CN219449373U - Wastewater treatment and ozone cooling coupling system - Google Patents
Wastewater treatment and ozone cooling coupling system Download PDFInfo
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- CN219449373U CN219449373U CN202320767661.1U CN202320767661U CN219449373U CN 219449373 U CN219449373 U CN 219449373U CN 202320767661 U CN202320767661 U CN 202320767661U CN 219449373 U CN219449373 U CN 219449373U
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Abstract
The utility model relates to the field of wastewater treatment and waste heat utilization, in particular to a wastewater treatment and ozone cooling coupling system. Comprises a wastewater concentration part, a wastewater concentration tower and a wastewater treatment device, wherein the wastewater concentration part comprises a wastewater concentration tower; an ozone cooling part comprising a cooling tube arranged in the ozone generator; and the heat exchanger realizes the exchange between the cold energy of the wastewater concentration part and the heat energy of the ozone cooling part. The method realizes the exchange between the cold energy in the wastewater concentration process and the heat energy in the ozone generation process, and has high reliability and low operation and maintenance cost.
Description
Technical Field
The utility model relates to the field of wastewater treatment and waste heat utilization, in particular to a wastewater treatment and ozone cooling coupling system.
Background
As shown in fig. 1, the existing wastewater concentration system operates as follows. A bypass flue is newly added to an inlet flue of the desulfurizing tower 4, high-temperature flue gas introduced through the boiler induced draft fan 1 flows into the flue gas wastewater concentration tower 3 along the bypass flue, and the high-temperature flue gas carries out evaporation concentration on sprayed low-temperature wastewater in the flue gas wastewater concentration tower 3. In the flue gas and wastewater concentration tower 3, the high-temperature flue gas is cooled and humidified and then becomes saturated cold flue gas, the wastewater is evaporated into water vapor, and the water vapor enters the desulfurization tower 4 along with the saturated cold flue gas, so that the concentration of the wastewater is completed.
The existing wastewater concentration system utilizes the exhaust gas waste heat of the outlet of the boiler induced draft fan to concentrate wastewater, so that the energy consumption cost of wastewater treatment is reduced. But this system also has the following drawbacks:
(1) The flue gas which is not desulfurized before the desulfurization tower is used is reacted with the wastewater to form an operating environment with extremely strong acid corrosiveness, and serious corrosion can occur to system equipment, so that the whole system is unstable, and the reliability is greatly reduced;
(2) The strong corrosive operation environment of the existing wastewater concentration system causes high corrosion resistance requirement of the system, and the investment cost is greatly increased;
(3) The raw flue gas which is not desulfurized carries out complex chemical reaction with the wastewater, which disturbs the water quality of the pretreated wastewater, the wastewater concentrated by the existing system needs to be reprocessed by adding a process, thereby increasing investment, operation and maintenance cost and the like;
(4) The raw flue gas and the wastewater which are not desulfurized carry out complex chemical reaction, so that viscous precipitate is generated in the wastewater, and a wastewater pipeline system is blocked, so that the whole system is abnormal in operation and even is stopped, daily operation and maintenance workload is increased, and the reliability of the system is reduced;
(5) The existing wastewater concentration system operates simultaneously with a boiler induced draft fan system and a desulfurization system, all the systems are mutually influenced, and therefore when the flue gas concentration wastewater system operates and overhauls, the adjustment is complicated and the flexibility is poor.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a wastewater treatment and ozone cooling coupling system which realizes exchange between cold energy in the wastewater concentration process and heat energy in the ozone generation process, and has the advantages of high reliability and low operation and maintenance cost.
The technical scheme of the utility model is as follows: a coupling system for wastewater treatment and ozone cooling comprises
A wastewater concentration section including a wastewater concentration tower;
an ozone cooling part comprising a cooling tube arranged in the ozone generator;
and the heat exchanger realizes the exchange between the cold energy of the wastewater concentration part and the heat energy of the ozone cooling part.
In the utility model, the bottom of the wastewater concentration tower is provided with an air inlet, and the top is provided with an air outlet;
the waste water concentration tower is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively connected with a waste water heat exchange channel in the heat exchanger to form a waste water circulation loop.
And a fan is arranged at the air inlet.
The liquid outlet of the wastewater concentration tower is connected with a wastewater liquid outlet pipe, the wastewater liquid outlet pipe is respectively connected with a wastewater discharge pipe and a wastewater liquid inlet pipe of the heat exchanger, and the wastewater liquid inlet pipe of the heat exchanger is connected with an inlet of a wastewater heat exchange channel of the heat exchanger.
