CN111892114B - Water treatment stripping tower and water treatment process - Google Patents
Water treatment stripping tower and water treatment process Download PDFInfo
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- CN111892114B CN111892114B CN202010768434.1A CN202010768434A CN111892114B CN 111892114 B CN111892114 B CN 111892114B CN 202010768434 A CN202010768434 A CN 202010768434A CN 111892114 B CN111892114 B CN 111892114B
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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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention relates to a water treatment stripping tower and a water treatment process. The stripping tower comprises a shell, wherein the upper part of the shell is provided with a water inlet and a gas outlet, and the lower part of the shell is provided with a gas inlet and a water outlet; a water distributor and a distributed filler assembly are arranged in the shell; the water distributor is communicated with the water inlet; the distributed filler assembly is positioned between the air inlet and the water distributor; the cloth type packing component comprises a group of hydrophilic cloth and a bracket, wherein the hydrophilic cloth is arranged on the bracket. The process is implemented by adopting the stripping tower. The invention adopts the hydrophilic cloth as the distributed filler, and can make the flow of air flow and water flow between the fillers and on the fillers more approximate to a plug flow type by utilizing the advantages of various aspects, and the gas-liquid contact and exchange are carried out by countercurrent, so that the concentration of pollutants (such as ammonia nitrogen concentration) in the discharged gas reaches higher concentration, and meanwhile, the removal rate of the pollutants (such as ammonia nitrogen removal rate) of the collected water at the bottom reaches higher level, thereby realizing more ideal air stripping effect.
Description
Technical Field
The invention relates to a water treatment stripping tower and a water treatment process, and belongs to the technical field of water treatment environmental protection.
Background
According to the knowledge of the applicant, in the technical field of water treatment and environmental protection, the stripping method is a technical means which can be used for treating wastewater containing pollutants such as ammonia nitrogen or hydrogen sulfide, and the stripping method can be realized by adopting a stripping tower, such as a spray type stripping tower, a stacked filler type stripping tower and the like. However, the existing stripping towers have disadvantages, for example, (1) for the spray type stripping tower, the energy consumption required for atomizing water is high, and the residence time of high-speed water in the tower after atomization is short, about 0.5-2 seconds; and a large amount of atomized liquid collides with the tower wall to form thick water flow to the tower bottom, so that the gas-liquid exchange effect is poor. Therefore, under the influence of these two factors, the spray type stripping tower has an undesirable effect on stripping the pollutants in the wastewater. (2) For the packed blowing-off tower, the specific surface area of the packed is low, and the utilization rate of the surface area is low; most of the gas-liquid exchange surface is positioned on the windward side, and the gas resistance is very high; the retention time of the water film on the filler is short and is only 3-6 seconds; the bulk of the liquid in the column will flow down the column walls and there will also be severe channeling and short flow between the packing. Due to the influence of the factors, the blowing-off effect of the packing type blowing-off tower on pollutants in the wastewater is not ideal.
The search shows that the utility model patent No. CN201420064530.8, No. CN203699961U discloses a high-efficiency ammonia stripping tower, which comprises a tower body, a spray water tank, a grid, an air inlet, an air outlet and a demisting folded plate, wherein the air inlet is arranged at the lower part of the tower body and is connected with the tower body in a tangential direction, the air outlet is arranged at the top of the tower body, the grid is arranged in a hollow cavity of the tower body, a polyhedral hollow ball filler is arranged in the hollow cavity of the tower body and is borne by the grid, the hollow cavity of the tower body is provided with an expansion area above the polyhedral hollow ball filler, a lower spiral nozzle is arranged above the air inlet, an upper spiral nozzle is arranged above the expansion area, the demisting folded plate is arranged above the upper spiral nozzle, the spray water tank is arranged at the bottom of the tower body and below the air inlet, ammonia-containing wastewater is intermittently injected into the spray water tank from an inlet pipe, wastewater in, and forming a plurality of water films.
The invention patent application with application number CN201910119017.1 and application publication number CN109970131A discloses a wastewater treatment device for a nano chip production line, wherein a pretreatment tower, a main stripping tower and an auxiliary stripping tower are arranged, vibrating pieces are arranged at the bottoms of the main stripping tower and the auxiliary stripping tower, and a vibrating cylinder is utilized to impact a packing piece which vibrates; by utilizing the integral structure of the packing element and the transferability of vibration, the whole packing element vibrates together, and the packing is prevented from being blocked.
