CN211367247U - Catalytic stripping tower integrating catalytic oxidation of ozone and air stripping - Google Patents
Catalytic stripping tower integrating catalytic oxidation of ozone and air stripping Download PDFInfo
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- CN211367247U CN211367247U CN201922278293.0U CN201922278293U CN211367247U CN 211367247 U CN211367247 U CN 211367247U CN 201922278293 U CN201922278293 U CN 201922278293U CN 211367247 U CN211367247 U CN 211367247U
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Abstract
The utility model relates to the technical field of wastewater treatment, and discloses a catalytic air stripping tower integrating catalytic ozonation and air stripping, which comprises a tower body, wherein the bottom of the tower body is provided with an ozone inlet and a sewage inlet, the top of the tower body is provided with a tail gas outlet, a water layer area and a water vapor area are arranged in the tower body, the part of the tower body, which is positioned in the water vapor area, is provided with a fresh air inlet, and the fresh air inlet is externally connected with an air blower through a vent pipe; the catalytic stripping tower combines ozone catalytic oxidation and stripping means, reduces the difficulty of sewage treatment, prolongs the service life of the catalyst and reduces the energy consumption of stripping.
Description
Technical Field
The utility model relates to a waste water treatment technical field, concretely relates to ozone catalytic oxidation blows with air and takes off integrative catalysis and blows and take off tower.
Background
The industrial wastewater generally has the characteristics of complex components, high organic matter concentration, poor biodegradability, biotoxicity and the like. In recent years, for industrial wastewater, a main stream treatment method mainly adopts a combined process of physicochemical treatment and biochemical treatment, but in the face of increasingly strict environmental requirements, the biochemical treatment method is difficult to achieve the expected treatment effect, and enterprises are faced with upgrading and modification. Therefore, the advanced treatment of the wastewater becomes a main choice for realizing the standard treatment of the industrial wastewater difficult to degrade at present.
The ozone catalytic oxidation method is one of effective methods for advanced treatment of industrial wastewater, and has wide engineering application. The ozone catalytic oxidation technology is to promote ozone to generate hydroxyl radicals in wastewater by utilizing the catalytic action of a catalyst, so that the utilization rate and the oxidation efficiency of ozone are improved. However, the energy consumption for ozone generation is high, and in order to reduce the treatment cost, the ozone utilization rate needs to be improved as much as possible in practical work.
The existing method mainly changes the thickness of an ozone catalytic oxidation filler, and improves the contact time of ozone and sewage, thereby improving the utilization rate of ozone; however, if the thickness of the ozone catalytic oxidation filler is too high, the sewage treatment efficiency is lowered.
Therefore, through long-term research, the applicant combines an ozone catalytic oxidation method and an air stripping method, and develops a catalytic air stripping tower integrating ozone catalytic oxidation and air stripping.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an ozone catalytic oxidation blows with air and takes off integrative catalysis and blows and take off the tower, this catalysis blows and takes off the tower and combines together ozone catalytic oxidation with the means of blowing off, has reduced the sewage treatment degree of difficulty, has prolonged catalyst life, has reduced and has blown off the energy consumption.
In order to achieve the above object, the present invention provides the following technical solutions:
the catalytic air stripping tower comprises a tower body, wherein an ozone inlet and a sewage inlet are formed in the bottom of the tower body, a tail gas outlet is formed in the top of the tower body, a water layer area and a water vapor area are formed in the tower body, a fresh air inlet is formed in the part, located in the water vapor area, of the tower body, and the fresh air inlet is externally connected with an air blower through a vent pipe.
Preferably, the part of the tower body, which is positioned at the water layer area, is also provided with a water outlet, the water outlet is sequentially connected with a filter through a water pipe, and the water outlet of the filter is connected with an external drainage pipeline for externally draining the water reaching the standard.
Preferably, the tower body is also provided with a spraying mechanism on the upper part of the water vapor area, the spraying mechanism is connected with the water outlet of the filter, and the filtered water is conveyed to the spraying mechanism through a water pump.
