CN217757085U - Tertiary reaction treatment coke quenching effluent plant - Google Patents
Tertiary reaction treatment coke quenching effluent plant Download PDFInfo
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- CN217757085U CN217757085U CN202220947261.4U CN202220947261U CN217757085U CN 217757085 U CN217757085 U CN 217757085U CN 202220947261 U CN202220947261 U CN 202220947261U CN 217757085 U CN217757085 U CN 217757085U
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
A three-stage reaction treatment coke quenching wastewater device is mainly used for treating and recycling coke quenching wastewater, and comprises a reaction system and a precipitation system which are communicated through a pipeline, wherein the reaction system comprises a first-stage reaction tank, a second-stage reaction tank and a third-stage reaction tank which are sequentially connected in series, the side wall of the upper part of the first-stage reaction tank is provided with pipeline water inlet, the top of the first-stage reaction tank is provided with an oxidant feeding device and a catalyst feeding device, the second-stage reaction tank is internally provided with vertically staggered vertical partition plates which partition a tank body into staggered water flow galleries, the third-stage reaction tank is of a rectangular box structure, and the bottom of the tank is sequentially provided with a first-stage aeration disc, a second-stage aeration disc and a third-stage aeration disc along the water flow direction; the sedimentation system comprises a primary sedimentation tank, a secondary sedimentation tank and a filtering tank in sequence, wherein the water inlet end of the primary sedimentation tank is connected with a tertiary reaction tank through a pipeline, the water outlet end of the primary sedimentation tank is communicated with the lower part of the secondary sedimentation tank, the upper part of the primary sedimentation tank is provided with a pipeline discharging supernatant, and the pipeline is provided with a branch pipe connected with the filtering tank. The device has the characteristics of good treatment effect and low cost.
Description
Technical Field
The utility model relates to a wastewater treatment device, which is mainly used for treating and recycling coke quenching wastewater.
Background
The coke quenching wastewater is wastewater generated in the wet coke quenching process, the types of pollutants are complex, high molecular organic matters and ammonia nitrogen substances in the wastewater are difficult to degrade, and meanwhile, the wastewater has high water temperature, and is difficult to be ideally treated by using a conventional biochemical process. If the direct discharge without treatment can seriously affect the ecological environment, how to improve the prior art to treat the coke quenching wastewater so as to discharge the coke quenching wastewater after reaching the standard and realize the discharge is an urgent problem to be solved in the field at present.
The prior patent (application number: CN 201520969420.0) discloses a device for degrading coke quenching wastewater, belonging to the technical field of coal chemical industry. The device comprises a degradation chamber and a circulating water pipe, wherein the water inlet end of the circulating water pipe is arranged at the bottom of the degradation chamber, and the water outlet end of the circulating water pipe is arranged at the top of the degradation chamber; still be equipped with drain hole, sewage pipe and photoelectric tube at the degradation chamber top, and in the photoelectric tube stretched into the degradation chamber, be equipped with the drinking-water pipe in a lateral wall bottom of degradation chamber, be equipped with a plurality of agitating unit in the degradation chamber. A rotator and a circulating water system are arranged in the degradation chamber, so that sewage in the degradation chamber can fully circulate, and a photoelectric tube is inserted into the degradation chamber and can emit ultraviolet rays. The measures can ensure that the nano zinc oxide powder is fully and effectively mixed and contacted with the sewage, and can promote the degradation of macromolecular organic matters and effectively clean the sewage under the action of ultraviolet rays. The device is energy-saving and environment-friendly, and has a compact structure and high sewage removal efficiency. However, the photoelectric tube and the zinc oxide catalytic device of the device have high cost, and the high-temperature coke quenching wastewater is difficult to be thoroughly treated.
Disclosure of Invention
The utility model aims to provide a coke quenching wastewater treatment device with good treatment effect and low cost aiming at the defects of the prior art device.
