CN114715964A - Sewage treatment system for vehicle after-market - Google Patents
Sewage treatment system for vehicle after-market Download PDFInfo
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- CN114715964A CN114715964A CN202210510138.0A CN202210510138A CN114715964A CN 114715964 A CN114715964 A CN 114715964A CN 202210510138 A CN202210510138 A CN 202210510138A CN 114715964 A CN114715964 A CN 114715964A
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- 239000010865 sewage Substances 0.000 title claims abstract description 219
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000007800 oxidant agent Substances 0.000 claims abstract description 13
- 230000001590 oxidative effect Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 68
- 239000008213 purified water Substances 0.000 claims description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 3
- 238000003805 vibration mixing Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 238000005507 spraying Methods 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 16
- 238000012546 transfer Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000005273 aeration Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention provides a sewage treatment system for the after-market of vehicles, and relates to the technical field of sewage treatment. The sewage treatment system for the vehicle aftermarket of the present invention comprises: the sewage treatment device is used as a device for removing water-soluble organic matters in sewage through reaction of the sewage and an oxidant under the conditions of preset temperature and preset pressure; the heat exchange device is connected with the sewage treatment device in series and is used for preheating sewage and then introducing the preheated sewage into the sewage treatment device, and cooling a product obtained after reaction in the sewage treatment device through the heat exchange device; wherein, the sewage treatment device and the heat exchange device are integrated in the same tubular reactor. The sewage treatment system of the scheme enables sewage to react with the oxidant in the sewage treatment device under certain conditions, so that water-soluble organic matters in the sewage are removed, and the water-soluble organic matters can be removed in time when the spraying coating is water-soluble coating, so that the environment pollution caused by harmful organic matters in the coating is avoided.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system for the after-market of vehicles.
Background
At present, the trend of the water-based vehicle spraying coating in the vehicle after-market is more obvious. Whether oil-based or water-based, it requires disposal to meet environmental requirements. At present, in the common water paint, the common alcohol, alcohol ether and alcohol ester solvents have serious environmental pollution. If the conventional treatment such as activated carbon adsorption is adopted, the exhaust gas containing the water-based paint also contains a large amount of water, so that the activated carbon is easily saturated, and the treatment capability is lost. In addition, in the prior art, the chemical elimination method and the aeration method are most commonly adopted in the treatment of sewage containing organic solvents, and in the chemical elimination method, extra chemicals are often required to be added, so that the aims of quickly removing organic matters from a water body and greatly reducing COD (chemical oxygen demand) are fulfilled. The main disadvantages of this method are that the chemical needs to be manually dosed, which is very easy to cause secondary pollution, and the treatment cost is high, especially for some heavy-pollution water bodies, which is not practical. The aeration method is a slow chemical elimination method, air is filled into a water body through an aeration ball, oxygen in the air is fully dissolved in the water through the aeration method, and the aim of reducing COD is fulfilled through a slow oxidation process. However, although the treatment method avoids the administration of chemical agents, the treatment speed is slow, the treatment capacity for some inert organic pollutants is limited, a large aeration tank is often required to be built, and the aeration process is easy to cause the volatilization of malodorous gas and other associated problems. In the prior art, a method for removing organic matters in sewage is adopted, ignition combustion reaction is carried out at a high temperature of more than 600 ℃ in a reaction kettle to remove the organic matters in the sewage, and the conditions are harsh.
Disclosure of Invention
An object of the first aspect of the present invention is to provide a sewage treatment system for use in the after-market of vehicles, which solves the problem of the prior art that there is no technology for treating the exhaust gas of water-based paint for the after-market of vehicles.
Another object of the first aspect of the present invention is to solve the problems of high requirements and high risks for the equipment used for sewage treatment in the prior art.
In particular, the present invention provides a sewage treatment system for use in the aftermarket of vehicles, comprising:
the sewage treatment device is used as a device for removing the water-soluble organic matters in the sewage by reacting the sewage with the oxidant under the conditions of preset temperature and preset pressure;
the heat exchange device is connected with the sewage treatment device in series and is used for preheating the sewage and then introducing the preheated sewage into the sewage treatment device, and cooling a product obtained after reaction in the sewage treatment device through the heat exchange device;
wherein, the sewage treatment device and the heat exchange device are both tubular reactors.
