CN110104759A - A kind of efficient ozone catalytic oxidation technique and its processing system - Google Patents
A kind of efficient ozone catalytic oxidation technique and its processing system Download PDFInfo
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- CN110104759A CN110104759A CN201910480049.4A CN201910480049A CN110104759A CN 110104759 A CN110104759 A CN 110104759A CN 201910480049 A CN201910480049 A CN 201910480049A CN 110104759 A CN110104759 A CN 110104759A
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- Prior art keywords
- ozone
- catalytic oxidation
- technique
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- concentrated
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Classifications
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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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
Abstract
The invention discloses a kind of efficient ozone catalytic oxidation techniques, the technique produces ozone using high-voltage corona discharge, enter ozone upgrading unit after obtaining ozonated air, enters catalytic oxidation unit after being sufficiently mixed after ozonated air is concentrated by air dissolved pump and waste water；The invented technology is concentrated using the ozone that principle of pressure swing adsorption generates ozone generator, it can get high-concentrated ozone, ozone concentration promotes 3-8 times, replace traditional aeration system using air dissolved pump, air dissolved pump can convert the ozone to microbubble, it is sufficiently mixed with waste water, the contact area of ozone and waste water greatly increases, and effectively improves ozone utilization rate.In identical ozone dosage, can have and COD removal rate is improved into 10%-30%.
Description
Technical field
The invention belongs to sewage advanced treatment field more particularly to a kind of efficient ozone catalytic oxidation technique and its processing systems
System.
Background technique
The waste water of the industries such as chemical industry, medicine, printing and dyeing, papermaking can also have after biochemical treatment containing some difficult to degrade
Machine object includes mainly some heterocyclic arenes, polycyclic aromatic hydrocarbon and long-chain compound etc., these organic matters can make the coloration of bio-chemical effluent
And the indexs such as COD are unable to reach discharge or Treatment for Reuse, therefore bio-chemical effluent also needs to carry out advanced treating, to meet reuse standard
Or increasingly strict discharge standard.
It is directed to the advanced treating of bio-chemical effluent at present, mainly uses oxidative treatment.Oxidizing process is to utilize strong oxidizer oxygen
Change and decomposes water pollutant, the method to purify waste water.It mainly include Fenton oxidation, photochemical catalytic oxidation, electrochemical oxidation, ozone
Catalysis oxidation etc..Ozone can effectively aoxidize hardly degraded organic substance as a kind of strong oxidizer, it not only can be with oxygenolysis
Hardly degraded organic substance in water reduces toxicity, also excellent bactericidal property, therefore extensive to make water body decolouring and deodorizing
The advanced treating applied to industrial wastewater.Catalytic ozonation tower is using a kind of relatively more extensive catalytic ozonation dress
It sets, advanced oxidation occurs using ozone in it under the catalysis of catalyst, to complete the oxidation to hardly degraded organic substance.But it
The problems such as treatment effeciency is limited by ozone concentration, and low there are ozone utilization rate, thus how to improve the work of catalysis oxidizing tower
Efficiency receives significant attention.
CN204569528U discloses a kind of ozone-oxidizing device, which can increase ozone and the mixing of waste water is imitated
Fruit promotes ozone utilization rate, reduces ozone dosage.Not but the problem of device does not account for catalyst, only merely using smelly
Oxygen, oxidation efficiency be not high.
CN204265513U discloses a kind of heterocatalysis ozone-oxidizing device, which can be increased smelly using plural serial stage
The contact time and contact area of oxygen and waste water, while ozonation aerated amount can be adjusted for waste water, reasonable employment reduces
Ozone-depleting.But the device still uses traditional aeration mode, so limited efficacy.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of efficient ozone catalytic oxidation technique and its processing system, the technique
Mainly ozone is concentrated in the way of pressure-variable adsorption, the ozone after concentration can be improved 3-8 times, then pass through air dissolved pump and waste water
It is sufficiently mixed, the mixed further catalytic oxidation treatment of waste water can have in identical ozone dosage by COD
Removal rate improves 10%-30%.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of efficient ozone catalytic oxidation technique, which is characterized in that use high-voltage corona discharge to produce by ozone generator smelly
Oxygen enters ozone upgrading unit after obtaining ozonated air, is filled after ozonated air is concentrated by air dissolved pump and waste water
Enter catalytic oxidation unit after dividing mixing.