The device comprises a reaction system and a sedimentation system which are communicated through a pipeline, wherein the reaction system comprises a first-stage reaction tank, a second-stage reaction tank and a third-stage reaction tank which are sequentially connected in series, pipeline water inlet is arranged on the side wall of the upper part of the first-stage reaction tank, an oxidant adding device and a catalyst adding device are arranged at the top of the first-stage reaction tank, an air distribution plate is arranged at the bottom of the first-stage reaction tank and is connected with a variable frequency fan through an air pipe, a hole at the lower part of the first-stage reaction tank is communicated with the second-stage reaction tank, vertical partition plates which are staggered up and down are arranged in the second-stage reaction tank separate a tank body into staggered water flow galleries, a hole at the upper part of the last gallery of the second-stage reaction tank is communicated with the third-stage reaction tank, the third-stage reaction tank is of a rectangular box structure, a probe is arranged in the second-stage reaction tank and is communicated with an online pH detector at the top of the tank, a first-stage aeration disc, a second-stage aeration disc and a third-stage aeration disc are sequentially arranged at the bottom of the tank along the water flow direction, three groups of aeration discs are connected with the variable frequency fan through air pipes, and a PAM anion adding device is arranged on the top plate; the sedimentation system is including one-level sedimentation tank, second grade sedimentation tank and filtering ponds in proper order, and the one-level sedimentation tank is intake and is held through the tertiary reaction tank of pipe connection, and the one-level sedimentation tank goes out the water outlet end and communicates the second grade sedimentation tank lower part through the water conservancy diversion room that advances down and go out on, is equipped with a set of swash plate in the second grade sedimentation tank, and upper portion is equipped with the pipe drainage supernatant, is equipped with the clean water basin in the branch union coupling filtering ponds on the pipeline, and the reuse is carried out after the clean water basin water overflows the back and flows in the filter cloth filtering pond and filter.
After coke quenching wastewater flows into a first-stage reaction tank through a pipeline, an oxidant feeding device and a catalyst feeding device respectively feed industrial hydrogen peroxide and a ferrous salt catalyst, a variable frequency fan starts to start to aerate the tank through an air distribution plate, sewage primarily degrades pollutants through a Fenton reaction in the first-stage reaction tank, then the sewage enters a second-stage reaction tank, at the moment, medicaments are fed at the beginning of a water purifier feeding device and an alkali liquor feeding device for adsorption treatment, the treated sewage flows into a third-stage reaction tank for strong-front and weak-back decreasing aeration treatment, the frequency air inlet and air quantity control of the dissolved oxygen regulation variable frequency fan in the tank is monitored by a pH online detector during the treatment, the residual macromolecular organic matters and ammonia nitrogen pollutants in the wastewater are degraded, then the wastewater flows into a first-stage sedimentation tank for primary flocculation sedimentation, finally flows into a second-stage sedimentation tank through a diversion chamber for secondary sedimentation, the supernatant is discharged through a pipeline after sludge removal, and if the effluent is to be recycled, the effluent flows into a filtering tank through a pipeline for recycling after cloth filtration.
Furthermore, the bottoms of the second-stage reaction tank, the third-stage reaction tank, the first-stage sedimentation tank and the second-stage sedimentation tank are provided with pipelines connected to a sludge concentration tank for removing sludge in the tank.
Furthermore, the sludge concentration tank is communicated with a sludge dewatering device through a pipeline, and a PAM cation feeding device is connected to the sludge dewatering rotating shaft.
Furthermore, the proportion of the number of the air holes on the disks of the first-stage aeration disk, the second-stage aeration disk and the third-stage aeration disk is 3.
Furthermore, the bottoms of the first-stage sedimentation tank and the second-stage sedimentation tank are conical, so that sludge can be conveniently collected.
Furthermore, the volume of the third-stage reaction tank is 2-4 times that of the first-stage reaction tank, so that the macromolecular organic substances can be conveniently and thoroughly removed.
The beneficial effects of the utility model are that:
1. the Fenton reaction and the aeration strong oxidation method degrade pollutants such as high molecular organic matters in the coke quenching, and can effectively remove refractory substances.
2. The effluent is treated by secondary precipitation and cloth filtration, and the wastewater can reach the recycling standard.
3. The aeration is carried out by adjusting the frequency of the fan, so that part of energy consumption can be saved.
Drawings
Fig. 1 is a schematic structural diagram of the utility model.