Optionally, an oscillator is further included, which provides vibrational mixing of the liquid in the tubular reactor by modes of vacuum drawing, mechanical reciprocation, mechanical vibration, ultrasonic vibration, to prevent the occurrence of laminar flow of the liquid in the tubular reactor. Optionally, the oxidant is oxygen.
Optionally, the preset temperature is 210 ℃ to 300 ℃, and the preset pressure is 50atm to 150 atm;
the sewage and the oxygen react in the sewage treatment device under the conditions that the temperature is 210-300 ℃ and the pressure is 50-150 atm, so that water-soluble organic matters in the sewage are removed.
Optionally, each of the heat exchanging devices includes a sewage flowing pipe and a clean water flowing pipe, the sewage flowing pipe and the clean water flowing pipe are integrated close to each other to form one heat exchanging device, so as to cool the reacted product through the low temperature in the sewage flowing pipe, and simultaneously, the reacted product flows through the clean water flowing pipe to preheat the sewage.
Optionally, the number of the heat exchange devices is multiple, the multiple heat exchange devices comprise multiple sewage flow pipelines and multiple purified water flow pipelines, the multiple sewage pipelines are sequentially connected in series before the sewage treatment device to sequentially preheat the sewage, and the multiple purified water flow pipelines are sequentially connected after the sewage treatment device to sequentially cool products after the sewage treatment device; the oscillator is arranged between the liquid inlet of the sewage circulating pipeline of the heat exchange device farthest away from the sewage treatment device and the liquid outlet of the purified water circulating pipeline.
Optionally, the heat exchanger further comprises a pressure reduction separation device arranged behind the heat exchanger, and the pressure reduction separation device is connected with a liquid outlet of the purified water circulation pipeline of the heat exchanger to perform pressure reduction and gas-liquid separation on the purified water.
Optionally, the number of the heat exchange devices is two, and the heat exchange devices are respectively a first heat exchange device and a second heat exchange device, the first heat exchange device comprises a first sewage circulation pipeline and a first purified water circulation pipeline, and the second heat exchange device comprises a second sewage circulation pipeline and a second purified water circulation pipeline; the sewage flows through the first sewage flow pipeline and the second sewage flow pipeline in sequence and then enters the sewage treatment device, and the reacted product flows out after flowing through the second purified water flow pipeline and the first purified water flow pipeline in sequence.
Optionally, a cooling mechanism is further arranged outside the first purified water circulation pipeline to cool the purified water in the first purified water circulation pipeline;
the second sewage circulating pipeline is also provided with a first heating device to heat the sewage in the second sewage circulating pipeline, and the heat of the first heating device comes from the sewage treatment device.
Optionally, a second heating device is further disposed at the sewage treatment device, so that the temperature inside the sewage treatment device for heating the sewage treatment device can reach 210-300 ℃.
The sewage treatment system of this scheme can include sewage treatment plant and heat transfer device, heats sewage through heat transfer device for sewage can react under certain conditions with the oxidant inside the sewage treatment plant, thereby removes the water-soluble organic matter of aquatic, makes in the vehicle after market, can in time detach when spraying coating is water based paint, thereby avoids harmful organic matter polluted environment in the coating.
The temperature and the pressure required by sewage treatment in the scheme are higher, and the sewage treatment device and the heat exchange device are integrated in the same tubular reactor, so that the high-temperature and high-pressure conditions for removing sewage are easy to achieve, and the method is very safe. In addition, the tubular reactor has small volume, low cost, high processing speed, controllability and reliability, and the equipment can simply realize the multiplication of the processing speed through the change of the number of pipelines. The accurate design of the diameter of the pipeline can obtain the optimal balance in various aspects such as water body treatment efficiency, mass transfer efficiency, heat transfer efficiency and the like, and can effectively prevent the occurrence of laminar flow.