Preferably, a water vapor contact packing area is arranged below the spraying mechanism.
Preferably, the top of the tower body is also provided with a steam trap, and the steam trap is arranged above the spraying mechanism.
Preferably, a steam trap packing is arranged in the steam trap.
Preferably, an ozone distributor is arranged at the air outlet of the ozone inlet.
Preferably, an ozone catalytic oxidation packing area is arranged above the ozone distributor.
Preferably, the top and the bottom of the tower body are assembled by adopting end sockets.
The ozone catalytic oxidation method is one of effective methods for advanced treatment of industrial wastewater, but the ozone generation energy consumption is high, in order to improve the ozone utilization rate, the ozone catalytic oxidation and the blowing-off means are combined, and the blowing-off method is used for removing dissolved gas and certain volatile substances in water, namely, the gas (common air) is introduced into the water and is fully contacted with each other, so that the dissolved gas and the volatile substances in the water pass through a gas-liquid interface and are transferred to a gas phase, and the purpose of removing pollutants is achieved; thereby removing a part of pollutants in the sewage and reducing the difficulty of removing the pollutants by blowing off the subsequent sewage.
The stripping process can remove dissolved gases that are originally present in the water, as well as dissolved gases formed by chemical conversion. The stripping treatment has the advantages of simple structure, easy operation, high ammonia nitrogen removal efficiency, mature technology, high energy consumption, serious secondary pollution, easy scaling of a stripping tower and the like.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a catalysis blows the higher condition of tower to ozone catalytic oxidation energy consumption, after using ozone catalytic oxidation to handle sewage, lets in new air in the water layer top, blows off the gaseous pollutant or the volatile pollutant on water layer surface and goes out, has reduced the sewage treatment degree of difficulty, has reduced and has blown off the energy consumption.
Simultaneously, the mechanism that sprays that sets up carries out once more reuse with the sewage that sprays off contact oxidation once more of the ozone that overflows in the air to blow off the pollutant in the air with sewage and contact oxidation once more and carry out secondary reuse, improve the ozone utilization ratio, and then reduce the waste water treatment cost, reduced simultaneously and blown off the easy risk that produces secondary pollution of technology.
Whole catalysis air stripping tower sets up ozone catalytic oxidation with air stripping integration, and area is few, and the equipment operation link is few, the automated control of being convenient for, and the operation is safer convenient.
Drawings
FIG. 1 is a schematic structural diagram of a catalytic stripping tower integrating catalytic oxidation of ozone and air stripping.
FIG. 2 is a block diagram of the operation of a catalytic stripping tower integrating catalytic oxidation of ozone and air stripping.
In the drawings: 100-tower body, 101-ozone inlet, 102-sewage inlet, 103-tail gas outlet, 104-fresh air inlet, 105-water outlet, 10-filter, 20-spraying mechanism, 21-water pump, 22-water vapor contact packing area, 30-steam trap, 40-ozone distributor and 41-ozone catalytic oxidation packing area.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, a preferred embodiment of the present invention provides a catalytic stripping tower integrating catalytic oxidation of ozone and air stripping, which includes a tower body 100, wherein in this embodiment, the top and bottom of the tower body 100 are assembled by using end sockets;
the bottom of the tower body 100 is provided with an ozone inlet 101 and a sewage inlet 102, the top of the tower body is provided with a tail gas outlet 103, the ozone inlet 101 is filled with ozone, the sewage inlet 102 is filled with sewage to be treated, the ozone is fully contacted with the sewage, and pollutants in the sewage are subjected to catalytic oxidation decomposition by adopting a heterogeneous ozone catalytic oxidation process;
a water layer region and a water vapor region are arranged in the tower body 100, a reaction region of the sewage and the ozone is the water layer, and unreacted ozone or gas and certain volatile substances dissolved in the sewage are scattered above the tower body 100 to form the water vapor region; further, a fresh air inlet 104 is arranged at a part of the tower body 100 in the water vapor area, and the fresh air inlet 104 is externally connected with a blower through a vent pipe; the air blower lets in new type air above the water layer, blows off gaseous pollutant or volatile pollutant on the surface of the water layer, and reduces the difficulty of sewage treatment.
