CN113735304A - Coke quenching waste water ozone catalytic oxidation device - Google Patents
Coke quenching waste water ozone catalytic oxidation device Download PDFInfo
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- CN113735304A CN113735304A CN202110445143.3A CN202110445143A CN113735304A CN 113735304 A CN113735304 A CN 113735304A CN 202110445143 A CN202110445143 A CN 202110445143A CN 113735304 A CN113735304 A CN 113735304A
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 230000003647 oxidation Effects 0.000 title claims abstract description 63
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 63
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 58
- 239000002351 wastewater Substances 0.000 title claims abstract description 43
- 238000010791 quenching Methods 0.000 title claims abstract description 41
- 230000000171 quenching effect Effects 0.000 title claims abstract description 41
- 239000000571 coke Substances 0.000 title claims abstract description 35
- 239000010802 sludge Substances 0.000 claims abstract description 61
- 238000004062 sedimentation Methods 0.000 claims abstract description 35
- 238000005189 flocculation Methods 0.000 claims abstract description 24
- 230000016615 flocculation Effects 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 229940037003 alum Drugs 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000005276 aerator Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims 1
- 238000005352 clarification Methods 0.000 abstract description 11
- 238000005345 coagulation Methods 0.000 abstract description 4
- 230000015271 coagulation Effects 0.000 abstract description 4
- 238000011112 process operation Methods 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract description 2
- 238000003911 water pollution Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 5
- 239000012295 chemical reaction liquid Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
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- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a coke quenching wastewater ozone catalytic oxidation device which comprises a coke quenching wastewater pool, a mixing pool and an ozone catalytic oxidation device, wherein the coke quenching wastewater pool is communicated with the mixing pool through a pipeline with a pump, the mixing pool is communicated with a flocculation pool through a pipeline with a valve, and one side of the flocculation pool overflows and is communicated with a sedimentation pool; the high-density clarification tank and the ozone catalytic oxidation reactor are adopted to cooperatively treat the coke quenching wastewater, the design is reasonable, the equipment is simple, the flow is simple and easy to operate, the treated effluent can meet the requirement of the water pollution emission concentration limit value of an enterprise, the process operation is stable, and the engineering application value is very strong; adopting a high-density clarification tank; the high-density clarification tank integrates flocculation, sedimentation and sludge backflow, has fewer devices compared with the traditional coagulation sedimentation tank, is simple and convenient to install and start, and is convenient to operate and maintain; the surface load is high, the occupied area is small, and the effluent quality is good; the sludge reflux quantity is convenient to control, the sludge discharge concentration is high, the sludge volume is small, and the treatment is convenient.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a coke quenching wastewater ozone catalytic oxidation device.
Background
The main pollutants of the coke quenching wastewater are CODcr, ammonia nitrogen, volatile phenol, cyanide and SS, and the water temperature is higher and is about 60-70 ℃, so the treatment difficulty is higher. The prior common coke quenching wastewater treatment process comprises Fenton oxidation and ozone catalytic oxidation. The traditional Fenton is simple, the decomposition speed of hydrogen peroxide is high, and the oxidation rate is high, however, the Fenton oxidation treatment operation is complex, the operation cost is high, the corrosion prevention requirement is high, a large amount of iron mud is generated in the treatment process, hazardous waste treatment is needed, and the cost is high. Compared with the traditional Fenton oxidation method, the ozone catalytic oxidation technology has the advantages of good treatment effect, convenient continuous operation, wide application range, no secondary pollution and the like, can react with most of organic matters in the waste water and microorganisms rapidly, can remove pollutants such as phenol, cyanogen and the like in the waste water, reduces COD (chemical oxygen demand) and BOD (biochemical oxygen demand) values, and can play a role in decoloring, deodorizing and sterilizing, the optimal temperature of the ozone catalytic oxidation is about 50 ℃, and the temperature of the coke quenching waste water after pretreatment can reach the optimal temperature of the ozone catalytic oxidation, so the ozone catalytic oxidation has good application prospect in the aspect of deep treatment of the coke quenching waste water. However, the existing ozone catalytic oxidation device has the defects of poor gas-liquid mass transfer effect, so that the ozone oxidation technology has high energy consumption and high cost, and on the other hand, the ozone catalytic oxidation reactor has the problems of too much foam, waste of tail gas and the like, so that the further popularization and application of the ozone catalytic oxidation reactor are limited.
Disclosure of Invention
The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.
