CN102070239A - Method for treating high-acidity heavy crude oil processing wastewater by catalytic oxidation with ozone - Google Patents
Method for treating high-acidity heavy crude oil processing wastewater by catalytic oxidation with ozone Download PDFInfo
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- CN102070239A CN102070239A CN 201110045629 CN201110045629A CN102070239A CN 102070239 A CN102070239 A CN 102070239A CN 201110045629 CN201110045629 CN 201110045629 CN 201110045629 A CN201110045629 A CN 201110045629A CN 102070239 A CN102070239 A CN 102070239A
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Abstract
The invention relates to a method for treating high-acidity heavy crude oil processing wastewater by catalytic oxidation with ozone, which is characterized in that high-acidity heavy crude oil processing wastewater is subjected to advanced treatment by catalytic oxidation with ozone under the conditions of normal temperature and pressure. The method comprises the following concrete steps: the biochemical effluent of high-acidity heavy crude oil processing wastewater is homogenized through a regulation basin (1), and enters a preaeration tank (4) through a water supply pump (3); the wastewater and ozone provided by an ozone generator (2) are thoroughly mixed to react in the preaeration tank (4); the effluent enters a catalytic oxidation reaction column (6) through a lifting pump (5), and flows into a clear water basin (7); and tail gases emitted by the preaeration tank (4) and the catalytic oxidation reaction column (6) enter a tail gas purifier (8), and the purified gas is emitted.
Description
Technical field
The present invention relates to the Treatment of Industrial Water technical field, handle the method for peracid heavy crude processing waste water for a kind of catalytic ozonation.
Background technology
The advanced treatment of peracid heavy crude processing waste water biochemistry pool water outlet is the difficult point of oil refining industry wastewater treatment, mainly contain Persistent organic pollutants such as naphthenic acid, toluene, oxyethane in these waste water, B/C only 0.01～0.02, belong to utmost point organic wastewater with difficult degradation thereby, also contain higher soluble solid, biochemical system is produced restraining effect, and treatment process such as traditional biochemistry are difficult to make its qualified discharge.Under the situation of traditional biochemical treatment poor effect, some enterprises adopt the method for activated carbon adsorption that it is carried out advanced treatment, though the water outlet after handling can qualified discharge, but because the activated carbon after saturated needs to change, and must handle as solid waste, therefore this method processing cost is very high, and workload is also big.
Summary of the invention
The present invention is the method that a kind of catalytic ozonation is handled peracid heavy crude processing waste water.It is characterized in that: under normal temperature and pressure conditions, adopt catalytic ozonation to peracid heavy crude processing waste water advanced treatment, concrete technical process is as follows: behind peracid heavy crude processing waste water bio-chemical effluent process equalizing tank 1 homogeneous, enter pre-exposure gas tank 4 through working shaft 3, water in jar with the ozone thorough mixing that provides by ozonizer 2, water outlet enters catalytic oxidation tower 6 through lift pump 5, and water outlet flows into clean water basin 7.Pre-exposure gas tank 4 and catalytic oxidation tower 6 discharge tail gas enter exhaust purifier 8, the purified gas discharging.
The wherein reverse contact of air water in the pre-exposure gas tank 4, and thorough mixing.Reverse osmosis concentrated water enters from the top, and flow out the bottom, ozone then expose to the sun from the bottom into.The dosage setting range of ozone in water is 0～30mg/L, and the hybrid reaction time in the pre-exposure gas tank is controlled at 15～60min.Loading catalyst in the catalytic oxidation tower 6, this catalyzer are to utilize modification γ-Al
2O
3As the carrier of wastewater treatment catalyst, have stronger cracking and open loop function, and effectively utilize the pore structure tunable characteristic, porous road type is made in the catalyzer duct, increased the contact area with waste water, accelerate the speed of catalyzed reaction; The biodegradable organic compounds loop chain is opened, further obtained oxidative degradation; The air speed variable range of catalytic oxidation tower 6 is 1.0～4.0h
-1,, make COD and petroleum-type pollutent obtain removing through adsorption and enrichment and catalysed oxidn.
Description of drawings
Accompanying drawing 1 is a kind of catalytic ozonation advanced treatment of the present invention peracid heavy crude processing waste water technology:
Wherein 1 is equalizing tank, and 2 is ozonizer, and 3 is working shaft, and 4 are the pre-exposure gas tank, and 5 is lift pump, and 6 is the catalytic oxidation tower, and 7 is clean water basin, and 8 is exhaust purifier.
