CN114620855A - Advanced oxidation coupling reactor applied to coal chemical industry wastewater physicochemical section - Google Patents
Advanced oxidation coupling reactor applied to coal chemical industry wastewater physicochemical section Download PDFInfo
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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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)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses an advanced oxidation coupling reactor applied to a coal chemical industry wastewater materialization section, which comprises: the microbubble air flotation device comprises a microbubble air flotation device body, the microbubble air flotation device body is communicated with raw water to be treated, and the microbubble air flotation device body can scrape and remove slag and foam from the raw water and form clear wastewater liquid; the Fenton reaction device is connected with the micro-bubble air floatation device and can carry out solid-liquid separation on the clear liquid of the wastewater; heterogeneous ozone catalytic reaction device is connected with fenton reaction unit, and heterogeneous ozone catalytic reaction device can carry out catalytic reaction with the play water after solid-liquid separation and handle. The invention can remove residual oil, foaming organic matters and particulate matters in the wastewater, has obvious removal effect, and can thoroughly decompose organic pollutants in a short time, so that COD (chemical oxygen demand) stably reaches the standard; meanwhile, the invention also has the advantages of VOCs release reduction, low cost, simple process and the like.
Description
Technical Field
The invention relates to the technical field of wastewater treatment in the coal chemical industry, in particular to an advanced oxidation coupling reactor applied to a coal chemical industry wastewater physicochemical section.
Background
Coal chemical industry uses coal as a raw material to produce and process related chemical products, and waste water is generated in the chemical process. The wastewater is mainly produced from three processes of coal gasification, coal liquefaction and coal coking, and mainly comprises heterocyclic organic pollutants (alkane, olefin, polycyclic aromatic hydrocarbon and the like), inorganic pollutants (ammonia nitrogen, sulfide, fluoride and the like), foaming oily substances (polycyclic aromatic hydrocarbon, long-chain aliphatic hydrocarbon and the like), high-toxicity substances (phenol, cyanide sulfide and the like), various coloring groups and the like. The three processes and the related core production processes are different, the produced wastewater can be classified into the five main pollutants, and the components and the contents of the wastewater have differences; the coal chemical wastewater is characterized in that: large, large discharge amount and large water quality change; high, high concentration, high chroma, high COD and BOD content; toxic, strong biological toxicity, difficult biochemical degradation.
The coal chemical industry wastewater is generally treated by three stages of physical and chemical treatment, biochemical treatment, advanced treatment and the like. In the physicochemical treatment, an oil separation tank (oil substances), an air floatation tank (oil or suspended matters with low density) and a coagulating sedimentation tank (suspended matters and colloid substances) are used for realizing the treatment, and the technology for removing the efficient air floatation and foam-causing substances for effectively separating the oil is lacked; in the biochemical treatment link, organic matters and nitrogen compounds are removed, wherein the biochemical treatment link comprises an anoxic-aerobic denitrification process, an anaerobic-anoxic-aerobic process, a sequencing batch activated sludge process, an oxidation ditch process, a biological moving bed reactor and other processes, and the biochemical treatment effect is unstable due to unstable treatment of strong biological toxic substances in physicochemical treatment; in the aspect of advanced treatment, effective application is realized by means of ozone oxidation, chemical oxidation, a biological aerated filter, activated carbon and the like.
In the aspect of advanced treatment of coal chemical industry wastewater, the ozone oxidation technology is beneficial to reducing COD (40% -50%) of wastewater generated by the coal chemical industry, and can also reduce the chroma and turbidity of the wastewater, so that no secondary pollution is generated in the process. Wherein, the treatment effect on heterocyclic and phenolic organic matters is obvious; heterogeneous catalysis ozone oxidation is to use generated hydroxyl free radicals to carry out oxidative decomposition under the action of a specific catalyst, and the catalyst carrier material mainly comprises titanium dioxide and aluminum oxide.
The problem faced by coal chemical industry wastewater treatment. The existing production facilities generate high concentration, complex components and high treatment difficulty of wastewater, the existing wastewater treatment facilities are difficult to meet the requirements of wastewater treatment, and the wastewater treatment facilities have high updating and updating investment, so that the application of the wastewater treatment technology has difficulty, the investment is low, the construction is fast, and the technology and the product which can make up the defects of the existing wastewater treatment facilities are good technology and product development directions; the actual effect of the existing wastewater pretreatment (deacidification, extraction and deamination) is not obvious, and the difficulty of subsequent physicochemical and biochemical treatment, especially physicochemical treatment, is increased; the conventional process is generally adopted for treatment, the process design is single, the treatment requirement of complex water quality is difficult to meet, the COD and ammonia nitrogen content of effluent exceed the standard, and the zero discharge technology is difficult to realize.