A coke quenching wastewater ozone catalytic oxidation device comprises a coke quenching wastewater pool, a mixing pool and an ozone catalytic oxidation device, wherein the coke quenching wastewater pool is communicated with the mixing pool through a pipeline with a pump, the mixing pool is communicated with a flocculation pool through a pipeline with a valve, and one side of the flocculation pool is communicated with a sedimentation pool in an overflow way; the bottom of the sedimentation tank is provided with a sludge discharge port, the sludge discharge port is communicated with a sludge concentration tank through a pipeline with a sludge discharge pump, the bottom of the sludge concentration tank is connected with a plate-and-frame filter press through a pipeline with a pump, the lower part of the sedimentation tank above the sludge discharge port is provided with an alum blossom circulation port, the alum blossom circulation port is communicated with the inlet end of a sludge circulating pump, and the outlet end of the sludge circulating pump is communicated with the inlet at the lower end of the flocculation tank through a pipeline with a valve; the supernatant part of the sedimentation tank is connected with an ozone catalytic oxidation device through a pipeline with a pump; the ozone catalytic oxidation device comprises a circulating water pump and an ozone catalytic oxidation reactor, an aerator is arranged at the bottom end in the ozone catalytic oxidation reactor, a microporous partition plate is arranged above the aerator, a plurality of guide plates which are installed in a crossed mode are arranged on the side wall of the ozone catalytic oxidation reactor above the microporous partition plate, a continuous S-shaped space is formed among the guide plates, a high-efficiency catalyst is arranged in the continuous S-shaped space, a spray head is arranged above the high-efficiency catalyst in the ozone catalytic oxidation reactor, and the supernatant part of the sedimentation tank is connected with the spray head through a pipeline with a pump in a water supply mode;
be provided with two delivery ports on the ozone catalytic oxidation reactor lateral wall of micropore baffle below and be clear water export, circulation export is linked together through pipeline and circulating water pump's the inlet port, circulating water pump through the area valve pipeline with the shower head is linked together, and the clear water export is connected through pipe and multi-media filter water supply, and multi-media filter's play water end is linked together with the clean water basin.
As a further scheme of the invention: the top of the ozone catalytic oxidation reactor is communicated with the bottom of the coke quenching wastewater pool through a valved ozone tail gas discharge pipe.
As a further scheme of the invention: the upper part of the sedimentation tank is provided with an inclined tube separation area, and the clear liquid part at the upper part of the inclined tube separation area passes through a pipeline with a pump and a spray header.
The invention has the beneficial effects that: the high-density clarification tank and the ozone catalytic oxidation reactor are adopted to cooperatively treat the coke quenching wastewater, the design is reasonable, the equipment is simple, the flow is simple and easy to operate, the treated effluent can meet the requirement of the water pollution emission concentration limit value of an enterprise, the process operation is stable, and the engineering application value is very strong; adopting a high-density clarification tank; the high-density clarification tank integrates flocculation, sedimentation and sludge backflow, has fewer devices compared with the traditional coagulation sedimentation tank, is simple and convenient to install and start, and is convenient to operate and maintain; the surface load is high, the occupied area is small, and the effluent quality is good; the sludge reflux quantity is convenient to control, the sludge discharge concentration is high, the sludge volume is small, and the treatment is convenient.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, a coke quenching wastewater ozone catalytic oxidation apparatus includes a coke quenching wastewater pool 1, a mixing pool 3, and an ozone catalytic oxidation apparatus 13, wherein the coke quenching wastewater pool 1 is communicated with the mixing pool 3 through a pipeline with a pump, the mixing pool 3 is communicated with a flocculation pool 5 through a pipeline with a valve, and a sedimentation pool 7 is communicated with one side of the flocculation pool 5 in an overflow manner; a mixer 26 is arranged in the flocculation tank 5;
the bottom end of the sedimentation tank 7 is provided with a sludge discharge port 27, the sludge discharge port 27 is communicated with the sludge concentration tank 10 through a pipeline with a sludge discharge pump 9, the bottom of the sludge concentration tank 10 is connected with a plate-and-frame filter press 11 through a pipeline with a pump, the lower part of the sedimentation tank 7 above the sludge discharge port is provided with an alum blossom circulation port 28, the alum blossom circulation port 28 is communicated with the inlet end of a sludge circulation pump 8, and the outlet end of the sludge circulation pump 8 is communicated with the inlet at the lower end of the flocculation tank 5 through a pipeline with a valve;
the supernatant part of the sedimentation tank 7 is connected with an ozone catalytic oxidation device 13 through a pipeline with a pump;
