CN210559884U - Thermal desorption spray column waste water treatment recycles device - Google Patents
Thermal desorption spray column waste water treatment recycles device Download PDFInfo
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- CN210559884U CN210559884U CN201921409747.7U CN201921409747U CN210559884U CN 210559884 U CN210559884 U CN 210559884U CN 201921409747 U CN201921409747 U CN 201921409747U CN 210559884 U CN210559884 U CN 210559884U
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Abstract
The utility model discloses a thermal desorption spray column effluent treatment recycles device belongs to thermal desorption pollution control, including the waste water input tube, thermal desorption spray column and pond, the entry linkage of reactor is caught with the heavy metal to the waste water input tube, and reactor and sludge concentration device intercommunication are caught to the heavy metal, sludge concentration device's play water end and the upper portion intercommunication in pond, and pond bottom outlet pipe is communicateing husky filter box in proper order, the water injection pump, thermal desorption spray column, adsorption reactor and heat exchanger are reinforceed to charcoal, and adsorption reactor lower part is reinforceed to the charcoal is equipped with outer pipeline, and the heat exchanger export communicates with pond top pipeline. The utility model discloses a thermal desorption spray column effluent treatment recycles device, structural design is reasonable, realizes that heat exchange and circulating water treatment go on in succession simultaneously, equipment and simple process, and convenient to detach installs, and investment and operation cost are low, and high temperature circulating water can directly be reused in tail gas cooling dust removal after handling, and resources are saved has effectively reduced thermal desorption manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of thermal desorption pollution control, especially, relate to a thermal desorption spray column waste water treatment recycles device.
Background
The waste water of the thermal desorption of the organic contaminated soil is generated in the tail gas purification process after the thermal desorption of the contaminated soil, and is derived from the multiphase separation procedures of tail gas such as spraying and cooling, tail gas condensation, flocculation and precipitation, air flotation and the like. The pollution components of the thermal desorption wastewater are complex and consistent with the type of the polluted soil treated by the thermal desorption system, the general pollution types are mostly benzene series, polycyclic aromatic hydrocarbons and the like, and the treatment process adopted by the wastewater with the complex pollution types is complex, the treatment difficulty is high, and the treatment cost is high. High-temperature flue gas generated in the thermal desorption operation process enters a spray tower through a dust removal device to be sprayed and cooled, and is treated by low-temperature plasma and activated carbon to reach the standard and then can be discharged. In order to save resources, cooling spray water needs to be recycled, which causes the continuous accumulation of organic pollution in tail gas in the circulating spray water, and meanwhile, the water temperature gradually rises along with the spraying of the circulating water. When the temperature of the circulating spray water and the concentration of organic matters rise to certain limit values, the temperature reduction effect on thermal desorption tail gas is poor, and pollutants in water can enter the tail gas again. This produces a large amount of high temperature circulating wastewater, which is expensive to treat and discharge if it is directly treated. Therefore, the part of waste water is treated and cooled and then is reused for cooling and dedusting the tail gas of the thermal desorption spray tower, so that the resource is saved, a large amount of operating cost can be reduced, and the cost of thermal desorption remediation of polluted soil is reduced. At present, the organic wastewater treatment methods mostly adopt a physical chemical method, a biochemical method and an advanced treatment method. A biochemical method is generally adopted for organic pollutants in organic wastewater, but the oxidation effect of polycyclic aromatic hydrocarbon and chlorine-containing organic matters is poor. In the soil remediation thermal desorption technology, no process specially aiming at thermal desorption system wastewater treatment exists at present, and the wastewater after treatment cannot realize effective zero emission by means of the organic wastewater treatment process in the chemical industry; especially, the pollution components of the wastewater after thermal desorption are complex, the combined treatment process has poor pertinence, the removal effect on complex pollutants such as polycyclic aromatic hydrocarbon and chlorine-containing compounds is poor, the treatment difficulty and the treatment cost are increased for standard discharge, and the effective treatment of the finally treated wastewater cannot be effectively ensured.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of existence in the background art, and the device is recycled to thermal desorption spray column waste water treatment who provides.