Embodiment
Embodiment one:
The Guangdong refinery, day processing peracid heavy crude processing waste water 4800m
3, adopting oil removal-air supporting-acidication-bio-contact oxidation-MBR art breading, treat effluent still can't reach emission standard.Advanced treatment process adopts activated carbon adsorption to handle, and it is big to change the carbon amount, causes solid waste processing cost height.Adopt catalytic ozonation advanced treatment peracid heavy crude processing waste water of the present invention, when the dosage of ozone in water is controlled at 15～20mg/, the hybrid reaction time in the pre-exposure gas tank 4 is controlled at 25～30min, when the air speed in the catalytic oxidation tower 6 is controlled at 2.0～2.5h-1, water inlet COD is 138～256mg/L, petroleum-type 2.0～3.8mg/L, water outlet COD26～42mg/L, remove efficient greater than 80%, water outlet petroleum-type 0～0.2mg/L, clearance is far superior to the primary standard in the integrated wastewater discharge standard (GB8978-1996) greater than 90%.
Embodiment two:
The Zhejiang refinery, day processing peracid heavy crude processing waste water 500m
3, adopting oil removal-air supporting-SBR art breading, treat effluent still can't reach emission standard.Adopt catalytic ozonation advanced treatment peracid heavy crude processing waste water of the present invention, when the dosage of ozone in water is controlled at 10～15mg/L, the hybrid reaction time in the pre-exposure gas tank 4 is controlled at 20～25min, and the air speed in the catalytic oxidation tower 6 is controlled at 2.0～2.5h
-1The time, water inlet COD is 148～207mg/L, petroleum-type 4.3～6.5mg/L, water outlet COD 45～58mg/L removes efficient greater than 70%, water outlet petroleum-type 0～0.5mg/L, clearance has reached the primary standard in the integrated wastewater discharge standard (GB8978-1996) greater than 90%.
Embodiment three:
The Shandong refinery, day processing peracid heavy crude processing waste water 2500m
3, adopting oil removal-air supporting-MSBR art breading, treat effluent still can't reach emission standard.Adopt catalytic ozonation advanced treatment peracid heavy crude processing waste water of the present invention, when the dosage of ozone in water is controlled at 15～20mg/L, the hybrid reaction time in the pre-exposure gas tank 4 is controlled at 20～30min, and the air speed in the catalytic oxidation tower 6 is controlled at 2.5～3.0h
-1The time, water inlet COD is 208～226mg/L, petroleum-type 2.8～3.6mg/L, water outlet COD 48～60mg/L removes efficient greater than 75%, water outlet petroleum-type 0～0.2mg/L, clearance has reached the primary standard in the integrated wastewater discharge standard (GB8978-1996) greater than 90%.
Claims (1)
1. a catalytic ozonation is handled the method for peracid heavy crude processing waste water, it is characterized in that: under normal temperature and pressure conditions, adopt catalytic ozonation to peracid heavy crude processing waste water advanced treatment, concrete technical process is as follows: behind peracid heavy crude processing waste water bio-chemical effluent process equalizing tank (1) homogeneous, enter pre-exposure gas tank (4) through working shaft (3), water reacts with the ozone thorough mixing that is provided by ozonizer (2) in jar, water outlet enters catalytic oxidation tower (6) through lift pump (5), and water outlet flows into clean water basin (7); Pre-exposure gas tank (4) and catalytic oxidation tower (6) discharge tail gas enter exhaust purifier (8), the purified gas discharging;
The wherein reverse contact of the interior air water of pre-exposure gas tank (4), and thorough mixing; Reverse osmosis concentrated water enters from the top, and flow out the bottom, ozone then expose to the sun from the bottom into; The dosage setting range of ozone in water is 2～30mg/L, and the hybrid reaction time in the pre-exposure gas tank is controlled at 15～60min; Loading catalyst in the catalytic oxidation tower (6), this catalyzer is to utilize modification γ-Al
2O
