CN211056788U - Ozone catalytic oxidation system of water-gas circulating fluidized bed - Google Patents
Ozone catalytic oxidation system of water-gas circulating fluidized bed Download PDFInfo
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- CN211056788U CN211056788U CN201922027194.5U CN201922027194U CN211056788U CN 211056788 U CN211056788 U CN 211056788U CN 201922027194 U CN201922027194 U CN 201922027194U CN 211056788 U CN211056788 U CN 211056788U
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Abstract
The utility model discloses a water gas circulating fluidized bed ozone catalytic oxidation system, including the ozone reaction tower, the inner chamber of ozone reaction tower is separated into fluidization chamber and catalytic reaction room by supreme sieve through being fixed in on its inner wall down. Ozone is sucked into the ejector under the action of negative pressure formed when the wastewater passes through the ejector at high speed and is mixed with the wastewater in the ejector in advance, so that the solubility of the ozone in water and the contact time of the wastewater and the ozone are increased, and the ozone oxidation efficiency is improved; moreover, the system realizes high-speed circulation of wastewater by arranging the water circulation structure between the bottom and the upper part of the fluidization chamber, so that the filler in the filler layer is in a fluidization state under the action of water power, the ozone bubbles are smashed by the filler in the fluidization state, and the ozone and the wastewater are fully mixed, thereby increasing the mass transfer efficiency, improving the ozone utilization rate, further improving the sewage treatment effect and enabling the sewage discharge to reach the standard.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a aqueous vapor circulating fluidized bed ozone catalytic oxidation system.
Background
The content of the organic pollutants difficult to degrade in the pharmaceutical wastewater is high, the components are complex, the chromaticity is high, the toxicity is high, the biodegradability is poor, and the traditional biochemical treatment process is difficult to meet the emission standard requirement. Ozone is a strong oxidant, the oxidability is second to fluorine, the reaction speed is high, the oxidation product is O2, secondary pollution and sludge are not generated, and the ozone is widely applied to the field of wastewater treatment. The ozone catalytic oxidation is to utilize the hydroxyl radical (H) with stronger oxidability generated by ozone under the action of a catalyst, and can non-selectively oxidize refractory organic matters in the wastewater into water, carbon dioxide and low-toxic or non-toxic small molecular substances, reduce the COD value in the wastewater and improve the biodegradability of the wastewater. But the ozone solubility is low, the gas-water mixing effect is poor, the mass transfer efficiency is poor, the ozone adding amount is large, the utilization rate is low, and the application of the ozone catalytic oxidation in the wastewater treatment is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a steam circulating fluidized bed ozone catalytic oxidation system is provided, which can improve the air-water mixing effect and ensure that the wastewater treatment effect reaches the emission standard.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a aqueous vapor circulating fluidized bed ozone catalytic oxidation system, includes ozone reaction tower, its characterized in that: the inner cavity of the ozone reaction tower is divided into a fluidization chamber and a catalytic reaction chamber from bottom to top through a sieve plate fixed on the inner wall of the ozone reaction tower; the fluidized chamber is filled with granular filler, the upper part of the fluidized chamber is provided with a space for enabling the filler to flow, the bottom of the fluidized chamber is provided with a wastewater inlet, a circulating water pipe is connected between the bottom and the upper part of the fluidized chamber, two ports of the wastewater inlet and the circulating water pipe are respectively provided with a filter screen with the aperture smaller than the grain diameter of the filler particles, the circulating water pipe is provided with a circulating water pump for guiding water at the top of the fluidized chamber back to the bottom, the circulating water pipe is also provided with an ejector, and a gas inlet of the ejector is connected with ozone; the lower part of the catalytic reaction chamber is provided with a catalyst layer, the top of the catalytic reaction chamber is provided with a tail gas discharge port, and the upper part of the catalytic reaction chamber is provided with a water outlet.
The further technical scheme is as follows: and a circulating gas pipe is connected between the upper part of the catalytic reaction chamber and the bottom of the fluidization chamber, a circulating gas pump for leading gas on the upper part of the catalytic reaction chamber to flow back to the bottom of the fluidization chamber is arranged on the circulating gas pipe, and a filter screen with the aperture smaller than the particle size of the filler particles is arranged at one end of the circulating gas pipe connected with the fluidization chamber.
