CN215905979U - Pressure quenching wastewater treatment system - Google Patents
Pressure quenching wastewater treatment system Download PDFInfo
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- CN215905979U CN215905979U CN202121188367.2U CN202121188367U CN215905979U CN 215905979 U CN215905979 U CN 215905979U CN 202121188367 U CN202121188367 U CN 202121188367U CN 215905979 U CN215905979 U CN 215905979U
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Abstract
A pressure coke quenching wastewater treatment system comprises a sewage treatment module and a sludge treatment module; the sludge treatment module is connected to the sewage treatment module; the system comprises a first sedimentation tank, a second sedimentation tank, a first PH regulating tank, a Fenton reactor, a second PH regulating tank, a final sedimentation tank, a circulating water tank and a pressure coke quenching system; the first sedimentation tank, the second sedimentation tank, the first PH adjusting tank, the Fenton reactor, the second PH adjusting tank, the final sedimentation tank, the circulating water tank and the pressure coke quenching system are sequentially connected in series, and the drainage of the pressure coke quenching system is connected to the first sedimentation tank. When the purified waste water is quenched in a pressure quenching system, the generated steam impurities are small, the production and utilization can be realized, the sensible heat recovery of red coke is finally realized, no waste gas is discharged, and the method is environment-friendly. Can replace the prior wet quenching water treatment device.
Description
Technical Field
The utility model belongs to the technical field of pressure coke quenching wastewater purification, and particularly relates to a pressure coke quenching wastewater treatment system.
Background
The common wet quenching is a quenching mode commonly adopted in the coking industry, and has the advantages of small investment, simple and convenient operation and capability of consuming a large amount of coking wastewater. The water is converted into gas containing more than ten organic compounds such as phenol, sulfide, cyanide, CO2 and the like after heat exchange with the coke, and the gas is discharged from the top of the quenching tower. Harmful substances in the steam discharged from the quenching tower can not be treated basically, and the steam discharged from the quenching tower is discharged into the atmosphere along with the discharged steam, thereby causing environmental pollution. In view of the above problems, the recent wet quenching technology, pressure type wet quenching, recovers heat while reducing the problem of pollutant emission. The pressure type wet quenching is to put red coke into a pressure quenching tank, then spray quenching water on the red coke, collect and utilize the generated steam, and return the redundant quenching water to a quenching water pool for recycling. The coke quenching water contains a large amount of pollutants such as coke powder, high-concentration COD, ammonia nitrogen, volatile phenol, cyanide and the like, and because the coke quenching process is an evaporation process, the pollutants can be concentrated and enriched in a large amount, the coke quenching water containing a large amount of pollutants can cause the content of generated steam impurities to be large in the coke quenching process, and the utilization of the steam is limited to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressure quenching waste water treatment system to solve the problems.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pressure coke quenching wastewater treatment system comprises a sewage treatment module and a sludge treatment module; the sludge treatment module is connected to the sewage treatment module; the system comprises a first sedimentation tank, a second sedimentation tank, a first PH regulating tank, a Fenton reactor, a second PH regulating tank, a final sedimentation tank, a circulating water tank and a pressure coke quenching system; the first sedimentation tank, the second sedimentation tank, the first PH adjusting tank, the Fenton reactor, the second PH adjusting tank, the final sedimentation tank, the circulating water tank and the pressure coke quenching system are sequentially connected in series, and the drainage of the pressure coke quenching system is connected to the first sedimentation tank.
Further, the sludge treatment module comprises a sludge pool, a sludge pump and sludge dewatering equipment; the sludge tank, the sludge pump and the sludge dewatering equipment are connected in sequence; the first sedimentation tank, the second sedimentation tank and the final sedimentation tank are all connected to a sludge tank.
Further, the bottoms of the first sedimentation tank, the second sedimentation tank and the final sedimentation tank are provided with sludge discharge pumps, and the sludge discharge pumps are connected to the sludge tank through pipelines.
