CN101973595A - Method for processing organic wastewater by azeotropy-steam distillation - Google Patents
Method for processing organic wastewater by azeotropy-steam distillation Download PDFInfo
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- CN101973595A CN101973595A CN 201010502207 CN201010502207A CN101973595A CN 101973595 A CN101973595 A CN 101973595A CN 201010502207 CN201010502207 CN 201010502207 CN 201010502207 A CN201010502207 A CN 201010502207A CN 101973595 A CN101973595 A CN 101973595A
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Abstract
The invention relates to a method for processing organic wastewater by azeotropy-steam distillation. The method is characterized by using the azeotropy-steam distillation method to heat directly by adding a rimming agent and steam so that organic matters and water in the wastewater form gas azeotrope and is then separated through condensation, therefore, the purpose of processing wastewater is achieved. The method is simple and economical, has the advantages of large operational flexibility and wide adaptability and is an effective method for processing organic wastewater.
Description
Technical field
The invention belongs to environmental protection technical field, relate to the method that azeotropic-steam distillation is handled organic waste water.
Background technology
In the big science field of environment protection, wastewater treatment, particularly treatment of Organic Wastewater are important problem all the time.Because organic of a great variety, character is different, will use different treatment processs at different organism.At present, the treatment process of organic waste water mainly contains biological process, physico-chemical process and oxidation style etc.Biological process is a method for processing organic wastewater the most widely, mainly comprises activated sludge process, biomembrance process, aerobic-anaerobic process etc.Mainly be the metabolism that utilizes microorganism, cohesion by microorganism, absorption, oxygenolysis etc. are used for the organism in the degrading waste water, has applied range, advantages such as the big and cost of treatment capacity is lower, but the versatility of microorganism is not strong and biochemical condition is harsh, particularly virose organism can make microorganism be poisoned to death etc., has greatly limited this The Application of Technology.Physico-chemical process mainly contains absorption method, extraction process, various membrane techniquies etc.Absorption method since exist the selection, desorb of sorbent material handle and use after technical problems such as manipulation of regeneration, its range of application is restricted.Because extraction process exists selection of Extractant and extraction agent residually makes the waste water after the processing be difficult to problems such as up to standard, can not use as single method.Application of membrane, the very big progress that has brought green technology really, but the immature property of membrane technique and processing costs height are insurmountable problem at short notice.The oxidation style technology is usually used in the pre-treatment of biological process, generally is under the effect of catalyzer, handle organic waste water with the raising wastewater biodegradability with chemical oxidizing agent, or the direct oxidation degradation of organic waste water makes it stabilization.Because the organic industrial sewage of bio-refractory is increasing in development of modern industry, it is not strong that oxygenant commonly used shows oxidation capacity, exists problems such as selective oxidation, is difficult to the requirement that reaches actual.Azeotropic of the present invention-steam distillation is handled the method for organic waste water, a kind of method for processing organic wastewater of simple and fast is provided, can be under loose operational condition, by the formed azeotrope of steam distillation, not only can reach the processing intent of waste water, and processing costs is greatly reduced, even produce positive economic benefit.
Summary of the invention
The object of the present invention is to provide azeotropic-steam distillation to handle the method for organic waste water, it is characterized in that adopting azeotropic-steam distillation, help boil agent and water vapor direct heating by adding, make organism and water in the waste water form the gas azeotrope, make organism and water sepn through condensation again, reach the purpose of wastewater treatment.The simple and direct economy of method for processing organic wastewater that provided is provided, even can produces positive economic benefit.
The present invention realizes by following step:
The first step, organic waste water is squeezed in the glass-lined kettle that condenser, water-and-oil separator and extraction reflux are housed, added and help the agent of boiling, regulate waste water and be neutral or near neutrality.
Second step, feed water vapor, regulate the size of throttle flow, the steam of azeotrope is evenly produced, and be complementary, timely extraction organic phase (oil) from water-and-oil separator, the water of total reflux institute condensation with the condensation ability of condenser.
The 3rd step, continue distillation, generate until no oil droplet, the total reflux of modify-water is full extraction, gets water sample detection in the still, stops distillation, the processing end after up to standard.
Embodiment
Below in conjunction with specific embodiment, the invention will be further elaborated, but the invention is not restricted to these specific embodiments.
Example one:
Acetaldehyde is under hydrochloric acid or Hydrogen bromide catalysis, and low temperature polymerization generates the methaldehyde and paraldehyde, uses a large amount of water washings in the process of the product separation methaldehyde.In the organic waste water that is produced, contain paraldehyde 3.8% approximately thus, the acetaldehyde 0.2% and the methaldehyde 0.4%.This waste water is acid, and pH is 3.2, COD value about 37000～43000 before handling.Adopt method of the present invention as follows to this treatment of Organic Wastewater situation:
In the 5000L glass-lined kettle that condenser, water-and-oil separator and backflow extraction device are housed, pump into the above-mentioned organic waste water of 4000L.Regulate wastewater pH ≈ 7 with yellow soda ash, applying pressure is 6kfg/cm
2The saturated vapor direct heating.After about 0.5 hour, waste water boiling in the still, the steam that is produced is through condenser condenses, profit layering in water trap, timely extraction oil phase, water total reflux.After about 1.5 hours, no longer include oil droplet in the steam condensate and generate, change full extraction oil phase and water.After about 2.0 hours, getting in the still water sample, to survey COD be 200.Stop logical steam, after the cooling, water 4200L in the discharging still.The organism 165kg of extraction contains paraldehyde 95%, after drying is handled, sends into production system as raw material and uses.Through adjusting, handle waste water per ton and produce 80 yuan of economic benefits.