The further technical scheme is as follows: the filler is quartz sand, ceramic particles or alumina particles.
The further technical scheme is as follows: the particle size of the filler is 0.5-5 mm.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
ozone is sucked into the ejector under the action of negative pressure formed when the wastewater passes through the ejector at high speed and is mixed with the wastewater in the ejector in advance, so that the solubility of the ozone in water and the contact time of the wastewater and the ozone are increased, and the ozone oxidation efficiency is improved;
moreover, the system realizes high-speed circulation of wastewater by arranging the water circulation structure between the bottom and the upper part of the fluidization chamber, so that the filler in the filler layer is in a fluidization state under the action of water power, the ozone bubbles are smashed by the filler in the fluidization state, and the ozone and the wastewater are fully mixed, thereby increasing the mass transfer efficiency, improving the ozone utilization rate, further improving the sewage treatment effect and enabling the sewage discharge to reach the standard.
The sieve plate plays a role in supporting the catalyst on one hand, and the aperture of the sieve pore is smaller than the particle sizes of the catalyst and the filler on the other hand, so that the catalyst or the filler can be prevented from passing through the sieve pore, and the problem that the active components of the catalyst fall off and are inactivated due to the friction collision between the catalyst and the filler in a fluidized state is avoided.
In addition, the water inlet of the circulating water pipe is positioned below the sieve plate, so that the impact of the fluidized filler high-speed water flow on the catalyst is avoided, and the service life of the catalyst is prolonged.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, a water-gas circulating fluidized bed ozone catalytic oxidation system comprises an ozone reaction tower, wherein an inner cavity of the ozone reaction tower is divided into a fluidizing chamber 1 and a catalytic reaction chamber 3 from bottom to top by a sieve plate 4 fixed on the inner wall of the ozone reaction tower. The fluidization chamber 1 is filled with granular filler, wherein the filler is quartz sand, ceramic particles or alumina particles, and is good in strength and not easy to pulverize. And the particle size of the preferable filler is 0.5-5 mm, so that the filler is more easily in a fluidized state, and the gas-water mixing degree is enhanced. The device comprises a fluidization chamber 1, a space for enabling filler to flow is arranged on the upper portion of the fluidization chamber 1, a wastewater inlet 5 is formed in the bottom of the fluidization chamber 1, a circulating water pipe 6 is connected between the bottom of the fluidization chamber 1 and the upper portion of the fluidization chamber 1, two ports of the wastewater inlet 5 and the circulating water pipe 6 are respectively provided with a filter screen with the aperture smaller than the particle size of filler particles, a circulating water pump 7 used for leading water at the top of the fluidization chamber 1 back to the bottom is arranged on the circulating water pipe 6, an ejector 8 is further arranged on the circulating water pipe 6, and a gas inlet 9 of the ejector 8 is connected with ozone. The lower part of the catalytic reaction chamber 3 is provided with a catalyst layer 2, the top of the catalytic reaction chamber is provided with a tail gas discharge port 10, and the upper part of the catalytic reaction chamber is provided with a water outlet 11.
When the water-gas circulating fluidized bed ozone catalytic oxidation system is used, the wastewater inlet 5 is connected with a wastewater source to be treated, the gas inlet 9 of the ejector 8 is connected with ozone, the ozone is sucked into the ejector 8 under the action of negative pressure formed when the wastewater passes through the ejector 8 at a high speed, and when the system works, the wastewater and the ozone continuously enter the system. The circulating water pump 7 is started, so that a part of wastewater continuously circulates at a high speed in the fluidization chamber 1, the filler in the filler layer is in a fluidization state under the action of water power, along with the continuous entering of the wastewater, the water body and the ozone are mixed in the fluidization chamber 1 and then enter the catalytic reaction chamber 3, the ozone generates hydroxyl free radicals with stronger oxidability under the action of a catalyst, and refractory organic matters in the wastewater are oxidized into water, carbon dioxide and low-toxic or non-toxic micromolecular substances, the COD value in the wastewater is reduced, and the biodegradability of the wastewater is improved. The degraded waste water reaches the discharge standard and can be directly discharged from the water outlet 11. The arrangement of the tail gas discharge port 10 can keep the pressure in the ozone reaction tower balanced.
