CN213060334U

CN213060334U - Ozone contact tank

Info

Publication number: CN213060334U
Application number: CN202020998927.XU
Authority: CN
Inventors: 钟楚娴; 张振亚; 刘健军; 张亮平; 刘鹏程; 颜丙乾; 瞿振杰
Original assignee: Shanghai Kangjie Electromechanical Equipment Engineering Co ltd
Current assignee: Shanghai Kangjie Electromechanical Equipment Engineering Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-04-27
Anticipated expiration: 2030-06-03

Abstract

The utility model relates to an ozone contact tank, which comprises a tank body, wherein a water inlet pipe and a water outlet pipe are respectively arranged at the two ends of the tank body, a plurality of blocking and flow guiding partition walls are arranged inside the tank body and are alternately fixed at the top and the bottom of the tank body, and the diversion partition wall fixed on the top is provided with air holes, the diversion partition wall divides the interior of the tank body into a plurality of areas, a water inlet area, an aeration area, a reaction area, a standing area and a water outlet area are arranged in sequence from the inlet pipe to the outlet pipe, an air distribution pipeline and a nozzle are arranged in the aeration zone, the nozzle is arranged on the air distribution pipeline through a flange, the air distribution pipeline extends out of the top of the tank body and is connected with an outlet of a water injector arranged at the top of the tank body, the bottom of the standing area is provided with a power water intake which is connected with an external power water pump through a pipeline, and then is connected to a power water inlet of the water ejector through a pipeline, and an air inlet of the water ejector is connected with an ozone pipeline. Has the advantages that: the method is suitable for the deep treatment project of the wastewater with small wastewater quantity and high suspended matter concentration.

Description

Ozone contact tank

Technical Field

The utility model belongs to the technical field of the environmental protection equipment, in particular to ozone contact tank.

Background

The ozone contact oxidation process is widely applied to the project of advanced wastewater treatment. The purification of the ozone contact oxidation process to the wastewater mainly occurs in the ozone contact tank, and whether the design of the ozone contact tank is reasonable influences the treatment effect of the ozone contact oxidation process.

At present, in a wastewater advanced treatment project, an ozone contact tank mostly adopts an aeration disc or a jet flow mode to add ozone. The aeration dish has comparatively strict requirement to the suspended solid concentration in the waste water when using, and when the suspended solid concentration was too high in the waste water, the aeration dish was blockked up easily. The jet flow type ozone adding method can be applied to occasions with high concentration of suspended matters in wastewater, but when the jet flow ozone adding method is used, extra power water is needed, the adding amount of ozone is large in terms of wastewater deep treatment, the relative power water requirement is also large, for projects with small wastewater quantity, the power water quantity can far exceed the wastewater quantity, and the power water source is in a problem at the moment.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem and provides an ozone contact tank which has simple structure and reasonable layout and is suitable for wastewater with small water volume and high suspended matter concentration.

The technical scheme is that the ozone contact tank comprises a tank body, wherein the tank body is of a fully-closed structure except for a communicating pipeline and parts, and a water inlet pipe and a water outlet pipe are respectively installed at two ends of the tank body; the area connected with the water outlet pipe is a water outlet area; between intake zone to the play pool, aeration zone, reaction zone and the district that stews are in proper order be equipped with a plurality of gas distribution pipeline and a plurality of nozzle in the aeration zone, the nozzle passes through flange mounting on gas distribution pipeline, and one of them gas distribution pipeline stretches out the top of cell body to with install the water dart export at cell body top and link to each other the bottom in the district of steing is equipped with the power water intake, behind the power water intake through pipe connection to outside power water pump, again through pipe connection to the power water inlet of water dart, ozone gas pipeline is connected to the air inlet of water dart.

As a further improvement, the plurality of gas distribution pipelines form a closed square ring at the horizontal part of the bottom of the tank body, two nozzles are respectively installed on each ring edge of the square ring, the number of the nozzles is 8, and the gas distribution pipelines connected with the outlet of the water ejector are connected to the square ring.

As a further improvement, a liquid level sensor is arranged at the position, higher than the level of the power water intake, of the bottom of the standing area, and used for measuring the liquid level of the standing area in real time and feeding back a signal to the power water pump, and when the detected liquid level is lower than the lowest water level, the power water pump is automatically closed and gives an alarm.

As a further improvement, the top parts of the aeration zone and the standing zone are both provided with maintenance manholes for maintenance personnel to enter the inside of the pool body during maintenance.

As a further improvement, a bidirectional pressure release valve is arranged at the top of the reaction zone and used for balancing the pressure inside and outside the tank body.

As a further improvement, a tail gas collecting port is arranged at the top of the water outlet area, and is connected to a tail gas destructor arranged at the top of the tank body through a tail gas collecting pipeline, so as to collect ozone gas which does not participate in the ozone reaction and is separated from the wastewater in the tank body; the tail gas destructor is used for decomposing and destroying the collected tail gas and then discharging the decomposed and destroyed tail gas, so that the tail gas is prevented from polluting the environment.

