CN209957454U - Pure oxygen circulation system ozone sewage treatment device - Google Patents
Pure oxygen circulation system ozone sewage treatment device Download PDFInfo
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- CN209957454U CN209957454U CN201920383878.6U CN201920383878U CN209957454U CN 209957454 U CN209957454 U CN 209957454U CN 201920383878 U CN201920383878 U CN 201920383878U CN 209957454 U CN209957454 U CN 209957454U
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Abstract
Pure oxygen circulation system ozone sewage treatment device, it relates to sewage treatment technical field, concretely relates to pure oxygen circulation system ozone sewage treatment device. The device comprises an ozone generator, an ozone-sewage reaction tower, a microporous aeration head, a defoaming separator, a gas transfer tank, an industrial oxygen bottle and circulating gas conveying equipment, wherein the right side of the ozone generator is connected with the ozone-sewage reaction tower, the microporous aeration head is arranged at the bottom end inside the ozone-sewage reaction tower, the defoaming separator is arranged at the upper end of the ozone-sewage reaction tower, the defoaming separator is connected with the gas transfer tank through a pipeline, the left side of the gas transfer tank is connected with the industrial oxygen bottle, and the circulating gas conveying equipment is arranged between the ozone generator and the gas transfer tank. After the technical scheme is adopted, the utility model discloses beneficial effect does: the method can solve the problems of low oxygen utilization rate, high energy consumption, large investment and ozone pollution of tail gas in the process of preparing ozone from high-concentration oxygen and treating sewage in the traditional process.
Description
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to pure oxygen circulation system ozone sewage treatment device.
Background
Ozone is dissolved in sewage, and strong oxidizing property of the ozone is utilized to oxidize pollutants in the water so as to achieve the purpose of purifying the water; its utilization has become more and more widespread. For many difficult wastewater treatments, it is further desirable to use high concentrations of oxygen through an ozone generator to obtain high concentrations of ozone. Thereby achieving the purpose of sewage treatment. In general, the sewage treatment process comprises the following steps: air compression, air drying, air separation to obtain high-concentration oxygen, ozone generator, mixing with sewage in sewage tank (or tower or pool), purifying water, and emptying oxygen. This method has several problems: 1. low oxygen utilization rate and high energy consumption. In the process, 60 percent of energy consumption is consumed in the preparation of high-concentration oxygen by air separation, so that the energy consumption is very high; 2. due to comprehensive consideration of technical economy such as investment and the like, the concentration of oxygen can be only about 90% by the general air separation capacity, if the concentration is required to be improved, the equipment investment and the production consumption can be improved, the practical situation limits the maximum improvement of the ozone concentration, and meanwhile, due to the reason, the self-made high-concentration oxygen of about 90% cannot be used for preparing high-concentration ozone by gas circulation, and because the nitrogen which is stable and not reduced is always accumulated while the oxygen is consumed in the circulation process, the concentration can be quickly improved, so that the oxygen content is quickly reduced; 3. the ozone emission in the tail gas is easy to exceed the standard, in order to achieve a certain water quality target, the gas after reaction is objectively required to have a proper amount of balanced ozone concentration, and meanwhile, in the actual production, the flow mode is objectively difficult to control the tail end ozone concentration, so that the air pollution is easily caused during emission.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and deficiencies of the prior art, and provides a pure oxygen circulation system ozone sewage treatment device, which has the following advantages:
1. in investment, equipment for air compression, drying, separation and the like is reduced, so that the equipment for producing the whole set of ozone saves about 1/3;
2. in terms of consumption, since the raw material for obtaining ozone is a circulated gas, oxygen consumed by the system is substantially equal to the amount of ozone generated. According to the market price of 1Kg of industrial oxygen about 5 yuan, theoretically can produce 1Kg of ozone, that is to say 1Kg of ozone needs pure oxygen source cost of about 5 yuan. While the pure oxygen required by the traditional process for preparing 1Kg of ozone is not recycled; based on 6 percent of ozone content, 1/(6 percent) =16.7Kg of pure oxygen, while 1Kg of pure oxygen prepared by the traditional process consumes 1kwh of electricity; i.e. 1Kg ozone requires about 16.7kwh of electricity. Calculated according to the electricity price of 0.6 yuan/KWh, 10.2 yuan is achieved. Therefore, the cost of the oxygen source for preparing ozone by using industrial pure oxygen is only half;
