CN210473399U - Full-wet gas purification washing tower - Google Patents

Abstract

The utility model discloses a full wet-type gas purification scrubbing tower belongs to scrubbing tower technical field. The utility model discloses a water purification device, including tower body, solid, water storage tank, water discharge pipe, setting valve, setting.

Description

Full-wet gas purification washing tower

Technical Field

The utility model relates to a full wet-type gas purification scrubbing tower belongs to scrubbing tower technical field.

Background

The purification and dust removal devices used by the industrial and mining enterprises at present are as follows; electric dust removal, cloth bag dust removal, Venturi dust removal, water film dust removal, mechanical dust removal and the like. But they have limited effectiveness in removing dust and also have certain special requirements and limitations on the gases that pass through. Electric precipitation: the oxygen content of the combustible gas is required to be not over standard, otherwise, explosion is easily caused; bag dust removal: the temperature and the humidity of the passing gas are required to be not over standard, otherwise, the cloth bag is burnt and blocked, and the system resistance is large; venturi type dust removal: the contact area is small, and the dust removal effect is not thorough; water film dedusting: large water consumption and secondary pollution; mechanical dust removal: the dust removal effect is poor and there is fly ash abrasion.

Disclosure of Invention

To solve the above problems, the to-be-solved technical problem of the present invention is to provide a full wet gas purification scrubber.

The utility model discloses a full wet-type gas purification scrubbing tower, it contains the inlet pipe way, the solid discharge door, the solid deposits up the room, two doors are discharged to the solid, the solid discharges one door, lower basin flushing drain pipe, lower basin flushing drain valve, the tower wall, the settlement plate flushing pipe, the settlement plate flushometer, the tympanic bulla flange, the tympanic bulla pipe flushing pipe, the tympanic bulla pipe flushometer, the tympanic bulla pipe, tympanic bulla net flushing pipe, tympanic bulla net, oil-water separator, lower basin high-order overflow pipe, the lower basin, tympanic bulla bed overflow pipe, the tympanic bulla bed, tympanic bulla bed access hole, water film dust removal downcomer, water film dust removal catch basin, water film dust removal access hole, venturi tube, venturi nozzle, venturi tube access hole, venturi tube, turbofan dehydration and wave form tile dehydration drain pipe, the room of wave form tile, the solid discharges the room, the solid, The device comprises a corrugated tile dehydration guide cone, a gas spreading plate, a corrugated tile dehydration access hole, corrugated tile dehydration, an outlet pipeline, a water supply main pipe, a water seal inlet valve, a water seal, a dosing tank, a sedimentation water collecting tank, a water pump, a filter, a suspended matter water seal inlet valve, a suspended matter discharge pipe, a suspended matter ascending pipe valve, a suspended matter pump and a tower body, wherein an inlet pipeline is arranged on one side of the tower body, a water drainage tank is arranged at the bottom of the tower body, a solid storage chamber is arranged at the lower part of the water drainage tank, a solid discharge door is arranged on the solid storage chamber, a solid discharge secondary door and a solid discharge primary door are arranged between the solid storage chamber and the water drainage tank, a water drainage tank flushing drainage pipe is arranged on one side of the water drainage tank, the settling plate is close to the tower wall, a settling plate flushing pipe is arranged above the settling plate, a settling plate flushing valve is arranged on the settling plate flushing pipe, a bubbling pipe flushing pipe is arranged above the settling plate flushing pipe, a bubbling pipe flushing valve is arranged on the bubbling pipe flushing pipe, the inlet pipeline port is connected with the bubbling pipe through a bubbling pipe flange, a bubbling net is arranged above the bubbling pipe flushing pipe, a bubbling net flushing pipe is arranged inside the bubbling net, a bubbling net flushing valve is arranged on the bubbling net flushing pipe, an oil-water separator is arranged on one side above the bubbling net, a lower water tank high-level overflow pipe and a suspended matter discharge pipe are respectively arranged on two sides of the tower body above the bubbling net, a bubbling bed is arranged above the bubbling net, a bubbling bed overflow pipe is arranged in the middle of the bubbling bed, a bubbling bed maintenance port is arranged on the tower body on one side of the bubbling bed, a water film is arranged above the bubbling bed for dust removal, and a water film dedusting guide cone is arranged on the water film dedusting, a water film dedusting downcomer is arranged on the outer side of the water film dedusting, a water film dedusting water collecting tank is arranged above the water film dedusting, a water film dedusting access hole is arranged on the tower body on one side of the water film dedusting, a venturi dedusting pipe is arranged above the water film dedusting water collecting tank, a venturi is arranged in the venturi dedusting pipe, a venturi nozzle is arranged above the venturi nozzle, a venturi dedusting water supply valve is arranged on the venturi nozzle, a venturi dedusting access hole is arranged on the tower body on one side of the venturi dedusting pipe, a turbofan dehydration is arranged above the venturi nozzle, a corrugated tile dehydration guide cone is arranged above the turbofan dehydration guide cone, a turbofan dehydration water and corrugated tile dehydration drain pipe are arranged on one side of the corrugated tile dehydration guide cone, and a gas spreading plate is arranged above the corrugated tile dehydration guide cone, the utility model discloses a sewage treatment device, including tower body, water seal, water header, water supply header, suspended solid delivery pipe, suspended solid water seal, and suspended solid pump, water seal, water tank upper portion is provided with the pantile dehydration, and is provided with pantile dehydration access hole on the tower body of pantile dehydration one side, the tower body top is provided with the export pipeline, lower basin high-order overflow pipe and lower basin wash drain pipe all link to each other with the water seal, and is provided with the water seal inlet valve on the water seal, water seal one side is provided with the medicine feeding tank and subsides the water catch basin, and subsides the water catch basin and pass through water pump and water supply header and be connected, be provided with the filter on the water supply header, the suspended.