In the figure: the system comprises a first-level reaction tank 1, an oxidant adding device 1-1, a catalyst adding device 1-2, an air distribution plate 1-3, a second-level reaction tank 2, a water purifying agent adding device 2-1, an alkali liquor adding device 2-2, a third-level reaction tank 3, a PAM anion adding device 3-1, a first-level aeration disc 3-2, a second-level aeration disc 3-3, a third-level aeration disc 3-4, a pH (potential of hydrogen) online detector 3-5, a first-level sedimentation tank 4, a flow guide chamber 4-1, a second-level sedimentation tank 5-1, an inclined plate 5-1, a filtering tank 6-1, a clean water tank 6-1, a filter cloth filtering tank 6-2, a variable frequency fan 7, a sludge concentration tank 8, a sludge dewatering device 9, a PAM cation adding device 9-1, an air duct 10 and a pipeline 11.
Detailed Description
Example 1:
as shown in fig. 1, a device for treating coke quenching wastewater by three-stage reaction comprises a reaction system and a sedimentation system which are communicated through a pipeline, wherein the reaction system comprises a first-stage reaction tank 1, a second-stage reaction tank 2 and a third-stage reaction tank 3 which are sequentially connected in series, a pipeline 11 is arranged on the side wall of the upper part of the first-stage reaction tank 1 for feeding water, an oxidant feeding device 1-1 and a catalyst feeding device 1-2 are arranged at the top, a gas distribution plate 1-3 is arranged at the bottom of the reaction tank, the gas distribution plate 1-3 is connected with a variable frequency fan 7 through an air pipe 10, a perforation at the lower part of the first-stage reaction tank 1 is communicated with the second-stage reaction tank 2, an up-down staggered vertical partition plate is arranged in the second-stage reaction tank 2 for partitioning the tank body into staggered water flow galleries, a perforation at the upper part of the last gallery of the second-stage reaction tank 2 is communicated with the third-stage reaction tank 3, a disc 3 is of a rectangular box body structure, the volume of 2-4 times that the first-stage reaction tank 1, a probe is communicated with a pH on-line detector 3-5 at the top of the tank, a first-stage aeration disc 3, a third-stage aeration disc 3, a PAM aeration disc 3-4 is sequentially arranged at the bottom of the upper part of the first-stage aeration disc 3, and an aeration disc 3-3, and a PAM aeration disc 3-3 are connected with an anion aeration disc 3-3, and a PAM 3-4 proportion of an aeration disc 3, wherein the upper part of the PAM 3; the bottoms of the second-stage reaction tank 2 and the third-stage reaction tank 3 are provided with pipelines connected to a sludge concentration tank 8, the sludge concentration tank 8 is communicated with a sludge dewatering device 9 through a pipeline, and a PAM cation feeding device 9-1 is connected to a sludge dewatering rotating shaft; the sedimentation system comprises a primary sedimentation tank 4, a secondary sedimentation tank 5 and a filtering tank 6 in sequence, wherein the water inlet end of the primary sedimentation tank 4 is connected with a tertiary reaction tank through a pipeline 11, the water outlet end of the primary sedimentation tank 4 is communicated with the lower part of the secondary sedimentation tank 5 through a flow guide chamber 4-1 which is arranged from top to bottom, a group of inclined plates 5-1 are arranged in the secondary sedimentation tank 5, the upper part of the inclined plates is provided with a pipeline 11 for discharging supernatant, a branch pipe is arranged on the pipeline and is connected with a 6-1 clean water tank in the filtering tank 6, and water in the clean water tank flows into a cloth filtering tank 6-2 for filtration and then is recycled; the bottoms of the first-stage sedimentation tank 4 and the second-stage sedimentation tank 5 are conical, and the bottoms are respectively provided with a pipeline connected into a sludge concentration tank 8.
After coke quenching wastewater flows into a first-stage reaction tank 1 through a pipeline 11, an oxidant adding device 1-1 and a catalyst adding device 1-2 begin to respectively add industrial hydrogen peroxide and a ferrite catalyst, a variable frequency fan 7 begins to start to aerate the tank through a 1-3 gas distribution plate, sewage is subjected to primary degradation of pollutants through Fenton reaction in the first-stage reaction tank, then the sewage enters a second-stage reaction tank 2, at the moment, a medicament is added at the beginning of the water purifying agent adding device 2-1 and the alkali liquor adding device 2-2 for adsorption treatment, the sewage flows into a third-stage reaction tank 3 for gradual reduction aeration treatment with strong front and weak back, the frequency air inlet quantity control of the variable frequency fan 7 is monitored by a pH online detector 3-5 to monitor the dissolved oxygen in the tank, the residual high molecular organic matters and ammonia nitrogen pollutants in the wastewater are degraded, then the sewage flows into a first-stage sedimentation tank 4 for primary flocculation sedimentation, and sedimentation are finally flows into a second-stage sedimentation tank through a diversion chamber 4-1 for secondary sedimentation to remove sludge, supernatant is discharged through the pipeline 11, and if the discharged water is recycled after being distributed and filtered in a filtering tank 6 through a pipe 11.