The ozone upgrading unit carries out ozone concentration by the way of pressure-variable adsorption, i.e., ozonated air is passed through absorption
Agent adsorption of oxygen obtains high-concentrated ozone, and 3-8 times, i.e. 300-800mg/L can be improved in ozone concentration, leads to after adsorbent saturation
Pressure-swing desorption is crossed, the oxygen of absorption is released, regenerates adsorbent；The adsorbent is zeolite molecular sieve or carbon molecules
Sieve.
The high-concentrated ozone that ozone concentration generates enters catalysis oxidation list after being sufficiently mixed by air dissolved pump and waste water
Member.
The gas liquid ratio of high-concentrated ozone gas and waste water is 1:8-1:12.
In catalytic oxidation unit, through catalyst action catalytic oxidation occurs for mixed waste water.
The catalytic oxidation unit is preferably catalysis oxidizing tower.
In catalysis oxidizing tower, retention time of sewage 20-120min.
The system comprises sequentially connected ozone generating unit, ozone upgrading unit, gas-liquid mixed unit and catalysis oxygen
Change unit.
Compared with prior art, the invention has the following advantages:
(1) it is concentrated using the ozone that principle of pressure swing adsorption generates ozone generator, can get high-concentrated ozone, ozone is dense
Degree promotes 3-8 times, can effectively improve ozone oxidation reaction efficiency and removal effect；
(2) traditional aeration system is replaced using air dissolved pump, air dissolved pump can convert the ozone to microbubble, carry out with waste water
It is sufficiently mixed, the contact area of ozone and waste water greatly increases, and effectively improves ozone utilization rate.In identical ozone dosage feelings
Under condition, can have and COD removal rate is improved into 10%-30%.
Detailed description of the invention
Fig. 1 is efficient ozone catalytic oxidation technique flow chart of the present invention.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, of the invention is typical but non-limiting
Embodiment it is as follows:
As shown in Figure 1, a kind of efficient ozone catalytic oxidation technique, uses high-voltage corona discharge to produce smelly by ozone generator
Oxygen enters ozone upgrading unit after obtaining ozonated air, is filled after ozonated air is concentrated by air dissolved pump and waste water
Enter catalytic oxidation unit after dividing mixing.
Wherein, ozone upgrading unit carries out ozone concentration by the way of pressure-variable adsorption, i.e., ozonated air is passed through suction
Attached dose of adsorption of oxygen obtains high-concentrated ozone, and 3-8 times, i.e. 300-800mg/L can be improved in ozone concentration, after adsorbent saturation
By pressure-swing desorption, the oxygen of absorption is released, adsorbent is regenerated.The adsorbent is zeolite molecular sieve or carbon molecules
Sieve.
The high-concentrated ozone that ozone concentration generates enters catalysis oxidation list after being sufficiently mixed by air dissolved pump and waste water
Member.
The gas liquid ratio of high-concentrated ozone gas and waste water is 1:8,1:9,1:10,1:11,1:12.
In catalytic oxidation unit, through catalyst action catalytic oxidation occurs for mixed waste water.
The catalytic oxidation unit is preferably catalysis oxidizing tower.
In catalysis oxidizing tower, retention time of sewage 20-120min, 20min, 25min, 30min, 35min,
40min、50min、60min、70min、80min、90min、100min、110min、120min。
A kind of processing system using above-mentioned technique, the system include that sequentially connected ozone generating unit, ozone are dense
Contracting unit, gas-liquid mixed unit and catalytic oxidation unit.
Embodiment 1
Certain coking wastewater biochemistry pool bio-chemical effluent COD is 130mg/L, using conventional catalytic ozonation process:
1. producing ozone using high-voltage corona discharge by ozone generator, ozonated air is obtained, gas source is oxygen, and gained is smelly
Ozone concentration is 100mg/L in oxidizing gas.