Further, a sludge pump is arranged on the sludge tank and is connected to sludge dewatering equipment through a pipeline.
Furthermore, a Fenton water supply pump is arranged between the first pH adjusting tank and the Fenton reactor.
Further, a coke quenching water pump is arranged between the circulating water tank and the pressure coke quenching system.
Further, a coke quenching water pump is arranged on the circulating water tank and is connected with the pressure coke quenching system through a pipeline.
Further, all be provided with medical kit, dosing pump and agitator on first PH equalizing basin and the second PH equalizing basin.
Further, a Fenton medicament dosing device is arranged on the Fenton reactor.
Further, the sludge treatment equipment is a plate-and-frame filter press, and clear liquid treated by the plate-and-frame filter press is connected to the first sedimentation tank.
Compared with the prior art, the utility model has the following technical effects:
the utility model adopts the precipitation and advanced oxidation technology to oxidize organic matters in the wastewater into carbon dioxide and water, and simultaneously, ferric salt generated by reaction is used as a flocculating agent to further remove suspended matters in the water, so that the purified water quality is better and more stable. When the purified waste water is quenched in a pressure quenching system, the generated steam impurities are small, the production and utilization can be realized, the sensible heat recovery of red coke is finally realized, no waste gas is discharged, and the method is environment-friendly. The system directly removes suspended matters, COD, ammonia nitrogen, volatile phenol, cyanide and other substances in the coke quenching wastewater, and the removal mainly depends on a Fenton reagent, and hydrogen peroxide generates hydroxyl free radicals with strong oxidizing capability in the presence of ferrous iron under an acidic condition and initiates more other active oxygen so as to realize the degradation of organic matters, wherein the oxidation process is a chain reaction. In which the production of hydroxyl radicals is used as the start of the chain, while the other reactive oxygen species and reactive intermediates form the chain nodes, and the reactive oxygen species are consumed and the reaction chain ends. Organic pollutants are oxidized into carbon dioxide and water under the action of hydroxyl free radicals, so that the aim of purification is fulfilled.
When the purified waste water is quenched in a pressure quenching system, the generated steam impurities are small, the production and utilization can be realized, the sensible heat recovery of red coke is finally realized, no waste gas is discharged, and the method is environment-friendly. Can replace the prior wet quenching water treatment device.
Drawings
FIG. 1 is a schematic view of the present invention;
wherein: 1, a first sedimentation tank, 2, a second sedimentation tank, 3, a first PH regulating tank, 4-Fenton water-feeding pumps, 5-Fenton reactors, 6, a second PH regulating tank, 7, a final sedimentation tank, 8 circulating water tanks, 9 coke quenching water pumps, 10 pressure coke quenching systems, 11 sludge tanks, 12 sludge pumps and 13 sludge dewaterers;
Detailed Description
A pressure quenching waste water treatment process is characterized in that the system comprises a sewage treatment system and a sludge treatment system. The sewage treatment system process device comprises a first sedimentation tank 1, a second sedimentation tank 2, a pH adjusting tank 3, a Fenton water-feeding pump 4, a Fenton reactor 5, a pH adjusting tank 6, a final sedimentation tank 7, a circulating water tank 8, a coke quenching water pump 9 and a pressure coke quenching system 10; the sludge treatment system comprises a sludge tank 11, a sludge pump 12 and sludge dewatering equipment 13, wherein the sludge pump is arranged on the sludge tank and is pumped into the sludge dewatering system through a pipeline for sludge dewatering.
The water treatment equipment of each structure is operated in series.
The water discharged by the pressure quenching system 10 enters the first sedimentation tank 1 through a pipeline.
The first sedimentation tank 1 overflows into the second sedimentation tank 2.
The second sedimentation tank 2 overflows into a pH adjusting tank 3.
The PH adjusting tank 3 is provided with a dosing device, a stirrer and a Fenton water feeding pump 4.