The above technical solutions can be classified into the above-mentioned bulk-packed type stripping column, and the problems mentioned above still remain to a greater or lesser extent. There is a need to develop solutions that overcome these problems.
Disclosure of Invention
The main purposes of the invention are: the problem of prior art existence is overcome, provides a water treatment stripping tower, and gas-liquid exchange is effectual, does benefit to the popularization and application of stripping method. Meanwhile, a water treatment process adopting the equipment is also provided.
The technical scheme for solving the technical problems of the invention is as follows:
a water treatment stripping tower comprises a shell, and is characterized in that a water inlet and a water outlet are formed in the upper part of the shell, and a water inlet and a water outlet are formed in the lower part of the shell; a water distributor and a distributed filler assembly are arranged in the shell; the water distributor is communicated with the water inlet; the cloth type packing assembly comprises a group of hydrophilic cloth and a support, wherein the hydrophilic cloth is arranged on the support.
In the structure, hydrophilic cloth is used as the distributed filler, and the uniformity of a water film formed on the surface of the hydrophilic cloth is high, so that the gas-liquid exchange efficiency is improved; the residence time of the water film is longer, so that the gas-liquid exchange time is longer; the surfaces of both sides of the cloth are gas-liquid exchange surfaces, so that the gas-liquid exchange area is greatly expanded; under the support of the bracket, the cloth can guide the gas flow, thereby greatly reducing the gas resistance, needing no large gas flow and basically having no problems of channeling and short flow, and being beneficial to improving the air stripping efficiency; the flows of the air flow and the water flow between the fillers and on the fillers are closer to a plug flow type, the two flows are in gas-liquid contact and exchange through countercurrent, the concentration of pollutants (such as ammonia nitrogen concentration) in the gas discharged under the two flow states can reach higher concentration, and meanwhile, the pollutant removal rate (such as ammonia nitrogen removal rate) of the bottom collected water can reach higher level.
The technical scheme of the invention is further perfected as follows:
preferably, the arrangement angle of the hydrophilic cloth is an included angle formed by the hydrophilic cloth and the vertical direction, and is less than 60 degrees; the thickness of the hydrophilic cloth is 0.01-4 mm; a distance is left between adjacent hydrophilic cloths.
More preferably, the thickness of the hydrophilic cloth is 0.01-0.1mm, or 0.1-1.5mm, or 1.5-4.0 mm; the distance between the adjacent hydrophilic cloths is 3-300 mm; the hanging length of the hydrophilic cloth is 0.3-10 m.
By adopting the preferred scheme, the parameters such as the thickness, the arrangement angle and the like of the hydrophilic cloth can be further optimized, so that the blowing-off effect is favorably improved; the total exchange area can be further enlarged by reducing the distance between the cloth and increasing the number of the cloth blocks, thereby increasing the space utilization rate.
Preferably, the support comprises an upper support and a lower support, one end of the hydrophilic cloth is fixedly connected with the upper support, and the other end of the hydrophilic cloth is fixedly connected with the lower support.
By adopting the preferred scheme, the specific structure of the distributed filler assembly can be further optimized.
Preferably, the hydrophilic cloth is tensioned to be a plane; or the bracket also comprises a group of baffle rods, and the hydrophilic cloth bypasses the corresponding baffle rods and is tensioned to be in a zigzag shape.
By adopting the preferable scheme, the specific arrangement mode of the hydrophilic cloth can be further optimized.
Preferably, the upper bracket is movably connected with the shell and is in transmission connection with the vibration device; or the lower bracket is movably connected with the shell and is in transmission connection with the vibration device.
More preferably, the vibration frequency of the vibration device is 0.01 to 10 Hz; the vibration device comprises a motor, an eccentric vibration head and a connecting piece; an output shaft of the motor is in transmission connection with the eccentric vibrating head; when the upper bracket is in transmission connection with the vibrating device, the eccentric vibrating head is in transmission connection with the upper bracket through the connecting piece; when the lower bracket is in transmission connection with the vibrating device, the eccentric vibrating head is in transmission connection with the lower bracket through the connecting piece.