The utility model discloses a thermal desorption spray column effluent treatment recycles device, including the waste water input tube, thermal desorption spray column and pond, its waste water input tube and heavy metal capture reactor's entry linkage, heavy metal capture reactor and sludge concentration device intercommunication, sludge concentration device's the delivery end and the upper portion intercommunication in pond, pond bottom outlet pipe is communicateing husky filter box, water injection pump, thermal desorption spray column, adsorption reactor and heat exchanger are reinforceed to charcoal in proper order, and adsorption reactor lower part is equipped with outer pipeline, and the heat exchanger export communicates with pond top pipeline.
As the utility model discloses a preferred, the silt precipitation tank is being evenly distributed to the bottom in pond.
As the utility model discloses a preferred, pipeline and dosing tank intercommunication are passed through at the pond top, are equipped with the dosing pump on the pipeline of pond and dosing tank.
As the utility model discloses a preferably, be equipped with the second solenoid valve on the pipeline that is equipped with first solenoid valve, thermal desorption spray column and carbon enhanced adsorption reactor on the pipeline between water injection pump and the thermal desorption spray column.
As the optimization of the utility model, the external transmission pipeline is provided with the switch valve.
The utility model discloses a thermal desorption spray column waste water treatment recycles device, structural design is reasonable, realizes that heat exchange and circulating water treatment are gone on in succession simultaneously, and equipment and simple process are convenient for dismantle the installation, and investment and operation cost are low, and the handling capacity is big; the high-temperature circulating water can be directly reused for tail gas cooling and dedusting after being treated, so that resources are saved, and the thermal desorption production cost is effectively reduced; the heat of the circulating water is recovered and is connected with other heating equipment for daily life and production, and meanwhile, the comprehensive utilization of heat energy is realized, and energy is saved.
Drawings
Fig. 1 is a flow chart of the structure of the present invention.
Detailed Description
The following will further explain the device for treating and recycling waste water of the thermal desorption spray tower of the present invention with reference to fig. 1.
Example 1
The utility model discloses a thermal desorption spray column waste water treatment recycles device, including waste water input tube 1, thermal desorption spray column 2 and pond 3, its waste water input tube 1 catches the entry linkage of reactor 4 with the heavy metal, heavy metal catches reactor 4 and sludge thickening device 5 intercommunication, sludge thickening device 5's play water end and pond 3's upper portion intercommunication, 3 bottom outlet pipes in pond communicate sand filter case 6 in proper order, water injection pump 7, thermal desorption spray column 2, adsorption reactor 8 and heat exchanger 9 are reinforceed to the charcoal, 8 lower parts of adsorption reactor are reinforceed and are equipped with outer pipeline 10, heat exchanger 9 export and 3 top pipelines in pond intercommunication.
Example 2
The utility model discloses a thermal desorption spray column waste water treatment recycles device, including waste water input tube 1, thermal desorption spray column 2 and pond 3, its waste water input tube 1 catches the entry linkage of reactor 4 with the heavy metal, heavy metal catches reactor 4 and sludge concentration device 5 intercommunication, sludge concentration device 5's play water end and pond 3's upper portion intercommunication, 3 bottom outlet pipes in pond communicate sand filter case 6 in proper order, water injection pump 7, thermal desorption spray column 2, adsorption reactor 8 and heat exchanger 9 are reinforceed to the charcoal, adsorption reactor 8 lower part is reinforceed to the charcoal is equipped with outer pipeline 10, outer pipeline 10 can communicate with the heating installation in the outer net, for its promotion heat. The outlet of the heat exchanger 9 is communicated with a pipeline at the top of the water tank 3. The bottom of the water pool 3 is uniformly provided with sludge settling tanks 12, which is convenient for dredging and effectively improving water quality. The top of the water tank 3 is communicated with the dosing tank 11 through a pipeline, a dosing pump 13 is arranged on the pipeline of the water tank 3 and the dosing tank 11, and a medicament such as hydrogen peroxide is injected into the water tank 3 through the medicament, the dosage of the hydrogen peroxide is 2-3% of the wastewater, and the hydrogen peroxide is added once a week. The hydrogen peroxide is uniformly mixed in the flowing process of the circulating spray water, so that pollutants in the circulating water can be removed, and organic matters in partial tail gas can be removed. A first electromagnetic valve 14 is arranged on a pipeline between the water injection pump 7 and the thermal desorption spray tower 2, and a second electromagnetic valve 15 is arranged on a pipeline between the thermal desorption spray tower 2 and the carbon enhanced adsorption reactor 8. The output pipeline 10 is provided with a switch valve 16.