And the wastewater is pumped into a Fenton reactor 5 through a Fenton water feeding pump 4, and the Fenton reactor is matched with a Fenton reagent feeding device.
The effluent of the Fenton reactor enters a PH regulating tank 6 through a pipeline,
the PH adjusting tank 6 is provided with a dosing device and a stirrer and then overflows into a final sedimentation tank 7.
The overflow of the final settling tank 7 enters a circulating water tank 8.
The circulating water tank 8 is provided with a coke quenching water pump 9.
The coke quenching water pump 9 is connected with the pressure coke quenching system 10 through a pipeline, and the coke quenching is carried out after the treated wastewater reaches the standard.
The first sedimentation tank 1, the second sedimentation tank 2 and the final sedimentation tank 7 are provided with sludge discharge pumps for conveying sludge in the sedimentation tanks to the sludge tank.
The sludge tank 11 is provided with a sludge pump 12 for pumping sludge into a sludge dewatering system 13 for sludge dewatering.
The utility model provides a pressure quenching waste water treatment process, which comprises the steps that a pressure quenching system is connected with a sewage treatment system through a pipeline, purified quenching water is temporarily stored in a circulating pool, the circulating pool is connected with a quenching pump through a pipeline, and a quenching pump outlet is connected with a water inlet of the pressure quenching system through a pipeline, as shown in figure 1. And (4) allowing steam generated by coke quenching to enter a steam user pipe network for recycling. Sludge generated by the sewage treatment system is mainly coke slag, the sludge is dewatered by a sludge dewatering machine after passing through a sludge pool, and the dewatered coke slag is recycled.
The working principle of the utility model is as follows: the process directly removes suspended matters, COD, ammonia nitrogen, volatile phenol, cyanide and other substances in the coke quenching wastewater, and the removal mainly depends on Fenton reagent, and hydrogen peroxide generates hydroxyl free radicals with strong oxidation capacity in the presence of ferrous iron under an acidic condition and initiates more other active oxygen so as to realize the degradation of organic matters, wherein the oxidation process is a chain reaction. In which the production of hydroxyl radicals is used as the start of the chain, while the other reactive oxygen species and reactive intermediates form the chain nodes, and the reactive oxygen species are consumed and the reaction chain ends. Organic pollutants are oxidized into carbon dioxide and water under the action of hydroxyl free radicals to achieve the purpose of purification, and Fe (OH)3 colloid generated by the reaction has the functions of flocculation and adsorption and can also remove partial organic matters in the water.
Fe2++H2O2→Fe3++HO·+OH-
Fe3++H2O2→Fe2++HO2·+H+
HO2·+H2O2→O2+H2O+HO·
RH+HO·→R·+H2O
R·+Fe3+→R++Fe2+
R++O2→ROO+→CO2+H2O
The coke quenching wastewater is subjected to preliminary precipitation of suspended matters in the wastewater, is adjusted to be in an acidic condition through PH, and is pumped into a Fenton reactor through a Fenton water supply pump, ferrous iron and hydrogen peroxide act in the Fenton reactor to generate hydroxyl radicals, and the hydroxyl radicals oxidize and remove organic matters and harmful substances. Adjusting the pH of the wastewater without the pollutants to be neutral, precipitating in a final precipitation tank, temporarily storing the wastewater completely precipitated in a circulating water tank, and performing pressure quenching.
The utility model discloses a pressure quenching waste water treatment process, which adopts precipitation and advanced oxidation technologies to treat and remove harmful impurities in quenching waste water to ensure that harmful substances in the quenching waste water are minimized, and steam harmful substances generated by pressure quenching are greatly reduced after the water treatment process, so that the demand of steam users can be met, a large amount of red coke sensible heat is recovered, the air discharge of pollutants is reduced, and the air pollution is reduced.
