CN101759246B - Device for treatment of waste water containing organic solvents - Google Patents
Device for treatment of waste water containing organic solvents Download PDFInfo
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- CN101759246B CN101759246B CN2010100053068A CN201010005306A CN101759246B CN 101759246 B CN101759246 B CN 101759246B CN 2010100053068 A CN2010100053068 A CN 2010100053068A CN 201010005306 A CN201010005306 A CN 201010005306A CN 101759246 B CN101759246 B CN 101759246B
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Abstract
The invention discloses a method for treatment of waste water containing organic solvents and a treatment device. The device comprises a molecular sieve column with a waste water inlet on one end and a clear water outlet on the other end. One end of the molecular sieve column with the waste water inlet is provided with a condenser, and a solvent tank is connected with the condenser. The other end with the clear water outlet is provided with a solvent vapor inlet. On the condenser, a cooling water inlet and a cooling water outlet are arranged, and on the solvent tank, a solvent recycle opening is arranged. The molecular sieve can absorb the organic solvents in the waste water flowing through thereof. As a certain amount of the organic solvents is absorbed by the molecular sieve, organic solvent vapor of the same kind is introduced into the molecular sieve. The sieve-absorbed organic solvents are separated and then changed into organic solvent vapor. The obtained organic solvent vapor is turned into liquid through cooling and recycled. Waste water is introduced again, and steps like circulation treatment are carried out continuously, thus achieving effective treatment of waste water containing organic solvents.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, particularly a kind of wastewater treatment method that contains organic solvent also relates to the device of handling this waste water.
Background technology
Industrial processes usually can produce the sewage that contains organic solvent, often take methods such as rectifying, absorption, extraction to reclaim the organic solvent in the waste water at present.But in actual application, all there is certain defective in these methods.
For example, if when not high and boiling point organic solvent in the waste water of concentration is higher than water in the waste water, when taking rectificating method to reclaim; Need a large amount of water be evaporated; Because the thermal capacitance of water is big, from waste water, reclaim organic solvent with the rectification method processing, there is the big problem of energy consumption.
Utilize extraction process can overcome the high shortcoming of energy consumption, still, extract generally poisonously with solvent, extraction is with possible polluted water of solvent and atmosphere.
Absorption method is handled when containing the waste water of organic solvent; The general using gac is as sorbent material; After the adsorbents adsorb certain amount of organic solvent, utilize methylene dichloride cleaning active charcoal to make gac recover adsorptive power again, at this moment; Organic solvent is transferred in the methylene dichloride, handles to obtain organic solvent at last through distillation.Yet the absorption method of generally using is at present handled the method for waste water main drawback and is: (1) gac has certain adsorptive power to moisture, and gac can adsorb a certain amount of moisture when absorbing organic solvent; (2) methylene dichloride toxicity is big, also has the possibility of contaminate environment.
Summary of the invention
In order to solve the above problems, to the object of the present invention is to provide a kind of less energy-consumption, high-level efficiency, and do not produce the method that the sewage to containing organic solvent of secondary pollution is handled.
In addition, the present invention also provides a kind of device that the sewage that contains organic solvent is handled.
The present invention solves the technical scheme that its problem adopts:
A kind of method of wastewater treatment that contains organic solvent may further comprise the steps:
A, let the waste water that contains organic solvent flow through molecular sieve,, obtain clean water by the organic solvent in the molecular sieve adsorption waste water;
B, after molecular sieve absorbs certain amount of organic solvent, stop to feed waste water, and in molecular sieve, feed the organic vapor of identical type to molecular sieve, make the organic solvent that is adsorbed on the molecular sieve from molecular sieve, separate, and become organic vapor;
The organic vapor that c, cooling step b obtain makes it convert liquid and recovery into, and feeds waste water once more, constantly carries out circular treatment.
As the improvement of technique scheme, said step c also comprises the cooling step to molecular sieve.
As the further improvement of technique scheme, among the said step b, in molecular sieve, before the feeding organic vapor, also has the step of exhaust, draining again.
A kind of treatment unit of the present invention comprises molecular sieve column, and the one of which end is provided with waterwater entrance; The other end is provided with the clean water outlet; The end that said molecular sieve column is provided with waterwater entrance also is provided with condensing surface, and said condensing surface also is connected with solvent tank, and the end that said molecular sieve column is provided with the clean water outlet also is provided with the solvent vapo(u)r inlet; Said condensing surface is provided with cooling water inlet and cooling water outlet, and said solvent tank is provided with the solvent recuperation mouth.