Ozone is sucked into the ejector 8 under the action of negative pressure formed when the wastewater passes through the ejector 8 at high speed, and is mixed with the wastewater in the ejector 8 in advance, so that the solubility of the ozone in the water and the contact time of the wastewater and the ozone are increased, and the ozone oxidation efficiency is improved; moreover, the system realizes high-speed circulation of wastewater by arranging the water circulation structure between the bottom and the upper part of the fluidization chamber 1, so that the filler in the filler layer is in a fluidization state under the action of water power, the filler in the fluidization state breaks ozone bubbles, and ozone and wastewater are fully mixed, thereby increasing the mass transfer efficiency, improving the ozone utilization rate, further improving the sewage treatment effect and enabling the sewage discharge to reach the standard.
The sieve plate 4 plays a role of supporting the catalyst on one hand, and the aperture of the sieve pore is smaller than the particle size of the catalyst and the filler on the other hand, so that the catalyst or the filler can be prevented from passing through the sieve pore, and the problem that the catalyst active component falls off and is inactivated due to the friction collision of the catalyst and the filler in a fluidized state is avoided. In addition, the water inlet of the circulating water pipe 6 is positioned below the sieve plate 4, so that the height of fluidization movement of the filler is limited, the impact of high-speed water flow on the catalyst is avoided, and the service life of the catalyst is prolonged.
In order to improve the utilization rate of ozone, an ozone recycling structure is further arranged in the system, specifically, a circulating gas pipe 12 is connected between the upper part of the catalytic reaction chamber 3 and the bottom of the fluidization chamber 1, a circulating gas pump 13 for guiding gas at the upper part of the catalytic reaction chamber 3 back to the bottom of the fluidization chamber 1 is arranged on the circulating gas pipe 12, and a filter screen with the aperture smaller than the particle size of filler particles is arranged at one end of the circulating gas pipe 12 connected with the fluidization chamber 1. After the circulating air pump 13 is started, a part of tail gas entering the top of the catalytic reaction chamber 3 is discharged to maintain the pressure balance in the tower, a part of gas is returned to the fluidization chamber 1 through the circulating air pipe 12 and is reused, and unreacted ozone returns to the ozone reaction tower through the circulating air pipe 12, so that the cyclic utilization of ozone is realized, the ozone utilization rate is improved, the ozone adding amount is reduced, and the wastewater treatment cost is reduced. And the circulating tail gas further increases the fluidization degree of the filler, improves the gas-water mixing degree and increases the mass transfer efficiency.
The arrangement of the filter screens at all positions in the system can prevent the filler from entering the circulating air pipe 12, the circulating water pipe 6 and the water inlet pipe to cause the problems of pipeline blockage and filler loss.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (4)
1. The utility model provides a aqueous vapor circulating fluidized bed ozone catalytic oxidation system, includes ozone reaction tower, its characterized in that: the inner cavity of the ozone reaction tower is divided into a fluidization chamber (1) and a catalytic reaction chamber (3) from bottom to top by a sieve plate (4) fixed on the inner wall of the ozone reaction tower; the fluidized bed is characterized in that granular fillers are filled in the fluidized chamber (1), a space for enabling the fillers to flow is formed in the upper portion of the fluidized chamber (1), a wastewater inlet (5) is formed in the bottom of the fluidized chamber (1), a circulating water pipe (6) is connected between the bottom and the upper portion of the fluidized chamber (1), two ports of the wastewater inlet (5) and the circulating water pipe (6) are respectively provided with a filter screen with the aperture smaller than the particle size of the filler particles, a circulating water pump (7) used for guiding water at the top of the fluidized chamber (1) back to the bottom is arranged on the circulating water pipe (6), a jet device (8) is further arranged on the circulating water pipe (6), and a gas inlet (9) of the jet device (8) is connected with ozone; the lower part of the catalytic reaction chamber (3) is provided with a catalyst layer (2), the top of the catalytic reaction chamber is provided with a tail gas discharge port (10), and the upper part of the catalytic reaction chamber is provided with a water outlet (11).
2. The water gas circulating fluidized bed ozone catalytic oxidation system of claim 1, wherein: be connected with between the upper portion of catalytic reaction room (3) and the bottom of fluidization chamber (1) circulating gas pipe (12), be equipped with on circulating gas pipe (12) and be used for leading back the gas on catalytic reaction room (3) upper portion circulating gas pump (13) of fluidization chamber (1) bottom, the one end that circulating gas pipe (12) and fluidization chamber (1) are connected is equipped with the filter screen that hinders that the aperture is less than filler particle diameter.
