CN207713584U - A kind of innocuity disposal system of chlorophenols waste water - Google Patents
A kind of innocuity disposal system of chlorophenols waste water Download PDFInfo
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- CN207713584U CN207713584U CN201721571029.0U CN201721571029U CN207713584U CN 207713584 U CN207713584 U CN 207713584U CN 201721571029 U CN201721571029 U CN 201721571029U CN 207713584 U CN207713584 U CN 207713584U
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- wet oxidation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model discloses a kind of innocuity disposal systems of chlorophenols waste water, processing system includes pretreatment unit, wet oxidation reaction device, waste water deployment device, biochemical treatment apparatus and exhaust gas processing device etc., wherein, liquid product and the solid residue outlet of the wet oxidation reaction device are connected with the entrance of waste water deployment device, the gas-phase product outlet of the wet oxidation reaction device is discharged after being directly connected to exhaust gas processing device processing by pipeline, the biochemical treatment apparatus treated water outlet be expelled directly out, the sludge that biochemical treatment apparatus processing generates then is introduced directly into wet oxidation reaction device by pipeline.The application total system reasonable design, after carrying out Chlorophenol processing using it, the COD removal rates of Chlorophenol are more than 95%；It is easily operated, and water quality safety is high, stable effluent quality, emission-free discharge and sludge are led to the problem of.
Description
Technical field
The utility model is related to wastewater processing technologies, and in particular to a kind of innocuity disposal system of chlorophenols waste water.
Background technology
With the industrialized continuous development in China, more and more compounds are applied to various industries.Have as one kind
There are the substance of the effect of broad-spectrum sterilization, desinsection, chlorophenols compound to be widely used in preservative, antirust agent, insecticide, kill
In the industries such as microbial inoculum, herbicide.The use of a large amount of chlorophenols compounds causes it inevitably to enter in environment water.By
There is stronger bactericidal activity, bio-toxicity and carcinogenic, teratogenesis, mutagenesis etc. " three cause " effect in chlorophenols compound, and
It is difficult to degrade in the environment, can constantly be accumulated in vivo by food chain and food web, seriously threaten human health
And ecological environment.Therefore it needs effectively to be handled containing Chlorophenol.
Chlorophenols compound causes its biodegradability very low due to the presence of its specific aromatic ring structure and chloro atom,
Therefore, it is difficult to be removed using conventional biological treatment.Therefore existing biodegradable chlorophenols compound is needed using special
Property flora is degraded, and operating condition is harsh, such as CN103736241A.High-level oxidation technology is often used as containing chlorine
The technique of phenol wastewater treatment.The effect of the wherein oxidation of ozone direct oxidation parachlorphenol substance is poor, and processing capacity is weak；Catalysis
Oxidation because a large amount of uses of catalyst cause it is seriously polluted and expensive；And although photocatalytic oxidation avoids catalyst
Pollution problem, however for the industrial wastewater of light transmittance difference, treatment effect is bad.Meanwhile although high-level oxidation technology to chlorine
Aldehydes matter has certain degradation efficiency, but will produce intermediate product or by-product that a large amount of structures differ in oxidation process
The toxicity of object, some of which intermediate product can also be far longer than parent pollutant, it is difficult to be truly realized the innoxious of chlorophenols waste water
Processing.Therefore, the purpose of chlorophenol pollutant in removal water body can not be fully achieved in treatment technology single at present.
Utility model content
Poor, processing procedure the intermediate product for wastewater biodegradability present in current chlorophenols wastewater treatment process
The defects of more, removal is not thorough, the utility model provides a kind of innocuity disposal system of chlorophenols waste water.
The innocuity disposal system of chlorophenols waste water described in the utility model includes the pre- place being sequentially communicated by pipeline
Manage device, wet oxidation reaction device, waste water deployment device and biochemical treatment apparatus, wherein the wet oxidation reaction dress
Liquid product and the solid residue outlet set are connected with the entrance of waste water deployment device, the gas of the wet oxidation reaction device
Phase product exit is discharged after being directly connected to exhaust gas processing device processing by pipeline, and treated goes out for the biochemical treatment apparatus
Water is expelled directly out, and the sludge that biochemical treatment apparatus processing generates then is introduced directly into wet oxidation reaction device by pipeline.
