CN105000728A - Method and device for deeply treating oil refinery wastewater through ultraviolet and catalytic ozonation - Google Patents
Method and device for deeply treating oil refinery wastewater through ultraviolet and catalytic ozonation Download PDFInfo
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- CN105000728A CN105000728A CN201510345549.9A CN201510345549A CN105000728A CN 105000728 A CN105000728 A CN 105000728A CN 201510345549 A CN201510345549 A CN 201510345549A CN 105000728 A CN105000728 A CN 105000728A
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Abstract
The invention provides a method and device for deeply treating oil refinery wastewater through ultraviolet and catalytic ozonation. The method comprises the steps that the oil refinery wastewater and ozone are mixed through a gas-liquid mixing pump to obtain milky gas-liquid mixing pump yielding water which is rich in ozone microbubbles; the gas-liquid mixing pump yielding water enters a reaction tower of which the upper portion is loaded with an ozone catalyst to react, the reaction tower achieves upper input and lower output, a oxidative degradation reaction is firstly performed on the lower portion of the reaction tower, then a catalytic oxidation is performed on the upper portion of the reaction tower to degrade organic pollutants in the wastewater, reaction tower yielding water is conveyed into an enhancement reactor with a high intensity ultraviolet lamp to perform an ultraviolet-ozone co-oxidation reaction to degrade the pollutants, and yielding water meeting the standard is obtained. According to the method, the dissolving efficiency of the ozone in the wastewater can be improved, the oxidation performance of the ozone is enhanced, the energy of the high intensity ultraviolet lamp can be efficiently utilized, and therefore the oil refinery wastewater can meet the standard and then be drained after being deep treated; the device has the advantages of being low in investment and operation cost.
Description
Technical field
What the present invention relates to is a kind of method of wastewater treatment, is a kind of method and device of ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater specifically.
Background technology
Along with the increasingly stringent of environmental requirement, oil refining wastewater emission request promotes further, and after process, efflux wastewater COD concentration requirement carries mark to 40mg/L from 60mg/L, and be even 30mg/L, therefore each enterprise wastewater advanced treatment is extremely urgent.At present comparatively conventional deep treatment method comprises the various advanced oxidation processes such as catalytic ozonation, catalytic oxidation, Fenton oxidation, microwave oxidation, but along with the further reduction of COD concentration, polytechnic energy consumption, running cost all can significantly promote.Therefore, consider each high-level oxidation technology effectively to combine, produce the effect of synergistic oxidation, thus ensureing, under the prerequisite that wastewater treatment is up to standard, to reduce investment and running cost as far as possible.
Summary of the invention
The object of this invention is to provide that a kind of efficiency is higher, the method for the treatment of effect better ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater and device.
The present invention is a kind of method of ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater, and the method comprising the steps of:
1) oil refining wastewater mixed by gas-liquid mixing pump with ozone, obtain oyster white, be rich in the gas-liquid mixing pump water outlet that diameter is the ozone microbubble of 20-30 μm;
2) described gas-liquid mixing pump water outlet enters upper load has in the reaction tower of ozone catalyst and reacts, described reaction tower water (flow) direction is bottom in and top out, first carry out oxidative degradation in reaction tower bottom, after to carry out in catalyzing oxidizing degrading waste water organic pollutant on reaction tower top;
3) reaction tower water outlet is sent into be provided with in the enhanced reactor of high intensity ultraviolet lamp and is carried out UV-ozone synergistic oxidation reaction degradation of contaminant, obtains water outlet up to standard.
Present invention also offers a kind of advanced treatment oil refining wastewater device realizing aforesaid method, this device is primarily of the raw water box connected successively, gas-liquid mixing pump, reaction tower, working shaft, enhanced reactor, product water tank, product water pump composition, wherein also be provided with ozonizer between raw water box and gas-liquid mixing pump, described reaction tower is bottom in and top out, and the upper load of reaction tower has ozone catalyst, high intensity ultraviolet lamp is provided with in enhanced reactor, its wavelength is 180-190nm, and power is 10-12kw.
The ozone oxidation degradation process of the inventive method is carried out in two steps, the ozone first utilizing reaction tower bottom to dissolve is removed pollutent and is carried out oxidative degradation, top ozone catalyst is recycled along with current rise, increase the ozone residence time on the one hand, another aspect ozone catalyst impels the ozone generation hydroxyl radical free radical dissolved in water, and the non-selectivity utilizing it to be oxidized removes pollutent further.Particularly preferred version, being obtained by gas-liquid mixing pump is the water outlet of 20-30 μm of ozone microbubble containing diameter, further increase is given up the solubleness of ozone in water, in addition, when ozone microbubble is incorporated into reaction tower top gradually with current rising, the bubble merged rises from catalyzer gap baffling, adds the residence time of bubble, is conducive to the further dissolving of ozone.The reaction of UV ozone synergistic oxidation is carried out in enhanced reactor, and high intensity ultraviolet lamp photochmeical reaction occurs in water and produces hydroxyl radical free radical, produces ozone, by both synergy degradable organic pollutants with oxygen effect simultaneously.