In this embodiment, the part of the tower body 100 located in the water layer region is further provided with a water outlet 105, the water outlet 105 is sequentially connected with a filter 10 through a water pipe, the water outlet of the filter 10 is connected with an external drainage pipeline, and when the filtered sewage reaches the discharge standard, the water reaching the treatment standard can be directly discharged.
Further, the tower body 100 is further provided with a spraying mechanism 20 at the upper part of the water vapor area, and the spraying mechanism 20 can be a water spraying distributor or a spray head or a shower head; the spraying mechanism 20 is connected with the water outlet of the filter 10, the filtered water is conveyed to the spraying mechanism 20 through a water pump 21, the spraying mechanism 20 returns the sewage which does not reach the standard after filtration to the tower body 100 from the spraying mechanism 20 under the action of the water pump 21, on one hand, ozone which escapes to the air and the sprayed sewage are subjected to contact oxidation again for once recycling, on the other hand, pollutants which are blown off from the sewage to the air are subjected to contact oxidation again for twice recycling, the ozone utilization rate is improved, the wastewater treatment cost is further reduced, and meanwhile, the risk that secondary pollution is easily generated in a blowing-off process is reduced.
In this embodiment, a water vapor contact packing region 22 is disposed below the spraying mechanism 20, and the water vapor contact packing region 22 is to increase the contact area and contact time between the spraying water sprayed from the spraying mechanism 20 and the ozone and the pollutants blown off into the air, so as to further improve the ozone utilization rate and further reduce the wastewater treatment cost.
In this embodiment, a steam trap 30 is further disposed at the top of the tower body 100, the steam trap 30 is disposed above the spraying mechanism 20, a steam trap filler is disposed in the steam trap 30, and the steam trap 30 can separate water from gas in the tail gas, so as to prevent the tail gas from carrying out substandard sewage water vapor; meanwhile, the tail gas is introduced into the ozone destructor from the tail gas outlet 103, so that the residual ozone in the tail gas is destroyed.
In this embodiment, an ozone distributor 40 is disposed at an air outlet of the ozone inlet 101, and the ozone distributor 40 is an existing distributor, which can uniformly disperse ozone in sewage and increase the contact area between ozone and sewage; and an ozone catalytic oxidation filler area 41 is arranged above the ozone distributor 40, and the ozone catalytic oxidation filler area 41 is also used for increasing the contact area and the contact time of ozone and sewage, so that the ozone utilization rate is further improved.
Specifically, the method comprises the following steps: the tower body 100 is made of glass fiber reinforced plastic, the height of the main body of the tower body is 10m, the diameter of the main body of the tower body is 3m, and the tower top and the tower bottom are assembled in a head sealing mode;
during assembly: the inside of the tower is sequentially provided with an ozone distributor 40 (the ozone distributor 40 can be arranged in a seal head at the bottom of the tower), an ozone catalytic oxidation filler (with the height of 3 m), a water vapor contact filler (with the height of 1 m), a spraying mechanism 20 (the spraying mechanism 20 adopts a water spraying distributor), and a steam trap 30 (the steam trap 30 is filled with a steam trap filler with the height of 0.5m and the steam trap 30 is arranged in the seal head at the top of the tower).