Wherein, a mixer can also be added between the pretreatment unit and wet oxidation reaction device, it will be biochemical
The biochemical sludge of processing unit everywhere is first imported in mixer and is uniformly mixed with the filtrate after being pre-processed by step (1), so
Import wet oxidation reaction device again afterwards.
The biochemical treatment apparatus is membrane bioreactor.Membrane bioreactor sludge concentration be 5000-10000mg/L,
Aeration quantity is 20-40L/h, hydraulic detention time 1-5h.
The exhaust gas processing device is biofilter.Filler in the biofilter be peat, sawdust, porous ceramics,
One or more of granular activated carbon, treatment temperature is 25-35 DEG C, pH 7-8.
Preferably, there are one circulating pumps for series connection on the sludge outlet pipeline of the biochemical treatment apparatus.
The method for handling chlorophenols waste water using above-mentioned innocuity disposal system, includes the following steps：
(1) it pre-processes：Pending chlorophenols waste water is imported into pretreatment unit, flocculant is added, is filtered off after stirring
Oil removal and particulate matter, it is 7-9 to adjust filtrate pH；Then filtrate is mixed with the sludge that step (4) biochemical treatment generates, is obtained
To mixture；
(2) wet oxidation：Mixture after being pre-processed via step (1) is transported to wet oxidation reaction device, is added
Enter catalyst reaction, the organic pollution in mixture is degraded, and gas phase and liquid product and a small amount of solid residue are formd；
After the completion of reaction, gas-phase product is discharged after being discharged into exhaust gas processing device purification, and liquid product and solid residue enter in next step
Reason；
(3) waste water is allocated：Liquid product and solid residue that step (2) wet oxidation reaction generates are delivered to waste water tune
With device, then precipitation removal solid residue adjusts wastewater pH to 6-8, temperature to 20-35 DEG C, salt content and is less than 2%；
(4) biochemical treatment：Waste water after being allocated via step (3) imports biochemical treatment apparatus, and treated, and water outlet is straight
Run in and put, the biochemical sludge generated after processing imports wet oxidation together after then being mixed with the filtrate that step (1) pretreatment obtains
Reaction unit.
In step (1), the flocculant is FeCl3、AlCl3, Sodium Polyacrylate and polyacrylamide it is one such or several
Kind, dosage is the 0.1%-0.3% of pending chlorophenols wastewater quality.
In step (1), according to actual conditions, acid is added into filtrate or alkali adjusts pH as 7-9.
In step (2), the catalyst is one or more of metal salt solutions such as Cu, Fe, Mn, Ce and Ti, is added
Amount is the 0.1%-0.2% of pending chlorophenols waste water and biochemical sludge mixture quality.
In step (2), the wet oxidation reaction condition is：It is 250-320 DEG C of reaction temperature, reaction pressure 5-8MPa, anti-
0.5-2h between seasonable, oxidant used are oxygen, coefficient of oxidation 1.2-1.5.The wet oxidation reaction device is that continous way is anti-
Device is answered, continuous feed and discharging may be implemented.The wet oxidation reaction device uses oxygenerator existing by raw material of air
Field high purity oxygen, is used for wet oxidation reaction, oxygen purity>90%.The utility model is realized using continuous formula device to be connected
Continuous input and output material, is conducive to industrial applications；Using oxygenerator formed in-situ high purity oxygen gas, be conducive to improve pollution removal rate and
Reduce energy consumption.
In step (2), the exhaust gas processing device is biofilter, direct emission after purifying harmful gas.Further,
Filler in the biofilter is one or more of peat, sawdust, porous ceramics, granular activated carbon, and treatment temperature is
25-35 DEG C, pH 7-8.
In step (4), the biochemical treatment system is membrane bioreactor, further removes the organic pollution in water removal,
Wherein, membrane bioreactor sludge concentration be 5000-10000mg/L, aeration quantity 20-40L/h, hydraulic detention time 1-
5h。
In above-mentioned integrated conduct method, the reaction mass of wet oxidation is the mixture of chlorophenols waste water and biochemical sludge,
Biodegradability >=0.4 is discharged after wet oxidation is handled.After integrated artistic, conversion ratio >=99% of chlorophenol, Chlorophenol
COD removal rate >=95%.
