CN213327090U - 2, 6-dichloro p-nitroaniline effluent treatment plant - Google Patents
2, 6-dichloro p-nitroaniline effluent treatment plant Download PDFInfo
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- CN213327090U CN213327090U CN202022116974.XU CN202022116974U CN213327090U CN 213327090 U CN213327090 U CN 213327090U CN 202022116974 U CN202022116974 U CN 202022116974U CN 213327090 U CN213327090 U CN 213327090U
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Abstract
The utility model discloses a 2, 6-dichloro p-nitroaniline effluent treatment plant, including consecutive high-efficient neutralization row tar device, ion air supporting deoiling device, the fragrant fluidized bed combined reactor of iron-carbon. The novel system realizes rapid and sufficient neutralization by using the 'high-efficiency jet flow mixing nozzle'; continuously floating and removing tar in the wastewater by using ion air flotation; the FBR-Fenton fluidized bed technology is utilized to further reduce COD in the wastewater and generate iron sludge, the stability and reliability of the water quality of treated effluent are comprehensively realized, the efficiency is high, the energy consumption is low, the filtered water energy is discharged up to the standard or recycled according to the requirement, the occupied area is small, and the method is more environment-friendly and economical.
Description
The technical field is as follows:
the utility model belongs to the technical field of waste water treatment, concretely relates to 2, 6-dichloro p-nitroaniline effluent treatment plant.
Background art:
the 2, 6-dichloro-p-nitroaniline wastewater is characterized by strong acidity (the content of hydrochloric acid is 6-9%), more byproducts (containing trichloro-p-nitroaniline, tetrachloro-p-nitroaniline and the like), neutral or alkaline tar precipitation, and serious influence on the use of a subsequent treatment unit.
The process flow adopted for treating the waste water at present mainly comprises the following steps: the wastewater containing nitroaniline and 2, 6-dichloroaniline is subjected to neutralization, oil removal, tar discharge, SP iron-carbon treatment, three-effect treatment, ammonia stripping and biochemical treatment. The technological process has long running time, low efficiency, large occupied area, high running efficiency and secondary pollution.
Therefore, the method and the system for treating the wastewater containing the 2, 6-dichloro-p-nitroaniline in the prior art are time-consuming, low in efficiency and high in production cost. Therefore, a treatment device and a treatment system for wastewater containing 2, 6-dichloro-p-nitroaniline, which have high treatment efficiency and low cost, are needed.
The utility model has the following contents:
the utility model aims at overcoming the defects existing in the prior art and providing a 2, 6-dichloro-p-nitroaniline wastewater treatment device to solve the problems of low wastewater efficiency and high cost of the treatment of 2, 6-dichloro-p-nitroaniline-containing wastewater in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a 2, 6-dichloro p-nitroaniline effluent treatment plant, includes the high-efficient neutralization row tar processing apparatus that links to each other in proper order by the pipeline, and ion vapour floats deoiling processing apparatus, and iron-carbon fenton fluidized bed and neutralization-gas dissipation-flocculation device, wherein:
the efficient neutralization and tar discharge treatment device comprises a neutralization tank, wherein the neutralization tank is provided with a 2, 6-dichloro-p-nitroaniline water inlet, the neutralization tank is connected with an alkali liquor input unit through an efficient jet flow injection neutralizer, the bottom of the neutralization tank is provided with an efficient jet flow nozzle group, and the efficient jet flow injection neutralizer is communicated with the efficient jet flow nozzle group;
the iron-carbon Fenton fluidized bed sequentially comprises an iron-carbon area, a water distribution area and a fluidized filler area from bottom to top, wherein a water inlet, a water return port and a water outlet are formed above the fluidized filler area;
the water distribution area comprises a jet flow water distributor, a first backwater inlet is arranged on the side of the jet flow water distributor, and a second backwater inlet is arranged below the jet flow water distributor;
the side of the water distribution area is connected with a dosing system which comprises a H2O2Dosing device and FeSO4A chemical adding device, H2O2The dosing device is connected with the lateral inlet of the jet water distributor through a high-efficiency jet injection neutralizer, and the FeSO4The dosing device is connected with an inlet below the jet flow water replenishing device through a high-efficiency jet flow jet neutralizer; said H2O2The dosing device is connected with the water return port through a reflux pump, and the FeSO4The dosing device is connected with the water inlet through a reflux pump;
said H2O2The chemical adding device is connected with a water return port above the fluidized packing area, and the FeSO4The dosing device is connected with the water inlet;
the iron-carbon Fenton fluidized bed outlet connect gradually Fenton neutralization pond, Fenton gas dispersing pool and Fenton flocculation basin, Fenton neutralization pond, Fenton gas dispersing pool and Fenton flocculation basin form neutralization-gas dispersing-flocculation device.