By adopting the preferable scheme, the gas-liquid exchange on the surface of the hydrophilic cloth can be promoted by the vibrating water film, so that the air stripping effect is further optimized.
Preferably, the water distributor is at least one pipe fitting, the pipe wall of the pipe fitting is provided with a group of water permeable holes, and the pipe wall outside the water permeable holes is covered with sponge.
By adopting the preferable scheme, the uniform water distribution effect can be further optimized.
In addition, the distributed filler assembly is positioned between the air inlet and the water distributor; a demister is arranged in front of the air outlet of the shell; the shell is also provided with an inspection port and an observation port.
The invention also proposes:
a water treatment process, which is characterized in that the water treatment stripping tower is adopted; the water treatment process comprises the following steps:
firstly, adjusting parameters of a water treatment stripping tower to ensure that the difference between the upper thickness and the lower thickness of a water film on the surface of hydrophilic cloth is less than or equal to 2 times, and the retention time of water on the surface of the hydrophilic cloth is 10 seconds to 10 minutes;
secondly, blowing gas into the shell from the gas inlet by using a fan, wherein the gas flows from bottom to top, flows through the distributed filler assembly and is finally discharged out of the shell through the gas outlet; meanwhile, pumping the water body to be treated into the shell from the water inlet by a water pump, wherein the water body flows from top to bottom, flows through the distributed filler assembly by the water distributor for gas-liquid exchange treatment, and is finally discharged out of the shell through the water outlet;
and thirdly, judging whether parameters need to be adjusted, if so, turning to the first step, otherwise, continuously judging whether the processing is continued, if so, turning to the second step, and if not, finishing the process.
Preferably, in the first step, the parameters of the water treatment stripping tower comprise: the arrangement angle of the hydrophilic cloth, the thickness and the hanging length of the hydrophilic cloth, the distance between adjacent hydrophilic cloths, the vibration frequency of a vibration device when the vibration device is arranged, the gas flow rate and the water treatment capacity; wherein the gas flow rate is 0.1-15m/s, and the water treatment capacity is 0.2-50 tons/square meter per hour (note: square meter refers to the cross-sectional area of the shell).
The water treatment process can be applied to various scenes needing gas-liquid exchange, such as the blow-off treatment of ammonia nitrogen wastewater, the blow-off treatment of hydrogen sulfide wastewater, the blow-off drying treatment of salt-containing water and the like. Note: some application scenarios (such as the blow-off drying treatment of salt-containing water) may require a substantial reduction in water treatment capacity, which can be adjusted according to actual conditions.
Compared with the prior art, the invention adopts the hydrophilic cloth as the distributed filler, utilizes the advantages of high uniformity of the water film formed on the surface, longer retention time of the water film, large gas-liquid exchange area, capability of reducing gas resistance, no need of large gas amount, basically no problem of channeling and short flow and the like, can enable the flow of gas flow and water flow between the fillers and on the fillers to be closer to a plug flow type, and carries out gas-liquid contact and exchange through countercurrent, thereby enabling the concentration of pollutants (such as ammonia nitrogen concentration) in the discharged gas to reach higher concentration, and simultaneously enabling the pollutant removal rate (such as ammonia nitrogen removal rate) of bottom collected water to reach higher level, thereby realizing more ideal air stripping effect.
Drawings
FIG. 1 is a schematic diagram of a water treatment stripping column in accordance with an embodiment of the present invention.
Detailed Description
The water treatment stripping tower embodied by the invention is shown in figure 1 and comprises a shell 9, wherein the upper part of the shell 9 is provided with a water inlet 12 and a gas outlet 8, and the lower part of the shell 9 is provided with a gas inlet 6 and a water outlet 13; a water distributor 1 and a distributed filler assembly are arranged in the shell 9; the water distributor 1 is communicated with the water inlet 12; the cloth type packing component comprises a group of hydrophilic cloth 3 and a bracket, wherein the hydrophilic cloth 3 is arranged on the bracket.
Specifically, the arrangement angle of the hydrophilic cloth 3 is an included angle formed by the hydrophilic cloth 3 and the vertical direction, and is less than 60 degrees; the thickness of the hydrophilic cloth 3 is 0.01-4 mm; a distance is left between adjacent hydrophilic cloths 3. For example, the thickness of the hydrophilic cloth 3 is 0.01 to 0.1mm, or 0.1 to 1.5mm, or 1.5 to 4.0 mm; the distance between the adjacent hydrophilic cloths 3 is 3-300 mm; the hanging length of the hydrophilic cloth 3 is 0.3-10 m.