Example two:
In 2-(4-2-bromomethylphenyl) propionic acid production process, with ethyl acetate and the thick product of sherwood oil mixed solvent recrystallization.Wash with water during separated product, contain ethyl acetate 0.5% in the waste water, sherwood oil 4.3%, pH are 2.7, and the COD value is 52700.Adopt the technology of the present invention, as follows to this treatment of Organic Wastewater situation:
In the 2000L glass-lined kettle that condenser, water-and-oil separator and backflow extraction device are housed, pump into the above-mentioned organic waste water of 1700L.Regulate wastewater pH ≈ 7 with yellow soda ash, applying pressure is the saturated vapor direct heating of 5.5kfg/cm2.After about 20 minutes, waste water boiling in the still, the steam that is produced is through condenser condenses, profit layering in water trap, timely extraction oil phase, water total reflux.After about 1.5 hours, no longer include oil droplet in the steam condensate and generate, change full extraction oil phase and water.After about 2.0 hours, getting in the still water sample, to survey COD be 310, stops logical steam, after the cooling, and water 1900L in the discharging still.The organism 73kg of extraction contains ethyl acetate 9.6%, sherwood oil 87.9%.After drying is handled, directly send into production system as mixed solvent and use.Through adjusting, handle waste water per ton and produce 30 yuan of economic benefits.
Example three:
A kind of organic waste water that contains dimethylbenzene and toluene contains dimethylbenzene 2.7% after testing in the waste water, toluene 1.1%, pH are 8.7, and the COD value is 34500.Adopt the technology of the present invention, as follows to this treatment of Organic Wastewater situation:
In the 2000L glass-lined kettle that condenser, water-and-oil separator and backflow extraction device are housed, pump into the above-mentioned organic waste water of 1600L.Regulate wastewater pH ≈ 7 with sulfuric acid, applying pressure is the saturated vapor direct heating of 6kfg/cm2.After about 0.5 hour, waste water boiling in the still, the steam that is produced is through condenser condenses, profit layering in water trap, timely extraction oil phase, water total reflux.After about 1.5 hours, no longer include oil droplet in the steam condensate and generate, change full extraction oil phase and water.After about 2.0 hours, getting in the still water sample, to survey COD be 180, stops logical steam, after the cooling, and water 1900L in the discharging still.The organism 56kg of extraction contains dimethylbenzene 72.1%, toluene 27.7%.After drying is handled, send into the production system use as reclaiming solvent.Handle 23 yuan of waste water generation economic benefits per ton through adjusting.
Claims (6)
1. the present invention relates to azeotropic-steam distillation and handle the method for organic waste water, it is characterized in that adopting azeotropic-steam distillation, help boil agent and water vapor direct heating by adding, make organism and water in the waste water form the gas azeotrope, make organism and water sepn through condensation then, reach the purpose of wastewater treatment.
2. according to claim 1., it is characterized in that containing in the waste water can with water form azeotrope organic one or more, and organic boiling point is no more than 300 ℃, or slightly soluble insoluble with water is as benzene,toluene,xylene, aniline, oil of mirbane, sherwood oil, haloalkane, paraldehyde, Fatty Alcohol(C12-C14 and C12-C18), fatty acid ester and aliphatic ether.
3. according to claim 1., it is characterized in that the agent of boiling that helps that is added is to be used to regulate waste water to neutral acid or alkali, as sulfuric acid, hydrochloric acid, yellow soda ash, sodium bicarbonate, sodium hydroxide.
4. according to claim 1., it is characterized in that employed water vapor is saturated vapor or superheated vapour, require the pressure of saturated vapor to be not less than 3kfg/cm
2, be not more than 7kfg/cm
2, the temperature of superheated vapour is no more than 300 ℃, and pressure is not more than 7kfg/cm
2
5. according to claim 1., it is characterized in that handled organic waste water, not limitting organism is one or more, do not limit the size of concentration yet, its COD value can be several thousand or several ten thousand, can go out azeotrope by direct steam distillation, and condensation separation goes out organism again, make the COD value of waste water be lower than 200, reach the purpose of handling waste water.
6. according to the method for claim 1 or 2～5 described azeotropic-steam distillation processing organic waste water, it is characterized in that the concrete operations step is:
The first step: organic waste water is squeezed in the glass-lined kettle that condenser, water-and-oil separator and extraction reflux are housed, added and help the agent of boiling, it is neutral or approaching neutral regulating waste water.