In summary as it can be seen that the method for innocent treatment of above-mentioned chlorophenols waste water, be " pretreatment+wet oxidation+allotment+
The group technology of biochemistry+vent gas treatment " carries out oxidative degradation using wet oxidation process parachlorphenol waste water, chlorophenol is oxidized to small
Molecular organic improves its biodegradability；Using membrane bioreactor to biodegradability higher wet oxidation water outlet at
Reason, further remove water body in organic pollution so that chlorophenols completely remove, biochemical process generate excess sludge with
Wet oxidation processing is carried out after Chlorophenol mixing；Purified treatment is carried out to the tail gas that wet oxidation generates using biofilter.
Advantageous effect：It is compared to the prior art, herein described total system is scientific and reasonable, using the system
The process of processing chlorophenols waste water has the advantage that：
(1) usage amount of the advanced oxidation processes chemical agent such as traditional Fenton is big, and it is more to generate iron cement, it is difficult to it clears up, and
The utility model carries out oxidative degradation using wet-type oxidation technology parachlorphenol class waste water, reduces the dosage and sludge of chemical agent
It generates；
(2) oxidation effectiveness of traditional advanced oxidation processes parachlorphenol class waste water is bad, and the utility model use is wet
Conversion ratio >=85% of formula oxidation technology parachlorphenol, chlorophenol are broken down into small carboxylic acid molecules and chlorion, and oxidation effectiveness is good, greatly
Ground improves the biodegradability of waste water, and wet oxidation is discharged biodegradability >=0.4；Wet oxidation reaction device used is continous way
Continuous feed and discharging may be implemented in reaction unit, is convenient for large-scale commercial application.
(3) the utility model combines wet-type oxidation technology and membrane bioreactor, can greatly reduce residual in waste water
The organic pollution stayed, conversion ratio >=99%, COD removal rate >=95% of chlorophenol reduce water body security risk；
(4) wet-type oxidation technology and membrane bioreactor provided by the utility model are combined, and reduce retention time of sewage,
It is easily operated, and water standard is high, stable effluent quality；
(5) the utility model mixes pretreated chlorophenols waste water with sludge caused by biochemical treatment process
Allotment, it is common to carry out wet oxidation processing, reduce processing and the disposal costs of biochemical sludge；
(6) it utilizes the processing of different process to combine to improve the degradation efficiency of chlorophenols in waste water, reduces intermediate production
The generation of object reduces it and poisons risk to reach innoxious purpose, meets environment protection requirement.
Description of the drawings
Fig. 1 is the innocuity disposal system schematic diagram of chlorophenols waste water.
Specific implementation mode
The application is specifically described with reference to embodiment.
Embodiment 1
The innocuity disposal system of chlorophenols waste water as shown in Figure 1 includes the pretreatment dress being sequentially communicated by pipeline
It sets, wet oxidation reaction device, waste water deployment device and biochemical treatment apparatus, wherein the wet oxidation reaction device
Liquid product and solid residue outlet are connected with the entrance of waste water deployment device, the gas phase production of the wet oxidation reaction device
Object outlet is discharged after being directly connected to exhaust gas processing device processing by pipeline, and treated that water outlet is straight for the biochemical treatment apparatus
Run in, the sludge that biochemical treatment apparatus processing generates then is introduced directly into wet oxidation reaction device by pipeline.Life therein
Change processing unit is membrane bioreactor, and exhaust gas processing device is biofilter.
Embodiment 2
The harmless treatment of chlorophenols waste water is carried out using system described in embodiment 1.
