CN110921944A - Small-size integrated form oily waste water advanced oxidation combined treatment system - Google Patents
Small-size integrated form oily waste water advanced oxidation combined treatment system Download PDFInfo
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- CN110921944A CN110921944A CN201911338689.8A CN201911338689A CN110921944A CN 110921944 A CN110921944 A CN 110921944A CN 201911338689 A CN201911338689 A CN 201911338689A CN 110921944 A CN110921944 A CN 110921944A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
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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
- C02F1/722—Oxidation by peroxides
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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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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Abstract
The invention discloses a small integrated oil-containing wastewater advanced oxidation combined treatment system, which is divided into a pretreatment module, an advanced oxidation combined technology treatment module, a detection module and a wastewater discharge module, the method has the advantages that the hydrodynamic cavitation coupling impinging stream, the gas-liquid mixing and mass transfer and the atmospheric pressure ionization discharge technology are combined to treat the organic wastewater, a circulating working mode is adopted, the defects of the traditional treatment method and a single treatment method are overcome, a large number of free radicals with strong oxidizing property can be generated in the reaction process, the reaction speed is high, the application range is wide, all organic matters can be almost oxidized until the organic matters are completely decomposed by the free radicals with high oxidation potential generated in the reaction process, the reaction condition is mild, a series of chain reactions can be induced, and most importantly, the method can be combined with other water treatment technologies to be used as pretreatment or advanced treatment of other treatment technologies. Has very important theoretical significance and wide application prospect.
Description
Technical Field
The invention relates to the field of oily wastewater treatment, in particular to a small integrated oily wastewater advanced oxidation combined treatment system which combines wastewater pretreatment, hydrodynamic cavitation, atmospheric pressure ionization and gas-liquid mass transfer technologies to treat oily wastewater.
Background
Along with the rapid development of the township construction and society of China, the water consumption and the sewage discharge amount of industry, agriculture and living are greatly increased, but the relative lag of waste water treatment facilities enables a large amount of waste water to be directly discharged without treatment, so that the surrounding environment and human life are greatly threatened. In the field of oily wastewater treatment, oil substances mostly exist in the form of emulsified oil, dispersed oil and adsorbed oil in wastewater. In this form, the oil is in suspension and the particles are fine and difficult to remove. Another reason why the oily wastewater is difficult to treat is that the oily wastewater is widely available and is produced in large quantities in many production processes, such as oil extraction processes, production processes, and the like.
The oily wastewater has the characteristics of easy emulsification, poor biodegradability, complex components, difficult degradation and the like. The traditional oily wastewater treatment equipment is mainly general separation treatment equipment for separating oil from water in oily wastewater, but the separation cannot completely treat the wastewater to the range meeting the discharge standard, and the traditional treatment method needs to be combined with other methods for use, and needs to add additives, so that the reaction time is long, and the treatment process is complex.
The prior art adopts advanced oxidation technology aiming at the treatment of oily sewage, one advanced oxidation technology is used singly, the treatment effect is difficult to achieve, and several advanced oxidation technologies need to be combined for treatment. Meanwhile, the combined treatment causes large occupied area of the device and insufficient integration. Therefore, a small-sized integrated oily wastewater treatment device with high treatment efficiency is required.
Disclosure of Invention
The invention aims to solve the problem of providing a small integrated organic wastewater advanced oxidation combined treatment system, which combines the wastewater pretreatment, hydrodynamic cavitation, atmospheric pressure ionization and gas-liquid mass transfer technologies to treat organic wastewater, makes up for the defect of a single treatment method, can be combined with other wastewater treatment technologies, improves the treatment efficiency of organic wastewater and reduces energy consumption.