Compared with the prior art, the beneficial effects of the utility model are that: the full-wet gas purification scrubber tower is provided with a plurality of gas purification tubes,

1. the totally-enclosed water circulation system is adopted, no electric appliance is in direct contact with the system, electric sparks, corona and the like are not generated, no requirement is required for the oxygen content, the system is particularly suitable for purifying flammable and explosive gases, and even in the emergency situations of power failure, water cut and the like, the system can completely ensure that the gas in the equipment does not leak, so that the personal safety and the equipment safety are ensured;

2. the system water self-circulation is adopted, and the sewage generated during the system operation is discharged into a self-prepared sewage sedimentation tank through a pipeline and is pressurized and recycled by a water pump, so that no sewage is discharged;

3. the double water pumps are adopted, one is standby, the other is operated, the power of the single water pump is 3-5 kilowatt per hour, and the energy consumption of other weak electricity and low voltage is 1-2 kilowatt per hour, so that the continuous operation of the equipment has low energy consumption and is suitable for long-term uninterrupted operation;

4. the operation is easy to operate, except for the system debugging when the operation and the water injection are started, the pH value of the water quality and the water level of the sedimentation tank only need to be observed and adjusted at ordinary times, and no special staff is needed at other times;

5. the maintenance period is long and easy to maintain, a steel structure is adopted, the corrosion to the parts can be reduced by controlling the pH value of water to be 7.5-8.5, the maintenance period is 3-5 years, the equipment is provided with a plurality of maintenance manholes, and the access of maintenance personnel is facilitated, so that any part in the equipment can be reached during maintenance, and the damaged parts can be replaced;

6. the method adopts multiple combined washing modes of washing by a lower water tank bubbling pipe and a bubbling net, washing by a bubbling bed, washing by a water film type and washing by a Venturi type to ensure the washing effect, gas is firstly decomposed by double bubbling of the lower water tank bubbling pipe and the bubbling net, and the liquid-gas ratio is 6L/M³Then the mixture is subjected to bubbling bed, water film type dust removal and Venturi type dust removal, and the liquid-gas ratio of the whole process reaches 7L/M³Through the multiple composite purification washing modes, the dust removal rate is ensured to reach more than 98%.

Drawings

Fig. 1 is a schematic view of the bottom structure of a tower body of the present invention;

fig. 2 is a schematic diagram of the internal structure of the tower body of the present invention;

fig. 3 is a schematic diagram of the top structure of the tower body of the present invention;

fig. 4 is a schematic view of the water seal installation structure of the present invention.