Compared with prior art, its beneficial effect is the method for a kind of ultraviolet synergy ozone of the present invention catalyzed oxidation advanced treatment oil refining wastewater:
The inventive method can improve the dissolved efficiency of ozone in waste water, strengthens its oxidation susceptibility, again can the energy of efficiency utilization high intensity ultraviolet lamp, thus realizes the advanced treatment of oil refining wastewater, meets the environmental requirement of increasingly stringent; Advanced treatment oil refining wastewater device of the present invention decapacitation realizes outside the advanced treatment of oil refining wastewater, also has the advantage that investment is low and running cost is low.
Accompanying drawing explanation
Accompanying drawing 1 is the process flow diagram of the method for ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater of the present invention:
Wherein 1-raw water box, 2-gas-liquid mixing pump, 3-reaction tower, 4-ozonizer, 5-working shaft, 6-enhanced reactor, 7-high intensity ultraviolet lamp, 8-produces water tank, and 9-produces water pump, 10-catalyzer.
Embodiment
Fig. 1 is the process flow diagram of the embodiment of the method for ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater of the present invention.As can be seen from Figure 1, ozonizer 4 produce ozone and raw water box 1 in waste water enter in reaction tower 3 by gas-liquid mixing pump 2, gas-liquid mixing pump 2 water outlet is creamy white, ozone microbubble diameter is 20-30 μm, this removal of ozone microbubble pollutent of high-dissolvability is utilized in second tower of reaction tower 3, but along with current rise, bubble merges gradually, efficient ozone catalyzer 10 is filled with at first tower of reaction tower 3, ozone catalyst 10 has two effects: one is that the bubble merged rises from catalyzer gap baffling, add the residence time of bubble, be conducive to the further dissolving of ozone, two is that ozone catalyst 10 impels the ozone generation hydroxyl radical free radical (OH) dissolved in water, and the non-selectivity utilizing it to be oxidized will remove pollutent further.Therefore, in reaction tower 3, utilize the process of the strong oxidizing property degradable organic pollutant of ozone to mainly contain two kinds of approach, one is that ozone participates in reaction directly by nucleophilic or close electro ultrafiltration, and two is the active hydroxyl radical free radical (OH) and pollutant reaction that produce.The water outlet of reaction tower 3 is sent in enhanced reactor 6 by working shaft 5 and is carried out UV-ozone synergistic oxidation reaction degradation of contaminant, in enhanced reactor 6, photochmeical reaction is there is and produces hydroxyl radical free radical (OH) in high intensity ultraviolet lamp 7 in water, produce ozone with oxygen effect, by both synergy degradable organic pollutants simultaneously.Enhanced reactor 6 water outlet overflows to produces in water tank 8, by producing water pump 9 standard discharge.
Embodiment one:
Shaanxi refinery factory, day process oil refining wastewater 600m
3outer draining COD, between 55-60mg/L, proposes the requirement of mark transformation, outer draining COD requirement≤40mg/L for meeting wastewater treatment, adopt the method for ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater of the present invention to carry out field pilot test test, device processing power is 10m
3/ h, when concentration of ozone gas is 150mg/L, in enhanced reactor, retention time of sewage is that 20min, COD are down to 38mg/L from 60mg/L, meets the processing requirements after emission standard raising.
Embodiment two:
Shandong refinery factory, day process oil refining wastewater 1000m
3, after oil removing, flocculating settling, biochemistry, COD is down to below 60mg/L, faces the environmental protection policy of increasingly stringent, and in field, wastewater treatment field bio-chemical effluent need carry out advanced treatment, requires COD≤40mg/L.Adopt the method for ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater of the present invention to carry out field pilot test test, device processing power is 20m
3/ h, when concentration of ozone gas is 180mg/L, in enhanced reactor, retention time of sewage is that 30min, COD are down to 35-40mg/L from 60mg/L, meets the emission request after the raising of wastewater treatment field standard.
Embodiment three:
Gansu refinery factory, day process oil refining wastewater 2000m
3, after existing wastewater treatment, outer draining COD is between 55-60mg/L, for realizing, to he Western town protection, requiring that outer draining COD is down to below 30mg/L.Adopt the method for ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater of the present invention to carry out field pilot test test, device processing power is 15m
3/ h, when concentration of ozone gas is 200mg/L, in enhanced reactor, retention time of sewage is that 40min, COD are down to below 30mg/L from 60mg/L, meets the emission request after the raising of wastewater treatment field standard.
Claims (3)
1. a processing method for ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater, is characterized in that, comprise the following steps:
1) oil refining wastewater mixed by gas-liquid mixing pump with ozone, obtain oyster white, be rich in the gas-liquid mixing pump water outlet that diameter is the ozone microbubble of 20-30 μm;
2) described gas-liquid mixing pump water outlet enters upper load has in the reaction tower of ozone catalyst and reacts, described reaction tower water (flow) direction is bottom in and top out, first carry out oxidative degradation in reaction tower bottom, after to carry out in catalyzing oxidizing degrading waste water organic pollutant on reaction tower top;
3) reaction tower water outlet is sent into be provided with in the enhanced reactor of high intensity ultraviolet lamp and is carried out UV-ozone synergistic oxidation reaction degradation of contaminant, obtains water outlet up to standard.
