CN104276705A - Method for treating phenolic waste water - Google Patents

Method for treating phenolic waste water Download PDF

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Publication number
CN104276705A
CN104276705A CN201310293233.0A CN201310293233A CN104276705A CN 104276705 A CN104276705 A CN 104276705A CN 201310293233 A CN201310293233 A CN 201310293233A CN 104276705 A CN104276705 A CN 104276705A
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CN
China
Prior art keywords
waste water
reaction tower
titanium dioxide
phenolic waste
nano titanium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310293233.0A
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Chinese (zh)
Inventor
王余标
李明
王岩岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Mideapure Environmental Engineering Co Ltd
Original Assignee
Shanghai Mideapure Environmental Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Mideapure Environmental Engineering Co Ltd filed Critical Shanghai Mideapure Environmental Engineering Co Ltd
Priority to CN201310293233.0A priority Critical patent/CN104276705A/en
Publication of CN104276705A publication Critical patent/CN104276705A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18Carbon
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/76Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/10Photocatalysts

Abstract

The invention provides a method for treating phenolic waste water. The method comprises the following steps: S1, introducing chlorine dioxide into phenolic waste water and fully mixing chlorine dioxide with phenolic waste water; S2, enabling the phenolic waste water treated in the S1 to flow into a reaction tower filled with an active carbon-loaded nanoscale titanium dioxide catalyst; and S3, introducing oxygen into the reaction tower, and carrying out phenol degradation under irradiation of ultraviolet lights. According to the method for treating phenolic waste water provided by the invention, chlorine dioxide and the active carbon-loaded nanoscale titanium dioxide catalyst are compounded in use to generate a synergistic effect, so that the phenol degradation effect is good. Moreover, during chemical degradation, heating and pressurizing are not needed, the reaction condition is mild, the concentration of chlorine dioxide in reaction is reduced and the treatment safety is further enhanced.

Description

A kind of method processing phenolic waste water
Technical field
The present invention relates to a kind of method processing waste water, particularly relate to a kind of method processing phenolic waste water.
 
Background technology
Phenol is raw material and the intermediate of the industry production such as papermaking, coking, oil refining, plastics, agricultural chemicals, medicine synthesis.Phenolic wastewater is very serious to the harm of the mankind.Phenol has organized remarkable corrosive nature to human body is any, by mucous membrane, skin contact, suck and wrongly take and invade inside of human body.After contact eye, cornea grievous injury can be caused, even blind; After contact skin, not causing pain, but present white at first in exposure portion, if do not rinsed removing rapidly, third-degree burn and systemic toxicity can be caused; After suction, can cause headache, dizziness, weak, blurring of vision, pulmonary edema etc., after wrongly taking, cause digestive tube to burn, occur burning pain, breathe band of gas phenol smell, and vomitus or stool can be with blood, have the possibility of gastric-intestinal perforation.Phenol is fine and smooth magma poisonous substance, chemical reaction can occur in it and cell magma during protein contacts, forms insoluble protein, and cell is lost vigor, and therefore, in research water, the removal of phenol is very necessary.
For improving the processing efficiency of Pyrogentisinic Acid's waste water further, in recent years, a large amount of research work has been done in the process of Chinese scholars phenolic waste water, and develops multiple treatment process.Such as: (1) chemical oxidization method, under the condition of temperature-pressure, the oxygenants such as dioxide peroxide, hydrogen peroxide and ozone are utilized the aldehydes matter in waste water to be oxidized to carbonic acid gas and water; 2) absorption method, utilize the porous character of sorbent material by waste water aldehydes matter absorption, adsorb saturated after, recycling alkali lye, steam or organic solvent carry out solution adsorption desorption; 3) biochemical process, utilizes the phenol in the microbially decontaminate waste water such as thread fungus, actinomycetes, fungi, mould and phenolic compound; 4) solvent extration, utilizes the extraction agent being insoluble in water to contact with waste water, make Phenol for Waste Water class material and extraction agent carry out the combination of physics and chemistry, realize the phase transition of aldehydes matter, but extraction agent consumption is large, easily causes solvent loss and secondary pollution; 5) burning method, carries out high-temperature air oxidation to waste water, is that organism is converted into the small molecules such as water and carbonic acid gas, but may produce toxic gas after burning, and causes secondary pollution.In aforesaid method, chemical oxidization method Pyrogentisinic Acid waste water treatment efficiency is high, but needs temperature-pressure, and reaction conditions is too violent, and security is low.
 