During the use, at first carry waste water to pond 3 through heavy metal capture reactor 4 and sludge concentration device 5 with waste water input tube 1, tentatively clear away heavy metal and silt in the waste water, water is filled up in pond 3, and water in the pond 3 is injected into by water injection pump 7 heat desorption spray column 2 again through husky filter box 6, carbon strengthening adsorption reactor 8 and heat exchanger 9, and water carries out the heat exchange back temperature reduction through heat exchanger 9 and flows back to pond 1 in, and the reuse is used for tail gas to spray the cooling. The external pipeline 10 is connected with external heating equipment to use an auxiliary heat source.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (5)
1. The utility model provides a thermal desorption spray column waste water treatment recycles device, including waste water input tube (1), thermal desorption spray column (2) and pond (3), the entry linkage of its characterized in that waste water input tube (1) and heavy metal capture reactor (4), heavy metal capture reactor (4) and sludge concentration device (5) intercommunication, the water outlet end of sludge concentration device (5) and the upper portion intercommunication in pond (3), pond (3) bottom outlet pipe is communicateing sand filter box (6) in proper order, water injection pump (7), thermal desorption spray column (2), adsorption reactor (8) and heat exchanger (9) are reinforceed to the charcoal, adsorption reactor (8) lower part is equipped with outer pipeline (10) are reinforceed to the charcoal, heat exchanger (9) export and pond (3) top pipeline intercommunication.
2. The thermal desorption spray tower wastewater treatment and reuse device according to claim 1, wherein the bottom of the water tank (3) is uniformly provided with a sludge settling tank (12).
3. The thermal desorption spray tower wastewater treatment and recycling device as claimed in claim 1 or 2, wherein the top of the water tank (3) is communicated with the dosing tank (11) through a pipeline, and the pipeline of the water tank (3) and the dosing tank (11) is provided with a dosing pump (13).
4. The thermal desorption spray tower wastewater treatment and recycling device according to claim 1 or 2, characterized in that a first electromagnetic valve (14) is arranged on a pipeline between the water injection pump (7) and the thermal desorption spray tower (2), and a second electromagnetic valve (15) is arranged on a pipeline between the thermal desorption spray tower (2) and the carbon enhanced adsorption reactor (8).
5. The thermal desorption spray tower wastewater treatment and reuse device according to claim 1 or 2, characterized in that the output pipeline (10) is provided with a switch valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921409747.7U CN210559884U (en) | 2019-08-28 | 2019-08-28 | Thermal desorption spray column waste water treatment recycles device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921409747.7U CN210559884U (en) | 2019-08-28 | 2019-08-28 | Thermal desorption spray column waste water treatment recycles device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210559884U true CN210559884U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921409747.7U Active CN210559884U (en) | 2019-08-28 | 2019-08-28 | Thermal desorption spray column waste water treatment recycles device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210559884U (en) |
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2019
- 2019-08-28 CN CN201921409747.7U patent/CN210559884U/en active Active
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