The invention adopts the following technical scheme: a small integrated oil-containing wastewater advanced oxidation combined treatment system comprises a pretreatment module, an advanced oxidation module, a discharge module, a control module and a detection module; the inlet of the pretreatment module is connected with the sewage tank, the outlet of the pretreatment module is connected with the advanced oxidation module, and the pretreatment module is used for carrying out primary treatment on the wastewater; the advanced oxidation module is used for deeply oxidizing the pretreated wastewater and comprises a liquid storage tank, a hydrodynamic cavitation device, a plasma discharge device and a high-efficiency mixer, wherein the inlet of the liquid storage tank is connected with the pretreatment module, the outlet of the liquid storage tank is connected with the hydrodynamic cavitation device, the outlet of the hydrodynamic cavitation device is connected with the inlet of the high-efficiency mixer, the outlet of the plasma discharge device is connected with the inlet of the high-efficiency mixer, and the outlet of the high-efficiency mixer is connected with the inlet of the liquid storage tank; the discharge module is connected with the outlet of the liquid storage tank.
The pretreatment module comprises a filter for filtering solid impurities and an air floatation device for removing emulsified oil, which are sequentially connected, so as to carry out preliminary treatment on oily wastewater.
The hydraulic cavitation device comprises at least two collision flow cavitators which are arranged in parallel so as to meet the requirements of different flow working conditions and increase the treatment efficiency.
The impinging stream cavitator comprises at least two cavitation nozzles which are oppositely arranged, the collision distance and the flow rate of the impinging stream cavitator can be adjusted, and the impinging stream cavitator adopts a cavitation coupling impinging stream mode to collide in parallel in an impinging stream chamber at a certain speed so as to enhance the cavitation effect.
The high-efficiency mixing and dissolving device is characterized in that a fluid inlet of the high-efficiency mixing and dissolving device is connected with an outlet of the hydrodynamic cavitation device, a gas inlet is connected with an outlet of the plasma discharge device, the high-efficiency mixing and dissolving device is of a self-oscillation cavity or venturi tube structure, negative pressure and cavitation can be generated inside the high-efficiency mixing and dissolving device, active oxygen prepared by atmospheric pressure ionization is sucked in the high-efficiency mixing and dissolving device, the active oxygen is efficiently mixed and dissolved in wastewater, and the gas-liquid mass transfer and oxidation.
The plasma discharge device comprises discharge tubes and a power supply, wherein the power supply is a high-frequency high-voltage power supply with adjustable voltage peak value and frequency so as to adjust the number of the discharge tubes and the discharge power according to the concentration of pollutants in the wastewater.
The control system is connected with the detection module and used for receiving detection data of the detection module so as to control the control system.
The treatment method of the small integrated oily wastewater advanced oxidation combined treatment system comprises the following working processes:
the method comprises the following steps: pretreating the oily wastewater to remove suspended matters and solid impurities in the oily wastewater;
step two: carrying out cyclic advanced oxidation treatment on the pretreated oily wastewater to remove oil in the pretreated oily wastewater until the pretreated oily wastewater reaches a discharge standard;
step three: and discharging the treated wastewater reaching the standard.
The invention provides a small integrated organic wastewater advanced oxidation combined treatment system which adopts a circulating treatment mode and has a compact integral structure. The organic wastewater is treated by combining the wastewater pretreatment, the cavitation impact flow technology, the gas-liquid mixing and mass transfer technology and the atmospheric pressure ionization discharge technology, so that the defects of the traditional treatment method and the single treatment method are overcome, the cost benefit is high, and the environment is friendly. The hydroxyl free radical with higher oxidation potential generated in the reaction process can almost oxidize all organic matters until the organic matters are completely decomposed, the reaction condition is mild, a series of chain reactions can be induced, and most importantly, the hydroxyl free radical can be used together with other water treatment technologies to be used as pretreatment or advanced treatment of other treatment technologies.
Drawings
Fig. 1 is a schematic structural diagram of the principle of the invention.
FIG. 2 is a schematic view of the gas-liquid mixer of the present invention.
Fig. 3.1 is a schematic view I of the appearance shape of the system of the invention.
Fig. 3.2 is a schematic view II of the external appearance of the system of the present invention.
FIG. 4 is a schematic diagram of a hydrodynamic cavitation coupled impinging stream structure according to the present invention.