3. the method has the advantages that the raw material gas is completely circulated, no tail gas is discharged, and the unreacted ozone can be taken away by the disposable oxygen to enter the environment. In addition, the noise on site is also reduced due to the reduction of the air compression process.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the device comprises an ozone generator 1, an ozone-sewage reaction tower 2, a micropore aeration head 21, a defoaming separator 3, a gas transit tank 4, an industrial oxygen bottle 5 and a circulating gas conveying device 6, wherein the right side of the ozone generator 1 is connected with the ozone-sewage reaction tower 2, the bottom end inside the ozone-sewage reaction tower 2 is provided with the micropore aeration head 21, the upper end of the ozone-sewage reaction tower 2 is provided with the defoaming separator 3, the defoaming separator 3 is connected with the gas transit tank 4 through a pipeline, the left side of the gas transit tank 4 is connected with the industrial oxygen bottle 5, the circulating gas conveying device 6 is arranged between the ozone generator 1 and the gas transit tank 4, and the method for preparing ozone-treated sewage through pure oxygen circulation comprises the following steps: after the industrial pure oxygen is used for generating ozone by the ozone generator 1, the ozone-industrial pure oxygen mixed gas enters a first-stage or respectively enters a multistage ozone-sewage reaction tower 2, and the gas is uniformly distributed and fully contacted with a liquid phase by a microporous aeration head 21; after ozone in gas is absorbed by sewage, the residual oxygen and a small amount of newly generated carbon dioxide go to the upper part of an ozone-sewage reaction tower 2, through controlling the liquid level of the ozone-sewage reaction tower 2, 15% of the space at the upper part in the ozone-sewage reaction tower 2 is a gas phase, a defoaming separator 3 is arranged at a gas outlet at the top of the ozone-sewage reaction tower 2, foam and other physical impurities in the sewage are prevented from being brought into a post-process, the gas from the ozone-sewage reaction tower 2 passes through the defoaming separator 3 and then is led into a gas transfer tank 4 through a pipeline, the gas is uniformly distributed at the bottom of the gas transfer tank 4, a layer of soda solution with the height of 30-80 cm is arranged at the bottom of the gas transfer tank 4, the carbon dioxide can be absorbed when the gas passes through the soda solution, and a certain precipitate can be formed when the soda solution absorbing the carbon dioxide generates sodium bicarbonate with a certain concentration, the gas can be collected and pumped out from the bottom of a gas transfer tank 4, the gas can be simply roasted to 270 ℃ after being filtered and then changed into sodium carbonate for reuse, meanwhile, according to the consumption of oxygen, external oxygen supplement is controlled by a flow meter 7 to flow, the gas transfer tank 4 is quantitatively supplemented, the total amount of circulating gas of the whole system is maintained to be basically constant, the external oxygen supplement amount is basically equal to or more than ozone amount per hour, the gas out of the gas transfer tank 4 needs to pass through a circulating gas conveying device 6, the pressure of the gas is improved by the circulating gas conveying device 6 through a high-pressure fan, an air power booster valve and other devices, the circulating large gas amount can be calculated according to the mode of (ozone consumption amount)/(ozone concentration), the gas out of the circulating gas conveying device 6 enters an ozone generator 1, and the mixed gas after generating ozone enters a first stage or enters a multi-stage sewage-ozone reaction tower 2 respectively, thus, the purpose of recycling the pure oxygen is achieved.
A flowmeter 7 is arranged between the ozone generator 1 and the ozone-sewage reaction tower 2.
The right end of the defoaming separator 3 is connected with a displacement blow-down pipe 8.
The upper end of the gas transit tank 4 is provided with a dehydrator 41.
The bottom of the gas transit tank 4 is provided with a soda solution, and the concentration of the soda solution is 20-28%.
After the technical scheme is adopted, the utility model discloses beneficial effect does: it has the following advantages:
1. in investment, equipment for air compression, drying, separation and the like is reduced, so that the equipment for producing the whole set of ozone saves about 1/3;
2. in terms of consumption, since the raw material for obtaining ozone is a circulated gas, oxygen consumed by the system is substantially equal to the amount of ozone generated. According to the market price of 1Kg of industrial oxygen about 5 yuan, theoretically can produce 1Kg of ozone, that is to say 1Kg of ozone needs pure oxygen source cost of about 5 yuan. While the pure oxygen required by the traditional process for preparing 1Kg of ozone is not recycled; based on 6 percent of ozone content, 1/(6 percent) =16.7Kg of pure oxygen, while 1Kg of pure oxygen prepared by the traditional process consumes 1kwh of electricity; i.e. 1Kg ozone requires about 16.7kwh of electricity. Calculated according to the electricity price of 0.6 yuan/KWh, 10.2 yuan is achieved. Therefore, the cost of the oxygen source for preparing ozone by using industrial pure oxygen is only half;
3. the method has the advantages that the raw material gas is completely circulated, no tail gas is discharged, and the unreacted ozone can be taken away by the disposable oxygen to enter the environment. In addition, the noise on site is also reduced due to the reduction of the air compression process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: ozone generator 1, ozone-sewage reaction tower 2, microporous aeration head 21, defoaming separator 3, gas transfer tank 4, dehydrator 41, industrial oxygen bottle 5, circulating gas conveying equipment 6, flowmeter 7 and displacement blow-down pipe 8.