An outlet of the waste water heat exchange channel of the heat exchanger is connected with a liquid inlet of the waste water concentration tower through a waste water liquid outlet pipe of the heat exchanger, and a waste water circulating pump is arranged on the waste water liquid outlet pipe of the heat exchanger;
and a waste water supplementing pipe is also connected to the waste water outlet pipe of the heat exchanger.
And a circulating solution loop is formed between the circulating solution heat exchange channel in the heat exchanger and the cooling pipe of the ozone generator.
The outlet of the circulating solution heat exchange channel in the heat exchanger is connected with the inlet of the cooling pipe of the ozone generator through a circulating solution inlet pipe, and the outlet of the cooling pipe of the ozone generator is connected with the inlet of the circulating solution heat exchange channel in the heat exchanger through a circulating solution outlet pipe.
And a circulating solution pump is arranged on the circulating solution inlet pipe.
The beneficial effects of the utility model are as follows:
(1) The heat generated in the ozone generator is absorbed by the wastewater through the heat exchanger, so that the emission of the heat of the ozone generator is realized, and therefore, the heat required in the wastewater treatment process comes from the ozone generator, the self-supply of a heat source is realized, and the investment cost for generating the heat source is avoided; meanwhile, the wastewater is concentrated to absorb heat and simultaneously provides cold energy for the ozone generator, so that the cooling of the ozone generator is realized, and a cooling tower is not required to be additionally arranged for the ozone generator. Therefore, the cold and heat sources are mutually supplied between the wastewater concentration tower and the ozone generator, and the investment cost of the corresponding cold source and heat source is reduced;
(2) In this application, what go on between environment cold air and the waste water is the physical reaction, does not have new reactant production, promptly through absorbing the waste water of ozone generator internal heat, carries out the heat transfer reaction of heating humidification to environment cold air to realize the concentrated system of waste water, can not form strong acid operational environment, therefore this system is lower to the acid corrosion protection requirement of equipment. Compared with the existing wastewater concentration system, the system has less corrosion damage and difficult fault generation, and the stability and reliability of the whole system are greatly improved;
(3) Unlike the existing waste water concentration system which utilizes the heat of external flue gas, the system realizes concentration by absorbing the heat generated in the ozone generator through the heat exchanger, so that the system has no problems of corrosion, blockage, stability and the like caused by introducing the heat of external flue gas;
(4) Compared with the existing wastewater concentration system, the system does not disturb the water quality of wastewater, and the concentrated wastewater is not required to be treated again by adding a process; meanwhile, viscous sediment is not generated, so that a waste water pipeline system is corroded and blocked, and the running environment is good;
(5) Compared with the existing wastewater concentration system, the system has the advantages of simple process, independent operation, no correlation with a boiler induced draft fan system and a desulfurization system, no adverse effect on the boiler induced draft fan system and the desulfurization system, and better flexibility, and can be adjusted at will during operation.
Drawings
FIG. 1 is a flow chart of the operation of a prior art wastewater concentration system;
fig. 2 is a flow chart of the operation of the present utility model.
In the figure: 1, a boiler induced draft fan; 3, a flue gas wastewater concentration tower; 4, a desulfurizing tower; 5, a fan; 6 a wastewater concentration tower; 7, a heat exchanger; 8, a waste water circulating pump; 9 circulating a solution pump; an ozone generator 10; 11 air inlets; a 12 air outlet; 13 a waste water outlet pipe; 14 a waste water discharge pipe; 15 a waste water liquid inlet pipe of the heat exchanger; 16 waste water outlet pipes of the heat exchangers; 17 a waste water replenishing pipe; 18 a circulating solution inlet pipe; 19 an oxygen inlet pipe; 20 ozone outlet pipe; a 21 cable; 22 circulation solution outlet pipe.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings.
In the following description, specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
As shown in fig. 2, the coupling system for wastewater treatment and ozone cooling comprises a wastewater concentration tower 6, a heat exchanger 7 and an ozone generator 10, wherein a wastewater heat exchange channel and a circulating solution heat exchange channel are arranged in the heat exchanger 7. A wastewater circulation loop is formed between the wastewater concentration tower 6 and the wastewater heat exchange channel in the heat exchanger. A cooling pipeline is arranged in the ozone generator 10, and a circulating solution circulation loop is formed between a circulating solution heat exchange channel in the heat exchanger 7 and a cooling pipe in the ozone generator 10.
