CN110342627A - Ozone catalytic oxidation advanced treatment method for biochemical effluent of chemical wastewater - Google Patents

Ozone catalytic oxidation advanced treatment method for biochemical effluent of chemical wastewater Download PDF

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Publication number
CN110342627A
CN110342627A CN201910494576.0A CN201910494576A CN110342627A CN 110342627 A CN110342627 A CN 110342627A CN 201910494576 A CN201910494576 A CN 201910494576A CN 110342627 A CN110342627 A CN 110342627A
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China
Prior art keywords
chemical
wastewater
treatment method
catalyst
ozone
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Pending
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CN201910494576.0A
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Inventor
滕月
刘志英
徐炎华
张蕴
姚科
宋文斌
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Nanjing Tech University
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Nanjing Tech University
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Priority to CN201910494576.0A priority Critical patent/CN110342627A/en
Publication of CN110342627A publication Critical patent/CN110342627A/en
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    • 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
    • C02F1/722Oxidation by peroxides
    • 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
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention relates to an ozone catalytic oxidation advanced treatment method for biochemical effluent of chemical wastewater. And (3) feeding biochemical effluent of the chemical wastewater into a reactor, adding a catalyst and hydrogen peroxide, and introducing ozone to perform heterogeneous catalytic ozonation reaction. The method can effectively remove organic pollutants with difficult toxicity degradation in the chemical wastewater biochemical effluent, reaches the discharge standard of coking chemical industry pollutants (GB 16171-2012), has no secondary pollution, realizes the recycling of the catalyst, and has wide application prospect.