The high-efficiency jet flow jet neutralizer comprises a nozzle inlet 1, a nozzle inlet 2 and a nozzle outlet 3, wherein the nozzle inlet 1 is used for adding a medicament, and the nozzle inlet 2 is used for adding wastewater.
The ion vapor flotation oil removal treatment device is connected with the iron-carbon area through a high-efficiency jet flow jet neutralizer;
the pipeline of the alkali liquor input unit relates to a pressure gauge.
And a pH meter and a slag scraper are respectively arranged above the neutralization tank.
An inclined plate clear water area is arranged above the fluidization filling area.
And a gas distribution pipeline is arranged at the bottom of the iron-carbon area.
And a gas distribution pipeline is arranged at the bottom of the Fenton gas dispersion pool.
The Fenton flocculation tank is provided with a water outlet.
In the operation process of the device, in order to ensure that the wastewater enters the treatment stage after being regulated by the load as stable as possible, the wastewater sources of all the devices are clearly investigated, and the impact resistance of the system is fully considered and reserved during the system design.
In the device, a high-efficiency jet flow jet neutralizer is adopted to be communicated with a high-efficiency jet flow nozzle group in the neutralization tank. The strong stirring action of the jet nozzle group is utilized to fully mix and stir the 2, 6-dichloro-p-nitroaniline strong acid wastewater and the alkali liquor, so as to achieve the aim of quickly and uniformly adjusting the neutralization, and the bright point and the characteristic of the jet nozzle group are energy-saving, environment-friendly, high-efficiency, simple in structure, free of maintenance and long in service life. High-efficiency jet flow nozzle group of high-efficiency jet flow neutralizer
Compared with the traditional mechanical stirring, the high-efficiency jet nozzle group adopted in the device has the advantages that liquid in the pool is quickly and uniformly mixed during working, and the probability of stirring dead angles is greatly reduced; the equipment installation workload is small, and the cost is low; the potential safety hazard is low; the neutralization system is simple to operate, flexible to use, low in running cost and free of frequent maintenance.
The high-efficiency jet nozzle group adopted in the device forms a micro-bubble manufacturing system in the pool, so that two phases of water molecules and air molecules in the gas dissolving water move and separate at high speed in different directions within less than 1 microsecond, and are instantaneously gathered to form uniform micro-bubbles with diameters of 3-7 mu m and carrying charges, thereby increasing the density of the bubbles in a geometric series quantity under the condition of the same gas dissolving quantity. The integrated charged bubbles change the surface tension of water, adsorb colored groups and partial hydrophilic colloid, are a revolutionary breakthrough in purification efficiency, and simultaneously, the addition amount of PAC and PAM is greatly reduced or is not required.
Adding reagent into the iron-carbon Fenton fluidized bed reactor to realize Fenton reaction, and realizing fluidization by using a reflux pump.
The FBR-Fenton fluidized bed process utilizes Fenton reagent which is the combination of ferrous ions and hydrogen peroxide, and Fe2+And H2O2The intermediate reaction is fast, OH free radicals are generated, the oxidizing capability of OH is strong, is second to F2, and Fe is used when ferric iron coexists3+And H2O2Slow generation of Fe2+，Fe2+Then with H2O2The OH reacts with the organic RH to cause the carbon chain fission of the OH and the final oxidation to CO2And H2O, thereby greatly reducing the CODcr of the wastewater. While Fe2+As a catalyst, may be finally O2Oxidation to Fe3+At a certain pH, there may be Fe (OH)3Colloid appears, which has flocculation function and can greatly reduce suspended matters in water.
The bottom of the neutralization tank and the air dispersing tank is provided with an air distribution pipeline for aeration and stirring. And after aeration, sewage enters a flocculation tank, supernatant is discharged in an overflowing manner, and sludge at the bottom is discharged by a slurry pump.