Reference numerals: an inlet pipeline 1, a solid discharge door 2, a solid storage chamber 3, a solid discharge two-way door 4, a solid discharge one-way door 5, a lower water tank flushing drain pipe 6, a lower water tank flushing drain valve 7, a tower wall 8, a settling plate 9, a settling plate flushing pipe 10, a settling plate flushing valve 11, a bubbling pipe flange 12, a bubbling pipe flushing pipe 13, a bubbling pipe flushing valve 14, a bubbling pipe 15, a bubbling net flushing pipe 16, a bubbling net flushing valve 17, a bubbling net 18, an oil-water separator 19, a lower water tank high-level overflow pipe 20, a lower water tank 21, a bubbling bed overflow pipe 22, a bubbling bed 23, a bubbling bed maintenance port 24, a water film dedusting downcomer pipe 25, a water film dedusting guide cone 26, a water film dedusting water collection tank 27, dedusting 28, a water film dedusting maintenance port 29, a water film 30, a venturi dedusting pipe 31, a venturi spray head 32, a venturi dedusting maintenance port 33, a venturi dedusting water supply valve 34, a solid discharge one-way door, The device comprises a turbofan dehydration 35, a turbofan dehydration and corrugated tile dehydration drain pipe 36, a corrugated tile dehydration guide cone 37, a gas distribution plate 38, a corrugated tile dehydration access hole 39, a corrugated tile dehydration 40, an outlet pipeline 41, a water supply main pipe 42, a water seal inlet valve 43, a water seal 44, a dosing tank 45, a sedimentation water collecting tank 46, a water pump 47, a filter 48, a suspended matter water seal 49, a suspended matter water seal inlet valve 50, a suspended matter discharge pipe 51, a suspended matter ascending pipe 52, a suspended matter ascending pipe valve 53, a suspended matter pump 54 and a tower body 55.

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.