In the figure: 1. the system comprises a first water pump, a second water pump, a first electric valve, a first filter, a first pressure gauge, a water tank, an overflow valve, a gas-liquid mixing and dissolving device, a second electric valve, a power supply, a third electric valve, an oxygen generator, a second pressure gauge, a motor, a third pressure gauge, a fourth electric valve, a water pump, a second filter, a collision flow reaction chamber, a first liquid flow sensor, a second electric valve, a collision flow reaction chamber, a second liquid flow sensor, a first liquid flow sensor, a second liquid flow sensor, a sixth electric valve, a.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3.1, fig. 3.2 and fig. 4, the small integrated organic wastewater advanced oxidation combined technology treatment system provided by the invention comprises a first water pump (1), a first electric valve (2), a first filter (3), a first pressure gauge (4), a water tank (5), an overflow valve (6), a gas-liquid mixing and dissolving device (7), a second electric valve (8), a power supply (9) and a third electric valve (10), the device comprises an oxygen generator (11), a second pressure gauge (12), a motor (13), a third pressure gauge (14), a fourth electric valve (15), a second water pump (16), a second filter (17), an impinging stream reaction chamber (18), a first liquid flow sensor (19), a fifth electric valve (20), a second liquid flow sensor (21), a sixth electric valve (22), an SED plasma generation device (23) and a gas flow sensor (24).
The specific implementation mode of the invention is as follows: the inlet of the pretreatment module is connected with the sewage tank, the outlet of the pretreatment module is connected with the advanced oxidation module, and the pretreatment module is used for carrying out primary treatment on the wastewater; the advanced oxidation module is used for deeply oxidizing the pretreated wastewater and comprises a liquid storage tank, a hydrodynamic cavitation device, a plasma discharge device and a high-efficiency mixer, wherein the inlet of the liquid storage tank is connected with the pretreatment module, the outlet of the liquid storage tank is connected with the hydrodynamic cavitation device, the outlet of the hydrodynamic cavitation device is connected with the inlet of the high-efficiency mixer, the outlet of the plasma discharge device is connected with the inlet of the high-efficiency mixer, and the outlet of the high-efficiency mixer is connected with the inlet of the liquid storage tank; the discharge module is connected with the outlet of the liquid storage tank.
The pretreatment module comprises a filter for filtering solid impurities and an air floatation device for removing emulsified oil, which are sequentially connected, so as to carry out preliminary treatment on oily wastewater.
The hydraulic cavitation device comprises at least two collision flow cavitators which are arranged in parallel so as to meet the requirements of different flow working conditions and increase the treatment efficiency.
The impinging stream cavitator comprises at least two cavitation nozzles which are oppositely arranged, the collision distance and the flow rate of the impinging stream cavitator can be adjusted, and the impinging stream cavitator adopts a cavitation coupling impinging stream mode to collide in parallel in an impinging stream chamber at a certain speed so as to enhance the cavitation effect.
The high-efficiency mixing and dissolving device is characterized in that a fluid inlet of the high-efficiency mixing and dissolving device is connected with an outlet of the hydrodynamic cavitation device, a gas inlet is connected with an outlet of the plasma discharge device, the high-efficiency mixing and dissolving device is of a self-oscillation cavity or venturi tube structure, negative pressure and cavitation can be generated inside the high-efficiency mixing and dissolving device, active oxygen prepared by atmospheric pressure ionization is sucked in the high-efficiency mixing and dissolving device, the active oxygen is efficiently mixed and dissolved in wastewater, and the gas-liquid mass transfer and oxidation.
The plasma discharge device comprises discharge tubes and a power supply, wherein the power supply is a high-frequency high-voltage power supply with adjustable voltage peak value and frequency so as to adjust the number of the discharge tubes and the discharge power according to the concentration of pollutants in the wastewater.
The control system is connected with the detection module and used for receiving detection data of the detection module so as to control the control system.
The treatment method of the small integrated oily wastewater advanced oxidation combined treatment system comprises the following steps:
the method comprises the following steps: pretreating the oily wastewater to remove suspended matters and solid impurities in the oily wastewater,
step two: the pretreated oily wastewater is subjected to circulating advanced oxidation treatment to remove oil in the pretreated oily wastewater until the oily wastewater reaches the discharge standard,
step three: and discharging the treated wastewater reaching the standard.