Claims (10)
1. A pressure coke quenching wastewater treatment system is characterized by comprising a sewage treatment module and a sludge treatment module; the sludge treatment module is connected to the sewage treatment module; the system comprises a first sedimentation tank (1), a second sedimentation tank (2), a first PH regulating tank (3), a Fenton reactor (5), a second PH regulating tank (6), a final sedimentation tank (7), a circulating water tank (8) and a pressure coke quenching system (10); the device comprises a first settling tank (1), a second settling tank (2), a first PH regulating tank (3), a Fenton reactor (5), a second PH regulating tank (6), a final settling tank (7), a circulating water tank (8) and a pressure coke quenching system (10) which are sequentially connected in series, wherein the water drainage of the pressure coke quenching system (10) is connected to the first settling tank (1).
2. The pressure quenching waste water treatment system as claimed in claim 1, wherein the sludge treatment module comprises a sludge tank (11), a sludge pump (12) and a sludge dewatering device (13); the sludge tank (11), the sludge pump (12) and the sludge dewatering equipment (13) are connected in sequence; the first sedimentation tank (1), the second sedimentation tank (2) and the final sedimentation tank (7) are all connected to a sludge tank (11).
3. A pressure quenching waste water treatment system according to claim 2, characterized in that the bottom of the first settling tank (1), the bottom of the second settling tank (2) and the bottom of the final settling tank (7) are provided with sludge discharge pumps, and the sludge discharge pumps are connected to the sludge tank (11) through pipelines.
4. A pressure quenching waste water treatment system according to claim 2, characterized in that a sludge pump (12) is installed on the sludge tank (11) and connected to the sludge dewatering equipment (13) through a pipeline.
5. A pressure quenching waste water treatment system according to claim 1, characterized in that a fenton feed pump (4) is arranged between the first PH adjusting tank (3) and the fenton reactor (5).
6. A pressure quenching waste water treatment system according to claim 1, characterized in that a quenching water pump (9) is arranged between the circulating water tank (8) and the pressure quenching system (10).
7. A pressure quenching waste water treatment system according to claim 5, characterized in that a quenching water pump (9) is arranged on the circulating water tank (8), and the quenching water pump (9) is connected with the pressure quenching system (10) through a pipeline.
8. A pressure quenching waste water treatment system according to claim 1, characterized in that the first PH adjusting tank (3) and the second PH adjusting tank (6) are provided with a medicine box, a medicine feeding pump and a stirrer.
9. A pressure quenching waste water treatment system according to claim 1, characterized in that a fenton chemical dosing device is arranged on the fenton reactor (5).
10. A pressure quenching waste water treatment system according to claim 1, characterized in that the sludge treatment equipment is a plate and frame filter press, and the clear liquid treated by the plate and frame filter press is connected to the first sedimentation tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121188367.2U CN215905979U (en) | 2021-05-28 | 2021-05-28 | Pressure quenching wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121188367.2U CN215905979U (en) | 2021-05-28 | 2021-05-28 | Pressure quenching wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215905979U true CN215905979U (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121188367.2U Active CN215905979U (en) | 2021-05-28 | 2021-05-28 | Pressure quenching wastewater treatment system |
Country Status (1)
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|---|---|
| CN (1) | CN215905979U (en) |
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2021
- 2021-05-28 CN CN202121188367.2U patent/CN215905979U/en active Active
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 604, 6 / F, block B, Zhonggang international, one side of Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710016 Patentee after: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. Address before: Room 604, 6 / F, block B, Zhonggang international, one side of Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710016 Patentee before: Shaanxi Yuteng Energy Environmental Protection Technology Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 710018 room 604, floor 6, Zhonggang International Building B, Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee after: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. Address before: Room 604, 6 / F, block B, Zhonggang international, one side of Wenjing Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710016 Patentee before: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Pressure Quenching Wastewater Treatment System Effective date of registration: 20230328 Granted publication date: 20220225 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: Shaanxi Yuteng energy and Environmental Protection Technology Co.,Ltd. Registration number: Y2023610000223 |