When sewage is treated: sewage enters the tower body 100 from a sewage inlet 102 at the bottom of the tower, and after the sewage passes through the ozone catalytic oxidation filler area 41 and reacts with ozone, the sewage is controlled to have a water depth of about 2m on the ozone catalytic oxidation filler (the water depth can be controlled by controlling the total volume of the sewage entering the tower body 100), and the water inlet process is finished;
fresh air (water-air ratio of 7500: 1) enters the tower body 100 from a fresh air inlet 10 in the middle of the tower body 100 through an air blower, and gaseous pollutants or volatile pollutants on the surface of a water layer are blown out;
the sewage in the tower body 100 is filtered by the filter 10, pumped to the spraying mechanism 20 by the water pump 21 and sprayed out, and after the water vapor contacts the filler area 22, the sprayed sewage acts with ozone and pollutants blown off into the air and then falls back into the water layer; the process is repeated until the sewage in the tower body 100 reaches the discharge standard, and the water reaching the standard is discharged out of the system through the water pump 21;
the tail gas after being washed by the spray water is subjected to water-gas separation by a steam trap 30, discharged from the tower top, conveyed by a pipeline into a tail gas ozone destructor for discharge, and is subjected to subsequent treatment procedures after ozone remaining in the tail gas is destroyed.
Thus completing one sewage treatment operation; the sewage enters the tower body 100 again and the operation is carried out intermittently.
Whole catalysis air stripping tower sets up ozone catalytic oxidation with air stripping integration, and area is few, and the equipment operation link is few, the automated control of being convenient for, and the operation is safer convenient.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.
Claims (9)
1. A catalytic air stripping tower integrating ozone catalytic oxidation and air stripping comprises a tower body (100), wherein an ozone inlet (101) and a sewage inlet (102) are arranged at the bottom of the tower body (100), and a tail gas outlet (103) is arranged at the top of the tower body,
the tower body (100) is internally provided with a water layer area and a water vapor area, the part of the tower body (100) positioned in the water vapor area is provided with a fresh air inlet (104), and the fresh air inlet (104) is externally connected with an air blower through a vent pipe.
2. The catalytic air stripping tower integrating catalytic oxidation of ozone and air stripping as claimed in claim 1, wherein the tower body (100) is further provided with a water outlet (105) at the water layer region, the water outlet (105) is sequentially connected with a filter (10) through a water pipe, and the water outlet of the filter (10) is connected with an external discharge pipeline for discharging the water reaching the standard.
3. The catalytic air stripping tower integrating catalytic oxidation of ozone and air stripping as claimed in claim 2, wherein the tower body (100) is further provided with a spraying mechanism (20) at the upper part of the water vapor region, the spraying mechanism (20) is connected with the water outlet of the filter (10), and the filtered water is delivered to the spraying mechanism (20) through a water pump (21).
4. A catalytic stripping tower integrating catalytic oxidation with air stripping according to claim 3, characterized in that a water vapor contact packing area (22) is arranged below the spraying mechanism (20).
5. The catalytic air stripping tower integrating catalytic oxidation of ozone and air stripping as claimed in claim 4, wherein a steam trap (30) is further provided on the top of the tower body (100), and the steam trap (30) is disposed above the spraying mechanism (20).
6. The catalytic air stripping tower integrating catalytic oxidation with ozone and air stripping as claimed in claim 5, characterized in that the steam trap (30) is filled with steam trap packing.
7. A catalytic air stripping tower integrating catalytic oxidation with air stripping according to claim 1, characterized in that an ozone distributor (40) is provided at the outlet of the ozone inlet (101).
8. A catalytic air stripping tower integrating catalytic ozonation with air stripping according to claim 7, wherein a packed zone (41) for catalytic ozonation is arranged above the ozone distributor (40).
9. The catalytic air stripping tower integrating catalytic oxidation of ozone and air stripping as claimed in claim 1, wherein the top and bottom of the tower body (100) are assembled by using end sockets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278293.0U CN211367247U (en) | 2019-12-18 | 2019-12-18 | Catalytic stripping tower integrating catalytic oxidation of ozone and air stripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278293.0U CN211367247U (en) | 2019-12-18 | 2019-12-18 | Catalytic stripping tower integrating catalytic oxidation of ozone and air stripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211367247U true CN211367247U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922278293.0U Active CN211367247U (en) | 2019-12-18 | 2019-12-18 | Catalytic stripping tower integrating catalytic oxidation of ozone and air stripping |
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|---|---|
| CN (1) | CN211367247U (en) |
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