Waste water in the sedimentation tank passes through first motorised valve (2) after first water pump (1), and first filter (3) get into water tank (5), and first motorised valve (2) control water tank (5) inlet pipe break-make and flow size. When the wastewater to be treated in the water tank (5) reaches the required volume height, the fourth electric valve (15) is opened, the wastewater is treated under the action of the second water pump (16) and the motor (13) to start internal circulation and reach the impinging stream reaction chamber (18), the second filter (17) arranged on the inlet pipeline of the second water pump (16) is used for filtering impurities in the wastewater, when the wastewater is required to be cleaned, only the detachable filter cartridge is taken out, and the wastewater is filled again after treatment. An overflow valve (6) is arranged on an outlet pipeline of the second water pump (16) and plays a role in protecting the pipeline; and a third pressure gauge (14) is arranged on a connecting pipeline between the second water pump (16) and the impinging stream reaction chamber (18) and is used for detecting the pressure at the outlet of the second water pump (16). Two water inlets are distributed at two ends of the impinging stream reaction chamber (18), a fifth electric valve (20), a sixth electric valve (22), a first liquid flow sensor (19) and a second liquid flow sensor (21) are respectively arranged on pipelines of each water inlet and used for monitoring the flow of each pipeline and matching impinging stream parameters, and waste water is conveyed to the gas-liquid mixing and dissolving device (7) after passing through the impinging stream reaction chamber (18). The oxygen generator (11) generates oxygen and water vapor, and transmits the gas to the SED plasma generating device (23) after the third electric valve (10) is opened, and the gas flow sensor (24) is arranged on a connecting pipeline of the industrial oxygen generator (11) and the SED plasma generating device (23) and monitors the gas flow; the SED plasma generating device (23) is excited by a power supply to carry out strong ionization discharge on the gas conveyed by the oxygen generator (11) so as to generate oxygen active particles, ozone and hydrogen peroxide chain reaction initiator gas, and the oxygen active particles, the ozone and the hydrogen peroxide chain reaction initiator gas are conveyed to the gas-liquid mixing container (7) to carry out a series of reactions with wastewater. The gas-liquid mixing and dissolving device (7) is connected with the water tank (5) through a pipeline, the purpose is to carry out circulating treatment on the wastewater after reaction, a COD online detector, a PH meter and a thermometer are arranged in the water tank (5), and the wastewater after treatment is discharged after the wastewater after treatment is detected to meet the discharge requirement.
Claims (9)
1. The utility model provides a small-size integrated form oily waste water advanced oxidation combined treatment system which characterized in that: the device comprises a pretreatment module, an advanced oxidation module, an exhaust module, a control module and a detection module; the inlet of the pretreatment module is connected with the sewage tank, the outlet of the pretreatment module is connected with the advanced oxidation module, and the pretreatment module is used for pretreating wastewater; the advanced oxidation module is used for deeply oxidizing the pretreated wastewater and comprises a liquid storage tank, a hydrodynamic cavitation device, a plasma discharge device and a high-efficiency mixer, wherein the inlet of the liquid storage tank is connected with the pretreatment module, the outlet of the liquid storage tank is connected with the hydrodynamic cavitation device, the outlet of the hydrodynamic cavitation device is connected with the inlet of the high-efficiency mixer, the outlet of the plasma discharge device is connected with the inlet of the high-efficiency mixer, and the outlet of the high-efficiency mixer is connected with the inlet of the liquid storage tank; the discharge module is connected with the outlet of the liquid storage tank.
2. The small integrated advanced oxidation combined treatment system for oily wastewater according to claim 1, characterized in that: the pretreatment module comprises a filter for filtering solid impurities and an air floatation device for removing emulsified oil, which are sequentially connected, so as to pretreat the oily sewage.
3. The small integrated advanced oxidation combined treatment system for oily wastewater according to claim 1, characterized in that: the hydraulic cavitation device comprises at least two collision flow cavitators which are arranged in parallel.
4. The small integrated advanced oxidation combined treatment system for oily wastewater as claimed in claim 3, wherein: the impinging stream cavitator comprises at least two cavitation nozzles which are oppositely arranged and are in parallel impinging in an impinging stream chamber in a cavitation coupling impinging stream mode.