In a word, the coal chemical industry is taken as the traditional industry, the configuration of the environmental protection facility has certain difference with the latest environmental protection emission requirement, the problems of backward pretreatment technology, single treatment technology, large investment, high treatment cost and the like generally exist, and the treatment capability of a physicochemical treatment section and a deep treatment section is enhanced to increase the broad-spectrum applicability technology combination; based on the existing production process and wastewater treatment process, the technology combination of the physicochemical section and the advanced treatment section is further strengthened, the infrastructure scale is small, the modular construction is realized, the operation of the existing system is not influenced, and the technology and the product with low investment intensity and reasonable operation cost are realistic choices in the field of wastewater treatment in the coal chemical industry.
Disclosure of Invention
Therefore, the advanced oxidation coupling reactor which is low in cost and good in treatment effect and is applied to the coal chemical industry wastewater materialization section is needed to solve the technical problems.
An advanced oxidation coupling reactor applied to a coal chemical industry wastewater materialization section comprises:
the microbubble air flotation device comprises a microbubble air flotation device body, the microbubble air flotation device body is communicated with raw water to be treated, and the microbubble air flotation device body can scrape and remove slag and foam from the raw water to form clear wastewater liquid;
the Fenton reaction device is connected with the micro-bubble air floatation device and can be used for carrying out solid-liquid separation on the clear wastewater liquid;
heterogeneous ozone catalytic reaction device, with the fenton reaction device is connected, heterogeneous ozone catalytic reaction device can carry out catalytic reaction with the play water after solid-liquid separation and handle.
In one embodiment, the microbubble air flotation device body comprises:
the device comprises an air flotation reaction area, a water inlet and a water outlet, wherein a feed inlet and an air inlet are formed in the bottom of the air flotation reaction area, raw water enters the air flotation reaction area through the feed inlet, and pressure gas is input into the air flotation reaction area through the air inlet to form micro bubbles;
the scum scraper and the first demister are arranged above the water surface of the air floatation reaction area, and can be used for collecting and treating foam or scum conveyed into a scum collecting area which is communicated with the air floatation reaction area;
the first clear liquid collecting area is communicated with the air floatation reaction area;
and the second clear liquid collecting area is communicated with the first clear liquid collecting area, the clear liquid of the wastewater in the first clear liquid collecting area enters the second clear liquid collecting area in an overflowing mode, and a liquid outlet is formed in the bottom of the second clear liquid collecting area.
In one embodiment, the Fenton reaction device comprises a first lower water collecting area, a membrane filtering area and a first upper water collecting area which are arranged from bottom to top in sequence;
the bottom of the first lower water collecting area is communicated with the liquid outlet through a liquid inlet, the first lower water collecting area is provided with a first medicine inlet and a second medicine inlet, and the first medicine inlet and the second medicine inlet are respectively used for feeding H2O2And a ferrous agent is added to the first lower sump area;
the inside of membrane filtration district is equipped with the film, the film can carry out solid-liquid separation to waste water clear solution, and the play water after the filtration flows out by the delivery port, and unfiltered waste water clear solution flows out through the overflow mouth of first upper portion catchment district, the overflow mouth is connected with the recovery mouth.
In one embodiment, the first upper water collecting region is further connected with a second demister, a first washing water inlet and a first reactor breathing port respectively.
In one embodiment, the bottoms of the air floatation reaction area and the first lower water collecting area are respectively communicated with a first sewage discharge port and a second sewage discharge port.
In one embodiment, the heterogeneous ozone catalytic reaction device comprises: the second lower water collecting area, the catalyst laminated structure and the second upper water collecting area are arranged from bottom to top in sequence;
the second lower water collecting area is connected with the water outlet through the water inlet, and the second lower water collecting area is also connected with the ozone adding port and the H2O2The feeding port is communicated with a sewage draining port;
the catalyst laminated structure comprises a grid plate, catalyst layers and water gaps, wherein the catalyst layers are stacked on the grid plate;
the second upper water collecting area is connected with a second cleaning water inlet, a third demister, an overflow port and a second reactor breathing port;
the water collecting area at the upper part of the second is provided with a circulating water inlet, the water collecting area at the lower part of the second is provided with a circulating water outlet, and the circulating water inlet is connected with the circulating water outlet through a circulating loop.
