CN109336315A - A kind of hybrid coking waste water treatment method and device - Google Patents
A kind of hybrid coking waste water treatment method and device Download PDFInfo
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- CN109336315A CN109336315A CN201811494736.3A CN201811494736A CN109336315A CN 109336315 A CN109336315 A CN 109336315A CN 201811494736 A CN201811494736 A CN 201811494736A CN 109336315 A CN109336315 A CN 109336315A
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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Abstract
The present invention relates to a kind of hybrid coking waste water treatment method and devices, coking wastewater enters in Fenton oxidation reactor, oxidation reaction is carried out under the action of Fenton reagent, subsequently enter coagulating sedimentation reactor, dosing coagulant and flocculation aid remove the precipitating after oxidation, are discharged after sludge settling, supernatant enters photocatalytic oxidation reactor, photocatalysis, last coking wastewater qualified discharge are entered to coking wastewater under the effect of the catalyst.Coking waste water treatment process of the invention, using effect is good, can effectively reduce COD, ammonia nitrogen, other organic pollutants etc. in coking wastewater, and easy to operate, is easy to control, high treating effect, reaction efficiency height, has stronger feasibility.
Description
Technical field
The present invention relates to Technologies of Coke Plant Wastewater Treatment field more particularly to a kind of hybrid coking waste water treatment methods and dress
It sets.
Background technique
With the development of society and the growth of population, coking wastewater is a kind of high COD, the height generated in process of coking
Ammonia nitrogen, organic phenol wastewater difficult to degrade, it is extremely serious to the pollution of environment if direct emission.
The existing Technologies of Coke Plant Wastewater Treatment in China mainly uses traditional A/O or A/A/O biological treatment and coagulation
The successive depths facture such as precipitating, activated carbon adsorption, oxidizing process.It is all kinds of research shows that even if biological treatment plays to greatest extent
Effect, it is also difficult to realize the stably reaching standard discharge of coking wastewater, therefore effective subsequent processing technology is the pass of Treatment of Coking Effluent
Key.
Currently, mainly using advanced oxidation processes for the advanced treating of coking wastewater.High-level oxidation technology specifically includes that
Fenton oxidation method, wet oxidation process, ultrasonic technology, photocatalytic oxidation, supercritical Water Oxidation Technology, plasma technique
Deng.Wherein, Fenton oxidation method has many advantages, such as easy to operate, rapid reaction, and Fenton oxidation method is difficult to degrade or generalized in processing
It learns and aoxidizes in organic pollutant hard to work using extremely wide, but it is poor to be used alone that there are effects, medicament delivery amount is high
The problems such as in the presence of residual.
Photocatalysis is a kind of current novel wastewater processing technology, has the characteristics that efficient, energy conservation, use scope are wide, right
The organic matter of difficult for biological degradation can mineralising be directly inorganic molecules, be with a wide range of applications, become waste water in recent years
The new hot technology of processing.But photocatalysis technology is during individually processing high concentrated organic wastewater, because of the coloration of its waste water
Cause its optical absorption poor greatly very much, influences its catalytic degradation efficiency, and high concentrated organic wastewater complicated component, be generally difficult to
Thorough mineralising removal.
Summary of the invention
To overcome above-mentioned technical problem of the existing technology, the present invention provides a kind of hybrid Treatment of Coking Effluent sides
Method realizes the COD effectively reduced in coking wastewater, ammonia nitrogen, other organic pollutants.
The technical scheme to solve the above technical problems is that
A kind of hybrid coking waste water treatment method, comprising:
Coking wastewater enters in Fenton oxidation reactor, and oxidation reaction is carried out under the action of Fenton reagent；
Coking wastewater after oxidation reaction enters coagulating sedimentation reactor, after dosing coagulant and flocculation aid removal aoxidize
Precipitating；Sludge discharge after precipitating, supernatant enter photocatalytic oxidation reactor；
After the supernatant enters light-catalyzed reaction under the effect of the catalyst, qualified discharge.
Water distribution system is equipped in the Fenton oxidation reactor, make the coking wastewater even into.
Acid adding system is equipped in the Fenton oxidation reactor, control oxidation reaction pH value is 3~4.
Internal circulation system is set in the Fenton oxidation reactor, it is ensured that Fenton reagent, acid are abundant mixed with coking wastewater
It closes.