3. The water gas circulating fluidized bed ozone catalytic oxidation system of claim 1, wherein: the filler is quartz sand, ceramic particles or alumina particles.
4. The water gas circulating fluidized bed ozone catalytic oxidation system of claim 1, wherein: the particle size of the filler is 0.5-5 mm.
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| CN201922027194.5U CN211056788U (en) | 2019-11-21 | 2019-11-21 | Ozone catalytic oxidation system of water-gas circulating fluidized bed |
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| CN201922027194.5U CN211056788U (en) | 2019-11-21 | 2019-11-21 | Ozone catalytic oxidation system of water-gas circulating fluidized bed |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960523A (en) * | 2020-09-04 | 2020-11-20 | 浙江浙能技术研究院有限公司 | Method and device for realizing gas-water mixing and activating through secondary hydrodynamic cavitation and ultrasonic cavitation |
| CN112499750A (en) * | 2021-01-25 | 2021-03-16 | 河南弘康环保科技有限公司 | Get rid of effectual inner loop ozone catalytic oxidation sewage treatment plant |
| CN112499749A (en) * | 2021-01-25 | 2021-03-16 | 河南弘康环保科技有限公司 | Sewage treatment equipment adopting ozone purification |
| CN113233571A (en) * | 2021-03-01 | 2021-08-10 | 东北大学 | Oscillating cavitation jet fluidized bed catalytic oxidation effluent treatment plant |
| CN113788560A (en) * | 2021-09-17 | 2021-12-14 | 陕西华陆化工环保有限公司 | Ozone catalytic oxidation system for advanced wastewater treatment |
| CN114133077A (en) * | 2021-12-09 | 2022-03-04 | 中国石油化工股份有限公司荆门分公司 | Method for treating alkaline residue wastewater by combined oxidation |
| CN115353256A (en) * | 2022-08-22 | 2022-11-18 | 山东华城工程技术有限公司 | Water purification treatment process for micro-polluted surface water source water |
| WO2024000837A1 (en) * | 2022-06-28 | 2024-01-04 | 广东邦普循环科技有限公司 | Treatment method for manganese-containing wastewater |
-
2019
- 2019-11-21 CN CN201922027194.5U patent/CN211056788U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960523A (en) * | 2020-09-04 | 2020-11-20 | 浙江浙能技术研究院有限公司 | Method and device for realizing gas-water mixing and activating through secondary hydrodynamic cavitation and ultrasonic cavitation |
| CN111960523B (en) * | 2020-09-04 | 2023-12-12 | 浙江浙能技术研究院有限公司 | Method and device for realizing gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation |
| CN112499750A (en) * | 2021-01-25 | 2021-03-16 | 河南弘康环保科技有限公司 | Get rid of effectual inner loop ozone catalytic oxidation sewage treatment plant |
| CN112499749A (en) * | 2021-01-25 | 2021-03-16 | 河南弘康环保科技有限公司 | Sewage treatment equipment adopting ozone purification |
| CN113233571A (en) * | 2021-03-01 | 2021-08-10 | 东北大学 | Oscillating cavitation jet fluidized bed catalytic oxidation effluent treatment plant |
| CN113788560A (en) * | 2021-09-17 | 2021-12-14 | 陕西华陆化工环保有限公司 | Ozone catalytic oxidation system for advanced wastewater treatment |
| CN114133077A (en) * | 2021-12-09 | 2022-03-04 | 中国石油化工股份有限公司荆门分公司 | Method for treating alkaline residue wastewater by combined oxidation |
| WO2024000837A1 (en) * | 2022-06-28 | 2024-01-04 | 广东邦普循环科技有限公司 | Treatment method for manganese-containing wastewater |
| CN115353256A (en) * | 2022-08-22 | 2022-11-18 | 山东华城工程技术有限公司 | Water purification treatment process for micro-polluted surface water source water |
| CN115353256B (en) * | 2022-08-22 | 2024-04-16 | 山东华城工程技术有限公司 | Water purification treatment process for micro-polluted surface water source water |
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