The scheme takes oxygen as an oxidant to react, does not need to add any other materials, saves the cost and effectively avoids secondary pollution.
In this scheme, sewage is through heating and pressurizing to supercritical state or subcritical state in sewage treatment plant with oxygen and reacts to the COD in the effectual reduction sewage realizes sewage purification's function, does not introduce any impurity, does not have the pollutant after the reaction yet, can realize the zero release.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a sewage treatment system for use in the aftermarket of vehicles according to a specific embodiment of the present invention;
fig. 2 is a schematic structural view of a sewage treatment system for use in the after-market of vehicles according to another specific embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic block diagram of a sewage treatment system for use in the aftermarket of vehicles according to a specific embodiment of the present invention. As a specific example of the present invention, the sewage treatment system for the vehicle aftermarket of the present embodiment is suitable for the case where the paint for spraying of the vehicle in the vehicle aftermarket is an aqueous paint. In this case, the sewage in the aftermarket of the vehicle contains organic substances.
As a specific embodiment of the present invention, the sewage treatment system 100 of the present embodiment may include a sewage treatment device 110 and at least one heat exchange device 120. Specifically, the sewage treatment apparatus 110 is used as an apparatus for removing an aqueous coating in sewage by reacting the sewage and an oxidizing agent under conditions of a preset temperature and a preset pressure. The at least one heat exchange device 120 is connected in series with the sewage treatment device 110, and is used for preheating the sewage and then introducing the preheated sewage into the sewage treatment device 110, and cooling a product obtained after reaction in the sewage treatment device 110 through the heat exchange device 120. Wherein, the sewage treatment device 110 and the heat exchange device 120 are both tubular reactors.
Specifically, the sewage treatment system 100 of this embodiment may include the sewage treatment device 110 and the heat exchange device 120, and heat sewage through the heat exchange device 120, so that sewage can react with the oxidant inside the sewage treatment device 110 under certain conditions, thereby remove the water-soluble organic matters in sewage, so that in the market behind the vehicle, can in time detach when the spray coating is water-based coating, thereby avoid harmful organic matters in the coating to pollute the environment.
In addition, because the temperature and the pressure required for sewage treatment are both high in the embodiment, the sewage treatment device 110 and the heat exchange device 120 are both tubular reactors, so that the high-temperature and high-pressure conditions for sewage removal are easy to achieve and are very safe. Of course, as another embodiment, the nap treatment device 110 and the heat exchange device 120 in this embodiment can be integrated in a tubular reactor. Because the tubular reactor has small volume, low cost, high processing speed, controllability and reliability, the equipment can simply realize the multiplication of the processing speed through the change of the number of pipelines. The diameter of the pipeline is accurately designed, so that the optimal balance can be obtained in various aspects such as water body treatment efficiency, mass transfer efficiency, heat transfer efficiency and the like, and the laminar flow can be effectively prevented.
Fig. 2 is a schematic block diagram of a sewage treatment system for use in the after-market of vehicles according to another specific embodiment of the present invention. As an embodiment of the present invention, the sewage treatment system 100 of this embodiment may further include an oscillator 130, which provides vibrational mixing to the liquid in the tubular reactor through vacuum drawing, mechanical reciprocating, mechanical vibration, and ultrasonic vibration modes to prevent the occurrence of laminar flow of the liquid in the tubular reactor.
In this embodiment, the oscillator 130 continuously pushes the whole material to be fed and also oscillates back and forth according to a certain frequency, thereby avoiding the condition that the materials are not uniformly mixed or laminar flows occur in the tubular reactor. The materials in the reactor are mixed more uniformly by the oscillator 130, so that the reaction is more uniform and thorough.
The oscillator 130 of this embodiment may be a piston oscillator, which moves the liquid in the tubular reactor back and forth by the back and forth movement of the piston according to a certain frequency.
As a specific example of the present invention, the oxidant in this embodiment is oxygen. In this embodiment, the reaction between the sewage and the oxidant in the sewage treatment device is only to mix the oxygen and the sewage and then react to remove the organic matters in the sewage effectively. The embodiment takes oxygen as an oxidant to react, does not need to add any other materials, saves the cost and effectively avoids secondary pollution.