The bottom of the wastewater concentration tower 6 is provided with an air inlet, the top of the wastewater concentration tower 6 is provided with an air outlet, and the air inlet is provided with a fan 5 for sending ambient cold air into the wastewater concentration tower 6. The environment cold air is sent into the waste water concentration tower 6 by the fan 5 and then carries out heat exchange reaction with the waste water in the waste water concentration tower 6. The ambient cool air absorbs a part of the water vapor of the wastewater, becomes hot air after being heated and humidified, and is discharged to the atmosphere through the air outlet 12. After the wastewater is absorbed with a part of water vapor, the wastewater becomes concentrated high-salt wastewater after heat exchange and temperature reduction, and the concentration treatment of the wastewater is realized.
The wastewater concentration tower 6 is also provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively connected with the heat exchanger 7 to form a wastewater circulation loop. The liquid outlet of the wastewater concentration tower 6 is connected with a wastewater liquid outlet pipe 13, the wastewater liquid outlet pipe 13 is respectively connected with a wastewater discharge pipe 14 and a heat exchanger wastewater liquid inlet pipe 15, one part of concentrated high-salt wastewater generated in the wastewater concentration tower 6 is discharged from the system through the wastewater discharge pipe 14, and the other part of concentrated high-salt wastewater flows into a wastewater heat exchange channel inlet in the heat exchanger 7 along the heat exchanger wastewater liquid inlet pipe 15.
In the heat exchanger 7, the waste water of the heat exchanger exchanges heat with the circulating solution, and the waste water in the waste water heat exchange channel absorbs the heat of the circulating solution in the circulating solution heat exchange channel, so that the temperature of the waste water is increased again to form high-temperature high-salt waste water. And simultaneously, the temperature of the circulating solution is reduced again to form a low-temperature circulating solution for cooling the ozone generator.
The outlet of the waste water heat exchange channel of the heat exchanger 7 is connected with the liquid inlet of the waste water concentration tower 6 through a waste water outlet pipe 16 of the heat exchanger, and a waste water circulating pump 8 is arranged on the waste water outlet pipe 16 of the heat exchanger and is used for pumping the waste water with heat exchange and temperature rise in the heat exchange pipe into the waste water concentration tower 6. Meanwhile, a waste water supplementing pipe 17 is further connected to the waste water outlet pipe 16 of the heat exchanger and is used for continuously supplementing waste water into the waste water circulation loop, and after the treated waste water is mixed with the high-salt waste water, the salinity of the waste water flowing into the waste water concentration tower 6 is reduced.
The bottom of the ozone generator 10 is provided with an oxygen inlet which is connected with an oxygen inlet pipe 19, the top of the ozone generator 10 is provided with an ozone outlet which is connected with an ozone outlet pipe 20, and meanwhile, the ozone generator 10 is also connected with a cable 21 and is electrified to the ozone generator 10 through the cable 21. In the ozone generator 10, the oxygen reacts to produce ozone, and at the same time about 90% of the electric energy is converted into heat.
The ozone generator 10 is internally provided with a cooling pipe, and after the circulating solution flows into the cooling pipe, the circulating solution absorbs heat in the ozone generator 10, and the circulating solution heats up, so that the ozone generator is cooled.
The outlet of the circulating solution heat exchange channel in the heat exchanger 7 is connected with the inlet of the cooling pipe of the ozone generator 10 through a circulating solution inlet pipe 18, and the circulating solution inlet pipe 18 is provided with a circulating solution pump 9 for pumping the circulating solution cooled in the heat exchanger into the ozone generator. The outlet of the cooling pipe of the ozone generator 10 is connected with the inlet of the circulating solution heat exchange channel in the heat exchanger 7 through a circulating solution outlet pipe 22. In the flowing process of the circulating solution, the heat in the ozone generator 10 is transferred into the heat exchanger 7, the heat of the circulating solution is absorbed by the wastewater in the heat exchanger 7, and meanwhile, the cold energy of the wastewater is transferred into the ozone generator 10 through the circulating solution, so that the temperature of the wastewater can be increased, the ozone generator can be cooled, and the exchange of the cold energy of the wastewater concentration tower 6 and the heat energy of the ozone generator 10 is realized.