Specifically, the support includes upper bracket 2 and lower carriage 5, and hydrophilic cloth 3's one end links firmly with upper bracket 2 and its other end links firmly with lower carriage 5. The hydrophilic cloth 3 is tensioned to be a plane; alternatively, the frame further comprises a set of barrier bars (not shown), and the hydrophilic cloth 3 is wound around the corresponding plurality of barrier bars and tensioned in a zigzag shape.
Specifically, the upper bracket 2 is movably connected with the shell 9, and the upper bracket 2 is in transmission connection with the vibrating device 4; or the lower bracket 5 is movably connected with the shell 9, and the lower bracket 5 is in transmission connection with the vibrating device 4. The vibration frequency of the vibration device 4 is 0.01 to 10 Hz. As an example, the vibration device 4 includes a motor, an eccentric vibration head, a connecting member; the output shaft of the motor is in transmission connection with the eccentric vibrating head; when the upper bracket 2 is in transmission connection with the vibrating device 4, the eccentric vibrating head is in transmission connection with the upper bracket 2 through the connecting piece; when the lower bracket 5 is in transmission connection with the vibrating device 4, the eccentric vibrating head is in transmission connection with the lower bracket 5 through the connecting piece.
The water distributor 1 is at least one pipe, the pipe wall of the pipe is provided with a group of water permeable holes, and the pipe wall outside the water permeable holes is covered with sponge.
In addition, the distributed packing component is positioned between the air inlet 6 and the water distributor 1; a demister (not shown) is arranged in front of the air outlet 8 of the shell 9; the housing 9 is also provided with an inspection opening and an observation opening 10.
The water treatment process specifically implemented by the invention adopts the water treatment stripping tower; the water treatment process comprises the following steps:
firstly, adjusting parameters of a water treatment stripping tower to ensure that the difference between the upper thickness and the lower thickness of a water film on the surface of the hydrophilic cloth 3 is less than or equal to 2 times, and ensuring that the retention time of water on the surface of the hydrophilic cloth 3 is 10 seconds to 10 minutes.
Wherein, the parameters of the water treatment stripping tower comprise: the arrangement angle of the hydrophilic cloth 3, the thickness and the hanging length of the hydrophilic cloth 3, the number of the hydrophilic cloth 3, the distance between adjacent hydrophilic cloths 3, the vibration frequency of the vibration device 4 when the vibration device 4 is arranged, the gas flow rate and the water treatment capacity; wherein the gas flow rate is 0.1-15m/s, and the water treatment capacity is 0.2-50 tons/square meter per hour (note: square meter refers to the cross-sectional area of the shell).
Secondly, blowing gas into the shell 9 from the gas inlet 6 by using a fan 7, wherein the gas flows from bottom to top, flows through the distributed packing assembly and is finally discharged out of the shell 9 through the gas outlet 8; meanwhile, a water body to be treated is pumped into the shell 9 from the water inlet 12 by the water pump 11, flows from top to bottom, passes through the distributed packing assembly through the water distributor 1 for gas-liquid exchange treatment, and is finally discharged out of the shell 9 through the water outlet 13.
And thirdly, judging whether parameters need to be adjusted, if so, turning to the first step, otherwise, continuously judging whether the processing is continued, if so, turning to the second step, and if not, finishing the process.
The present invention will be described in further detail with reference to examples. The invention is not limited to the examples given.
Example 1
In the water treatment stripping tower of the embodiment, the arrangement angle of the hydrophilic cloth 3 is 0 degree; the thickness of the hydrophilic cloth 3 is 0.80 mm; the distance between the adjacent hydrophilic cloths 3 is 8.0 mm; the hanging length of the hydrophilic cloth 3 is 2.5 m; the number of the hydrophilic cloths 3 was 50.
The lower bracket 5 is movably connected with the shell 9; the vibration frequency of the vibration device 4 is 1 Hz; the eccentric vibrating head of the vibrating device 4 is in transmission connection with the lower bracket 5 through a connecting piece.