Advantageous effects

The beneficial effects are that: the utility model discloses a water dart combines throwing of nozzle to throw the mode, can adapt to the higher occasion of waste water suspended solid concentration. Meanwhile, the water injector mixes ozone and power water and then adds the mixed water in the form of ozone water solution, so that the mass transfer efficiency of the ozone is improved; the gas distribution pipeline is designed into a square ring form, so that sufficient and uniform gas distribution is ensured; and the ozone water solution is sprayed into the ozone contact tank through the nozzle, so that the mixing of ozone and wastewater in the aeration zone is enhanced, the contact between the ozone and pollutants in the wastewater is more sufficient, the ozone oxidation efficiency is improved, and the ozone advanced treatment effect is improved.

Meanwhile, the design of the ozone contact tank adopts effluent backflow as power water supply water ejector, and the problem of source of the power water for ozone jet feeding can be well solved. Aiming at the project with small wastewater amount, a standing area is designed on the tank body structure, the first standing area can be used as a backflow power water buffer storage area, the volume of the standing area is designed according to the pumping requirement of a power water pump for a certain time, and the sufficient backflow power water amount is ensured; and secondly, the discharged water is given a certain standing time to decompose and remove residual ozone in the water, so that the residual ozone concentration of the wastewater is reduced, the ozone index of the discharged water is ensured to meet the requirement, and the ozone corrosion of the power water pump caused by the backflow power water is avoided.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the inside of the tank body of the present invention.

Reference numbers in the figures:

1. a tank body 2, a water inlet pipe 3 and a water outlet pipe

4. Flow guide partition wall 5, water inlet area 6 and aeration area

7. A reaction zone 8, a standing zone 9 and a water outlet zone

10. Power water intake 11, power water pump 12, water ejector

13. Gas distribution pipeline 14, nozzle 15 and inspection manhole

16. Two-way pressure release valve 17, liquid level sensor 18 and tail gas collecting port

19. Tail gas destructor

Detailed Description

In order to further understand and appreciate the structural features and advantages of the present invention, preferred embodiments and the accompanying drawings are described in detail as follows:

as shown in fig. 1-2, an ozone contact tank comprises a tank body 1, the tank body 1 is of a totally enclosed structure except for communicating pipes and components, a water inlet pipe 2 and a water outlet pipe 3 are respectively installed at two ends of the tank body 1, a plurality of blocking and guiding partition walls 4 are arranged inside the tank body 1, the blocking and guiding partition walls 4 are alternately fixed at the top and the bottom of the tank body 1, air holes are arranged on the guiding partition walls fixed at the top, the guiding partition walls 4 divide the inside of the tank body into a plurality of areas, the area connected with the water inlet pipe 2 is a water inlet area 5, and the water inlet area 5 enables inlet water to be uniformly distributed; the area connected with the water outlet pipe 3 is a water outlet area 9, and the water outlet area 9 can play a role of water outlet buffering. Between the water inlet zone 5 and the water outlet zone 9, an aeration zone 6, a reaction zone 7 and a standing zone 8 are arranged in sequence. The aeration zone 6 is used as an ozone adding zone, and ozone is fully mixed with the wastewater to oxidize pollutants by ozone. The reaction zone 7 is used for the wastewater to fully contact and react with the ozone in the zone, and the ozonization reaction is ensured to be more fully and completely. The standing area 8 is used for standing and buffering the wastewater after the ozonization reaction, and the standing can decompose or remove residual ozone in the water; the standing area 8 is provided with a water intake for supplying power water in a backflow mode, and the effective volume of the area is designed according to the actual power water demand for 10min under the condition that the quantity of waste water is smaller than the power water demand, so that the sufficient amount of the backflow power water is ensured. The flow guide partition wall 4 divides the tank body 1 into different areas and can enhance the flow of wastewater in the tank body; the aeration zone 6 is internally provided with a plurality of gas distribution pipelines 13 and a plurality of nozzles 14, the nozzles 14 are arranged on the gas distribution pipelines through flanges, one of the gas distribution pipelines extends out of the top of the tank body and is connected with an outlet of a water ejector 12 arranged at the top of the tank body, the bottom of the standing zone 8 is provided with a power water intake 10, the power water intake 10 is connected to an external power water pump 11 through a pipeline and then is connected to a power water inlet of the water ejector 12 through a pipeline, and an air inlet of the water ejector 12 is connected with an ozone gas pipeline.

The plurality of gas distribution pipelines 13 form a closed square ring at the horizontal part of the bottom of the tank body 1, each ring edge of the square ring is respectively provided with two nozzles, the number of the nozzles is 8, the gas distribution pipelines connected with the outlet of the water injector are connected to the square ring and used for distributing ozone water solution, and the ozone can be fully and uniformly distributed in an aeration area after being added.

And a liquid level sensor 17 is arranged at the position, higher than the level of the power water intake 10, of the bottom of the standing area 8 and used for measuring the liquid level of the standing area in real time and feeding back a signal to the power water pump, and when the detected liquid level is lower than the lowest water level, the power water pump is automatically closed and gives an alarm.

