CN210544324U - Circulating water backflow purification mechanism of VOCs (volatile organic compounds) waste gas treatment tower and treatment tower thereof - Google Patents
Circulating water backflow purification mechanism of VOCs (volatile organic compounds) waste gas treatment tower and treatment tower thereof Download PDFInfo
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- CN210544324U CN210544324U CN201921084451.2U CN201921084451U CN210544324U CN 210544324 U CN210544324 U CN 210544324U CN 201921084451 U CN201921084451 U CN 201921084451U CN 210544324 U CN210544324 U CN 210544324U
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Abstract
The utility model provides a circulating water backward flow purification mechanism of VOCs exhaust-gas treatment tower and treatment tower thereof, through increase circulating water backward flow purification mechanism in VOCs exhaust-gas treatment tower, including waste gas retrieval and utilization intake pipe, waste gas retrieval and utilization blast pipe, waste gas retrieval and utilization fan and at least a set of micro-nano bubble generator, the part waste gas retrieval and utilization that VOCs waste gas micro-nano bubble treatment tower will discharge, react once more with the circulating water through micro-nano bubble generator, purify the circulating water, get rid of the VOCs (the COD of aquatic promptly) of dissolving in the circulating water, the live time of circulating water has been prolonged, increase the use number of times of circulating water, reduce the emission of waste water. More importantly, the COD in the circulating water is greatly reduced, and the waste gas purification rate of the VOCs waste gas micro-nano bubble treatment tower is greatly improved.
Description
Technical Field
The utility model relates to a circulating water backward flow purification mechanism of VOCs exhaust-gas treatment tower and treatment tower thereof.
Background
The Volatile Organic Compounds (VOCs) with certain concentration is generated in the industrial and agricultural production process, so that the waste gas pollution source is actively treated for protecting the personal safety and health of enterprise staff, improving the self environmental protection consciousness and capability and responding the requirements of relevant environmental protection departments.
The treatment process for VOCs gas is commonly used at home and abroad and comprises an activated carbon adsorption method, a chemical reaction method, a catalytic combustion method, a biological oxidation method, a medium excitation technology, a technical micro-nano bubble technology and the like. The micro-nano bubble technology has the advantages of no secondary pollution, low resource consumption, stable and reliable facility operation, simple and convenient maintenance, low operation cost, small occupied area and the like. The nano-scale bubbles are used in the micro-nano bubble technology, gradually become smaller in water, the pressure inside the accompanying bubbles is continuously increased, instantaneous high pressure can be generated after the bubbles are burst, huge energy is released, organic matter molecular chain structures in organic waste gas and organic waste water can be effectively decomposed, and the high-efficiency treatment of VOCs in the organic waste gas/waste water is realized.
Corresponding micro-nano bubble treatment facility, the VOCs exhaust treatment device that generally adopts include VOCs exhaust treatment tower, and generally have one-level or multistage, for example the chinese utility model patent that patent application number is 201821330218.3, a VOCs exhaust treatment device provides a VOCs exhaust treatment tower with two-stage processing system. Each stage can produce micro-nano bubbles, and the waste gas after being treated by the primary waste gas treatment tower enters the secondary waste gas treatment tower to be treated again, so that the content of VOCs in the waste gas is further reduced. The multi-stage VOCs waste gas treatment tower is used for treating waste gas for multiple times, so that the removal rate is improved, and the content of VOCs in discharged gas is lower.
If the waste gas amount increases, the number of the micro-nano bubble waste gas treatment towers can be increased, and multiple towers can be used in a combined mode. Therefore, the micro-nano bubble waste gas treatment process can flexibly deal with waste gas treatment with different air volumes and different concentrations.
In the existing waste gas treatment tower, in the process of treating waste gas once, water (hereinafter referred to as circulating water) recycled in the waste gas treatment tower is polluted, VOCs in the waste gas are continuously dissolved in the circulating water, COD (chemical oxygen demand) contained in the circulating water is continuously increased until the circulating water is saturated, and at the moment, the purifying effect of the circulating water in the waste gas treatment tower on the VOCs in the waste gas is greatly reduced, so that the waste gas cannot be discharged up to the standard; the waste gas treatment tower can continue to work only by discharging circulating water and replacing fresh water. Because COD in the circulating water changes, the VOCs discharge concentration of VOCs exhaust-gas treatment tower also changes, leads to VOCs exhaust-gas treatment tower treatment effect unstable, can not discharge up to standard even.