Further, the size of the housing 9: length × width × height is 0.4 × 3.0 m. The width of the hydrophilic cloth 3 was 0.4 m. The hydrophilic cloth 3 is a PP non-woven fabric. The motor power of the vibration device 4 is 25 w.
Specific structural examples of the upper bracket 2 and the lower bracket 5 are as follows: fixing the upper end or the lower end of the hydrophilic cloth 3 by adopting a stainless steel wire with the diameter of 3mm, and fixing the stainless steel wire on No. 3 angle steel; in the upper bracket 2, the angle steel is fixedly connected with the shell 9; in the lower bracket 5, the angle steel is movably connected with the shell 9, the movable connection can adopt a sliding groove and sliding block matching structure, if a sliding block is arranged on the shell 9 and a sliding groove is arranged on the angle steel, the sliding groove and the sliding block are matched with each other, so that the angle steel can be supported on the shell 9 and can realize vibration through sliding.
The parameters of the adopted fan are as follows: air flow 690m3H, power 0.37Kw, pressure 1500 Pa. The parameters of the water pump are as follows: the flow is 0.5 ton/h, the lift is 5.0 m, and the power is 30W.
Structural example of water distributor 1: four stainless steel pipes with the length of 396mm and the inner diameter of 10mm are adopted for manufacturing, the hole diameter is 3.0mm, holes with the interval of 80mm are formed, the distance between the pipes is 80mm, each pipe has 5 holes, and the outer wall of each pipe is wrapped by fine sponge to play a role in uniformly distributing water.
The water treatment process of the embodiment is an ammonia nitrogen wastewater treatment process, and the water treatment stripping tower is adopted. Wherein the gas flow rate is 1.2m/s, and the water treatment capacity is 0.2-50 tons/square meter per hour (note: square meter refers to the cross-sectional area of the shell).
In addition, combine this water treatment stripping tower with ammonia nitrogen absorption tower, specific example is:
the air outlet 8 of the water treatment stripping tower is communicated with the air inlet 6 of the ammonia nitrogen absorption tower through a fan, so that the ammonia nitrogen-containing gas is absorbed; and (3) communicating the gas outlet 8 of the ammonia nitrogen absorption tower with the gas inlet 6 of the water treatment stripping tower through a fan, so that the gas after absorption treatment is recycled.
The treatment effect is as follows: the water body to be treated is ammonia nitrogen wastewater, the ammonia nitrogen concentration is 1823mg/L, and the pH value is 12. After treatment, the ammonia nitrogen concentration is 212mg/L and the pH value is 12 when the wastewater is discharged out of the shell 9. The treatment effect is ideal.
The water treatment stripping tower of the invention has the following advantages as represented by the above embodiments:
1. comparison with spray type stripping column:
for a spray type air stripping tower, the energy consumption required for atomizing water is very high, and the retention time of high-speed water flow in the tower after atomization is very short, namely about 0.5-2 seconds; and a large amount of atomized liquid collides with the tower wall to form thick water flow to the tower bottom, so that the gas-liquid exchange effect is poor. Therefore, under the influence of these two factors, the spray type stripping tower has an undesirable effect on stripping the pollutants in the wastewater.
The water treatment stripping tower has high gas-liquid exchange efficiency and ideal stripping effect.
2. Comparison with a packed stripping column
1) Thickness and uniformity of water film
The packing-piled type stripping tower cannot form a uniform water film, and the difference of the thickness of the water film formed on the packing-piled type stripping tower can reach dozens of times.
The water treatment stripping tower adopts the hydrophilic cloth 3 as the distributed filler, the water film formed on the surface of the water treatment stripping tower has high uniformity, and the thickness difference from top to bottom can be controlled within 2 times, so that the gas-liquid exchange efficiency is improved.
2) Area of gas-liquid exchange
The specific surface area of the stacking type filler is low, and the utilization rate of the surface area is not high.
In the water treatment stripping tower, the surfaces of both sides of the cloth are gas-liquid exchange surfaces, so that the gas-liquid exchange area is greatly expanded.
3) Air resistance
The gas resistance of the accumulated filler is very large because most of the gas-liquid exchange surface is positioned on the windward side.
In the water treatment stripping tower, the cloth can be guided by the air flow under the support of the bracket, so that the air flow moves along the cloth, thereby greatly reducing the air resistance and greatly saving the power consumption of the fan.