2. ozonated air made from step 1 is entered in catalytic ozonation tower by aeration mode, ozone dosage is
Through catalyst action catalytic oxidation occurs for 75g/t water, retention time of sewage 60min,.
Catalytic ozonation tower water outlet COD can be down to 75mg/L, and COD removal rate is 42.3%.
Embodiment 2
1 waste water of embodiment is handled using present invention process:
1. producing ozone using high-voltage corona discharge by ozone generator, ozonated air is obtained, gas source is oxygen, and gained is smelly
Ozone concentration is 100mg/L in oxidizing gas.
2. ozonated air made from step 1 enters ozone upgrading unit by pipeline, the unit is former using pressure-variable adsorption
The gases such as oxygen in ozonated air are passed through carbon molecular sieve adsorbent absorption, the high-concentrated ozone gas of acquisition, ozone by reason
It is 600mg/L that concentration, which improves 6 times, by pressure-swing desorption after adsorbent saturation, releases the oxygen of absorption, obtains adsorbent
Regeneration.
3. the high-concentrated ozone gas that step 2 obtains is mixed with waste water by air dissolved pump, gas-liquid mixture ratio is 1:
8, calculating to ton water-ozone dosage is 75g/t water.
4. the composite waste that step 3 obtains is urged in the catalysis oxidizing tower of catalytic oxidation unit through catalyst action
Oxidation, retention time of sewage 60min.
Catalytic ozonation tower water outlet COD can be down to 58mg/L, and COD removal rate is 55.4%, and the COD compared to embodiment 1 is gone
Except rate improves 13.1%.
Embodiment 3
Certain coking wastewater biochemistry pool bio-chemical effluent COD is 150mg/L, using conventional catalytic ozonation process:
1. producing ozone using high-voltage corona discharge by ozone generator, ozonated air is obtained, gas source is oxygen, and gained is smelly
Ozone concentration is 120mg/L in oxidizing gas.
2. ozonated air made from step 1 is entered in catalytic ozonation tower by aeration mode, ozone dosage is
Through catalyst action catalytic oxidation occurs for 107g/t water, retention time of sewage 80min,.
Catalytic ozonation tower water outlet COD can be down to 86mg/L, and COD removal rate is 42.7%.
Embodiment 4
3 waste water of embodiment is handled using present invention process,
1. producing ozone using high-voltage corona discharge by ozone generator, ozonated air is obtained, gas source is oxygen, and gained is smelly
Ozone concentration is 120mg/L in oxidizing gas.
2. ozonated air made from step 1 enters ozone upgrading unit by pipeline, the unit is former using pressure-variable adsorption
The gases such as oxygen in ozonated air are passed through carbon molecular sieve adsorbent absorption, the high-concentrated ozone gas of acquisition, ozone by reason
It is 960mg/L that concentration, which improves 8 times, by pressure-swing desorption after adsorbent saturation, releases the oxygen of absorption, obtains adsorbent
Regeneration.
3. the high-concentrated ozone gas that step 2 obtains is mixed with waste water by air dissolved pump, gas-liquid mixture ratio is 1:
9, calculating to ton water-ozone dosage is 107g/t water.
4. the composite waste that step 3 obtains is urged in the catalysis oxidizing tower of catalytic oxidation unit through catalyst action
Oxidation, retention time of sewage 80min.
Catalytic ozonation tower water outlet COD can be down to 61mg/L, and COD removal rate is 59.3%, and the COD compared to embodiment 1 is gone
Except rate improves 16.6%.
The Applicant declares that the present invention is explained by the above embodiments method detailed of the invention, but the present invention not office
Be limited to above-mentioned method detailed, that is, do not mean that the invention must rely on the above detailed methods to implement.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention
Addition, selection of concrete mode etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (8)
1. a kind of efficient ozone catalytic oxidation technique, which is characterized in that produced by ozone generator using high-voltage corona discharge
Ozone enters ozone upgrading unit after obtaining ozonated air, is carried out after ozonated air is concentrated by air dissolved pump and waste water
Enter catalytic oxidation unit after being sufficiently mixed.