Certain chemical industry factory production waste water, pH value 2.28, COD 9100mg/L, wherein contain 125.8mg/L2,4- dichloros
Phenol, 127.2mg/L2,4,6- trichlorophenols, 75.4mg/L2,3,5,6- tetra-chloro-phenols.Waste water imports pretreatment unit, is added 0.1%
Sodium Polyacrylate, then flocculation stirring filters, remove the suspended matter in water body, and the liquid caustic soda for being added 30% adjusts the pH of water body
Value is 7；Waste water is mixed with excess sludge caused by biochemical reaction, wet oxidation reaction device is introduced, is added 0.1%
FeCl3As catalyst, for oxygen as oxidant, oxygen purity 93%, reaction temperature be 250 DEG C, reaction pressure 5MPa, anti-
It is 0.5h between seasonable, the conversion ratio of chlorophenols is 85.3% after wet oxidation system, and water outlet biodegradability is 0.4；It is wet
Formula oxidation water outlet enters waste water deployment device, adjusts the pH to 6 of waste water, temperature is 20 DEG C, salt content 1%, is then drawn
Enter membrane bioreactor, membrane bio-reaction system sludge concentration is 5000mg/L, aeration quantity 20L/h, hydraulic detention time are
1h；The excess sludge that membrane bio-reaction system generates introduces wet oxidation reaction device and is handled；The tail gas of wet oxidation draws
Enter biofilter and carry out vent gas treatment, bio-filter stuffing is peat, temperature is 25 DEG C, pH 7.After the process,
The COD removal rates of the chlorophenols waste water are 95.7%, and the removal efficiency 99.5% of chlorophenols reaches《Integrated wastewater discharges
Standard》The grade III Standard of GB8978-1996, meet the sewage treatment plant of chemical industrial park takes over requirement.
Comparative example 1
The pending waste water of the comparative example with embodiment 2, concrete operations with embodiment 2 the difference is that：It only carries out wet
Formula aoxidizes, and no longer carries out biochemical treatment.The conversion ratio of chlorophenols is 82.1% after wet oxidation system, and water outlet is biochemical
Property is 0.4, and COD removal rates are only 75.5%, and cannot meet the sewage treatment plant of chemical industrial park takes over requirement.
Comparative example 2
The pending waste water of the comparative example with embodiment 2, concrete operations with embodiment 2 the difference is that：Using air
As oxidant.After integrated artistic is handled, the COD removal rates of the chlorophenols waste water are 91.2%, and chlorophenols are gone
Except efficiency 95.0%, the not up to sewage treatment plant of chemical industrial park takes over requirement.
Embodiment 3
Certain chemical industry factory production waste water, pH value 4.08, COD 21200mg/L, wherein contain 132.2mg/L2,4,6- tri-
Chlorophenol, 2,3,5,6- tetra-chloro-phenols of 327.4mg/L, 260.3mg/L pentachlorophenols.Waste water imports pretreatment unit, is added 0.1%
Polyacrylamide flocculation stirring, is then filtered, and removes the suspended matter in water body, and it is 8 that NaOH, which is added, and adjusts the pH value of water body；It will give up
Water is mixed with the excess sludge that biochemical reaction generates, and introduces wet oxidation reaction device, 0.15% MnCl is added2As catalysis
Agent, oxygen is as oxidant, and oxygen purity 95%, reaction temperature be 280 DEG C, reaction pressure 7MPa, reaction time 1h, warp
The conversion ratio of chlorophenols is 89.8% after wet oxidation system, and water body biodegradability is 0.5；Wet oxidation water outlet enters useless
Water deployment device, adjusts the pH to 7 of waste water, temperature is 25 DEG C, salt content 1.5%, is then introduced into membrane bioreactor,
Membrane bio-reaction system sludge concentration is 7500mg/L, aeration quantity 30L/h, hydraulic detention time 3h；Membrane biological reaction system
The excess sludge that system generates introduces wet oxidation reaction device and is handled；The tail gas of wet oxidation introduces biofilter and carries out
Vent gas treatment, bio-filter stuffing are sawdust, and temperature is 30 DEG C, pH 8.After system processing, the chlorophenols waste water
COD removal rates are 97.6%, and the removal efficiency 99.8% of chlorophenols reaches《Integrated wastewater discharge standard》GB8978-
1996 grade III Standard, meet the sewage treatment plant of chemical industrial park takes over requirement.