4) Gas flow, channeling and short flow
Bulk packed columns have large amounts of liquid flowing down the column walls and severe channeling and short flow between the packing. Therefore, the accumulation type packing needs to overcome channeling and short flow by increasing air flow, and promotes vibration of a water film by using large air flow to promote gas-liquid exchange, so that the required ascending flow rate is high, the air flow is large, and the power consumption of the fan is large; but at the same time the concentration in the exchanged gas is also lower.
In the water treatment stripping tower, large air flow is not needed, the problems of channeling and short flow are basically avoided, and the stripping efficiency is improved.
5) Time of gas-liquid exchange
The retention time of a water film of the packed blowing-off tower on the packing is only 3-6 seconds.
In the water treatment stripping tower, the retention time of the water film on the cloth can be adjusted to 10 seconds to 10 minutes by adjusting the parameters of the water treatment stripping tower, the retention time of the water on the cloth is the gas-liquid exchange time, and the longer the exchange time is, the better the gas-liquid exchange effect is.
6) Liquid holdup participating in efficient gas-liquid exchange
In the water treatment stripping tower, if the thickness of a water film formed on the surface of the hydrophilic cloth 3 is calculated by 1.5mm and the distance between the cloths is calculated by 6mm, the liquid holdup of 1 cubic filler can reach 25 percent, and the difference is obvious when the packed type stripping tower is less than 6 percent.
7) Flow state of gas and water
The airflow and the water flow in the stacking filler type stripping tower are both close to a mixed type, so that the pollutant concentration (such as ammonia nitrogen concentration) of the final gas is not high, and the pollutant removal rate (such as ammonia nitrogen removal rate) of the water subjected to stripping treatment is not high.
In the water treatment stripping tower, the flows of the air flow and the water flow between the fillers and on the fillers are closer to a plug flow type, the two flows are subjected to gas-liquid contact and exchange through countercurrent, the concentration of pollutants (such as ammonia nitrogen concentration) in the gas discharged under the two flow states can reach higher concentration, and the removal rate of the pollutants (such as ammonia nitrogen removal rate) of the bottom collected water can reach higher level.
8) Space utilization rate
In the packing type stripping tower, the packing volume of the packing of the determined specification is fixed, the gas-liquid exchange area is also fixed, and the space utilization rate is fixed.
In the water treatment stripping tower, the distance between the cloth materials can be reduced, and the number of the cloth materials can be increased, so that the total exchange area is enlarged, and the space utilization rate is correspondingly increased.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. A water treatment stripping tower comprises a shell, and is characterized in that a water inlet and a water outlet are formed in the upper part of the shell, and a water inlet and a water outlet are formed in the lower part of the shell; a water distributor and a distributed filler assembly are arranged in the shell; the water distributor is communicated with the water inlet; the cloth type packing assembly comprises a group of hydrophilic cloth and a bracket, wherein the hydrophilic cloth is arranged on the bracket; the arrangement angle of the hydrophilic cloth is an included angle formed by the hydrophilic cloth and the vertical direction and is less than 60 degrees; a distance is reserved between the adjacent hydrophilic cloths; the thickness of the hydrophilic cloth is 0.01-4 mm; the distance between the adjacent hydrophilic cloths is 3-300 mm; the hanging length of the hydrophilic cloth is 0.3-10 m; the support comprises an upper support and a lower support, one end of the hydrophilic cloth is fixedly connected with the upper support, and the other end of the hydrophilic cloth is fixedly connected with the lower support; the hydrophilic cloth is tensioned to form a plane.
2. A water treatment stripping tower comprises a shell, and is characterized in that a water inlet and a water outlet are formed in the upper part of the shell, and a water inlet and a water outlet are formed in the lower part of the shell; a water distributor and a distributed filler assembly are arranged in the shell; the water distributor is communicated with the water inlet; the cloth type packing assembly comprises a group of hydrophilic cloth and a bracket, wherein the hydrophilic cloth is arranged on the bracket; the arrangement angle of the hydrophilic cloth is an included angle formed by the hydrophilic cloth and the vertical direction and is less than 60 degrees; a distance is reserved between the adjacent hydrophilic cloths; the thickness of the hydrophilic cloth is 0.01-4 mm; the distance between the adjacent hydrophilic cloths is 3-300 mm; the hanging length of the hydrophilic cloth is 0.3-10 m; the support comprises an upper support and a lower support, one end of the hydrophilic cloth is fixedly connected with the upper support, and the other end of the hydrophilic cloth is fixedly connected with the lower support; the support also comprises a group of baffle rods, and the hydrophilic cloth bypasses the corresponding baffle rods and is tensioned to be in a zigzag shape.