The utility model has the advantages that:
the utility model realizes rapid and sufficient neutralization by using the high-efficiency jet mixing nozzle; continuously floating and removing tar in the wastewater by using ion air flotation; the FBR-Fenton fluidized bed technology is utilized to further reduce COD in the wastewater and generate iron sludge, and the method has an obvious inhibiting effect on the hydrogen sulfide peculiar smell of a sewage treatment plant. The method has the characteristics of stable treatment effect, high treatment efficiency, low production and operation cost, simple and convenient operation, energy conservation and emission reduction.
Description of the drawings:
FIG. 1 is a schematic view of a 2, 6-dichloro-p-nitroaniline wastewater treatment plant of example 1 of the present invention;
FIG. 2 is a circuit diagram of an operation process of a 2, 6-dichloro-p-nitroaniline wastewater treatment device in embodiment 1 of the present invention;
FIG. 3 is a schematic view of the structure of a high-efficiency jet neutralizer of the 2, 6-dichloro-p-nitroaniline wastewater treatment device in embodiment 1 of the invention;
fig. 4 is a tank body layout diagram of the 2, 6-dichloro-p-nitroaniline wastewater treatment device in embodiment 1 of the utility model, wherein:
1. pressure gauge, 2, PH meter, 3, slag scraper, 4, stirrer, 5, liquid level meter, 6, water pump, 7, high-efficiency jet flow nozzle group, 8, high-efficiency neutralization tank, 9, pneumatic control tank, 10, dissolved air pump, 11, iron carbon Fenton fluidized bed, 12, Fenton neutralization tank, 13, Fenton dispersed air tank, 14, Fenton flocculation tank, 15, air distribution pipeline, 16, high-efficiency jet flow injection neutralizer, 121, water inlet, 122, water return port, 123, first water return inlet, 124, second water return inlet, 125, iron carbon water inlet, 126, bottom air distribution pipeline, 127, iron carbon zone, 128, water distribution zone, 128-1 jet flow device, 129, fluidized packing zone, 1210, clean water zone, 1211, water outlet, 171, nozzle inlet 1, 172, nozzle inlet 2, 173 and nozzle outlet.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to examples.
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
The utility model provides a 2, 6-dichloro p-nitroaniline effluent treatment plant, its schematic structure diagram is shown in figure 1, includes the high-efficient neutralization row tar processing apparatus, ionic vapor floating oil processing apparatus, iron-carbon fenton fluidized bed 11 and neutralization-gas diffusion-flocculation device that link to each other in proper order by the pipeline, wherein:
the high-efficiency neutralization and tar discharge treatment device comprises a high-efficiency neutralization tank 8, wherein the high-efficiency neutralization tank 8 is provided with a 2, 6-dichloro-p-nitroaniline water inlet, the high-efficiency neutralization tank 8 is connected with an alkali liquor input unit through a high-efficiency jet injection neutralizer 16, the structural schematic diagram of the high-efficiency jet injection neutralizer 16 is shown in figure 3, the bottom of the high-efficiency neutralization tank 8 is provided with a high-efficiency jet nozzle group 7, the high-efficiency jet injection neutralizer 16 is communicated with the high-efficiency jet nozzle group 7, and a water pump 6 is arranged on a connecting pipeline of the high-efficiency jet injection neutralizer 16 and the high-efficiency jet nozzle group 7;
the iron-carbon Fenton fluidized bed 11 sequentially comprises an iron-carbon zone 127, a water distribution zone 128 and a fluidized packing zone 129 from bottom to top, wherein a water inlet 121, a water return port 122 and a water outlet 1211 are arranged above the fluidized packing zone;
the water distribution area 128 comprises a jet flow water distributor 128-1, a first return water inlet 123 is arranged on the side of the jet flow water distributor 128-1, and a second return water inlet 124 is arranged below the jet flow water distributor 128-1;
the side of the water distribution area 128 is connected with a dosing system which comprises a H2O2Adding chemicals and FeSO4Adding chemicals, said H2O2The dosing and side inlet of the jet water distributor are connected by a high-efficiency jet injection neutralizer 16, and the FeSO4The lower inlet of the dosing and jet flow water replenishing device is connected with a high-efficiency jet flow jet neutralizer 16; said H2O2The medicine is added and is connected with the water return port 122 through a reflux pump, and the FeSO4The medicine is added and connected with the water inlet 121 through a reflux pump;
said H2O2The chemical adding is connected with a water return port 122 above the fluidized filler area, and the FeSO4The medicine adding port is connected with the water inlet 121;
11 outlets of iron carbon Fenton fluidized bed connect gradually Fenton neutralization pond 12, Fenton gas dispersing pool 13 and Fenton flocculation basin 14, Fenton neutralization pond 12, Fenton gas dispersing pool 13 and Fenton flocculation basin 14 form neutralization-gas dispersing-flocculation device.