the ozone catalytic oxidation device 13 comprises a circulating water pump 12 and an ozone catalytic oxidation reactor, an aerator 14 is arranged at the bottom end in the ozone catalytic oxidation reactor, a microporous partition plate 18 is arranged above the aerator 14, a plurality of guide plates 16 which are installed in a cross mode are arranged on the side wall of the ozone catalytic oxidation reactor above the microporous partition plate 18, a continuous S-shaped space is formed among the guide plates 16, a high-efficiency catalyst 17 is arranged in the continuous S-shaped space, a spray header 15 is arranged above the high-efficiency catalyst 17 in the ozone catalytic oxidation reactor, and the supernatant part of the sedimentation tank 7 is connected with the spray header 15 through a pipeline with a pump;
be provided with two delivery ports on the ozone catalytic oxidation reactor lateral wall of micropore baffle 18 below and be clear water export, circulation export is linked together through the inlet port of pipeline with circulating water pump 12, circulating water pump 12 through the valve pipeline with shower head 15 is linked together, and the clear water export is through pipe and multimedium filter 22 water supply connection, and multimedium filter 22's the delivery end is linked together ozone catalytic oxidation reactor top through the valve ozone tail gas delivery pipe 19 and is linked together bottom coke quenching wastewater disposal basin 1 with clean water basin 23.
The upper part of the sedimentation tank 7 is provided with an inclined tube separation area 6, and the clear liquid part at the upper part of the inclined tube separation area 6 is communicated with a spray header 15 through a pipeline with a pump.
The detailed functions of part of structural components in the coke quenching wastewater ozone catalytic oxidation device are as follows:
a high-density clarification tank: the high-density clarification tank is a high-efficiency water treatment structure integrating flocculation, sedimentation and sludge backflow. Mainly comprises a mixing tank, a flocculation tank, a sedimentation tank and a sludge circulating system. The coke quenching wastewater enters a mixing tank through a lift pump, a coagulant is added into the mixing tank and then enters a flocculation tank through a water outlet pipe of the mixing tank, return sludge in a sedimentation tank is connected with a water outlet pipe of the mixing tank through a sludge circulation system and is mixed with incoming water to flow into the flocculation tank, and the return sludge is fully mixed with a flocculating agent in the flocculation tank through stirring. The effluent of the flocculation tank enters a sedimentation tank, most of alum flocs are precipitated below the sedimentation tank, the inclined tube above the sedimentation tank increases the precipitation area, and residual alum flocs in the water are removed at the inclined tube to generate qualified effluent. The alum blossom is precipitated and concentrated at the bottom of the sedimentation tank, the concentration zone is divided into two layers, the sludge on the upper layer is used for sludge circulation to accelerate the growth of the alum blossom and increase the density of the alum blossom, and the sludge on the lower layer is inactivated and is periodically discharged.
Ozone catalytic oxidation unit: water coming out of the high-density clarification tank enters the reactor from the upper end of the reactor through the water inlet pump and the circulating pump through the spray header, and flows downwards from top to bottom under the action of the circulating pump and gravity to fully contact with the catalyst and the ozone. Ozone enters from the bottom of the reactor, is prepared on site by adopting an ozone generator, and dry air is taken as an air source. The reactor is filled with metal oxide catalyst, the filling rate is about 50%, the lower end of the reactor is fixed by a microporous partition plate, in order to ensure full contact between the catalyst, ozone and water, the inner wall of the lower half part of the reactor is provided with guide plates which are arranged in a crossed mode and are inserted between the catalysts, ozone bubbles are ensured to rise in an S-shaped curve, and the path of gas and liquid reaction is prolonged, so that the retention time of gas is prolonged, and the longer the gas-liquid contact time is, the more the reaction is facilitated. The bottom of the reactor device is provided with a titanium alloy microporous aerator to generate micro bubbles, so that the gas is uniformly distributed in a smaller volume form, the gas-liquid contact area is increased, and the reaction is more sufficient. One part of the treated water flows out from the bottom end and enters a clean water tank through a multi-media filter, and the other part of the treated water is mixed with the effluent of the clarification tank through a circulating water pump and then enters an ozone catalytic oxidation reactor to participate in circulation. And a spray head is arranged above the rear device, and the reaction liquid circulated upwards is sprayed by water flow or water drops to break up the foam floating on the water surface. The device is provided with an ozone concentration detector for detecting the ozone concentration of the tail gas so as to judge the reaction degree. Ozone tail gas is introduced into a coke quenching circulating water tank from the bottom through a pipeline.