It is equipped in the coagulating sedimentation reactor plus alkali system, control coagulating pH value is 7.
Mud discharging device is equipped in the coagulating sedimentation reactor, lower end is arranged bucket, periodically carries out blowdown.
Chemicals dosing plant is set in the photocatalytic oxidation reactor, and the catalyst of addition is TiO2And H2O2。
A kind of hybrid apparatus for treating carbonized waste water, comprising:
Fenton oxidation reactor enters for receiving coking wastewater, oxidation reaction is carried out under the action of Fenton reagent；
Coagulating sedimentation reactor enters for receiving the coking wastewater after oxidation reaction, and dosing coagulant is gone with flocculation aid
Except the precipitating after oxidation；Sludge discharge after precipitating, supernatant enter photocatalytic oxidation reactor；
The photocatalytic oxidation reactor for receiving the supernatant, and carries out photocatalysis under the effect of the catalyst
Reaction, the discharge after the coking wastewater is up to standard.
Water distribution system is equipped in the Fenton oxidation reactor, make the coking wastewater even into.
Mud discharging device is equipped in the coagulating sedimentation reactor, lower end is arranged bucket, periodically carries out blowdown.
The beneficial effects of the present invention are: coking wastewater enters in Fenton oxidation reactor, under the action of Fenton reagent into
Row oxidation reaction subsequently enters coagulating sedimentation reactor, the precipitating after dosing coagulant and flocculation aid removal oxidation, sludge settling
After be discharged, supernatant enters photocatalytic oxidation reactor, enters photocatalysis to coking wastewater under the effect of the catalyst, last burnt
Change discharged wastewater met the national standard.Coking waste water treatment process of the invention, using effect is good, can effectively reduce in coking wastewater
COD, ammonia nitrogen, other organic pollutants etc., and easy to operate, be easy to control, high treating effect, reaction efficiency it is high, have compared with
Strong feasibility.
Detailed description of the invention
Fig. 1 is the hybrid coking waste water treatment method schematic illustration that the embodiment of the present invention one provides.
Fig. 2 is hybrid apparatus for treating carbonized waste water structural schematic diagram provided by Embodiment 2 of the present invention.
Fig. 3 is the hybrid coking waste water treatment method process schematic representation that the embodiment of the present invention three provides.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can be combined with each other.
Technical process of the present invention is that coking wastewater enters in Fenton oxidation reactor, under the action of Fenton reagent
Oxidation reaction is carried out, coagulating sedimentation reactor, the precipitating after dosing coagulant and flocculation aid removal oxidation are subsequently entered, sludge sinks
It is discharged behind shallow lake, supernatant enters photocatalytic oxidation reactor, enters photocatalysis to coking wastewater under the effect of the catalyst, finally
Coking wastewater qualified discharge.
Including Fenton oxidation method, coagulant sedimentation and photocatalytic oxidation, it is heavy to respectively correspond Fenton oxidation reactor, coagulation
Shallow lake reactor and photocatalytic oxidation reactor.Photocatalysis, last coking wastewater are entered to coking wastewater under the effect of the catalyst
Qualified discharge.
Embodiment one
As shown in Figure 1, including the following steps: the present embodiment provides a kind of hybrid coking waste water treatment method
Step 11, coking wastewater enters in Fenton oxidation reactor, and oxidation reaction is carried out under the action of Fenton reagent.
Fenton oxidation reactor process is hydrogen peroxide (H2O2) and ferrous ion Fe2+Mixed solution will much
The organic compound known such as carboxylic acid, alcohol, esters are oxidized to inorganic states.React the high energy with removal persistent organic pollutants
Power, in the wastewater treatments such as dyeing waste water, oily waste water, phenol wastewater, coking wastewater, nitrobenzene-containing waste water, diphenylamines waste water
Have and is widely applied very much.
It is equipped with water distribution system in Fenton oxidation reactor, makes uniform into water.Acid adding system is equipped in Fenton oxidation reactor,
According to experimental result, oxidation reaction optimal pH is adjusted to 3~4.Medicine system is set in Fenton oxidation reactor, and Fenton reagent is added
Carry out oxidation reaction, according to experimental result, the best FeSO of oxidation reaction4/H2O2Usage ratio be about 1.5.Fenton oxidation is anti-
It answers and internal circulation system is set in device, it is ensured that Fenton reagent, acid are sufficiently mixed with coking wastewater.Setting in Fenton oxidation reactor
Heating system, according to experimental result, oxidation reaction optimum temperature is adjusted to 30 DEG C.Setting pH is supervised online in Fenton oxidation reactor
Survey device and temperature on-line detection device, pH value and temperature in real-time measurement reactor.It is fragrant according to coking wastewater flow design
The size of oxidation reactor, according to test result, coking wastewater most optimal retention time is about 30min.