Embodiment 4
Certain chemical industry factory production waste water, pH value 6.67, COD 39700mg/L, wherein contain 250.5mg/L2- chlorophenols,
148.5mg/L 2,4- Dichlorophenol, 326mg/L 2,6- Dichlorophenols, 222.6mg/L pentachlorophenols.Waste water imports pretreatment unit, adds
Enter 0.3% AlCl3Then flocculation stirring filters, remove the suspended matter in water body, and it is 9 that NaOH, which is added, and adjusts the pH value of water body；
Waste water is mixed with the excess sludge that biochemical reaction generates, wet oxidation reaction device is introduced, 0.2% Cu (NO is added3)2Make
For catalyst, oxygen as oxidant, oxygen purity 91%, reaction temperature be 320 DEG C, reaction pressure 8MPa, the reaction time
For 2h, the conversion ratio of chlorophenols is 94.7% after wet oxidation system, and water body biodegradability is 0.6；Wet oxidation goes out
Water enters waste water deployment device, adjusts the pH to 8 of waste water, temperature is 30 DEG C, salt content 0.4%, is then introduced into film life
Object reactor, membrane bio-reaction system sludge concentration is 10000mg/L, aeration quantity 40L/h, hydraulic detention time 5h.Film
The excess sludge that bio-reaction system generates introduces wet oxidation reaction device and is handled；The tail gas of wet oxidation introduces life
Object filter tank carries out vent gas treatment, and bio-filter stuffing is porous ceramics, and temperature is 35 DEG C, pH 7.5.It is handled by the system
Afterwards, the COD removal rates of the chlorophenols waste water are 98.8%, and the removal efficiency 99.9% of chlorophenols reaches《Integrated wastewater is arranged
Put standard》The grade III Standard of GB8978-1996, meet the sewage treatment plant of chemical industrial park takes over requirement.
Claims (7)
1. a kind of innocuity disposal system of chlorophenols waste water, which is characterized in that include the pretreatment being sequentially communicated by pipeline
Device, wet oxidation reaction device, waste water deployment device and biochemical treatment apparatus, wherein the wet oxidation reaction device
Liquid product and solid residue outlet be connected with the entrance of waste water deployment device, the gas phase of the wet oxidation reaction device
Product exit directly by pipeline be connected to exhaust gas processing device processing after be discharged, the biochemical treatment apparatus treated water outlet
It is expelled directly out, the sludge that biochemical treatment apparatus processing generates then is introduced directly into wet oxidation reaction device by pipeline.
2. processing system according to claim 1, which is characterized in that the pretreatment unit and wet oxidation reaction device
Between be equipped with mixer, biochemical sludge derived from biochemical treatment apparatus is first imported in mixer and is pre-processed with by pretreatment unit
Filtrate later is uniformly mixed, and then imports wet oxidation reaction device again.
3. processing system according to claim 1, which is characterized in that the biochemical treatment apparatus is membrane bioreactor.
4. processing system according to claim 3, which is characterized in that the membrane bioreactor sludge concentration is 5000-
10000mg/L, aeration quantity 20-40L/h, hydraulic detention time 1-5h.
5. processing system according to claim 1, which is characterized in that the exhaust gas processing device is biofilter.
6. processing system according to claim 5, which is characterized in that filler in the biofilter be peat, sawdust,
One or more of porous ceramics, granular activated carbon, treatment temperature is 25-35 DEG C, pH 7-8.
7. processing system according to claim 1, which is characterized in that on the sludge outlet pipeline of the biochemical treatment apparatus
It is in series with circulating pump.
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| CN201721571029.0U CN207713584U (en) | 2017-11-22 | 2017-11-22 | A kind of innocuity disposal system of chlorophenols waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721081A (en) * | 2017-11-22 | 2018-02-23 | 江苏省环境科学研究院 | A kind of innocuity disposal system and method for chlorophenols waste water |
| CN116495944A (en) * | 2023-06-25 | 2023-07-28 | 湖南沁森高科新材料有限公司 | Method and device for treating industrial wastewater in membrane production |
-
2017
- 2017-11-22 CN CN201721571029.0U patent/CN207713584U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721081A (en) * | 2017-11-22 | 2018-02-23 | 江苏省环境科学研究院 | A kind of innocuity disposal system and method for chlorophenols waste water |
| CN116495944A (en) * | 2023-06-25 | 2023-07-28 | 湖南沁森高科新材料有限公司 | Method and device for treating industrial wastewater in membrane production |
| CN116495944B (en) * | 2023-06-25 | 2023-09-26 | 湖南沁森高科新材料有限公司 | Method and device for treating industrial wastewater in membrane production |
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