If can add the purification mechanism of circulating water in exhaust-gas treatment tower, just can be with the COD concentration control of circulating water at certain within range to guarantee that VOCs exhaust-gas treatment tower treatment effect is stable up to standard, and let the life extension of circulating water, can reduce the use amount of water, reduce the discharge capacity of circulating waste water, accord with energy saving and emission reduction more, green, this is the place that current exhaust-gas treatment tower needs the improvement. In fact, the micro-nano bubble treatment equipment can be used for treating VOCs in waste gas and COD in circulating water; a little nanometer bubble treatment tower of waste water is called to little nanometer bubble treatment tower for handling COD in the circulating water, and the purpose of little nanometer bubble treatment tower of waste water reduces the COD in the circulating water, and with the same reason of exhaust-gas treatment tower, little nanometer bubble treatment tower of waste water can set up a set of or multiunit little nanometer bubble generator equally, forms one-level or multistage waste water treatment tower, can design according to concrete operating mode.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned technical problem, provide a circulating water backward flow purification mechanism of VOCs exhaust-gas treatment tower and VOCs exhaust-gas treatment tower thereof to make the COD control of the circulating water in the VOCs exhaust-gas treatment tower at certain within range, thereby make the waste gas of VOCs exhaust-gas treatment tower emission stabilize up to standard.
Wherein, a circulating water backward flow purification mechanism of VOCs exhaust-gas treatment tower sets up in original exhaust-gas treatment tower, including waste gas retrieval and utilization intake pipe, waste gas retrieval and utilization blast pipe, waste gas retrieval and utilization fan, circulating water backwash pump and at least a set of micro-nano bubble generator or circulating water clarification plant.
One end of the waste gas recycling air inlet pipe is connected with a discharge pipe of the waste gas treatment tower, and the other end of the waste gas recycling air inlet pipe is connected with a circulating water purification mechanism water tank of the waste gas treatment tower;
one end of the waste gas recycling exhaust pipe is connected with the top of the water tank, the other end of the waste gas recycling exhaust pipe is connected with the exhaust pipe of the waste gas treatment tower, and the waste gas recycling exhaust pipe is arranged above the waste gas recycling inlet pipe and keeps a proper distance;
the waste gas recycling fan is arranged in the waste gas recycling air inlet pipe or/and the waste gas recycling exhaust pipe and is used for pumping waste gas of the exhaust pipe of the waste gas treatment tower into the water tank;
the micro-nano bubble generator is installed in the water tank and positioned above the gas outlet of the waste gas recycling gas inlet pipe.
When circulating water in the waste gas treatment tower is polluted and COD that contains arrives a quantitative time, start backward flow purification mechanism, gas recycle who will purify the back combustion gas gets up, and the suction is in the water tank, and the micro-nano bubble that produces with micro-nano bubble generator in the water tank takes place the reaction, further gets rid of the COD that contains in the waste water in the water tank to the use number of times of extension waste water reduces waste water discharge capacity.
Furthermore, the micro-nano bubble generator or the circulating water purification equipment in the water tank is provided with one or more than one stage.
Furthermore, the exhaust gas recycling fans are at least two, and the exhaust gas recycling air inlet pipe and the exhaust gas recycling exhaust pipe are both installed, so that better exhaust gas utilization is guaranteed.
8. Furthermore, the circulating water backflow purification mechanism at least comprises 2 sets or more, and can be used in combination of a plurality of sets.
A VOCs waste gas treatment tower comprises the circulating water backflow purification mechanism of the VOCs waste gas treatment tower.
Further, the VOCs waste gas treatment tower comprises at least one stage of waste gas treatment system, and can be used in a multi-tower combined mode.