3As the carrier of wastewater treatment catalyst, have stronger cracking and open loop function, and effectively utilize the pore structure tunable characteristic, porous road type is made in the catalyzer duct, increased the contact area with waste water, accelerate the speed of catalyzed reaction; The biodegradable organic compounds loop chain is opened, further obtained oxidative degradation; The air speed variable range of catalytic oxidation tower (6) is 1.0～4.0h
-1,, make COD and petroleum-type pollutent obtain removing through adsorption and enrichment and catalysed oxidn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110045629 CN102070239A (en) | 2011-02-25 | 2011-02-25 | Method for treating high-acidity heavy crude oil processing wastewater by catalytic oxidation with ozone |
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|---|---|---|---|
| CN 201110045629 CN102070239A (en) | 2011-02-25 | 2011-02-25 | Method for treating high-acidity heavy crude oil processing wastewater by catalytic oxidation with ozone |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102033A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Sulfur and ammonia-containing wastewater treatment method |
| CN103601340A (en) * | 2013-11-19 | 2014-02-26 | 天津中油科远石油工程有限责任公司 | Viscous-oil wastewater treating method |
| CN105330066A (en) * | 2015-11-20 | 2016-02-17 | 北京万邦达环保技术股份有限公司 | Color coating waste water treatment device and color coating waste water treatment method |
| CN105692865A (en) * | 2014-11-27 | 2016-06-22 | 中国海洋石油总公司 | Method for processing high-acid heavy crude oil processing wastewater |
| CN105692866A (en) * | 2014-11-27 | 2016-06-22 | 中国海洋石油总公司 | Packing method of catalyst for processing high-acid heavy crude oil processing wastewater |
| CN105692864A (en) * | 2014-11-27 | 2016-06-22 | 中国海洋石油总公司 | Method for processing wastewater |
| CN111689569A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Oil-containing sewage deep treatment device for finished oil depot and application thereof |
| CN113104950A (en) * | 2020-07-15 | 2021-07-13 | 昆山中环科本科技发展有限公司 | External catalyst ozone catalytic reactor and process thereof |
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| CN1506328A (en) * | 2002-12-06 | 2004-06-23 | 宁 李 | Sewage deeply treating process |
| CN101138698A (en) * | 2006-09-05 | 2008-03-12 | 中国石油天然气股份有限公司 | Method for purifying complex stink waste gas |
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| CN1506328A (en) * | 2002-12-06 | 2004-06-23 | 宁 李 | Sewage deeply treating process |
| CN101138698A (en) * | 2006-09-05 | 2008-03-12 | 中国石油天然气股份有限公司 | Method for purifying complex stink waste gas |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102033A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Sulfur and ammonia-containing wastewater treatment method |
| CN103102033B (en) * | 2011-11-10 | 2014-08-20 | 中国石油化工股份有限公司 | Sulfur and ammonia-containing wastewater treatment method |
| CN103601340A (en) * | 2013-11-19 | 2014-02-26 | 天津中油科远石油工程有限责任公司 | Viscous-oil wastewater treating method |
| CN105692865A (en) * | 2014-11-27 | 2016-06-22 | 中国海洋石油总公司 | Method for processing high-acid heavy crude oil processing wastewater |
| CN105692866A (en) * | 2014-11-27 | 2016-06-22 | 中国海洋石油总公司 | Packing method of catalyst for processing high-acid heavy crude oil processing wastewater |
| CN105692864A (en) * | 2014-11-27 | 2016-06-22 | 中国海洋石油总公司 | Method for processing wastewater |
| CN105692866B (en) * | 2014-11-27 | 2018-07-13 | 中国海洋石油集团有限公司 | A kind of packing method of the catalyst of processing high-acid heavy crude oil processing waste water |
| CN105692864B (en) * | 2014-11-27 | 2018-09-07 | 中国海洋石油集团有限公司 | A method of processing waste water |
| CN105692865B (en) * | 2014-11-27 | 2018-09-07 | 中国海洋石油集团有限公司 | A method of processing high-acid heavy crude oil processing waste water |
| CN105330066A (en) * | 2015-11-20 | 2016-02-17 | 北京万邦达环保技术股份有限公司 | Color coating waste water treatment device and color coating waste water treatment method |
| CN111689569A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Oil-containing sewage deep treatment device for finished oil depot and application thereof |
| CN113104950A (en) * | 2020-07-15 | 2021-07-13 | 昆山中环科本科技发展有限公司 | External catalyst ozone catalytic reactor and process thereof |
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Application publication date: 20110525 |