And the top parts of the aeration zone 6 and the standing zone 8 are provided with inspection manholes for allowing the maintainers to enter the inside of the pool body during inspection.

The top of the reaction zone 7 is provided with a bidirectional pressure release valve 16 for balancing the pressure inside and outside the tank body.

A tail gas collecting port 18 is arranged at the top of the water outlet zone 9, is connected to a tail gas destructor 19 arranged at the top of the tank body through a tail gas collecting pipeline, and is used for collecting ozone gas which does not participate in the ozone reaction and is separated from the wastewater in the tank body; the tail gas destructor is used for decomposing and destroying the collected tail gas and then discharging the decomposed and destroyed tail gas, so that the tail gas is prevented from polluting the environment.

The utility model discloses a theory of operation:

waste water gets into ozone contact tank district of intaking through inlet tube 2, and the whole ozone contact tank of edge water conservancy diversion partition wall 4 flow through behind the waste water evenly distributed in the district of intaking 5.

In the aeration zone 6, ozone and power water are mixed by a water injector to form an ozone water solution, the ozone water solution passes through an air distribution pipeline 13, the ozone is uniformly fed into the aeration zone of the ozone contact tank by a nozzle 14, wastewater is fully mixed and contacted with the ozone, and an ozonization reaction is carried out to remove pollutants in the water.

In the reaction zone 7, the ozone in the water continuously oxidizes the pollutants in the wastewater, so that the ozone oxidation reaction is fully performed, and the purification effect of the ozone process on the wastewater is improved.

In the standing area 8, residual ozone in water is decomposed or removed along with standing of the wastewater, so that residual ozone in the wastewater is reduced; meanwhile, in order to solve the problem of the requirement of power water of a small waste water amount project, the ozone contact pool is designed in such a way that the power water pump takes the power water pump 11 from the power water intake 10 at the bottom of the standing area and sends the power water pump 11 to the water ejector 12 as the power water, and the standing area is designed with enough volume to meet the requirement of pumping water amount of the power water pump for 10min, so that the problem of the source of the power water is solved. Meanwhile, a liquid level sensor is arranged in the standing area to feed the real-time liquid level back to the power water pump, and when the liquid level is lower than the lowest water level, the power water pump is automatically turned off and gives an alarm to protect the power water pump 11.

Finally, the wastewater is discharged out of the ozone contact tank from the water outlet area through the water outlet pipe after the ozone treatment is finished.

The top of the ozone contact tank is provided with a two-way pressure safety valve 16, and when the pressure in the contact tank is increased due to ozone addition, the two-way pressure safety valve 16 is opened to communicate the inside and the outside of the tank for pressure relief; correspondingly, when the external pressure of the tank body is higher than the internal pressure of the tank body, the two-way pressure safety valve 16 is also opened to balance the internal pressure and the external pressure, so that the structure of the tank body is protected.

In addition, ozone contact tank still designs and has tail gas collection processing apparatus, and ozone and other gas that a small amount of deviate from among the ozone reaction process are pumped to tail gas destroyer 19 via the tail gas collecting pipe, and the decomposition destroys the emission behind the ozone to reduce the pollution of tail gas emission to the air.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications of the shapes, structures, features and spirit described in the claims of the present invention should be included in the scope of the present invention.

Claims

1. An ozone contact tank comprises a tank body, wherein the tank body is of a fully-closed structure except for a communicating pipeline and parts, and a water inlet pipe and a water outlet pipe are respectively installed at two ends of the tank body; the area connected with the water outlet pipe is a water outlet area; between intake zone to the play pool, aeration zone, reaction zone and the district that stews are in proper order be equipped with a plurality of gas distribution pipeline and a plurality of nozzle in the aeration zone, the nozzle passes through flange mounting on gas distribution pipeline, and one of them gas distribution pipeline stretches out the top of cell body to with install the water dart export at cell body top and link to each other the bottom in the district of steing is equipped with the power water intake, behind the power water intake through pipe connection to outside power water pump, again through pipe connection to the power water inlet of water dart, ozone gas pipeline is connected to the air inlet of water dart.

2. The ozone contact tank as claimed in claim 1, wherein the plurality of gas distribution pipes form a closed square ring at the bottom horizontal portion of the tank body, two nozzles are installed at each side of the square ring, the number of the nozzles is 8, and the gas distribution pipes connected to the outlets of the water ejectors are connected to the square ring.

3. The ozone contact tank of claim 1, wherein a liquid level sensor is arranged at the bottom of the standing zone at a level higher than the power water intake.

4. The ozone contact tank of claim 1, wherein a manhole is provided at the top of each of the aeration zone and the standing zone.

5. The ozone contact cell of claim 1, wherein a two-way pressure relief valve is mounted at the top of the reaction zone.

6. The ozone contact tank as claimed in claim 1, wherein the top of the water outlet zone is provided with a tail gas collecting port, and the tail gas collecting port is connected to a tail gas destructor installed at the top of the tank body through a tail gas collecting pipeline.