It is right by the aforesaid the utility model discloses a description can know, compares with prior art, the utility model discloses utilize one set of waste water micro-nano bubble treatment tower to purify the circulating water of another set of waste gas micro-nano bubble treatment tower to improve the waste gas purification rate of waste gas micro-nano bubble treatment tower. The waste gas that the micro-nano bubble of waste water treating column required gas utilizes the micro-nano bubble of waste gas treating column to discharge can get rid of the COD of circulating water, also can further improve the waste gas purification rate of retrieval and utilization.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.
Wherein:
FIG. 1 is a schematic view of a circulating water reflux purification mechanism of a VOCs waste gas treatment tower and a treatment tower thereof;
the reference numerals of fig. 1 denote: 10-a waste gas recycling air inlet pipe, 20-a waste gas recycling exhaust pipe, 30-a waste gas recycling fan, 40-a micro-nano bubble generator, 50-a waste gas micro-nano bubble treatment tower, 41-a waste water micro-nano bubble treatment device, 51-a waste gas micro-nano bubble treatment tower discharge pipe, 52-a water tank, 53-a filtering mechanism and 54-a high-pressure pump.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The first embodiment is as follows:
referring to fig. 1, wherein 50 is a waste gas micro-nano bubble treatment tower, 41 is a waste water micro-nano bubble treatment tower, a circulating water reflux purification mechanism of a VOCs waste gas treatment tower includes a waste gas recycling inlet pipe 10, a waste gas recycling outlet pipe 20, a waste gas recycling fan 30, a circulating water reflux pump and a micro-nano bubble generator 40. The micro-nano bubble generator 40 can be set to 1 group, 2 groups or N groups, and is corresponding to a primary, secondary or N-level wastewater treatment system. 1 group, 2 groups or N groups of micro-nano bubble generators can be arranged in the waste gas micro-nano bubble processing tower 50 to form a primary secondary or N-level waste gas processing system, and multiple towers can be used together.
One end of the waste gas recycling inlet pipe 10 is connected with a discharge pipe 51 of a waste gas treatment tower, and the other end is connected with a water tank 52 of the waste gas treatment tower;
one end of the exhaust gas recycling exhaust pipe 20 is connected with the top of the water tank 52, the other end is connected with the exhaust pipe 51 of the exhaust gas treatment tower, and the exhaust gas recycling exhaust pipe is arranged above the exhaust gas recycling inlet pipe 10, and a proper distance is kept between the exhaust gas recycling inlet pipe and the exhaust gas recycling inlet pipe, so that mutual influence of air inlet and exhaust functions is avoided.
Two exhaust gas recycling fans 30 are respectively arranged in the exhaust gas recycling inlet pipe 10 and the exhaust gas recycling exhaust pipe 20, and exhaust gas of the exhaust pipe 51 of the exhaust gas treatment tower is pumped into the water tank 52;
the micro-nano bubble generator 40 is installed in the water tank 52 and is positioned above the air outlet of the waste gas recycling air inlet pipe 10.
When the circulating water in the waste gas treatment tower is polluted and VOCs (volatile organic compounds) contained in the circulating water reach a certain amount, the backflow purification mechanism is started, the purified exhaust gas is recycled and pumped into the water tank 52 to react with the micro-nano bubbles generated by the micro-nano bubble generator 40 in the water tank 52, and the VOCs contained in the waste water in the water tank 52 are further removed, so that the use times of the waste water are prolonged, and the discharge capacity of the waste water is reduced.
Example two:
a VOCs waste gas treatment tower comprises the circulating water backflow purification mechanism of the VOCs waste gas treatment tower, and further comprises a filtering mechanism 53 and a high-pressure pump 54, wherein a check valve is arranged between the filtering mechanism 53 and a water tank 52, and water backflow from the water tank 52 is prevented.