2. a ultraviolet synergy ozone catalyzed oxidation advanced treatment oil refining wastewater, it is characterized in that, described device is primarily of the raw water box connected successively, gas-liquid mixing pump, reaction tower, working shaft, enhanced reactor, product water tank, product water pump composition, wherein also be provided with ozonizer between raw water box and gas-liquid mixing pump, described reaction tower is bottom in and top out, and the upper load of reaction tower has ozone catalyst, is provided with high intensity ultraviolet lamp in enhanced reactor.
3. device according to claim 2, is characterized in that, the wavelength of described high intensity ultraviolet lamp is 180-190nm, and power is 10-12kw.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106538934A (en) * | 2016-12-09 | 2017-03-29 | 华南理工大学 | A kind of ozone and ultraviolet Synergistic degradation biotoxin equipment |
| CN108706801A (en) * | 2018-07-23 | 2018-10-26 | 云南普发环境工程有限公司 | The ultraviolet device and method for strengthening ozone treatment country sewage is cooperateed with based on Hydrodynamic cavitation |
| CN108840466A (en) * | 2017-12-26 | 2018-11-20 | 中国矿业大学(北京) | A kind of reaction unit that O3 catalytic oxidation is coupled with ultraviolet Fenton oxidation |
| CN111661963A (en) * | 2020-05-20 | 2020-09-15 | 北京科技大学 | Device and method for treating non-ferrous metal ore dressing wastewater by ozone coupling ultraviolet irradiation |
| CN111732262A (en) * | 2020-07-15 | 2020-10-02 | 桂润环境科技股份有限公司 | Electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater and advanced treatment method of organic wastewater |
| CN114180670A (en) * | 2020-09-14 | 2022-03-15 | 北京航天凯恩化工科技有限公司 | Ozone micro-nano bubble wastewater treatment system and wastewater treatment method |
| CN114180746A (en) * | 2020-09-14 | 2022-03-15 | 北京航天凯恩化工科技有限公司 | Acidic wastewater treatment system and treatment method |
| CN115093046A (en) * | 2022-06-17 | 2022-09-23 | 天津正达科技有限责任公司 | Device and method for deeply removing refractory organic matters in high-salinity wastewater |
-
2015
- 2015-06-19 CN CN201510345549.9A patent/CN105000728A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106538934A (en) * | 2016-12-09 | 2017-03-29 | 华南理工大学 | A kind of ozone and ultraviolet Synergistic degradation biotoxin equipment |
| CN108840466A (en) * | 2017-12-26 | 2018-11-20 | 中国矿业大学(北京) | A kind of reaction unit that O3 catalytic oxidation is coupled with ultraviolet Fenton oxidation |
| CN108706801A (en) * | 2018-07-23 | 2018-10-26 | 云南普发环境工程有限公司 | The ultraviolet device and method for strengthening ozone treatment country sewage is cooperateed with based on Hydrodynamic cavitation |
| CN108706801B (en) * | 2018-07-23 | 2023-05-23 | 云南普发工程咨询有限公司 | Device and method for treating rural sewage based on hydrodynamic cavitation and ultraviolet strengthening ozone |
| CN111661963A (en) * | 2020-05-20 | 2020-09-15 | 北京科技大学 | Device and method for treating non-ferrous metal ore dressing wastewater by ozone coupling ultraviolet irradiation |
| CN111732262A (en) * | 2020-07-15 | 2020-10-02 | 桂润环境科技股份有限公司 | Electromagnetic enhanced ozone catalytic oxidation device for advanced treatment of organic wastewater and advanced treatment method of organic wastewater |
| CN114180670A (en) * | 2020-09-14 | 2022-03-15 | 北京航天凯恩化工科技有限公司 | Ozone micro-nano bubble wastewater treatment system and wastewater treatment method |
| CN114180746A (en) * | 2020-09-14 | 2022-03-15 | 北京航天凯恩化工科技有限公司 | Acidic wastewater treatment system and treatment method |
| CN115093046A (en) * | 2022-06-17 | 2022-09-23 | 天津正达科技有限责任公司 | Device and method for deeply removing refractory organic matters in high-salinity wastewater |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: CHINA NATIONAL OFFSHORE OIL Corp. Applicant after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: CHINA NATIONAL OFFSHORE OIL Corp. Applicant before: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Applicant before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. |
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Effective date of registration: 20161012 Address after: No. three road 300131 Tianjin city Hongqiao District dingzigu No. 85 Applicant after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: CHINA NATIONAL OFFSHORE OIL Corp. Applicant before: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant before: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. |
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Application publication date: 20151028 |