5. The small integrated type oily wastewater advanced oxidation combined technology treatment system according to claim 1, characterized in that: the fluid inlet of the high-efficiency mixing and dissolving device is connected with the outlet of the hydrodynamic cavitation device, and the gas inlet is connected with the outlet of the plasma discharge device.
6. The small-sized integrated type oily wastewater advanced oxidation combined technology treatment system according to claim 1 or 5, characterized in that: the high-efficiency mixing and dissolving device is in a self-oscillation cavity or Venturi tube structure.
7. The small integrated advanced oxidation combined treatment system for oily wastewater according to claim 1, characterized in that: the plasma discharge device comprises discharge tubes and a power supply, wherein the power supply is a high-frequency high-voltage power supply with adjustable voltage peak value and frequency so as to adjust the number of the discharge tubes and the discharge power according to the concentration of pollutants in the wastewater.
8. The small integrated advanced oxidation combined treatment system for oily wastewater according to claim 1, characterized in that: the control system is connected with the detection module and used for receiving detection data of the detection module so as to control the control system.
9. A method for treating a small integrated type oil-containing wastewater advanced oxidation combined treatment system by using the system as claimed in any one of claims 1 to 8, which is characterized in that:
the method comprises the following steps: pretreating the oily wastewater to remove suspended matters and solid impurities in the oily wastewater,
step two: the pretreated oily wastewater is subjected to circulating advanced oxidation treatment to remove oil in the pretreated oily wastewater until the oily wastewater reaches the discharge standard,
step three: and discharging the treated wastewater reaching the standard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911338689.8A CN110921944A (en) | 2019-12-23 | 2019-12-23 | Small-size integrated form oily waste water advanced oxidation combined treatment system |
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| CN201911338689.8A CN110921944A (en) | 2019-12-23 | 2019-12-23 | Small-size integrated form oily waste water advanced oxidation combined treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314904A (en) * | 2021-12-11 | 2022-04-12 | 国网湖北省电力有限公司电力科学研究院 | Combined sewage treatment system and method |
| CN114314959A (en) * | 2022-01-18 | 2022-04-12 | 中国矿业大学 | Shale gas fracturing flowback fluid treatment method |
| CN117247083A (en) * | 2023-10-09 | 2023-12-19 | 北京工业大学 | System and method for degrading oily wastewater by combining miniaturized plasma with hydrodynamic cavitation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745489A (en) * | 2016-12-24 | 2017-05-31 | 青岛科技大学 | A kind of Hydrodynamic cavitation sewage disposal device |
| CN107459190A (en) * | 2017-09-21 | 2017-12-12 | 北京工业大学 | A kind of advanced oxidation organic wastewater treating system and its efficacy test method |
-
2019
- 2019-12-23 CN CN201911338689.8A patent/CN110921944A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745489A (en) * | 2016-12-24 | 2017-05-31 | 青岛科技大学 | A kind of Hydrodynamic cavitation sewage disposal device |
| CN107459190A (en) * | 2017-09-21 | 2017-12-12 | 北京工业大学 | A kind of advanced oxidation organic wastewater treating system and its efficacy test method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314904A (en) * | 2021-12-11 | 2022-04-12 | 国网湖北省电力有限公司电力科学研究院 | Combined sewage treatment system and method |
| CN114314959A (en) * | 2022-01-18 | 2022-04-12 | 中国矿业大学 | Shale gas fracturing flowback fluid treatment method |
| CN114314959B (en) * | 2022-01-18 | 2023-06-30 | 中国矿业大学 | Shale gas fracturing flowback fluid treatment method |
| CN117247083A (en) * | 2023-10-09 | 2023-12-19 | 北京工业大学 | System and method for degrading oily wastewater by combining miniaturized plasma with hydrodynamic cavitation |
| CN117247083B (en) * | 2023-10-09 | 2024-04-02 | 北京工业大学 | System and method for degrading oily wastewater by combining miniaturized plasma with hydrodynamic cavitation |
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Application publication date: 20200327 |