Sludge concentration tank: further reduce the moisture content of the sludge, reduce the volume of the sludge and improve the reuse rate of the wastewater. And the plate-and-frame filter press is used for further removing gap water and capillary water in the sludge, reducing the volume of the sludge and facilitating subsequent treatment. A multi-media filter: more than two media are adopted as filtering layers to further remove suspended or colloidal impurities, micro particles, bacteria, COD, volatile phenol, petroleum and the like in the ozone catalytic oxidation effluent.
When the device is used, the coke quenching wastewater in the coke quenching wastewater pool enters the mixing pool through the lift pump to be coagulated after being contacted with the added PAC coagulant, and the rapid stirrer continuously operates to help the coagulation and avoid alum floc precipitation. Then enters a flocculation tank through a water outlet pipe of the coagulation tank, is mixed with the return sludge of the sedimentation tank and flows into the flocculation tank together, and is fully mixed with the PAM flocculating agent in the flocculation tank through a stirrer. The effluent of the flocculation tank flows into the pre-settling zone with larger area through the weir, and the flow velocity of the water flow is slowed down, so that the breaking of flocculate and the formation of vortex can be avoided, and the effluent enters the sedimentation tank through the partition wall. Most of alum blossom is precipitated below the precipitation tank, the inclined tube above the precipitation tank increases the precipitation area, and residual alum blossom in the supernatant is removed at the position so as to generate qualified effluent. The alum blossom is precipitated and concentrated at the bottom of the sedimentation tank, the concentration zone is divided into two layers, the sludge at the upper layer enters a sludge circulating pump through a sludge circulating pipe for sludge circulation, the growth of the alum blossom is accelerated, and the density of the alum blossom is increased; sludge at the bottom of the sludge hopper is sludge without activity, the sludge is periodically discharged to a sludge concentration tank through a sludge discharge pipe through a sludge discharge pump, supernatant of the sludge concentration tank flows back to a coke quenching wastewater pool, the concentrated sludge is compressed by a plate and frame filter press and then is transported out of a sedimentation tank 7, water is discharged from the upper end of the ozone catalytic oxidation reactor through a pump and is sprayed into the sedimentation tank, and the sludge is sprayed in a water flow or water drop mode through a spray head at the upper end of the reactor and is used for scattering foam floating on the water surface to avoid foam accumulation. The inlet of the ozone generator is connected with the atmosphere, the outlet of the ozone generator is connected with an aerator at the bottom end of the ozone catalytic oxidation reactor through a pipeline, ozone gas is broken up into tiny bubbles by the aerator to enter water, the tiny bubbles rise from bottom to top, the crossed guide plates prolong the path of the reaction between the bubbles and liquid, and the ozone and the reaction liquid fully react under the action of the high-efficiency catalyst. The reaction liquid flows from top to bottom in the reactor device under the action of the circulating water pump, so that the reaction is ensured to be uniformly carried out. One part of the water treated by the device is mixed with the effluent of the clarification tank through a circulating water pump to be continuously circulated, and the other part of the water is discharged, filtered by a plurality of media and then enters a clean water tank. The device is provided with a liquid level meter and an ozone concentration detector, wherein the height of the reaction liquid is controlled to be about 70%, and the ozone concentration in the device can be monitored by the ozone concentration detector to judge the reaction degree. The top end of the device is provided with a pipeline which is led into the bottom of the coke quenching wastewater pool, so that the ozone tail gas generated after reaction is led into the coke quenching wastewater, the residual ozone in the tail gas is quenched by using the raw coke quenching wastewater, and an additional tail gas destruction device is not needed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A coke quenching wastewater ozone catalytic oxidation device comprises a coke quenching wastewater pool (1), a mixing pool (3) and an ozone catalytic oxidation device (13), and is characterized in that the coke quenching wastewater pool (1) is communicated with the mixing pool (3) through a pipeline with a pump, the mixing pool (3) is communicated with an inlet at the bottom end of a flocculation pool (5) through a pipeline with a valve, and a sedimentation pool (7) is communicated with one side of the