As shown in fig. 1 to 4, the following technical solutions are adopted in the present embodiment: it comprises an inlet pipeline 1, a solid discharge door 2, a solid storage chamber 3, a solid discharge two-way door 4, a solid discharge one-way door 5, a lower water tank flushing drain pipe 6, a lower water tank flushing drain valve 7, a tower wall 8, a settling plate 9, a settling plate flushing pipe 10, a settling plate flushing valve 11, a bubbling pipe flange 12, a bubbling pipe flushing pipe 13, a bubbling pipe flushing valve 14, a bubbling pipe 15, a bubbling net flushing pipe 16, a bubbling net flushing valve 17, a bubbling net 18, an oil-water separator 19, a lower water tank high-level overflow pipe 20, a lower water tank 21, a bubbling bed overflow pipe 22, a bubbling bed 23, a bubbling bed inspection port 24, a water film dedusting downcomer pipe 25, a water film dedusting guide cone 26, a water film dedusting water collection tank 27, a water film dedusting 28, a water film dedusting inspection port 29, a venturi 30, a venturi dedusting pipe 31, a venturi spray head 32, a venturi dedusting inspection port 33, a venturi dedusting water supply valve 34, a solid discharge one-, A turbofan dehydration 35, a turbofan dehydration and corrugated tile dehydration drain pipe 36, a corrugated tile dehydration guide cone 37, a gas dispersion plate 38, a corrugated tile dehydration access hole 39, a corrugated tile dehydration 40, an outlet pipeline 41, a water supply main pipe 42, a water seal inlet valve 43, a water seal 44, a chemical feeding tank 45, a sedimentation water collecting tank 46, a water pump 47, a filter 48, a suspended matter water seal 49, a suspended matter water seal inlet valve 50, a suspended matter discharge pipe 51, a suspended matter ascending pipe 52, a suspended matter ascending pipe valve 53, a suspended matter pump 54 and a tower body 55, wherein one side of the tower body 55 is provided with an inlet pipeline 1, the bottom of the tower body 55 is provided with a water discharge tank 21, the lower part of the water discharge tank 21 is provided with a solid storage chamber 3, the solid discharge chamber 3 is provided with a solid discharge door 2, a solid discharge secondary door 4 and a solid discharge primary door 5 are arranged between the solid storage chamber 3 and the water, and the lower flume flushing drain pipe 6 is provided with a lower flume flushing drain valve 7 which can lead the precipitated solid generated in the lower flume 21 to enter the bottom solid storage chamber 3 of the washing tower through a solid discharge two-way door 4 and a solid discharge one-way door 5 and be discharged through the solid discharge door 2, a settling plate 9 is arranged in the lower flume 21, the settling plate 9 is close to the tower wall 8 to form a stable flow layer, the generated solid can rapidly enter between the settling plate 9 and the tower wall 8 and fall into the solid storage chamber 3, a settling plate flushing pipe 10 is arranged above the settling plate 9, a settling plate flushing valve 11 is arranged on the settling plate flushing pipe 10, a bubbling pipe flushing pipe 13 is arranged above the settling plate flushing pipe 10, a bubbling pipe flushing valve 14 is arranged on the bubbling pipe flushing pipe 13, the port of the inlet pipeline 1 is connected with a bubbling pipe 15 through a bubbling pipe flange 12, a bubbling net 18 is arranged above the bubbling pipe flushing pipe 13, a bubbling net flushing pipe 16 is arranged in the bubbling net 18, a bubbling net flushing valve 17 is arranged on the bubbling net flushing pipe 16, an oil-water separator 19 is arranged on one side above the bubbling net 18, a lower water tank high-level overflow pipe 20 and a suspended matter discharge pipe 51 are respectively arranged on two sides of a tower body 55 above the bubbling net 18, the oil-water separator 19 is used for separating suspended matters and water at a high water level of a lower water tank 21, the suspended matters suspended on the water surface of the lower water tank 21 can be discharged into a suspended matter water seal 49 through the suspended matter discharge pipe 51, a bubbling bed 23 is arranged above the bubbling net 18, a bubbling bed overflow pipe 22 is arranged in the middle of the bubbling bed 23, the passing gas can be subjected to bubbling decomposition, the purification effect is further improved, the bubbling bed overflow pipe 22 is used for discharging excess water discharged into the lower water tank 21 through a water, maintaining the bubbling bed 23 at a certain liquid level, arranging a bubbling bed access opening 24 on the tower body 55 at one side of the bubbling bed 23, arranging a water film dedusting 28 above the bubbling bed 23, arranging a water film dedusting guide cone 26 on the water film dedusting 28, arranging a water film dedusting downcomer 25 outside the water film dedusting 28, arranging a water film dedusting water collecting tank 27 above the water film dedusting 28, arranging a water film dedusting access opening 29 on the tower body 55 at one side of the water film dedusting 28, arranging a venturi dedusting pipe 31 above the water film dedusting water collecting tank 27, arranging a venturi 30 in the venturi dedusting pipe 31, arranging a venturi nozzle 32 above the venturi 30, arranging a venturi dedusting water supply valve 34 on the venturi nozzle 32, arranging a venturi dedusting access opening 33 on the tower body 55 at one side of the venturi dedusting pipe 31, arranging a turbofan dehydration 35 above the venturi nozzle 32, and arranging a corrugated tile dehydration guide cone 37 above the turbofan dehydration 35, a turbofan dehydration and pantile dehydration drain pipe 36 is arranged at one side of the pantile dehydration guide cone 37, a dispersion gas plate 38 is arranged above the pantile dehydration guide cone 37, the dispersion gas plate 38 makes the passing gas reach all parts uniformly, and the passing gas is prevented from forming a flue gas corridor, the pantile dehydration 40 is arranged at the upper part of the dispersion gas plate 38, the treated gas passes through an outlet pipeline 41 and is output to a washing tower, the water generated by the pantile dehydration 40 and the turbofan centrifugal dehydration 35 is discharged to a water film dust removing platform by the pantile dehydration and the turbofan centrifugal dehydration drain pipe 36, the upper part of the tower body 55 is provided with the pantile dehydration 40, the tower body at one side of the pantile dehydration 40 is provided with a pantile dehydration maintenance port 39, the top of the tower body 55 is provided with the outlet pipeline 41, the high-level overflow pipe 20 of the sink and the flushing drain pipe 6 of the sink are both connected with a water seal 44, and the, water seal 44 one side is provided with dosing tank 45 and subsides catch basin 46, and subsides catch basin 46 and pass through water pump 47 and be connected with water main 42, powder and liquid medicine can be added to dosing tank 45, be used for reinforcing purifying effect, be provided with filter 48 on the water main 42, suspended solid discharge pipe 51 is connected with suspended solid water seal 49, and be provided with suspended solid water seal inlet valve 50 on the suspended solid water seal 49, suspended solid water seal 49 is connected with suspended solid ascending pipe 52 through suspended solid pump 54, and be provided with suspended solid ascending pipe valve 53 on the suspended solid ascending pipe 52.

The washing and purifying tower is a cube, the side length is 4000 mm, the air-to-space ratio is 1-1.5M/s, the air treatment capacity is 10000 cubic meters per hour, and the air-to-washing liquid ratio is 7L/M3. Holes of 3 mm-5 mm are drilled on the upper surface of the bubbling tube 15, and holes do not need to be drilled on two sides of the bubbling tube 15 close to the tube wall 8 to form opposite stable flow areas, otherwise, the descending of solids is influenced, and the washing and purifying effects are influenced.