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of chemical oxidization method of gentleness to process phenolic waste water, phenolic waste water processing efficiency is high.
The invention provides a kind of method processing phenolic waste water, comprise the following steps:
Step 1, passes into dioxide peroxide in phenolic waste water, makes it fully mix;
Step 2, the phenolic waste water after step 1 being processed flows into the reaction tower that activated carbon supported catalyst of Nano titanium dioxide is housed;
Step 3, passes into oxygen in reaction tower, under the irradiation of UV-light, carries out phenol degrading.
Preferably, described dioxide peroxide reacts obtained by sodium chlorate and hydrochloric acid in the filler chamber of chlorine dioxide reaction device.
Preferably, in the phenolic waste water after step 1 process, the concentration of dioxide peroxide is 0.5-5mg/L.
Preferably, in step 3, the time of carrying out phenol degrading is 0.5-5h, is more preferably 1-4h, is more preferably 1.5-3h, such as 2h.
Preferably, described in step 2, activated carbon supported catalyst of Nano titanium dioxide is prepared as follows:
A. by Nano titanium dioxide powder dispersion containing in the mixed solution of granulated active carbon, soak after 1-50h, filter, by solid drying, roasting;
B. the solid after roasting is immersed in the filtrate of filtering and obtaining, after soaking 1-50h, filters, by solid drying, roasting;
C. repeating step b at least 1 time (preferably at least repeat 3 times, more preferably at least repeat 5 times, such as 8-10 time).
Preferably, in step a, soak time is 1-40h, is more preferably 2-30h, is more preferably 2-20h, is more preferably 2-15h, is more preferably 3-10h.
Preferably, in step b, soak time is 1-40h, is more preferably 2-30h, is more preferably 2-20h, is more preferably 2-15h, is more preferably 3-10h.
Preferably, in described activated carbon supported catalyst of Nano titanium dioxide, the content of titanium dioxide is 1-20wt%, is more preferably 2-10wt%, is more preferably 3-8wt%, be more preferably 4-6wt%.
Preferably, the surface-area > 1000m of gac in described activated carbon supported catalyst of Nano titanium dioxide 2/ g.
Present invention also offers a kind of device realizing the method for above-mentioned process phenolic waste water, comprise mixing vessel, reaction tower, blower fan and storage receptacle, wherein, described mixing vessel passes through to be connected with the fluid inlet of reaction tower, described blower fan is connected with the inlet mouth of reaction tower, described storage receptacle is connected with the liquid outlet of reaction tower, and described reaction tower is built with activated carbon supported catalyst of Nano titanium dioxide.
Preferably, the bottom of described reaction tower is provided with aeration head.
Preferably, described blower fan is roots blower.
In the method for process phenolic waste water provided by the invention, by dioxide peroxide and the composite use of activated carbon supported catalyst of Nano titanium dioxide, produce synergy, phenol degrading is effective, and when carrying out chemical degradation, without the need to heating and pressurizing, reaction conditions is gentle, and react the reduction of described chlorine dioxide concentration, further increase the security of process.
 
Accompanying drawing explanation
The structural representation of the device of process phenolic waste water of the present invention,
Wherein, mixing vessel 1, roots blower 2, reaction tower 3, storage receptacle 4, activated carbon supported catalyst of Nano titanium dioxide 5.
 
Embodiment
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments, to understand the present invention better.
 
Activated carbon supported catalyst of Nano titanium dioxide is prepared according to following step:
A. by Nano titanium dioxide powder dispersion containing in the mixed solution of granulated active carbon, soak after 10h, filter, by solid drying, roasting;
B. the solid after roasting is immersed in the filtrate of filtering and obtaining, after soaking 5h, filters, by solid drying, roasting;
C. repeating step b at least 5 times.
Obtained activated carbon supported catalyst of Nano titanium dioxide 5 is loaded in reaction tower 3.
with sodium chlorate and hydrochloric acid for raw material adopts filler contact process to prepare ClO in chlorine dioxide generator 2, NaClO 3clO 2+ NaCl+H 2o.
Passed into by dioxide peroxide in phenolic waste water, in mixing vessel 1, make it fully mix, the concentration controlling chlorine monoxide in waste water is about 2 mg/L.
Mixed waste water is flowed into the reaction tower 3 that activated carbon supported catalyst of Nano titanium dioxide 5 is housed, in reaction tower 3, pass into oxygen by roots blower 2, under the irradiation of UV-light, carry out phenol degrading 2h.
Waste water after degraded to storage receptacle 4, treats subsequent disposal through Cemented filling.
 
After testing, the method Pyrogentisinic Acid waste water of process phenolic waste water provided by the invention is adopted to process, treatment effect is good, average COD after phenolic waste water average COD before treatment (chemical oxygen demand (COD)) and phenol concentration are respectively 433.7mg/l and 195 mg/l, process and phenol concentration are respectively the average removal rate of 78.5mg/l and 1.09 mg/l, COD and phenol up to 81.6% and 99.5%.
 
Be described in detail specific embodiments of the invention above, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and substituting also all among category of the present invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.