flocculation pool (5) in an overflow way; the bottom end of the sedimentation tank (7) is provided with a sludge outlet (27), the sludge outlet (27) is communicated with a sludge concentration tank (10) through a pipeline with a sludge discharge pump (9), the bottom of the sludge concentration tank (10) is connected with a plate-and-frame filter press (11) through a pipeline with a pump, the lower part of the sedimentation tank (7) above the sludge outlet is provided with an alum blossom circulation port (28), the alum blossom circulation port (28) is communicated with the inlet end of a sludge circulation pump (8), and the outlet end of the sludge circulation pump (8) is communicated with the lower inlet of the flocculation tank (5) through a pipeline with a valve; the supernatant part of the sedimentation tank (7) is connected with an ozone catalytic oxidation device (13) through a pipeline with a pump; the ozone catalytic oxidation device (13) comprises a circulating water pump (12) and an ozone catalytic oxidation reactor, an aerator (14) is arranged at the bottom end in the ozone catalytic oxidation reactor, a microporous partition plate (18) is arranged above the aerator (14), a plurality of guide plates (16) which are installed in a cross mode are arranged on the side wall of the ozone catalytic oxidation reactor above the microporous partition plate (18), a continuous S-shaped space is formed among the guide plates (16), a high-efficiency catalyst (17) is arranged in the continuous S-shaped space, a spray header (15) is arranged above the high-efficiency catalyst (17) in the ozone catalytic oxidation reactor, and the supernatant part of the sedimentation tank (7) is connected with the spray header (15) through a pipeline with a pump; two water outlets are arranged on the side wall of the ozone catalytic oxidation reactor below the microporous partition plate (18) and are a clean water outlet and a circulation outlet, the circulation outlet is communicated with a water inlet port of the circulation water pump (12) through a pipeline, the circulation water pump (12) is communicated with the spray header (15) through a pipeline with a valve, the clean water outlet is connected with the multi-medium filter (22) through a conduit for water supply, and the water outlet end of the multi-medium filter (22) is communicated with the clean water tank (23).
2. The quenching wastewater ozone catalytic oxidation device of claim 1, characterized in that: the aerator (14) is connected with an ozone generator (20) through a pipeline with a flowmeter (21).
3. The quenching wastewater ozone catalytic oxidation device of claim 1, characterized in that: an ozone concentration detector (24) is arranged at the upper part of the ozone catalytic oxidation reactor.
4. The quenching wastewater ozone catalytic oxidation device of claim 1, characterized in that: and a stirrer (4) is arranged in the mixing pool (3).
5. The quenching wastewater ozone catalytic oxidation device of claim 1, characterized in that: liquid on the upper part of the sludge concentration tank (10) is introduced into an aeration device (25) in the coke quenching wastewater tank (1) through a pipeline with a valve, and wastewater discharged by the plate-and-frame filter press (11) is discharged into the coke quenching wastewater tank (1) through a pipeline with a valve.
6. The quenching wastewater ozone catalytic oxidation device of claim 1, characterized in that: the top of the ozone catalytic oxidation reactor is communicated with the bottom of the coke quenching wastewater pool (1) through a valved ozone tail gas discharge pipe (19).
7. The quenching wastewater ozone catalytic oxidation device of claim 1, characterized in that: the upper part of the sedimentation tank (7) is provided with an inclined tube separation area (6), and the clear liquid part at the upper part of the inclined tube separation area (6) is communicated with a spray header (15) through a pipeline with a pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110445143.3A CN113735304A (en) | 2021-04-24 | 2021-04-24 | Coke quenching waste water ozone catalytic oxidation device |
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| CN212050834U (en) * | 2019-12-27 | 2020-12-01 | 浙江碧源环保科技有限公司 | Coke quenching waste water ozone catalytic oxidation device |
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| KR101835271B1 (en) * | 2017-06-07 | 2018-03-08 | 경상북도 경주시 | Ozone treatment system and, water treatment system including the same |
| CN208648943U (en) * | 2018-04-17 | 2019-03-26 | 深圳市清源宝科技有限公司 | A kind of decomposition apparatus of high temperature quenching waste water |
| CN208327750U (en) * | 2018-05-14 | 2019-01-04 | 北京赛科康仑环保科技有限公司 | One kind being used for coking wastewater deep treatment reclaiming system |
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| CN212050834U (en) * | 2019-12-27 | 2020-12-01 | 浙江碧源环保科技有限公司 | Coke quenching waste water ozone catalytic oxidation device |
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