Description

A kind of catalytic ozonation deep treatment method of chemical wastewater biochemical water outlet
Technical field
The present invention relates to a kind of processing method of chemical wastewater biochemical water outlet more particularly to a kind of water outlets of chemical wastewater biochemical Catalytic ozonation deep treatment method.
Background technique
Semi-coke wastewater is one kind of wastewater from chemical industry also referred to as semicoke waste water, is using coal as raw material, in, low temperature (500 DEG C~900 DEG C) destructive distillation, a series of industrial wastewaters that production semi-coke etc. generates in the process.Semi-coke wastewater is during generation Discharge amount is larger, and waste water quality is influenced by enterprise's coal chemical industry production technology.From the point of view of the comparison of conventional coking wastewater, in semi-coke wastewater The primary categories of pollutant are similar, wherein containing a large amount of phenolic compound, benzene compounds, heterocyclic compound, also contain one Part inorganic compound.But the concentration of pollutant will much be higher by conventional coking wastewater in semi-coke wastewater, be a kind of typical difficulty Biological treatment waste water.
At this stage, it is useless mainly to handle semi-coke using the method for " pretreatment+biological treatment " for the semi-coke manufacturing enterprise in China Water, such as Gas biological filter (BAF) and membrane bioreactor (MBR) etc..But since in process of production, semi-coke is useless Water water is more, water-quality constituents is complicated, variation water quality amplitude is violent, and bio-treatment Feasibility is poor, therefore bio-chemical effluent water quality is difficult Meet the standards such as discharge and reuse, therefore it is imperative to carry out advanced treating to the bio-chemical effluent of semi-coke wastewater.
Heterogeneous catalysis ozonation technology belongs to one kind of advanced oxidation processes, in recent years to be used to advanced treating coal more The biochemical tail water of chemical industry.This method is based on traditional Ozonation, and using the catalysis efficiency of catalyst, generates more The OH with strong oxidizing property, will effectively can solve the problems, such as that pollutant process is halfway at normal temperatures and pressures, mention simultaneously The utilization rate to ozone in the reaction is risen, the power consumption of production ozone devices is reduced, there is easy to operate, energy fast degradation pollution It object and does not cause the advantages that secondary pollution.
Summary of the invention
A kind of the smelly of chemical wastewater biochemical water outlet is provided the purpose of the invention is to improve the deficiencies in the prior art Oxygen catalysis oxidation deep treatment method.
The technical solution of the present invention is as follows: a kind of catalytic ozonation deep treatment method of chemical wastewater biochemical water outlet, Specific step is as follows: chemical wastewater biochemical being discharged and is sent into reactor, catalyst and hydrogen peroxide are added, it is non-to be passed through ozone progress Homogeneous catalysis ozone oxidation reaction.
It is preferred that the add quality and the volume ratio of chemical wastewater biochemical water outlet of the catalyst are 0.5~3.0g/L;Often The dosage of ozone is 30~60mg in the waste water COD of 100mg/L;The dosage of hydrogen peroxide in the waste water COD of every 1000mg/L For 1~3ml;Reaction time is 30~90min.
It is preferred that the wastewater from chemical industry is semi-coke wastewater, the COD of the bio-chemical effluent of semi-coke wastewater is 300~500mg/L;Volatilization Phenol is 10~30mg/L;Initial pH=4~9 of solution.
It is preferred that the catalyst is ferrimanganic metal composite oxide type catalyst MnFe2O4
The utility model has the advantages that
The present invention uses heterogeneous catalysis ozone oxidation advanced treating wastewater from chemical industry --- the bio-chemical effluent of semi-coke wastewater, benefit With the synergistic effect of ozone, catalyst and hydrogen peroxide, more hydroxyl radical free radicals are generated, oxidation-reduction potential 2.80eV, The toxicity persistent organic pollutants in semi-coke wastewater bio-chemical effluent can be effectively removed, CO is mineralized into2And H2O is reduced acute Toxicity, and do not cause secondary pollution.The semi-coke wastewater bio-chemical effluent of present invention process processing, COD removal rate volatilize up to 83.5% Phenol removal rate is up to 98.9%.Semi-coke wastewater bio-chemical effluent indices after processed by the invention reach " coking chemistry industry Pollutant emission standard " (GB 16171-2012).
Specific embodiment
Embodiment 1:
The semi-coke wastewater bio-chemical effluent of certain chemical company, specific water quality are shown in Table 1.The bio-chemical effluent of semi-coke wastewater is sent into anti- It answers in device, adds catalyst and hydrogen peroxide, be passed through ozone and carry out heterogeneous catalysis ozone oxidation reaction.Wherein catalyst adds Amount is 0.5g/L, is 30mg according to the dosage of ozone in the waste water COD of every 100mg/L, then ozone dosage is in this example 150mg, reaction time 30min, the dosage according to hydrogen peroxide in the waste water COD of every 1000mg/L are 1ml, then double in this example The dosage of oxygen water is about 0.3ml, the initial pH=4 of solution.Ferrimanganic metal composite oxide type catalyst MnFe2O4It is solidifying by colloidal sol The preparation of glue method, wherein calcining time is 4h, and maturing temperature is 400 DEG C.Final process water outlet reaches " coking chemistry industrial pollutants Discharge standard " (GB 16171-2012).The O3 catalytic oxidation effect of 1 waste water of embodiment is as shown in table 1.
Table 1
Embodiment 2:
The semi-coke wastewater bio-chemical effluent of certain chemical company, specific water quality are shown in Table 2.The bio-chemical effluent of semi-coke wastewater is sent into anti- It answers in device, adds catalyst and hydrogen peroxide, be passed through ozone and carry out heterogeneous catalysis ozone oxidation reaction.Wherein catalyst adds Amount is 2.0g/L, is 40mg according to the dosage of ozone in the waste water COD of every 100mg/L, then ozone dosage is in this example 200mg, reaction time 60min, the dosage according to hydrogen peroxide in the waste water COD of every 1000mg/L are 2ml, then double in this example The dosage of oxygen water is 0.8ml, the initial pH=7 of solution.Ferrimanganic metal composite oxide type catalyst MnFe2O4By collosol and gel Method preparation, wherein calcining time is 6h, and maturing temperature is 600 DEG C.Final process water outlet reaches " coking chemistry industrial pollutants row Put standard " (GB 16171-2012).The O3 catalytic oxidation effect of 2 waste water of embodiment is as shown in table 2.
Table 2
Embodiment 3:
The semi-coke wastewater bio-chemical effluent of certain chemical company, specific water quality are shown in Table 3.The bio-chemical effluent of semi-coke wastewater is sent into anti- It answers in device, adds catalyst and hydrogen peroxide, be passed through ozone and carry out heterogeneous catalysis ozone oxidation reaction.Wherein catalyst adds Amount is 3.0g/L, is 50mg according to the dosage of ozone in the waste water COD of every 100mg/L, then ozone dosage is in this example 300mg, reaction time 90min, the dosage according to hydrogen peroxide in the waste water COD of every 1000mg/L are 3ml, then double in this example The dosage of oxygen water is 1.5ml, the initial pH=9 of solution.Ferrimanganic metal composite oxide type catalyst MnFe2O4By collosol and gel Method preparation, wherein calcining time is 8h, and maturing temperature is 800 DEG C.Final process water outlet reaches " coking chemistry industrial pollutants row Put standard " (GB 16171-2012).The O3 catalytic oxidation effect of 3 waste water of embodiment is as shown in table 3.
Table 3