Claims (10)

1. process a method for phenolic waste water, it is characterized in that, comprise the following steps:
Step 1, passes into dioxide peroxide in phenolic waste water, makes it fully mix;
Step 2, the phenolic waste water after step 1 being processed flows into the reaction tower that activated carbon supported catalyst of Nano titanium dioxide is housed;
Step 3, passes into oxygen in reaction tower, under the irradiation of UV-light, carries out phenol degrading.
2. method according to claim 1, is characterized in that, described dioxide peroxide reacts obtained by sodium chlorate and hydrochloric acid in the filler chamber of chlorine dioxide reaction device.
3. method according to claim 1, is characterized in that, in the phenolic waste water after step 1 processes, the concentration of dioxide peroxide is 0.5-5mg/L.
4. method according to claim 1, is characterized in that, described in step 2, activated carbon supported catalyst of Nano titanium dioxide is prepared as follows:
A. by Nano titanium dioxide powder dispersion containing in the mixed solution of granulated active carbon, soak after 1-50h, filter, by solid drying, roasting;
B. the solid after roasting is immersed in the filtrate of filtering and obtaining, after soaking 1-50h, filters, by solid drying, roasting;
C. repeating step b at least 1 time.
5. method according to claim 4, is characterized in that, step c is: step b repeats 8-10 time.
6. according to the method in claim 1-5 described in any one, it is characterized in that, in described activated carbon supported catalyst of Nano titanium dioxide, the content of titanium dioxide is 2-10wt%.
7. according to the method in claim 1-5 described in any one, it is characterized in that, the surface-area > 1000m of gac in described activated carbon supported catalyst of Nano titanium dioxide 2/ g.
8. method according to claim 1, is characterized in that, in step 3, the time of carrying out phenol degrading is 0.5-5h.
9. one kind processes the device of phenolic waste water, it is characterized in that, comprise mixing vessel, reaction tower, blower fan and storage receptacle, wherein, described mixing vessel passes through to be connected with the fluid inlet of reaction tower, described blower fan is connected with the inlet mouth of reaction tower, and described storage receptacle is connected with the liquid outlet of reaction tower, and described reaction tower is built with activated carbon supported catalyst of Nano titanium dioxide.
10. device according to claim 9, is characterized in that, the bottom of described reaction tower is provided with aeration head.
CN201310293233.0A 2013-07-14 2013-07-14 Method for treating phenolic waste water Pending CN104276705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310293233.0A CN104276705A (en) 2013-07-14 2013-07-14 Method for treating phenolic waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310293233.0A CN104276705A (en) 2013-07-14 2013-07-14 Method for treating phenolic waste water

Publications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347561A (en) * 2015-11-26 2016-02-24 常州大学 Integrated device for purifying phenol-containing geothermal water
CN106882886A (en) * 2017-03-22 2017-06-23 安徽新天安全环境科技有限公司 The deep treatment method of low-concentration industrial sewage
CN107352683A (en) * 2017-07-28 2017-11-17 浙江奇彩环境科技股份有限公司 A kind of handling process of disperse red 60 production waste water
CN108996653A (en) * 2018-07-03 2018-12-14 江苏开放大学(江苏城市职业学院) It is a kind of to utilize UV/Na2SO3The method that collaboration system carries out reduction dechlorination to 4- chlorophenol
CN111573930A (en) * 2020-05-20 2020-08-25 山东大学 Visible light photocatalysis-ClO2Method for efficiently removing organic pollutants in wastewater by oxidation combined process

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Publication number Priority date Publication date Assignee Title
CN100998934A (en) * 2006-10-13 2007-07-18 中国石油大学(华东) Loading type photocatalyst for treating phenol liguid phase pollutant and its preparation method and application
CN101670282A (en) * 2009-10-19 2010-03-17 浙江博华环境技术工程有限公司 Preparation method of load type nano titanium dioxide catalyst
CN201520693U (en) * 2009-10-19 2010-07-07 浙江博华环境技术工程有限公司 Phenol wastewater treatment system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100998934A (en) * 2006-10-13 2007-07-18 中国石油大学(华东) Loading type photocatalyst for treating phenol liguid phase pollutant and its preparation method and application
CN101670282A (en) * 2009-10-19 2010-03-17 浙江博华环境技术工程有限公司 Preparation method of load type nano titanium dioxide catalyst
CN201520693U (en) * 2009-10-19 2010-07-07 浙江博华环境技术工程有限公司 Phenol wastewater treatment system

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Title
周广阔: "活性炭负载纳米TiO2光催化降解苯酚的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347561A (en) * 2015-11-26 2016-02-24 常州大学 Integrated device for purifying phenol-containing geothermal water
CN106882886A (en) * 2017-03-22 2017-06-23 安徽新天安全环境科技有限公司 The deep treatment method of low-concentration industrial sewage
CN107352683A (en) * 2017-07-28 2017-11-17 浙江奇彩环境科技股份有限公司 A kind of handling process of disperse red 60 production waste water
CN108996653A (en) * 2018-07-03 2018-12-14 江苏开放大学(江苏城市职业学院) It is a kind of to utilize UV/Na2SO3The method that collaboration system carries out reduction dechlorination to 4- chlorophenol
CN111573930A (en) * 2020-05-20 2020-08-25 山东大学 Visible light photocatalysis-ClO2Method for efficiently removing organic pollutants in wastewater by oxidation combined process

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Application publication date: 20150114