3. The water treatment stripping tower according to claim 1 or 2, wherein the upper bracket is movably connected with the shell and is in transmission connection with the vibration device; or the lower bracket is movably connected with the shell and is in transmission connection with the vibration device.
4. The water treatment stripping tower as claimed in claim 3, wherein the vibration frequency of the vibration device is 0.01-10 Hz; the vibration device comprises a motor, an eccentric vibration head and a connecting piece; an output shaft of the motor is in transmission connection with the eccentric vibrating head; when the upper bracket is in transmission connection with the vibrating device, the eccentric vibrating head is in transmission connection with the upper bracket through the connecting piece; when the lower bracket is in transmission connection with the vibrating device, the eccentric vibrating head is in transmission connection with the lower bracket through the connecting piece.
5. The water treatment stripping tower according to claim 1 or 2, wherein the water distributor is at least one pipe, the pipe wall of the pipe is provided with a group of water permeable holes, and the pipe wall outside the water permeable holes is covered with sponge; the distributed filler assembly is positioned between the air inlet and the water distributor; a demister is arranged in front of the air outlet of the shell; the shell is also provided with an inspection port and an observation port.
6. A water treatment process, which is characterized in that the water treatment stripping tower of any one of claims 1 to 5 is adopted; the water treatment process comprises the following steps:
firstly, adjusting parameters of a water treatment stripping tower to ensure that the difference between the upper thickness and the lower thickness of a water film on the surface of hydrophilic cloth is less than or equal to 2 times, and the retention time of water on the surface of the hydrophilic cloth is 10 seconds to 10 minutes;
secondly, blowing gas into the shell from the gas inlet by using a fan, wherein the gas flows from bottom to top, flows through the distributed filler assembly and is finally discharged out of the shell through the gas outlet; meanwhile, pumping the water body to be treated into the shell from the water inlet by a water pump, wherein the water body flows from top to bottom, flows through the distributed filler assembly by the water distributor for gas-liquid exchange treatment, and is finally discharged out of the shell through the water outlet;
and thirdly, judging whether parameters need to be adjusted, if so, turning to the first step, otherwise, continuously judging whether the processing is continued, if so, turning to the second step, and if not, finishing the process.
7. The water treatment process as claimed in claim 6, wherein in the first step, the parameters of the water treatment stripping tower comprise: the arrangement angle of the hydrophilic cloth, the thickness and the hanging length of the hydrophilic cloth, the distance between adjacent hydrophilic cloths, the vibration frequency of a vibration device when the vibration device is arranged, the gas flow rate and the water treatment capacity; wherein the gas flow rate is 0.1-15m/s, and the water body treatment capacity is 0.2-50 tons/square meter per hour.
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| ES2956933A1 (en) * | 2023-01-31 | 2024-01-04 | Tkin Orma S L | ABSORPTION TOWER AND PROCESS TO RECOVER NITROGENATED NUTRIENTS FROM WASTE FROM AGRIBUSINESS (Machine-translation by Google Translate, not legally binding) |
| CN116395776A (en) * | 2023-05-15 | 2023-07-07 | 江苏新化化工有限公司 | Energy-saving device for preparing oxygen-free pure water by utilizing waste heat |
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| CN2721612Y (en) * | 2004-09-08 | 2005-08-31 | 江苏江大环境工程有限责任公司 | Ammonia blowing-out tower |
| DE102005004361B4 (en) * | 2005-01-31 | 2006-12-07 | Advanced Micro Devices, Inc., Sunnyvale | Apparatus and method for removing bubbles from a process fluid |
| CN104307459A (en) * | 2014-10-02 | 2015-01-28 | 北京玉珠峰科技有限公司 | Novel fluid-air exchange filler |
| CN109970131B (en) * | 2019-02-18 | 2021-09-14 | 英鸿纳米科技股份有限公司 | A effluent treatment plant for nanometer chip production line |
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2020
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