As a specific example of the present invention, the preset temperature of the present embodiment may be 210 ℃ to 300 ℃, and the preset pressure may be 50atm to 150 atm. The sewage reacts with oxygen in the sewage treatment apparatus 110 at a temperature of 210 to 300 ℃ and a pressure of 50 to 150atm, thereby removing water-soluble organic substances from the sewage. Specifically, the preset temperature of the present embodiment may be 210 ℃, 240 ℃, 280 ℃ or 300 ℃. The preset pressure may be 50atm, 60atm, 80atm, 120atm, or 150 atm.
In this embodiment, when the temperature is about 210 ℃ and the pressure is 50atm to 80atm, the sewage enters a subcritical state, and the sewage and oxygen undergo an oxidation reaction, so that organic matters in the sewage can be removed, and the COD in the sewage can be reduced. When the temperature is about 300 ℃ and the pressure is about 150atm, the sewage enters a supercritical state, and the reaction efficiency of organic matters in the sewage and oxygen is higher and the decontamination capability is stronger. In this embodiment, the COD of the wastewater treated by the above method can be reduced from 20000mg/L to 30000mg/L to about 1000 mg/L.
The embodiment can remove the organic matters in the sewage at about 210-300 ℃, has mild conditions, and can meet the requirements without ignition and combustion.
In this embodiment, sewage is heated and pressurized to a supercritical state or a subcritical state in the sewage treatment device 110 by oxygen to effectively reduce COD in sewage, thereby realizing a sewage purification function, and no impurities are introduced, and no pollutant exists after the reaction, thereby realizing zero emission.
Specifically, in this embodiment, before litigation of the wastewater and oxygen to the heat exchange device 120, the wastewater is fed into the tubular reactor through the high-pressure air, and the wastewater is fed into the tubular reactor through the plunger pump, premixed, and further conveyed into the heat exchange device 120. Inside the tubular reactor, the pressure thereof is always maintained at a preset pressure state.
As a specific example of the present invention, each of the heat exchanging devices 120 of this embodiment may include a sewage flowing pipe and a clean water flowing pipe, which are integrated close to each other into one heat exchanging device 120, so as to cool the reacted product by the low temperature in the sewage pipe, and to preheat the sewage by the reacted product flowing through the clean water flowing pipe.
In this embodiment, a sewage circulating pipeline and a purified water circulating pipeline are arranged in the heat exchanging device 120, so that sewage and purified water exchange heat with each other, and the purified water is cooled while the sewage is heated, thereby increasing the utilization rate of heat, reducing heat loss and reducing energy consumption.
As a specific embodiment of the present invention, the number of the heat exchanging devices 120 is multiple, the heat exchanging devices 120 include multiple sewage flow pipes and multiple clean water flow pipes, the multiple sewage flow pipes are sequentially connected in series before the sewage treatment device 110 to sequentially preheat sewage, and the multiple clean water flow pipes are sequentially connected after the sewage treatment device 110 to sequentially cool products after the sewage treatment device 110; the oscillator 130 is disposed between the inlet end of the sewage flow pipe of the heat exchange device 120 farthest from the sewage treatment device 110 and the outlet end of the clean water flow pipe.
The heat transfer device 120 quantity of this embodiment is a plurality of, can establish ties heat transfer device 120, heats sewage many times, also cools off the water purification many times to reach the purpose to sewage treatment's temperature, improve heat recovery's ability simultaneously.
As a specific embodiment of the present invention, the number of the heat exchanging devices 120 of this embodiment is two, and the two heat exchanging devices are a first heat exchanging device 121 and a second heat exchanging device 122, respectively, the first heat exchanging device 121 may include a first sewage flowing pipeline 123 and a first clean water flowing pipeline 124, and the second heat exchanging device 122 may include a second sewage flowing pipeline 125 and a second clean water flowing pipeline 126. The sewage flows through the first sewage flow pipe 123 and the second sewage flow pipe 125 in sequence and then enters the sewage treatment apparatus 110, and the reaction product flows through the second purified water flow pipe 126 and the first purified water flow pipe 124 in sequence and then flows out.