In one embodiment, a micropore aeration device is arranged in the ozone adding port, the micropore size of the micropore aeration device is 3-15 μm, and the ozone concentration of the micropore aeration device is 50-120 mg/L.
In one embodiment, the catalyst layer comprises an ozone heterogeneous catalyst which is a solid particle material of alumina loaded with Fe, Si, Cu, Ni, Mn single element or combined elements, and the particle size of the solid particle material is 1-5 mm.
The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section removes residual oils, foaming organic matters and particles in wastewater through the micro-bubble air flotation device, has obvious removal effect, and can completely decompose organic pollutants in a short time through the Fenton reaction device and the heterogeneous ozone catalytic reaction device, so that COD (chemical oxygen demand) is stable and reaches the standard; meanwhile, the invention also has the advantages of VOCs release reduction, low cost, simple process and the like.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments 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 it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an advanced oxidation coupling reactor applied to a coal chemical industry wastewater materialization section.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the present invention provides an advanced oxidation coupling reactor applied to a coal chemical wastewater materialization section, including:
the microbubble air flotation device comprises a microbubble air flotation device body, the microbubble air flotation device body is communicated with raw water (wastewater) to be treated, and the microbubble air flotation device body can scrape and remove slag and foam from the raw water to form wastewater clear liquid;
the Fenton reaction device is connected with the micro-bubble air floatation device and can be used for carrying out solid-liquid separation on the clear wastewater liquid;
heterogeneous ozone catalytic reaction device, with the fenton reaction device is connected, heterogeneous ozone catalytic reaction device can carry out catalytic reaction with the play water after solid-liquid separation and handle.
The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section removes residual oils, foaming organic matters and particles in wastewater through the micro-bubble air flotation device, has obvious removal effect, and can completely decompose organic pollutants in a short time through the Fenton reaction device and the heterogeneous ozone catalytic reaction device, so that COD (chemical oxygen demand) is stable and reaches the standard; meanwhile, the invention also has the advantages of VOCs release reduction, low cost, simple process and the like.
In an embodiment of the present invention, the microbubble air flotation device body includes:
the device comprises an air flotation reaction area 1, wherein a feed inlet 6 and an air inlet 7 are formed in the bottom of the air flotation reaction area 1, raw water enters the air flotation reaction area 1 through the feed inlet 6, and pressure gas is input into the air flotation reaction area 1 through the air inlet 7 to form micro bubbles;
the scum scraper 3 and the first demister 8 are arranged above the water surface of the air floatation reaction area 1, the scum scraper 3 and the first demister 8 can convey foam or scum to a scum collecting area 2 for collection and treatment, and the scum collecting area 2 is communicated with the air floatation reaction area 1; in this embodiment, the first demister 8 may be a suction cup or the like, and the equivalent suction capacity of the suction cup is 1.5 to 3 times of the ventilation capacity of the gas. The slag scraper 3 may be a rotating deflector rod or the like.
The first clear liquid collecting area 4 is communicated with the air floatation reaction area 1;
and the second clear liquid collecting area 5 is communicated with the first clear liquid collecting area 4, the clear liquid of the wastewater in the first clear liquid collecting area 4 enters the second clear liquid collecting area 5 in an overflow mode, and a liquid outlet 9 is formed in the bottom of the second clear liquid collecting area 5. Therefore, impurities such as particles can be continuously precipitated at the middle part and the bottom part of the first clear liquid collecting area 4, and the purity of the waste water clear liquid is improved.
In an embodiment of the present invention, the fenton reaction device includes a first lower water collecting zone 12, a membrane filtering zone 13 and a first upper water collecting zone 14, which are sequentially arranged from bottom to top;
the bottom of the first lower water collecting area 12 is communicated with the liquid outlet 9 through a liquid inlet 11, the first lower water collecting area 12 is provided with a first medicine inlet 16 and a second medicine inlet 17, and the first medicine inlet 16 and the second medicine inlet 17 are respectively used for feeding H2O2And a ferrous agent is added to the first lower sump area 12;
the membrane filtration zone 13 is internally provided with a soft sheet membrane which can carry out solid-liquid separation on the waste water clear liquid, the filtered effluent flows out from the water outlet 21, the unfiltered waste water clear liquid flows out from the overflow port 15 of the first upper water collection zone 14, and the overflow port 15 is connected with the recovery port 23. The recovery port 23 can recover the clear wastewater and recycle the clear wastewater.