Second step: feed water vapor, regulate the size of throttle flow, the steam of azeotrope is evenly produced, and be complementary, timely extraction organic phase (oil) from water-and-oil separator, the water of total reflux institute condensation with the condensation ability of condenser.
The 3rd step: continue distillation, generate until no oil droplet, the total reflux of modify-water is full extraction, gets water sample detection in the still, stops distillation, the wastewater treatment end after up to standard.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671304A (en) * | 2015-01-13 | 2015-06-03 | 青岛双桃精细化工（集团）有限公司 | Comprehensive utilization method for gas-phase latent heat at top of rectifying tower |
| CN106277532A (en) * | 2016-09-20 | 2017-01-04 | 南通星辰合成材料有限公司 | Epoxy resin waste-water preprocess method |
| CN107879407A (en) * | 2017-12-26 | 2018-04-06 | 中农发河南农化有限公司 | A kind of recycling system for preparing ortho-aminotoluene and producing waste water |
| TWI642628B (en) * | 2017-12-08 | 2018-12-01 | 中國鋼鐵股份有限公司 | Method and apparatus for reduction and recycle of benzene, toluene and xylene mixture in water |
| CN114230693A (en) * | 2020-09-09 | 2022-03-25 | 中国科学院上海有机化学研究所 | Method for continuously removing VOC (volatile organic compounds) in ethylene propylene rubber and reducing odor level |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865864B (en) * | 2017-04-06 | 2021-02-19 | 安徽瑞赛生化科技有限公司 | Method for treating organic wastewater by extraction-steam rectification |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000107748A (en) * | 1998-10-02 | 2000-04-18 | Nippon Refine Kk | Drainage treatment method |
| CN101336210A (en) * | 2006-01-27 | 2008-12-31 | 出光兴产株式会社 | Method and apparatus for treating phenol-containing water |
-
2010
- 2010-10-11 CN CN201010502207A patent/CN101973595B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000107748A (en) * | 1998-10-02 | 2000-04-18 | Nippon Refine Kk | Drainage treatment method |
| CN101336210A (en) * | 2006-01-27 | 2008-12-31 | 出光兴产株式会社 | Method and apparatus for treating phenol-containing water |
Non-Patent Citations (1)
| Title |
|---|
| 《环境科学与技术》 20100331 唐丽华等 共沸- 分馏连续操作处理醇酮装置酸性废水 1－6 第33卷, 第3期 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671304A (en) * | 2015-01-13 | 2015-06-03 | 青岛双桃精细化工（集团）有限公司 | Comprehensive utilization method for gas-phase latent heat at top of rectifying tower |
| CN104671304B (en) * | 2015-01-13 | 2017-01-11 | 青岛双桃精细化工（集团）有限公司 | Comprehensive utilization method for gas-phase latent heat at top of rectifying tower |
| CN106277532A (en) * | 2016-09-20 | 2017-01-04 | 南通星辰合成材料有限公司 | Epoxy resin waste-water preprocess method |
| TWI642628B (en) * | 2017-12-08 | 2018-12-01 | 中國鋼鐵股份有限公司 | Method and apparatus for reduction and recycle of benzene, toluene and xylene mixture in water |
| CN107879407A (en) * | 2017-12-26 | 2018-04-06 | 中农发河南农化有限公司 | A kind of recycling system for preparing ortho-aminotoluene and producing waste water |
| CN114230693A (en) * | 2020-09-09 | 2022-03-25 | 中国科学院上海有机化学研究所 | Method for continuously removing VOC (volatile organic compounds) in ethylene propylene rubber and reducing odor level |
| CN114230693B (en) * | 2020-09-09 | 2023-07-07 | 中国科学院上海有机化学研究所 | Method for continuously removing VOC and reducing odor grade in ethylene propylene rubber |
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Inventor after: Wang Lixiang Inventor after: Wang Youzhi Inventor after: Li Yuping Inventor after: Cai Peijun Inventor after: Guo Maiping Inventor after: Hu Xiao Inventor after: Hu Manman Inventor after: Ding Qingyi Inventor after: Wang Qinghua Inventor before: Wang Lixiang Inventor before: Wang Youzhi Inventor before: Li Yuping Inventor before: Hu Xiao Inventor before: Hu Manman Inventor before: Ding Qingyi Inventor before: Wang Qinghua |
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Free format text: CORRECT: INVENTOR; FROM: WANG LIXIANG WANG YOUZHI LI YUPING HU XIAO HU MANMAN DING QINGYI WANG QINGHUA TO: WANG LIXIANG WANG YOUZHI LI YUPING CAI PEIJUN GUO MAIPING HU XIAO HU MANMAN DING QINGYI WANG QINGHUA |
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Effective date of registration: 20190422 Address after: 235058 Duanyuan Town Project Industrial Park, Huaibei City, Anhui Province Patentee after: ANHUI RUISAI BIOCHEMICAL TECHNOLOGY CO., LTD. Address before: 221000 Mengjiagou Tianhua Chemical Plant, North Suburb of Xuzhou City, Jiangsu Province Patentee before: Ruisai Science & Technology Industrial Co., Ltd., Xuzhou City |