The washing and purifying tower has a function of washing various parts of the lower water tank 21. During washing, the lower water tank washing drain valve 7 is opened, after the lower water tank 21 discharges the reclaimed water, the bubbling net flushing valve 17 is opened, the venturi dust removal water supply valve 34 is closed, the settling plate flushing valve 11 is opened after a certain time, the bubbling net flushing valve 17 is closed, the bubbling pipe flushing valve 14 is opened after a certain time, the bubbling net flushing valve 17 is closed, the venturi dust removal water supply valve 34 is opened after a certain time, the bubbling pipe flushing valve 14 is closed, and the one-time washing procedure is completed.

The suspended matter in the washing and purifying tower may be tar, etc. incapable of being dissolved together with water and with specific weight higher than that of water, and may be used in eliminating oily impurity from the gas and as one auxiliary gas purifying method. The tar with a certain thickness is added to the upper part of the water discharge tank, so that naphthalene in the coke oven gas can be adsorbed, and the effect of purifying the coke oven gas is achieved.

The washing and purifying tower is internally provided with 4 Venturi dust removal pipes 31, and the internal parts of the Venturi dust removal pipes are sequentially from bottom to top: the venturi tube 30, the venturi dust removal spray head 32 and the centrifugal dehydration 35 of the turbofan. The difference is that on the basis of 4 venturi dedusting pipes 30 designed originally, the volume of the washing tower can be increased, and the method of increasing the number of the venturi dedusting pipes 30 is used for reducing the overhigh flow speed in the system and improving the flow of the passing gas.

The washing and purifying tower has two kinds of dewatering devices, one is centrifugal vortex fan dewatering 35 and the other is corrugated tile dewatering 40, and in the upper part of the centrifugal vortex fan dewatering 35 and the lower part of the corrugated tile guide cone 37, 3 mm holes need to be drilled on the pipeline, so that when air passes through the centrifugal vortex fan dewatering 35, the centrifugal force rotating all around is generated, water drops in the air are discharged through the holes on the pipe wall, when the air passing through the air distributing plate 38 passes through the corrugated tile dewatering 40, water films are formed on the corrugated tile dewatering 40 due to the bending motion of the air, water drops are formed, and when the water drops are too large and can be separated from the corrugated tile, the water drops fall onto the air distributing plate 38.

The washing and purifying tower has medicine adding device to add medicine into the circulating water, water seal 44 with medicine adding tank 45 to make water in weak alkaline state, and the washing and purifying tower has long service life, and can neutralize and reduce impurity in the gas to raise the washing and purifying effect.

When the sewer tank 21 is washed, if suspended matters exist on the sewer tank 21, the suspended matters are firstly discharged into the suspended matter water seal 49, otherwise, the suspended matters enter the water seal 44 through the sewer tank flushing pipe 6 and then enter the precipitation ponding tank 46, and difficulty is brought to subsequent production.

When the solid in the solid accumulation chamber 3 is stored and filled, the solid discharge two-way door 4 and the solid discharge one-way door 5 are closed. Then, the solid discharge door 2 is opened to remove the solid accumulated in the solid accumulation chamber 3 without stopping the production.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (1)

