivery port is seted up to the other end, a plurality of ozone inlets have been seted up along extending direction bottom to each stage ozone aeration reation kettle, a plurality of ozone outlets have been seted up at the top, reation kettle water inlet and reation kettle delivery port all are close to the reation kettle lower part, each stage reation kettle delivery port and the delivery port of corresponding one-level sedimentation tank pass through the pipeline intercommunication, a plurality of delivery ports on stage sedimentation tank rise step by step and the same with the difference in height of corresponding reation kettle water inlet, the ozone inlet of first stage ozone aeration reation kettle passes through ozone pipeline and ozone outlet intercommunication with the ozone outlet of ozone generation's ozone of the reactor, the ozone outlet of last one-level ozone shower nozzle diameter of the air nozzle that the diameter of the ozone aeration reactor is little bit is connected with the air jet reactor of the ozone aeration reactor of the diameter of the last stage ozone shower nozzle.
2. The apparatus of claim 1, wherein each stage of ozone pipe has a counter trap at its inlet and outlet.
3. A method for ozone disinfection of water, characterized in that the water is disinfected by an ozone disinfection apparatus according to claim 1 or 2, comprising the following process steps:
firstly, preparing 30% high-concentration ozone gas;
step two, introducing the high-concentration ozone gas prepared in the step one into a multistage ozone aeration reaction kettle;
thirdly, injecting water to be disinfected into a waterway of the multistage ozone aeration reaction kettle;
step four, high-concentration ozone gas is led into the multistage ozone aeration reaction kettle step by step to disinfect water, the diameters of bubbles are reduced step by step, ozone is dissolved step by step, and the ozone concentration is reduced;
fifthly, the ozone after the last stage of aeration passes through a catalyst to convert the residual ozone into oxygen, and the ozone concentration is reduced to the national standard allowable value.
4. A method of ozone disinfection of water as claimed in claim 3, wherein the water to be disinfected is injected into the multistage ozone aeration reactor waterway at equal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481937.0A CN111704232B (en) | 2020-05-28 | 2020-05-28 | Ozone disinfection method and equipment for water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481937.0A CN111704232B (en) | 2020-05-28 | 2020-05-28 | Ozone disinfection method and equipment for water |
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| CN111704232A CN111704232A (en) | 2020-09-25 |
| CN111704232B true CN111704232B (en) | 2023-09-12 |
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| EP0549413A1 (en) * | 1991-12-20 | 1993-06-30 | Trailigaz" - Compagnie Generale De L'ozone | Water treatment process for eliminating viruses and pesticides |
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| CN103145229A (en) * | 2013-03-12 | 2013-06-12 | 北京科技大学 | Ozone contact optimal dosing method in drinking water treatment and device thereof |
| CN106315823A (en) * | 2016-10-27 | 2017-01-11 | 武汉工程大学 | Ozone aeration reaction equipment and wastewater treatment method thereof |
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| CN208883561U (en) * | 2018-09-21 | 2019-05-21 | 四川恒泰环境技术有限责任公司 | A kind of multistage cross flow ozone reactor |
| CN110330094A (en) * | 2019-07-17 | 2019-10-15 | 新疆工程学院 | The method of the oxidative degradation industrial organic waste water of ozone utilization rate is improved using tandem reaction device |
| CN110615521A (en) * | 2019-08-19 | 2019-12-27 | 广东卓信环境科技股份有限公司 | Ozone catalytic oxidation tank for treating wastewater |
-
2020
- 2020-05-28 CN CN202010481937.0A patent/CN111704232B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0549413A1 (en) * | 1991-12-20 | 1993-06-30 | Trailigaz" - Compagnie Generale De L'ozone | Water treatment process for eliminating viruses and pesticides |
| JP2001334277A (en) * | 2000-05-29 | 2001-12-04 | Sasakura Engineering Co Ltd | Ozone reaction apparatus for wastewater |
| CN102897937A (en) * | 2011-07-27 | 2013-01-30 | 广东粤海控股有限公司 | Ozone-adding two-step jet mixing method multistage reactor |
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| CN102583850A (en) * | 2012-03-08 | 2012-07-18 | 清华大学 | Ultraviolet joint ozone system for realizing micro-polluted water treatment |
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| CN206486337U (en) * | 2017-02-20 | 2017-09-12 | 湖南永清水务有限公司 | It is a kind of to reduce the processing system of livestock breeding wastewater bio-chemical effluent colourity |
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| CN110330094A (en) * | 2019-07-17 | 2019-10-15 | 新疆工程学院 | The method of the oxidative degradation industrial organic waste water of ozone utilization rate is improved using tandem reaction device |
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