Step 12, the coking wastewater after oxidation reaction enters coagulating sedimentation reactor, and dosing coagulant and flocculation aid remove
Precipitating after oxidation；Sludge discharge after precipitating, supernatant enter photocatalytic oxidation reactor.
Coagulating sedimentation is the one kind precipitated in wastewater treatment.Coagulation process is in industrial water and life Treatment of Coking Effluent
Most basic is also particularly important treatment process, by adding some medicaments (commonly referred to as coagulant and flocculation aid) into water,
So that the particle for being difficult to precipitate in water is aggregated with one another and is formed colloid, then forms bigger flocculation in conjunction with the impurity in water body
Body.Floccule body has powerful adsorption capacity, can not only adsorb suspended matter, moreover it is possible to absorbed portion bacterium and dissolved matter.Floccule body
By absorption, volume increases and sinks.
It is equipped in coagulating sedimentation reactor and adds alkali system, according to experimental result, coagulating optimal pH is 7.Coagulation is heavy
It is equipped with medicine system in the reactor of shallow lake, coagulant and flocculation aid is added.Coagulation reactor, which is equipped with mixing arrangement, to be ensured coagulant, helps
Solidifying agent is sufficiently mixed with coking wastewater.Setting cold water inlet road and hot water inlet pipe road, guarantee certain in coagulation reactor
Temperature.PH on-Line Monitor Device and temperature on-line detection device, the pH value in real-time measurement reactor are set in coagulation reactor
With temperature.According to the size of coking wastewater flow design coagulation reactor, according to test result, coking wastewater most optimal retention time
About 10~30min.Mud discharging device is equipped in coagulating sedimentation reactor, reactor lower end is arranged bucket, periodically carries out blowdown.It is mixed
Slag system is scraped in setting in solidifying precipitation reactor, and the dross on upper layer after reaction is removed.Overflow weir is set in coagulation reactor,
Guarantee the limpid of water outlet.
Step 13, after the supernatant carries out light-catalyzed reaction under the effect of the catalyst, qualified discharge.
Photocatalysis oxidation reaction is aoxidized using light excitation by O2、H2O2Equal oxidants are combined with light radiation.It uses up main
For ultraviolet light, including uv-H2O2、uv-O2Etc. techniques, can be used for handling the object difficult to degrade such as CCl4 in coking wastewater, Polychlorinated biphenyls
Matter.In addition, there is synergistic effects between ultraviolet light and iron ion in the Fenton-like system for having ultraviolet light, make H2O2It decomposes and generates
The rate of hydroxyl radical free radical is greatly speeded up, and promotes the oxidation removal of organic matter.
Light source emitter is set in photocatalytic oxidation reactor.Chemicals dosing plant is set in photocatalytic oxidation reactor, is added
The catalyst entered is TiO2With a certain amount of H2O2.Internal circulation system is set in photocatalytic oxidation reactor, it is ensured that catalyst, double
Oxygen water and coking wastewater are sufficiently mixed.Aerating system is set in photocatalytic oxidation reactor, effect of mass transmitting can be increased, simultaneously
The dissolved oxygen in water can also be increased, to improve degradation efficiency.
In the present embodiment, coking wastewater enters in Fenton oxidation reactor, carries out aoxidizing under the action of Fenton reagent anti-
It answers, subsequently enters coagulating sedimentation reactor, dosing coagulant and flocculation aid remove the precipitating after oxidation, are discharged after sludge settling,
Supernatant enters photo catalysis reactor, enters photocatalysis to coking wastewater under the effect of the catalyst, and last coking wastewater is up to standard
Discharge.