Claims (6)
1. The utility model provides a tertiary reaction treatment quenching waste water device, includes reaction system and the sedimentation system through the pipeline intercommunication, its characterized in that: the reaction system comprises a first-stage reaction tank, a second-stage reaction tank and a third-stage reaction tank which are sequentially connected in series, wherein a pipeline is arranged on the side wall of the upper part of the first-stage reaction tank for water inlet, an oxidant adding device and a catalyst adding device are arranged at the top of the first-stage reaction tank, an air distribution plate is arranged at the bottom of the tank and connected with a variable frequency fan through an air pipe, a perforation at the lower part of the first-stage reaction tank is communicated with the second-stage reaction tank, vertical partition plates which are staggered up and down are arranged in the second-stage reaction tank for partitioning a tank body into staggered water flow galleries, a perforation at the upper part of the last gallery of the second-stage reaction tank is communicated with the third-stage reaction tank, the third-stage reaction tank is of a rectangular box structure, a probe is arranged in the second-stage reaction tank for communicating with a pH on-line detector at the top of the tank, a first-stage aeration disc, a second-stage aeration disc and a third-stage aeration disc are sequentially arranged at the bottom of the tank along the water flow direction, the three groups of aeration discs are connected with the variable frequency fan through air pipes, and a PAM anion adding device is arranged on the top plate of the third-stage aeration disc; the sedimentation system is including one-level sedimentation tank, second grade sedimentation tank and filtering ponds in proper order, and the one-level sedimentation tank is intake and is held and pass through tertiary reaction tank of pipe connection, and the one-level sedimentation tank goes out the water outlet end and communicates second grade sedimentation tank lower part through the water conservancy diversion room that advances down and go out, is equipped with a set of swash plate in the second grade sedimentation tank, and upper portion is equipped with the pipeline discharge supernatant, is equipped with the clean water basin in the branch connection filtering ponds on the pipeline, and the reuse is carried out after the clean water basin internal water spills over the back and flows into the filter cloth filtering pond and filter.
2. The device for treating quenching waste water by three-stage reaction as claimed in claim 1, wherein: and the bottoms of the second-stage reaction tank, the third-stage reaction tank, the first-stage sedimentation tank and the second-stage sedimentation tank are provided with pipelines which are connected into a sludge concentration tank.
3. The device for treating quenching waste water by three-stage reaction as claimed in claim 2, wherein: the sludge concentration tank is communicated with a sludge dewatering device through a pipeline, and a PAM cation feeding device is connected to the sludge dewatering rotating shaft.
4. The device for treating quenching waste water by three-stage reaction as claimed in claim 1, wherein: the proportion of the number of the air holes on the disks of the first-stage aeration disk, the second-stage aeration disk and the third-stage aeration disk is 3.
5. The device for treating quenching waste water by three-stage reaction as claimed in claim 1, wherein: the bottoms of the first-stage sedimentation tank and the second-stage sedimentation tank are conical.
6. The device for treating quenching waste water by three-stage reaction as claimed in claim 1, wherein: the volume of the third-stage reaction tank is 2-4 times of that of the first-stage reaction tank, so that macromolecular organic substances can be thoroughly removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220947261.4U CN217757085U (en) | 2022-04-23 | 2022-04-23 | Tertiary reaction treatment coke quenching effluent plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220947261.4U CN217757085U (en) | 2022-04-23 | 2022-04-23 | Tertiary reaction treatment coke quenching effluent plant |
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| CN217757085U true CN217757085U (en) | 2022-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115571970A (en) * | 2022-12-07 | 2023-01-06 | 河北协同水处理技术有限公司 | Intelligent integrated pretreatment device and process for coking wastewater |
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- 2022-04-23 CN CN202220947261.4U patent/CN217757085U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115571970A (en) * | 2022-12-07 | 2023-01-06 | 河北协同水处理技术有限公司 | Intelligent integrated pretreatment device and process for coking wastewater |
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