In this embodiment, the number of the heat exchanging devices is two, and the two heat exchanging devices may be the first heat exchanging device 121 and the second heat exchanging device 122, and the sewage and the purified water in the two heat exchanging devices may exchange heat with each other. Generally, the temperature of the product from the sewage treatment device 110 is still high, and if only one heat exchange device is used to cool the product, the temperature is generally not lower than 100 ℃, and when the temperature is not lower than 100 ℃, the water inside the product still exists in a gas form, so that the purpose of recycling cannot be achieved. Therefore, the two heat exchange devices are arranged in the embodiment, so that the temperature of the product after the sewage treatment device 110 is reduced to be below 100 ℃.
In an actual production process, since the temperature of the purified water needs to be reduced to less than 100 ℃ by cooling the purified water at the first heat exchanging device 121, and the first heat exchanging device 121 does not meet the requirement, a cooling mechanism 140 needs to be further disposed outside the first purified water circulating pipeline 124 of the first heat exchanging device 121 to cool the purified water in the first purified water circulating pipeline 124. Specifically, the cooling mechanism 140 may be air-cooled or other devices that can be cooled.
Specifically, since the sewage treatment device 110 is connected behind the second heat exchange device 122, and the reaction between the sewage in the sewage treatment device 110 and the oxygen needs a higher temperature, the sewage needs to be heated to a certain temperature at the second heat exchange device 122, and the second heat exchange device 122 often cannot meet the requirement, in this embodiment, the first heating device 150 is further disposed at the second sewage circulation pipe 125 of the second heat exchange device 122, so as to heat the sewage in the second sewage circulation pipe 125, and the heat of the first heating device 150 comes from the sewage treatment device 110. In the embodiment, the first heating device 150 can be heated by using heat transfer oil, and the heat transfer oil is used for heating the sewage treatment device 110. Since the reaction of the sewage inside the sewage treatment apparatus 110 with the oxygen is combustion in nature, it emits a large amount of heat during the combustion, and the heat can be utilized to heat the second sewage circulating pipe 125 of the second heat exchanging apparatus 122, thereby reducing the consumption of external energy.
Of course, in the actual use process, since the sewage and the oxygen will finally react inside the sewage treatment device 110, and the temperature of the sewage does not reach the reaction temperature before entering the sewage treatment device 110, the second heating device 160 is further disposed at the sewage treatment device 110, so that the temperature inside the sewage treatment device 110 for heating the sewage treatment device 110 can reach 210 ℃ to 300 ℃, that is, reach the reaction temperature.
As a specific embodiment of the present invention, the sewage treatment system 100 of this embodiment may further include a pressure-reducing separation device 170, which is disposed behind the heat exchange device, and the pressure-reducing separation device 170 is communicated with a liquid outlet of the purified water circulation pipeline of the heat exchange device to perform pressure reduction and gas-liquid separation on the purified water.
After the temperature of the product after the sewage treatment device 110 is reduced by the two heat exchange devices, the temperature of the product is reduced to below 100 ℃, at this time, the water in the product is pure in a liquid form, some gas still contained in the product is gas, and the pressure in the heat exchange device is still large, so that the pressure of the product needs to be reduced, after the pressure is reduced, the gas is released to the controller, and the liquid (mainly water) can be further recycled.
At present, the technological parameters after the vehicle post-treatment sewage is purified by the device and the method are as follows:
from the above table, it can be seen that, after the sewage is treated by the apparatus and the method in the above embodiments, the COD of the sewage is greatly reduced, and the more the air is introduced, the higher the efficiency is, the higher the sewage treatment efficiency is, otherwise, the more the sewage is fed, the lower the efficiency is.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A sewage treatment system for use in the after-market of vehicles, said sewage containing water-soluble organic matter therein, comprising:
the sewage treatment device is used as a device for removing the water-soluble organic matters in the sewage by reacting the sewage with the oxidant under the conditions of preset temperature and preset pressure;
the heat exchange device is connected with the sewage treatment device in series and is used for preheating the sewage and then introducing the preheated sewage into the sewage treatment device, and cooling a product obtained after reaction in the sewage treatment device through the heat exchange device;
wherein, the sewage treatment device and the heat exchange device are both tubular reactors.