The present embodiment combines Fenton oxidation with photochemical catalytic oxidation, can degrade during Fenton oxidation and remove big portion
Divide organic pollutant, so that its coloration of degrading significantly, can effectively improve absorption of the catalyst to light in subsequent photocatalysis technique
Efficiency, to improve the removal efficiency to persistent organic pollutants.In addition, the coupling of Fenton oxidation and photochemical catalytic oxidation can also
To solve the problems, such as that hydrogen peroxide is excessive during Fenton oxidation, because excessive hydrogen peroxide enters photocatalysis during Fenton oxidation
In reaction process, this will generate a large amount of superoxide anion or hydroxyl radical free radical isoreactivity free radical, further improve light and urge
Change the mineralising removal rate of processing organic wastewater.Technology of the invention has extremely heavy in the processing of actual organic wastewater with difficult degradation thereby
The meaning wanted.
Advantage of this embodiment is that: flocculation sedimentation can remove oil removal and removal part inorganic salts, and by photocatalysis
Technique is combined with Fenton oxidation technique, can overcome well Fenton oxidation and the single technique of photocatalysis be difficult to thoroughly handle it is with high salt
The disadvantages of dioxygen water use efficiency is not high during organic wastewater and Fenton oxidation significantly improves the degradation of its high salt organic waste water
Effect reduces cost.
As shown in Fig. 2, the present invention also provides a kind of hybrid apparatus for treating carbonized waste water, comprising:
Fenton oxidation reactor 21 enters for receiving coking wastewater, oxidation reaction is carried out under the action of Fenton reagent；
Coagulating sedimentation reactor 22 enters, dosing coagulant and flocculation aid for receiving the coking wastewater after oxidation reaction
Precipitating after removal oxidation；Sludge discharge after precipitating, supernatant enter photocatalytic oxidation reactor 23；
The photocatalytic oxidation reactor 23 for receiving the supernatant, and carries out light under the effect of the catalyst and urges
Change reaction, the discharge after the coking wastewater is up to standard.
Water distribution system is equipped in the Fenton oxidation reactor 21, make the coking wastewater even into.
Mud discharging device is equipped in the coagulating sedimentation reactor 22, lower end is arranged bucket, periodically carries out blowdown.
Further, it is equipped with water distribution system in Fenton oxidation reactor 21, makes uniform into water.
Acid adding system is equipped in Fenton oxidation reactor 21, according to experimental result, the best pH value of oxidation reaction is adjusted to 3~
4。
Medicine system is set in Fenton oxidation reactor 21, and Fenton reagent is added and carries out oxidation reaction, according to experimental result, oxygen
Change and reacts best FeSO4/H2O2Usage ratio be about 1.5.
21 setting internal circulation system in Fenton oxidation reactor, it is ensured that Fenton reagent, acid are sufficiently mixed with coking wastewater.
Heating system is set in Fenton oxidation reactor 21, and according to experimental result, oxidation reaction optimum temperature is adjusted to 30
℃。
Setting pH on-Line Monitor Device and temperature on-line detection device, real-time measurement reactor in Fenton oxidation reactor 21
Interior pH value and temperature.According to the size of coking wastewater flow design Fenton oxidation reactor, according to test result, coking wastewater
Most optimal retention time is about 30min.
It is equipped in coagulating sedimentation reactor 22 and adds alkali system, according to experimental result, the best pH value of coagulating is 7.
It is equipped with medicine system in coagulating sedimentation reactor 22, coagulant and flocculation aid is added.
Coagulating sedimentation reactor 22, which is equipped with mixing arrangement, ensures that coagulant, flocculation aid and coking wastewater are sufficiently mixed.
Setting cold water inlet road and hot water inlet pipe road, guarantee certain temperature in coagulating sedimentation reactor 22.
Setting pH on-Line Monitor Device and temperature on-line detection device, real-time measurement reactor in coagulating sedimentation reactor 22
Interior pH value and temperature.According to the size of coking wastewater flow design coagulation reactor 22, according to test result, coking wastewater is most
The good residence time is about 10~30min.
Mud discharging device is equipped in coagulating sedimentation reactor 22, lower end is arranged bucket, periodically carries out blowdown.
Slag system is scraped in setting in coagulating sedimentation reactor 22, and the dross on upper layer after reaction is removed.
Overflow weir is set in coagulating sedimentation reactor 22, guarantees the limpid of water outlet.
Light source emitter is set in photocatalytic oxidation reactor 23.