In an embodiment of the present invention, the first upper water collecting region 14 is further connected to a second demister 18, a first washing water inlet 19 and a first reactor breathing port 20, respectively. In this embodiment, the second demister 18 can remove foam or scum from the wastewater supernatant in the upper collection area 14; the cleaning water inlet 19 can be used for receiving clean water to clean the interior of the Fenton reaction device; the reactor breathing port 20 is used to adjust the internal gas pressure of the fenton reaction apparatus.
In one embodiment of the present invention, the bottoms of the air flotation reaction area 1 and the first lower water collecting region 12 are respectively communicated with the first sewage draining outlet 10 and the second sewage draining outlet 22. The first and second soil discharge openings 10 and 22 can discharge granular or solid impurities.
In one embodiment of the present invention, the heterogeneous ozone catalytic reaction apparatus includes: a second lower water collection zone 25, a catalyst laminated structure 26 and a second upper water collection zone 27 which are arranged in sequence from bottom to top;
the second lower water collecting area 25 is connected with the water outlet 21 through the water inlet 24, and the second lower water collecting area 25 is also connected with the ozone adding port 31, H2O2 The feeding port 32 is communicated with a sewage discharge port 37; optionally, a micro-pore aeration device is installed in the ozone inlet 31, the micro-pore aeration device has a micro-pore size of 3 μm to 15 μm, ozone enters the second lower water collecting zone 25 through the micro-pores for aeration, and the ozone concentration of the micro-pore aeration device is 50 mg/L to 120 mg/L.
A catalyst laminated structure 26 comprising a grid plate, catalyst layers (300-500mm thick) and water gaps (10-100mm thick), each catalyst layer being stacked on the grid plate (0.5-3 mm in pore diameter); in this embodiment, a special reactor cleaning system is formed by the catalyst laminated structure 26(3-5 layers are separately stacked on the grid plate), the micro-porous aeration structure and the pressurized air column in the body cavity, so as to form a dynamic self-cleaning function of the reactor, and keep the function of the catalyst material stable. The catalyst layer comprises an ozone heterogeneous catalyst, the ozone heterogeneous catalyst is a solid particle material of alumina-supported Fe, Si, Cu, Ni and Mn single elements or combined elements, and the particle size of the ozone heterogeneous catalyst is 1-5 mm.
The second upper water collecting area 27 is connected with a second washing water inlet 34, a third demister 33 and a second reactor breathing port 35;
the second upper water collecting area 27 is provided with a circulating water inlet 28, the second lower water collecting area 25 is provided with a circulating water outlet 30, and the circulating water inlet 28 is connected with the circulating water outlet 30 through a circulating loop 29. In this embodiment, the flow rate of the circulating water in the circulation circuit 29 is 1.5 to 10 times of the flow rate of the raw water.
The main process flow of the invention is as follows:
the coal chemical industry wastewater treated by the pretreatment section enters an air floatation reaction area 1 of a micro-bubble air floatation device from a feed inlet 6, air with certain pressure enters the air floatation reaction area 1 from an air inlet 7 in a micro-bubble mode, and oil and foaming organic matters enter a scum collecting area 2 in a scum or scum form under the combined action of a scum scraper 3 and a first demister 8 above the water surface of the air floatation reaction area 1 to be collected and treated additionally; the air flotation reaction area 1 is communicated with the first clear liquid collecting area 4 and the second clear liquid collecting area 5, and water after oil removal and foam removal enters the second clear liquid collecting area 5 in the first clear liquid collecting area 4 in an overflowing mode.
Effluent flows out through the liquid outlet 9 and enters the first lower water collecting area 12 through the liquid inlet 11 of the Fenton reaction device; h2O2And ferrous chemicals are added from the first chemical inlet 16 and the second chemical inlet 17 respectively, effluent after the Fenton reaction flows out from the water outlet 21 after solid-liquid separation by a film, and enters the second lower water collecting area 25 from the water inlet 24 of the heterogeneous ozone catalytic reaction device.
The wastewater flows upwards through the catalyst laminated structure 26 into the second upper water collecting area 27, part of the treated water overflows through the overflow port 36 and flows out from the circulating water inlet 28 and is pumped back to the heterogeneous ozone catalytic reaction device from the circulating water inlet 30 by the circulating loop 29.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides an advanced oxidation coupling reactor who is applied to coal chemical industry waste water materialization section which characterized in that includes:
the microbubble air flotation device comprises a microbubble air flotation device body, the microbubble air flotation device body is communicated with raw water to be treated, and the microbubble air flotation device body can scrape and remove slag and foam from the raw water to form clear wastewater liquid;
the Fenton reaction device is connected with the micro-bubble air floatation device and can be used for carrying out solid-liquid separation on the clear wastewater liquid;
heterogeneous ozone catalytic reaction device, with the fenton reaction device is connected, heterogeneous ozone catalytic reaction device can carry out catalytic reaction with the play water after solid-liquid separation and handle.