The high efficiency jet spray neutralizer 16 includes a 171 nozzle inlet 1, a 172 nozzle inlet 2 and a 173 nozzle outlet 3, wherein the nozzle inlet 1 is used for adding chemicals and the nozzle inlet 2 is used for adding wastewater.
The ion vapor flotation oil removal treatment device comprises a gas control pool 9, the bottom of the gas control pool 9 is connected with a dissolved air pump 10, the ion vapor flotation oil removal treatment device is connected with an iron-carbon area 127 through a high-efficiency jet flow jet neutralizer, and the iron-carbon area is provided with an iron-carbon water inlet 125;
and a pressure gauge 1 is arranged on the alkali liquor input unit pipeline.
And a pH meter 2 and a slag scraper 3 are respectively arranged above the high-efficiency neutralization tank 8.
An inclined plate clear water area 1210 is arranged above the fluidized packing area 129.
The bottom of the iron-carbon area 127 is provided with a bottom gas distribution pipeline 126.
And a gas distribution pipeline 15 is arranged at the bottom of the Fenton gas dispersion pool 13.
The Fenton flocculation tank 14 is provided with a water outlet.
As shown in figure 3, the high-efficiency jet flow jet neutralizer structure diagram of the utility model shows the adding mode of the medicament correspondingly, and the medicament and the waste water are added from two inlets to realize preliminary mixing and then are discharged.
As shown in FIG. 4, it is a layout diagram of the wastewater treatment tank of the present invention, and has the characteristics of compact structure and small floor area.
The device is used for treating 2, 6-dichloro-p-nitroaniline wastewater, a process flow diagram of the device is shown in figure 2, a high-efficiency neutralization process flow is that raw water enters a high-efficiency neutralization tank from the top of the tank, sewage in the tank is pumped out from the bottom of the tank body by an injection pump and is sent to a high-efficiency jet flow injection neutralizer, alkali liquor is sent to a suction inlet of the high-efficiency jet flow injection neutralizer by an alkali liquor pump, acid-alkali solution is fully mixed in the high-efficiency jet flow injection neutralizer and then is sent to a high-efficiency jet flow nozzle group through a pipeline, after the high-efficiency jet flow nozzle group is sprayed out, neutralization reaction is carried out in the tank again, circulation of the wastewater in the neutralization tank is realized, and the neutralized wastewater flows to an air flotation.
The air flotation process flow is that sewage from high-efficiency neutralization enters an air flotation machine coagulation tank from the top of equipment to be mixed with PAC or demulsifier, the mixed sewage flows into an air flotation machine flocculation area from the bottom of a first partition plate, is stirred by a stirrer 4 in the flocculation area to carry out flocculation reaction, is stirred by aeration, is fully mixed and overflows from the upper part of a second partition plate to enter the air flotation area after reaction, a liquid level meter 5 is arranged in the air flotation area, and the sewage is pumped out by a dissolved air pump in the air flotation area of the air flotation machine and is mixed with air and then is sent into a dissolved air water storage area through a dissolved air tank. Returning to the air floatation area through the pore passage of the third partition plate to realize circulation and continuous air floatation in the sewage re-air floatation tank, continuously scraping floating oil by a residue scraper during air floatation, and discharging the treated sewage into a next-stage process water tank through a pipeline
The sewage after air floatation enters a sedimentation tank through a pipeline, then enters a pneumatic control tank through an overflow pipeline, and then is conveyed to an iron-carbon Fenton fluidized reactor through a lifting pump. The sewage is lifted to the water inlet of the iron-carbon Fenton fluidized reactor through the lift pump, when the water level reaches the return water outlet, the return water system works, the return water is divided into two parts, one part is added with a hydrogen peroxide solution, the other part is added with a ferrous sulfate solution and is mixed through the water distributor, efficient filler in the iron-carbon Fenton fluidized reactor generates a fluidization effect under the action of the return pump, the contact area is increased, and meanwhile, iron-carbon treatment is carried out on the sewage in an iron-carbon filler area at the lower part of the reactor. The treated sewage enters the next-stage treatment device through the water outlet.