1. An all-wet gas purification scrubber tower, characterized in that: the device comprises an inlet pipeline (1), a solid discharge door (2), a solid storage chamber (3), a solid discharge two-way door (4), a solid discharge one-way door (5), a lower water tank flushing drain pipe (6), a lower water tank flushing drain valve (7), a tower wall (8), a settling plate (9), a settling plate flushing pipe (10), a settling plate flushing valve (11), a bubbling pipe flange (12), a bubbling pipe flushing pipe (13), a bubbling pipe flushing valve (14), a bubbling pipe (15), a bubbling net flushing pipe (16), a bubbling net flushing valve (17), a bubbling net (18), an oil-water separator (19), a lower water tank high-level overflow pipe (20), a lower water tank (21), a bubbling bed overflow pipe (22), a bubbling bed (23), a bubbling bed maintenance port (24), a water film dust removal sewer pipe (25), a water film dust removal guide cone (26), a water film dust removal water collection tank (27), A water film dedusting (28), a water film dedusting access hole (29), a Venturi tube (30), a Venturi dedusting pipe (31), a Venturi nozzle (32), a Venturi dedusting access hole (33), a Venturi dedusting water supply valve (34), a turbofan dehydration (35), a turbofan dehydration and corrugated tile dehydration drain pipe (36), a corrugated tile dehydration guide cone (37), a gas dispersion plate (38), a corrugated tile dehydration access hole (39), a corrugated tile dehydration (40), an outlet pipeline (41), a water supply main pipe (42), a water seal inlet valve (43), a water seal (44), a dosing tank (45), a sedimentation water collecting tank (46), a water pump (47), a filter (48), a suspended matter water seal (49), a suspended matter water seal inlet valve (50), a suspended matter discharge pipe (51), a suspended matter ascending pipe (52), a suspended matter ascending pipe valve (53), a suspended matter pump (54) and a tower body (55), an inlet pipeline (1) is arranged on one side of the tower body (55), a lower water tank (21) is arranged at the bottom of the tower body (55), a solid storage chamber (3) is arranged on the lower portion of the lower water tank (21), a solid discharge door (2) is arranged on the solid storage chamber (3), a solid discharge two-way door (4) and a solid discharge one-way door (5) are arranged between the solid storage chamber (3) and the lower water tank (21), a lower water tank flushing drain pipe (6) is arranged on one side of the lower water tank (21), a lower water tank flushing drain valve (7) is arranged on the lower water tank flushing drain pipe (6), a settling plate (9) is arranged inside the lower water tank (21), the settling plate (9) is close to a tower wall (8), a settling plate flushing pipe (10) is arranged above the settling plate (9), and a settling plate flushing valve (11) is arranged on the settling plate flushing pipe (, a bubbling pipe flushing pipe (13) is arranged above the sedimentation plate flushing pipe (10), a bubbling pipe flushing valve (14) is arranged on the bubbling pipe flushing pipe (13), the port of the inlet pipeline (1) is connected with a bubbling pipe (15) through a bubbling pipe flange (12), a bubbling net (18) is arranged above the bubbling pipe flushing pipe (13), a bubbling net flushing pipe (16) is arranged inside the bubbling net (18), a bubbling net flushing valve (17) is arranged on the bubbling net flushing pipe (16), an oil-water separator (19) is arranged on one side above the bubbling net (18), a lower water tank high-level overflow pipe (20) and a suspended matter discharge pipe (51) are respectively arranged on two sides of a tower body (55) above the bubbling net (18), a bubbling bed (23) is arranged above the bubbling net (18), and a bubbling bed overflow pipe (22) is arranged in the middle of the bubbling bed (23), a bubbling bed maintenance port (24) is arranged on the tower body (55) at one side of the bubbling bed (23), a water film dedusting (28) is arranged above the bubbling bed (23), a water film dedusting guide cone (26) is arranged on the water film dedusting (28), a water film dedusting downcomer (25) is arranged outside the water film dedusting (28), a water film dedusting water collecting tank (27) is arranged above the water film dedusting (28), a water film dedusting maintenance port (29) is arranged on the tower body (55) at one side of the water film dedusting (28), a venturi dedusting pipe (31) is arranged above the water film dedusting water collecting tank (27), a venturi pipe (30) is arranged in the venturi dedusting pipe (31), a venturi nozzle (32) is arranged above the venturi pipe (30), a venturi dedusting water supply valve (34) is arranged on the venturi nozzle (32), a venturi dedusting maintenance port (33) is arranged on the tower body (55) at one side of the venturi dedusting pipe (31), the device is characterized in that a turbofan dehydration pipe (35) is arranged above the Venturi nozzle (32), a corrugated tile dehydration guide cone (37) is arranged above the turbofan dehydration pipe (35), a turbofan dehydration and corrugated tile dehydration drain pipe (36) is arranged on one side of the corrugated tile dehydration guide cone (37), a dispersion gas plate (38) is arranged above the corrugated tile dehydration guide cone (37), a corrugated tile dehydration pipe (40) is arranged on the upper portion of the tower body (55), a corrugated tile dehydration overhaul port (39) is arranged on the tower body (55) on one side of the corrugated tile dehydration pipe (40), an outlet pipeline (41) is arranged on the top of the tower body (55), the high-level overflow pipe (20) of the lower water tank and the flushing drain pipe (6) of the lower water tank are both connected with a water seal (44), a water seal inlet valve (43) is arranged on the water seal (44), a chemical dosing tank (45) and a sedimentation water collecting tank (46) are, and subside catch basin (46) and be connected with water main (42) through water pump (47), be provided with filter (48) on water main (42), suspended solid discharge pipe (51) are connected with suspended solid water seal (49), and are provided with suspended solid water seal inlet valve (50) on suspended solid water seal (49), suspended solid water seal (49) are connected with suspended solid upward pipe (52) through suspended solid pump (54), and are provided with suspended solid upward pipe valve (53) on suspended solid upward pipe (52).

Images