The principle of operation of the coupling system is as follows. The environment cold air is sent into a waste water concentration tower 6 by a fan 5, and the environment cold air and the waste water in the waste water concentration tower perform heat exchange reaction in the waste water concentration tower 6. In the wastewater concentration tower 6, the ambient cold air absorbs a part of the water vapor of the wastewater, is warmed and humidified, and then turns into hot air, which is discharged to the atmosphere through the air outlet 12. After the wastewater in the wastewater concentration tower 6 is absorbed with water vapor, the temperature is reduced by heat exchange, and concentrated high-salt wastewater is formed. The concentrated high-salt wastewater is divided into two paths for discharge: one is directly discharged through the waste water discharge pipe 14, and the other is introduced into the heat exchanger 7 through the heat exchanger waste water inlet pipe 15. In the ozone generator 10, heat generated during ozone generation is continuously fed into the heat exchanger 7 by the circulating solution. In the heat exchanger 7, the high-salt wastewater absorbs heat generated in the ozone generation process, and becomes high-temperature high-salt wastewater. After the high-temperature high-salt wastewater and the complementary wastewater to be concentrated are mixed again, the wastewater continuously flows into the wastewater concentration tower 6, so that wastewater circulation is formed. In summary, through the system, after the ambient cold air absorbs a part of water vapor of the wastewater, the water vapor is warmed and humidified to become hot air, and the hot air is discharged to the atmosphere, so that the recycling of heat generated by the ozone generating system is realized; meanwhile, the wastewater to be concentrated is concentrated into high-salt wastewater through the system to be discharged, so that the concentration treatment of the wastewater is realized.
The wastewater treatment and ozone cooling coupling system provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A coupling system for wastewater treatment and ozone cooling is characterized by comprising
A wastewater concentration section including a wastewater concentration tower;
an ozone cooling part comprising a cooling tube arranged in the ozone generator;
and the heat exchanger realizes the exchange between the cold energy of the wastewater concentration part and the heat energy of the ozone cooling part.
2. The coupled wastewater treatment and ozone cooling system of claim 1,
the bottom of the wastewater concentration tower is provided with an air inlet, and the top of the wastewater concentration tower is provided with an air outlet;
the waste water concentration tower is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively connected with a waste water heat exchange channel in the heat exchanger to form a waste water circulation loop.
3. The coupled wastewater treatment and ozone cooling system of claim 2,
and a fan is arranged at the air inlet.
4. The coupled wastewater treatment and ozone cooling system of claim 2,
the liquid outlet of the wastewater concentration tower is connected with a wastewater liquid outlet pipe, the wastewater liquid outlet pipe is respectively connected with a wastewater discharge pipe and a wastewater liquid inlet pipe of the heat exchanger, and the wastewater liquid inlet pipe of the heat exchanger is connected with an inlet of a wastewater heat exchange channel of the heat exchanger.
5. The coupled wastewater treatment and ozone cooling system of claim 2,
an outlet of the waste water heat exchange channel of the heat exchanger is connected with a liquid inlet of the waste water concentration tower through a waste water liquid outlet pipe of the heat exchanger, and a waste water circulating pump is arranged on the waste water liquid outlet pipe of the heat exchanger;
and a waste water supplementing pipe is also connected to the waste water outlet pipe of the heat exchanger.
6. The coupled wastewater treatment and ozone cooling system of claim 1,
a circulating solution loop is formed between the circulating solution heat exchange channel in the heat exchanger and the cooling pipe of the ozone generator.
7. The coupled wastewater treatment and ozone cooling system of claim 6,
the outlet of the circulating solution heat exchange channel in the heat exchanger is connected with the inlet of the cooling pipe of the ozone generator through a circulating solution inlet pipe, and the outlet of the cooling pipe of the ozone generator is connected with the inlet of the circulating solution heat exchange channel in the heat exchanger through a circulating solution outlet pipe.
8. The coupled wastewater treatment and ozone cooling system of claim 7,
and a circulating solution pump is arranged on the circulating solution inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320767661.1U CN219449373U (en) | 2023-04-10 | 2023-04-10 | Wastewater treatment and ozone cooling coupling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320767661.1U CN219449373U (en) | 2023-04-10 | 2023-04-10 | Wastewater treatment and ozone cooling coupling system |
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| CN219449373U true CN219449373U (en) | 2023-08-01 |
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| CN202320767661.1U Active CN219449373U (en) | 2023-04-10 | 2023-04-10 | Wastewater treatment and ozone cooling coupling system |
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- 2023-04-10 CN CN202320767661.1U patent/CN219449373U/en active Active
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