Chemicals dosing plant is set in photocatalytic oxidation reactor 23, and the catalyst of addition is TiO2With a certain amount of H2O2。
Internal circulation system is set in photocatalytic oxidation reactor 23, it is ensured that catalyst, hydrogen peroxide and coking wastewater it is abundant
Mixing.
Aerating system is set in photocatalytic oxidation reactor 23, effect of mass transmitting can be increased, while can also increase in water
Dissolved oxygen, to improve degradation efficiency.
Fig. 3 is the hybrid coking waste water treatment method process schematic representation that the embodiment of the present invention three provides.
Intelligent hybrid Treatment of Coking Effluent scheme in each embodiment of the present invention, coking wastewater enter Fenton oxidation
In reactor, oxidation reaction is carried out under the action of Fenton reagent, subsequently enters coagulating sedimentation reactor, dosing coagulant with help
Solidifying agent removes the precipitating after oxidation, is discharged after sludge settling, supernatant enters photocatalytic oxidation reactor, in the effect of catalyst
Under photocatalysis, last coking wastewater qualified discharge are entered to coking wastewater.Coking waste water treatment process of the invention, using effect
It is good, COD, ammonia nitrogen, other organic pollutants etc. in coking wastewater can be effectively reduced, and easy to operate, be easy to control,
High treating effect, reaction efficiency are high, have stronger feasibility.
In the description of the present invention, it should be noted that term "top", "bottom", " orientation of instructions such as "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as indicating
Or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of hybrid coking waste water treatment method, which comprises the steps of:
Coking wastewater enters in Fenton oxidation reactor, and oxidation reaction is carried out under the action of Fenton reagent；
Coking wastewater after oxidation reaction enters coagulating sedimentation reactor, heavy after dosing coagulant and flocculation aid removal oxidation
It forms sediment；Sludge discharge after precipitating, supernatant enter photocatalytic oxidation reactor；
After the supernatant carries out light-catalyzed reaction under the effect of the catalyst, qualified discharge.
2. making the method according to claim 1, wherein being equipped with water distribution system in the Fenton oxidation reactor
The coking wastewater even into.
3. being controlled the method according to claim 1, wherein being equipped with acid adding system in the Fenton oxidation reactor
Oxygenerating pH value in reaction is 3~4.
4. according to the method described in claim 3, it is characterized in that, the Fenton oxidation reactor in be arranged internal circulation system,
Ensure that Fenton reagent, acid are sufficiently mixed with coking wastewater.
5. adding alkali system the method according to claim 1, wherein being equipped in the coagulating sedimentation reactor, control
Coagulating pH value processed is 7.
6. the method according to claim 1, wherein the coagulating sedimentation reactor in be equipped with mud discharging device, under
End setting bucket, periodically carries out blowdown.
7. the method according to claim 1, wherein the photocatalytic oxidation reactor in be arranged chemicals dosing plant,
The catalyst of addition is TiO2And H2O2。
8. a kind of hybrid apparatus for treating carbonized waste water characterized by comprising
Fenton oxidation reactor enters for receiving coking wastewater, oxidation reaction is carried out under the action of Fenton reagent；
Coagulating sedimentation reactor enters for receiving the coking wastewater after oxidation reaction, and dosing coagulant and flocculation aid go deoxygenation
Precipitating after change；Sludge discharge after precipitating, supernatant enter photocatalytic oxidation reactor；
The photocatalytic oxidation reactor for receiving the supernatant, and carries out light-catalyzed reaction under the effect of the catalyst,
The discharge after the coking wastewater is up to standard.
9. device according to claim 8, which is characterized in that be equipped with water distribution system in the Fenton oxidation reactor, make
The coking wastewater even into.
10. device according to claim 7, which is characterized in that mud discharging device is equipped in the coagulating sedimentation reactor, under
End setting bucket, periodically carries out blowdown.
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| CN111977844A (en) * | 2020-08-17 | 2020-11-24 | 西安建筑科技大学 | PVA production wastewater treatment device and method based on advanced oxidation combination |
| CN113371881A (en) * | 2021-06-22 | 2021-09-10 | 中石化南京化工研究院有限公司 | Treatment method of process wastewater generated in one-step synthesis of N-phenylmaleimide |
| CN115745132A (en) * | 2022-11-01 | 2023-03-07 | 中国石油化工股份有限公司 | Fenton photocatalytic fluidized bed reactor |
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