Detailed Description
Referring to fig. 1, the technical solution adopted by the present embodiment is that it comprises an ozone generator 1, an ozone-sewage reaction tower 2, a microporous aeration head 21, a defoaming separator 3, a gas transit tank 4, an industrial oxygen bottle 5, and a circulating gas conveying device 6, the right side of the ozone generator 1 is connected with the ozone-sewage reaction tower 2, the bottom end of the inside of the ozone-sewage reaction tower 2 is provided with the microporous aeration head 21, the upper end of the ozone-sewage reaction tower 2 is provided with the defoaming separator 3, the defoaming separator 3 is connected with the gas transit tank 4 through a pipeline, the left side of the gas transit tank 4 is connected with the industrial oxygen bottle 5, 6 is arranged between the ozone generator 1 and the gas transit tank 4, it adopts industrial grade pure oxygen (content more than 99.2%) as a raw material for producing ozone, and after the sewage absorbs the ozone, collecting pure oxygen which does not react with sewage, after processes of dewatering, removing newly generated carbon dioxide, supplementing pure oxygen and the like, continuously taking the pure oxygen as a raw material for producing ozone, sending the pure oxygen into an ozone generator 1 through a circulating gas conveying device 6, because the gas possibly contains a small amount of ozone, selecting materials such as 304, 316L and the like for parts in contact with the gas, adopting ozone-resistant materials such as ABS and the like as organic sealing materials, generating an oxygen mixture containing high-concentration ozone, sending the oxygen mixture into an ozone-sewage reaction tower 2, enabling the sewage to continuously react with the ozone, enabling the reacted pure oxygen and the newly generated small amount of carbon dioxide to enter the collecting and recycling processes, because the concentration of industrial oxygen is high, the newly generated carbon dioxide in the processes is easy to be removed through alkali liquor, so that the concentration of the recovered oxygen is in a high level for a long time, and the utilization rate of the high-concentration oxygen converted into ozone is increased to more than, in the circulating process, a small amount of industrial oxygen is enriched in the space, the concentration of the oxygen is reduced, the minimum concentration of the oxygen can be determined according to the requirement in the production, when the minimum concentration is reached, the pure oxygen amount is increased, the pure oxygen is discharged from the top of the ozone-sewage reaction tower 2, the purpose of replacing the low-concentration oxygen is achieved, until the concentration in the space reaches the concentration close to the industrial oxygen concentration, and the required industrial oxygen is about 5 percent of the total consumption on the assumption that the oxygen content of 90 percent is determined as the minimum allowable concentration.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. Pure oxygen circulation system ozone sewage treatment device which characterized in that: the device comprises an ozone generator (1), an ozone-sewage reaction tower (2), a microporous aeration head (21), a defoaming separator (3), a gas transfer tank (4), an industrial oxygen bottle (5) and circulating gas conveying equipment (6), wherein the right side of the ozone generator (1) is connected with the ozone-sewage reaction tower (2), the microporous aeration head (21) is arranged at the bottom end of the inside of the ozone-sewage reaction tower (2), the defoaming separator (3) is arranged at the upper end of the ozone-sewage reaction tower (2), the defoaming separator (3) is connected with the gas transfer tank (4) through a pipeline, the left side of the gas transfer tank (4) is connected with the industrial oxygen bottle (5), and the circulating gas conveying equipment (6) is arranged between the ozone generator (1) and the gas transfer tank (4).
2. The pure oxygen recycling ozone sewage treatment plant according to claim 1, characterized in that: a flowmeter (7) is arranged between the ozone generator (1) and the ozone-sewage reaction tower (2).
3. The pure oxygen recycling ozone sewage treatment plant according to claim 1, characterized in that: the right end of the defoaming separator (3) is connected with a displacement blow-down pipe (8).
4. The pure oxygen recycling ozone sewage treatment plant according to claim 1, characterized in that: the upper end of the gas transit tank (4) is provided with a dehydrator (41).
5. The pure oxygen recycling ozone sewage treatment plant according to claim 1, characterized in that: the bottom of the gas transit tank (4) is provided with a soda solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920383878.6U CN209957454U (en) | 2019-03-25 | 2019-03-25 | Pure oxygen circulation system ozone sewage treatment device |
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| CN201920383878.6U CN209957454U (en) | 2019-03-25 | 2019-03-25 | Pure oxygen circulation system ozone sewage treatment device |
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| CN209957454U true CN209957454U (en) | 2020-01-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748377A (en) * | 2019-03-25 | 2019-05-14 | 贺宝莹 | Pure oxygen recycles ozone treatment sewage method processed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748377A (en) * | 2019-03-25 | 2019-05-14 | 贺宝莹 | Pure oxygen recycles ozone treatment sewage method processed |
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