2. The sewage treatment system for use in a vehicle aftermarket according to claim 1,
the device also comprises an oscillator which provides vibration mixing for the liquid in the tubular reactor through modes of vacuum drawing, mechanical reciprocating, mechanical vibration and ultrasonic vibration so as to prevent the liquid in the tubular reactor from generating laminar flow.
3. Sewage treatment system for use in the aftermarket of vehicles according to claim 1 or 2,
the oxidant is oxygen.
4. The sewage treatment system for use in a vehicle aftermarket according to claim 3,
the preset temperature is 210-300 ℃, and the preset pressure is 50-150 atm;
the sewage and the oxygen react in the sewage treatment device under the conditions that the temperature is 210-300 ℃ and the pressure is 50-150 atm, so that water-soluble organic matters in the sewage are removed.
5. The sewage treatment system for use in a vehicle aftermarket according to claim 2,
each heat exchange device comprises a sewage flow pipeline and a purified water flow pipeline, the sewage flow pipeline and the purified water flow pipeline are close to each other to form one heat exchange device, so that the reacted product is cooled through the low temperature in the sewage pipeline, and meanwhile, the reacted product flows through the purified water flow pipeline to preheat the sewage.
6. The sewage treatment system for use in a vehicle aftermarket according to claim 5,
the number of the heat exchange devices is multiple, the heat exchange devices comprise a plurality of sewage flow pipelines and a plurality of purified water flow pipelines, the sewage flow pipelines are sequentially connected in series before the sewage treatment device to sequentially preheat sewage, and the purified water flow pipelines are sequentially connected after the sewage treatment device to sequentially cool products after the sewage treatment device; the oscillator is arranged between the liquid inlet of the sewage circulating pipeline of the heat exchange device farthest away from the sewage treatment device and the liquid outlet of the purified water circulating pipeline.
7. The sewage treatment system for use in a vehicle aftermarket according to claim 5,
the heat exchanger is characterized by further comprising a pressure reduction separation device, the pressure reduction separation device is arranged behind the heat exchanger and is connected with a liquid outlet of the purified water circulation pipeline of the heat exchanger, and pressure reduction and gas-liquid separation are carried out on the purified water.
8. The sewage treatment system for use in a vehicle aftermarket according to claim 5,
the heat exchange device comprises a first heat exchange device and a second heat exchange device, wherein the first heat exchange device comprises a first sewage circulating pipeline and a first purified water circulating pipeline, and the second heat exchange device comprises a second sewage circulating pipeline and a second purified water circulating pipeline; the sewage flows through the first sewage flow pipeline and the second sewage flow pipeline in sequence and then enters the sewage treatment device, and the reacted product flows out after flowing through the second purified water flow pipeline and the first purified water flow pipeline in sequence.
9. The sewage treatment system for use in a vehicle aftermarket according to claim 8,
a cooling mechanism is further arranged outside the first purified water circulation pipeline to cool the purified water in the first purified water circulation pipeline;
the second sewage circulating pipeline is also provided with a first heating device to heat the sewage in the second sewage circulating pipeline, and the heat of the first heating device comes from the sewage treatment device.
10. The sewage treatment system for use in a vehicle aftermarket according to claim 9,
the sewage treatment device is also provided with a second heating device, so that the temperature in the sewage treatment device can reach 210-300 ℃ when the sewage treatment device is used for heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210510138.0A CN114715964A (en) | 2022-05-11 | 2022-05-11 | Sewage treatment system for vehicle after-market |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210510138.0A CN114715964A (en) | 2022-05-11 | 2022-05-11 | Sewage treatment system for vehicle after-market |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114715964A true CN114715964A (en) | 2022-07-08 |
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