Claims (4)

1. a kind of catalytic ozonation deep treatment method of chemical wastewater biochemical water outlet, the specific steps of which are as follows: chemical industry is given up Water bio-chemical effluent is sent into reactor, and catalyst and hydrogen peroxide are added, and is passed through ozone and is carried out heterogeneous catalysis ozone oxidation reaction.
2. catalytic ozonation deep treatment method according to claim 1, it is characterised in that the throwing of the catalyst The volume ratio for adding quality and chemical wastewater biochemical to be discharged is 0.5~3.0g/L;Ozone adds in the waste water COD of every 100mg/L Amount is 30~60mg;The dosage of hydrogen peroxide is 1~3ml in the waste water COD of every 1000mg/L;Reaction time is 30~90min.
3. catalytic ozonation deep treatment method according to claim 1, it is characterised in that the wastewater from chemical industry is orchid Charcoal waste water, the COD of the bio-chemical effluent of semi-coke wastewater are 300~500mg/L;Volatile phenol is 10~30mg/L;The initial pH=4 of solution ~9.
4. catalytic ozonation deep treatment method according to claim 1, it is characterised in that the catalyst is iron Manganese metal composite oxide type catalyst MnFe2O4
CN201910494576.0A 2019-06-10 2019-06-10 Ozone catalytic oxidation advanced treatment method for biochemical effluent of chemical wastewater Pending CN110342627A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116510782A (en) * 2023-04-28 2023-08-01 浙江工业大学 ZIFs-derived core-shell magnetic nano ozone catalyst, preparation method and application

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376285A (en) * 1993-02-11 1994-12-27 Uop Oxidative removal of aqueous metal-complexed cyanide under acidic conditions
US20030102269A1 (en) * 2001-11-30 2003-06-05 Jim Bender Pulsed blackbody radiation flux enhancement
CN102151567A (en) * 2011-02-25 2011-08-17 哈尔滨工业大学 Catalyst for oxidation and decomposition of organic pollutants in water with ozone and method thereof for catalyzing sewage treatment with ozone
CN102161537A (en) * 2010-07-27 2011-08-24 王兵 Deep purification method of coking wastewater based on advanced ozone oxidation
CN104773930A (en) * 2015-04-30 2015-07-15 中国华电工程(集团)有限公司 Semi-coke waste water treatment system and technology
KR20170056155A (en) * 2015-11-13 2017-05-23 주식회사 코벡 Method of treating phenol-containing water
CN106882866A (en) * 2017-02-24 2017-06-23 河北科技大学 The method that hydrogen peroxide synergy ozone heterogeneous catalytic oxidation processes waste water
CN108928890A (en) * 2018-08-20 2018-12-04 四川大学 A kind of method of three-diemsnional electrode coupling oxidizer treatment used water difficult to degradate

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376285A (en) * 1993-02-11 1994-12-27 Uop Oxidative removal of aqueous metal-complexed cyanide under acidic conditions
US20030102269A1 (en) * 2001-11-30 2003-06-05 Jim Bender Pulsed blackbody radiation flux enhancement
CN102161537A (en) * 2010-07-27 2011-08-24 王兵 Deep purification method of coking wastewater based on advanced ozone oxidation
CN102151567A (en) * 2011-02-25 2011-08-17 哈尔滨工业大学 Catalyst for oxidation and decomposition of organic pollutants in water with ozone and method thereof for catalyzing sewage treatment with ozone
CN104773930A (en) * 2015-04-30 2015-07-15 中国华电工程(集团)有限公司 Semi-coke waste water treatment system and technology
KR20170056155A (en) * 2015-11-13 2017-05-23 주식회사 코벡 Method of treating phenol-containing water
CN106882866A (en) * 2017-02-24 2017-06-23 河北科技大学 The method that hydrogen peroxide synergy ozone heterogeneous catalytic oxidation processes waste water
CN108928890A (en) * 2018-08-20 2018-12-04 四川大学 A kind of method of three-diemsnional electrode coupling oxidizer treatment used water difficult to degradate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116510782A (en) * 2023-04-28 2023-08-01 浙江工业大学 ZIFs-derived core-shell magnetic nano ozone catalyst, preparation method and application

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Application publication date: 20191018

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