2. technique as described in claim 1, which is characterized in that the ozone upgrading unit is carried out by the way of pressure-variable adsorption
Ozone concentration, i.e., obtain high-concentrated ozone by adsorbent adsorption of oxygen for ozonated air, and ozone concentration can be improved 3-8 times,
That is 300-800mg/L releases the oxygen of absorption, regenerates adsorbent by pressure-swing desorption after adsorbent saturation；Institute
Stating adsorbent is zeolite molecular sieve or carbon molecular sieve.
3. technique as claimed in claim 2, which is characterized in that the high-concentrated ozone that ozone concentration generates is by air dissolved pump and gives up
Water enters catalytic oxidation unit after being sufficiently mixed.
4. technique as claimed in claim 3, which is characterized in that the gas liquid ratio of high-concentrated ozone gas and waste water is 1:8-1:
12。
5. technique as claimed in claim 4, which is characterized in that mixed waste water is made in catalytic oxidation unit through catalyst
With generation catalytic oxidation.
6. technique as claimed in claim 5, which is characterized in that the catalytic oxidation unit is preferably catalysis oxidizing tower.
7. technique as claimed in claim 6, which is characterized in that in catalysis oxidizing tower, retention time of sewage 20-
120min。
8. a kind of processing system for the technique as described in any claim in claim 1-7, which is characterized in that the system
System includes sequentially connected ozone generating unit, ozone upgrading unit, gas-liquid mixed unit and catalytic oxidation unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910480049.4A CN110104759A (en) | 2019-06-04 | 2019-06-04 | A kind of efficient ozone catalytic oxidation technique and its processing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114426352A (en) * | 2020-09-28 | 2022-05-03 | 中国石油化工股份有限公司 | Coking wastewater treatment device and method |
| CN115536184A (en) * | 2022-11-02 | 2022-12-30 | 哈尔滨工业大学 | Integrated treatment device for town drinking water by combining micro-nano bubble ozone oxidation and electric flocculation and water treatment method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0550152A1 (en) * | 1991-12-13 | 1993-07-07 | The BOC Group plc | Treatment of water with ozone |
| CN101921041A (en) * | 2010-06-30 | 2010-12-22 | 深圳市深港产学研环保工程技术股份有限公司 | Ozone production method and sewage treatment method |
| CN102616882A (en) * | 2012-03-31 | 2012-08-01 | 四川省科学城中心科技有限公司 | Advanced wastewater treatment system by aid of ozone and microwave ultraviolet light oxidation |
| CN102976275A (en) * | 2012-11-12 | 2013-03-20 | 蹇守民 | Device for preparing high-concentration ozone and recycling residual oxygen |
| CN202924812U (en) * | 2012-11-14 | 2013-05-08 | 北京赛科康仑环保科技有限公司 | Organic wastewater ozone catalytic oxidation treatment device |
-
2019
- 2019-06-04 CN CN201910480049.4A patent/CN110104759A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0550152A1 (en) * | 1991-12-13 | 1993-07-07 | The BOC Group plc | Treatment of water with ozone |
| CN101921041A (en) * | 2010-06-30 | 2010-12-22 | 深圳市深港产学研环保工程技术股份有限公司 | Ozone production method and sewage treatment method |
| CN102616882A (en) * | 2012-03-31 | 2012-08-01 | 四川省科学城中心科技有限公司 | Advanced wastewater treatment system by aid of ozone and microwave ultraviolet light oxidation |
| CN102976275A (en) * | 2012-11-12 | 2013-03-20 | 蹇守民 | Device for preparing high-concentration ozone and recycling residual oxygen |
| CN202924812U (en) * | 2012-11-14 | 2013-05-08 | 北京赛科康仑环保科技有限公司 | Organic wastewater ozone catalytic oxidation treatment device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114426352A (en) * | 2020-09-28 | 2022-05-03 | 中国石油化工股份有限公司 | Coking wastewater treatment device and method |
| CN115536184A (en) * | 2022-11-02 | 2022-12-30 | 哈尔滨工业大学 | Integrated treatment device for town drinking water by combining micro-nano bubble ozone oxidation and electric flocculation and water treatment method thereof |
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Application publication date: 20190809 |