After sewage is handled in iron-carbon Fenton fluidized reactor and is accomplished, the pipeline is sent to Fenton neutralization pond, carry out the aeration stirring in the Fenton neutralization pond, sewage after the neutralization flows to the Fenton gas dispersing pool through the pipeline, get into the Fenton flocculation basin after the aeration gas dispersing, throw PAM in the Fenton flocculation basin, carry out flocculation reaction and then get into the Fenton sedimentation tank and deposit, the supernatant is through the pipeline discharge, discharge up to standard, bottom mud is accomodate by the sediment stuff pump and is told sludge conditioning, the mud after the conditioning is sent the processing station after the filter-pressing.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a 2, 6-dichloro p-nitroaniline effluent treatment plant which characterized in that, includes the high-efficient neutralization row tar processing apparatus that links to each other in proper order by the pipeline, and ion vapour floats oil processing apparatus, and iron-carbon fenton fluidized bed and neutralization-gas diffusion-flocculation device, wherein:
the efficient neutralization and tar discharge treatment device comprises a neutralization tank, wherein the neutralization tank is provided with a 2, 6-dichloro-p-nitroaniline water inlet, the neutralization tank is connected with an alkali liquor input unit through an efficient jet flow injection neutralizer, the bottom of the neutralization tank is provided with an efficient jet flow nozzle group, and the efficient jet flow injection neutralizer is communicated with the efficient jet flow nozzle group;
the iron-carbon Fenton fluidized bed sequentially comprises an iron-carbon area, a water distribution area and a fluidized filler area from bottom to top, wherein a water inlet, a water return port and a water outlet are formed above the fluidized filler area;
the water distribution area comprises a jet flow water distributor, a first backwater inlet is arranged on the side of the jet flow water distributor, and a second backwater inlet is arranged below the jet flow water distributor;
the side of the water distribution area is connected with a dosing system which comprises a H2O2Adding chemicals and FeSO4Adding chemicals, said H2O2The dosing and the lateral inlet of the jet water distributor are connected by a high-efficiency jet injection neutralizer, and the FeSO4The dosing and inlet below the jet water distributor is connected with the efficient jet injection neutralizer; said H2O2The chemical adding is connected with a water return port through a reflux pump, and the FeSO4The medicine is added and connected with the water inlet through a reflux pump; said H2O2The chemical adding is connected with a water return port above the fluidized filling area, and the FeSO4The dosing device is connected with the water inlet;
the iron-carbon Fenton fluidized bed outlet connect gradually Fenton neutralization pond, Fenton gas dispersing pool and Fenton flocculation basin, Fenton neutralization pond, Fenton gas dispersing pool and Fenton flocculation basin form neutralization-gas dispersing-flocculation device.
2. The apparatus for treating 2, 6-dichloro-p-nitroaniline wastewater as claimed in claim 1, wherein the ion flotation oil-removing treatment apparatus is connected with the iron-carbon zone through a high-efficiency jet neutralizer.
3. The apparatus for treating 2, 6-dichloro-p-nitroaniline wastewater as claimed in claim 1, wherein a pressure gauge is arranged on the pipeline of the alkali liquor input unit, and a pH meter and a slag scraper are respectively arranged above the neutralization tank.
4. The 2, 6-dichloro-p-nitroaniline wastewater treatment device according to claim 1, characterized in that an inclined plate clear water zone is arranged above the fluidized packing zone, and a gas distribution pipeline is arranged at the bottom of the iron-carbon zone.
5. The 2, 6-dichloro-p-nitroaniline wastewater treatment device according to claim 1, wherein a gas distribution pipeline is arranged at the bottom of the Fenton gas dispersion tank, and the Fenton flocculation tank is provided with a water outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022116974.XU CN213327090U (en) | 2020-09-24 | 2020-09-24 | 2, 6-dichloro p-nitroaniline effluent treatment plant |
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| CN202022116974.XU CN213327090U (en) | 2020-09-24 | 2020-09-24 | 2, 6-dichloro p-nitroaniline effluent treatment plant |
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| CN213327090U true CN213327090U (en) | 2021-06-01 |
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| CN202022116974.XU Active CN213327090U (en) | 2020-09-24 | 2020-09-24 | 2, 6-dichloro p-nitroaniline effluent treatment plant |
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