2. The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section as claimed in claim 1, wherein the microbubble air flotation device body comprises:
the device comprises an air flotation reaction area (1), wherein a feed inlet (6) and an air inlet (7) are formed in the bottom of the air flotation reaction area (1), raw water enters the air flotation reaction area (1) through the feed inlet (6), and pressure gas is input into the air flotation reaction area (1) through the air inlet (7) to form micro bubbles;
the scum scraper (3) and the first demister (8) are arranged above the water surface of the air floatation reaction area (1), the scum scraper (3) and the first demister (8) can convey foam or scum to a scum collecting area (2) for collection and treatment, and the scum collecting area (2) is communicated with the air floatation reaction area (1);
the first clear liquid collecting area (4) is communicated with the air floatation reaction area (1);
and the second clear liquid collecting area (5) is communicated with the first clear liquid collecting area (4), the clear liquid of the wastewater in the first clear liquid collecting area (4) enters the second clear liquid collecting area (5) in an overflowing manner, and a liquid outlet (9) is formed in the bottom of the second clear liquid collecting area (5).
3. The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section is characterized in that the Fenton reaction device comprises a first lower water collecting area (12), a membrane filtering area (13) and a first upper water collecting area (14) which are arranged from bottom to top in sequence;
the bottom of the first lower water collecting area (12) is communicated with the liquid outlet (9) through the liquid inlet (11), the first lower water collecting area (12) is provided with a first medicine inlet (16) and a second medicine inlet (17), and the first medicine inlet (16) and the second medicine inlet (17) are respectively used for feeding H2O2And a ferrous agent is added to the first lower water collection area (12);
the inside of membrane filtration district (13) is equipped with the film, the film can carry out solid-liquid separation to waste water clear solution, and the play water after the filtration flows out by delivery port (21), and unfiltered waste water clear solution flows out through overflow mouth (15) of first upper portion catchment area (14), overflow mouth (15) are connected with recovery mouth (23).
4. The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section is characterized in that the first upper water collecting area (14) is also respectively connected with a second demister (18), a first cleaning water inlet (19) and a first reactor breathing port (20).
5. The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section is characterized in that the bottoms of the air flotation reaction area (1) and the first lower water collecting area (12) are respectively communicated with a first sewage discharge port (10) and a second sewage discharge port (22).
6. The advanced oxidation coupling reactor applied to the wastewater materialization section in the coal chemical industry as set forth in claim 3, 4 or 5, wherein the heterogeneous ozone catalytic reaction device comprises: a second lower water collecting area (25), a catalyst laminated structure (26) and a second upper water collecting area (27) which are arranged from bottom to top in sequence;
the second lower water collecting area (25) is connected with the water outlet (21) through the water inlet (24), and the second lower water collecting area (25) is also connected with the ozone adding port (31) and the H2O2The feeding port (32) is communicated with a sewage draining outlet (37);
a catalyst stack (26) comprising a grid plate, catalyst layers and water voids, each catalyst layer being stacked on the grid plate;
the second upper water collecting area (27) is connected with a second cleaning water inlet (34), a third demister (33), an overflow port (36) and a second reactor breathing port (35);
the water collecting area (27) at the upper part of the second is provided with a circulating water inlet (28), the water collecting area (25) at the lower part of the second is provided with a circulating water outlet (30), and the circulating water inlet (28) is connected with the circulating water outlet (30) through a circulating loop (29).
7. The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section, according to claim 6, is characterized in that a micropore aeration device is installed in the ozone adding port (31), the micropore size of the micropore aeration device is 3-15 μm, and the ozone concentration of the micropore aeration device is 50-120 mg/L.
8. The advanced oxidation coupling reactor applied to the coal chemical industry wastewater materialization section is characterized in that the catalyst layer comprises an ozone heterogeneous catalyst, the ozone heterogeneous catalyst is a solid particle material of alumina loaded with Fe, Si, Cu, Ni and Mn single elements or combined elements, and the particle size of the solid particle material is 1-5 mm.
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Cited By (1)
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| CN116768427A (en) * | 2023-08-15 | 2023-09-19 | 北京百灵天地环保科技股份有限公司 | Advanced treatment process for industrial wastewater |
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