By the aforesaid to the utility model discloses a to the description of the utility model, compare with prior art, the utility model discloses a backward flow purification mechanism and VOCs exhaust-gas treatment tower of VOCs exhaust-gas treatment tower, through increase backward flow purification mechanism in VOCs exhaust-gas treatment tower, the waste gas after will being purified is inhaled again and is reacted once more with waste water, become and purify waste water, get rid of the VOCs who dissolves in waste water, the live time of waste water has been prolonged, increase the use number of times of waste water, reduce the discharge of waste water, accord with green, and simultaneously, what further react with waste water is the waste gas of being handled, promptly in purifying waste water, the pollution that the minimize led to the fact the air. From the essence, the utility model discloses a it is the circulating water that utilizes one set of waste water micro-nano bubble treatment tower to purify another set of waste gas micro-nano bubble treatment tower to improve the waste gas purification rate of waste gas micro-nano bubble treatment tower. The gas required by the waste water micro-nano bubble treatment tower is waste gas discharged by the waste gas micro-nano bubble treatment tower, so that COD (chemical oxygen demand) in the circulating water can be removed, and the recycled waste gas purification rate can be further improved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (7)
1. A circulating water reflux purification mechanism of a VOCs waste gas treatment tower is arranged in the VOCs waste gas treatment tower and is characterized by comprising a waste gas recycling air inlet pipe, a waste gas recycling exhaust pipe, a waste gas recycling fan, a circulating water reflux pump and at least one group of micro-nano bubble generators or circulating water purification equipment; one end of the waste gas recycling air inlet pipe is connected with a discharge pipe of the waste gas treatment tower, and the other end of the waste gas recycling air inlet pipe is connected with a circulating water purification mechanism water tank of the waste gas treatment tower; one end of the waste gas recycling exhaust pipe is connected with the top of the water tank, and the other end of the waste gas recycling exhaust pipe is connected with the exhaust pipe of the waste gas treatment tower; the waste gas recycling fan is arranged in the waste gas recycling air inlet pipe and used for pumping waste gas of a discharge pipe of the waste gas treatment tower into the water tank; micro-nano bubble generator or circulating water purification equipment install in the water tank, be located the gas outlet top of waste gas retrieval and utilization intake pipe.
2. The circulating water reflux purification mechanism of a VOCs waste gas treatment tower of claim 1, wherein the micro-nano bubble generator or circulating water purification equipment in the water tank has one or more stages.
3. The circulating water reflux purification mechanism of a VOCs waste gas treatment tower as claimed in claim 1, wherein one end of said waste gas recycling inlet pipe is disposed above the water level in the water tank of said purification mechanism.
4. The circulating water reflux purification mechanism for VOCs waste gas treatment tower of claim 1, wherein at least one waste gas recycling fan is installed in the waste gas recycling inlet pipe or the waste gas recycling exhaust pipe.
5. The circulating water reflux purification mechanism for VOCs waste gas treatment tower of claim 1, wherein the circulating water reflux purification mechanism comprises at least 2 sets and more than 2 sets, and can be used in combination.
6. A VOCs waste gas treatment tower, characterized in that, comprises a circulating water reflux purification mechanism of VOCs waste gas treatment tower of any claim 1 to 4.
7. A VOCs effluent treatment tower in accordance with claim 6 wherein said tower includes at least one stage of effluent treatment system and is multi-tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084451.2U CN210544324U (en) | 2019-07-11 | 2019-07-11 | Circulating water backflow purification mechanism of VOCs (volatile organic compounds) waste gas treatment tower and treatment tower thereof |
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| CN201921084451.2U CN210544324U (en) | 2019-07-11 | 2019-07-11 | Circulating water backflow purification mechanism of VOCs (volatile organic compounds) waste gas treatment tower and treatment tower thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479407A (en) * | 2020-12-03 | 2021-03-12 | 荆门市格林美新材料有限公司 | Device and method for efficiently separating oil in extracted water phase by extracting organic waste gas |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479407A (en) * | 2020-12-03 | 2021-03-12 | 荆门市格林美新材料有限公司 | Device and method for efficiently separating oil in extracted water phase by extracting organic waste gas |
| CN112479407B (en) * | 2020-12-03 | 2024-03-15 | 荆门市格林美新材料有限公司 | Device and method for efficiently separating oil in extracted water phase by using extracted organic waste gas |
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Effective date of registration: 20210915 Address after: 361113 unit a, 1f, building a, No. 702, Caotang Road, Tong'an District, Xiamen City, Fujian Province Patentee after: Xiamen Xingyu Environmental Protection Technology Service Co.,Ltd. Address before: 361000 1102, block a, building 3, Xinda building, No. 13, Xinglong Road, Huli District, Xiamen City, Fujian Province Patentee before: XIAMEN ZHONGOU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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