As the improvement of technique scheme, the end that said molecular sieve column is provided with the clean water outlet also is provided with venting port.
As the further improvement of technique scheme, the end that said molecular sieve column is provided with waterwater entrance also is provided with leakage fluid dram.
As the further improvement of technique scheme, said molecular sieve column is provided with two groups altogether.
The invention has the beneficial effects as follows: owing to used the molecular sieve that possesses the height hydrophobic nature in the method that the waste water that contains organic solvent of the present invention is handled; Its organic solvent in can preferentially adsorbed moisture; Can directly reclaim the organic solvent of high density, it is lower to consume energy.And use solvent vapo(u)r that the molecular sieve that is adsorbed with organic solvent is constantly regenerated, greatly improved the adsorptive power of molecular sieve, improve waste water treatment efficiency.And, in the entire treatment process, do not introduce new solvent, non-secondary pollution.
In addition, and treatment unit of the present invention is formed simple and flexible, can realize the processing to the waste water that contains organic solvent preferably.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Fig. 1 is the structural representation of treatment unit of the present invention.
Embodiment
A kind of method of wastewater treatment that contains organic solvent of the present invention may further comprise the steps:
A, let the waste water that contains organic solvent flow through molecular sieve,, obtain clean water by the organic solvent in the molecular sieve adsorption waste water;
B, after molecular sieve absorbs certain amount of organic solvent, stop to feed waste water, and in molecular sieve, feed the organic vapor of identical type to molecular sieve, make the organic solvent that is adsorbed on the molecular sieve from molecular sieve, separate, and become organic vapor;
The organic vapor that c, cooling step b obtain makes it convert liquid and recovery into, and feeds waste water once more, constantly carries out circular treatment.
Owing to used the molecular sieve that possesses the height hydrophobic nature in the method handled of the waste water that contains organic solvent of the present invention, its organic solvent in can preferentially adsorbed moisture can directly reclaim the organic solvent of high density, and it is lower to consume energy.And use solvent vapo(u)r that the molecular sieve that is adsorbed with organic solvent is constantly regenerated, greatly improved the adsorptive power of molecular sieve, improve waste water treatment efficiency.And, in the entire treatment process, do not introduce new solvent, non-secondary pollution.
Because temperature can significantly improve after molecular sieve fed solvent vapo(u)r, its adsorptive power descends to some extent, so also comprise the cooling step to molecular sieve at said step c.
In order to improve the effect that reclaims solvent, as preferably, among the preceding said step b, in molecular sieve, before the feeding organic vapor, also have the step of exhaust, draining again, water residual in the molecular sieve and gas are discharged.
With reference to figure 1, a kind of treatment unit of the present invention comprises molecular sieve column 1; The one of which end is provided with waterwater entrance 11, and the other end is provided with clean water outlet 12, and the end that said molecular sieve column 1 is provided with waterwater entrance 11 also is provided with condensing surface 2; Said condensing surface 2 also is connected with solvent tank 3; The end that said molecular sieve column 1 is provided with clean water outlet 12 also is provided with solvent vapo(u)r inlet 13, and said condensing surface 2 is provided with cooling water inlet 21 and cooling water outlet 22, and said solvent tank 3 is provided with solvent recuperation mouth 31.
As preferably, the end that said molecular sieve column 1 is provided with clean water outlet 12 also is provided with venting port 14, and said solvent tank 3 is connected with vacuum pump 32.Venting port 14 and vacuum pump 32 can be used to discharge the gas of incoagulability in the molecular sieve column 1.
As preferably, the end that said molecular sieve column 1 is provided with waterwater entrance 11 also is provided with leakage fluid dram 15.It can be used to discharge waste water residual in the molecular sieve column 1.
In order to improve waste water treatment efficiency, said molecular sieve column 1 is provided with two groups altogether.Like this, when wherein one group of molecular sieve column 1 was at feeding solvent vapo(u)r regenerated molecular sieve 1, another group molecular sieve can be proceeded wastewater treatment, can greatly raise the efficiency.Certainly, also can many groups be set according to practical situation.
Below, again wastewater treatment process is elaborated in conjunction with Fig. 1 and this treatment unit:
The first step: molecular sieve adsorption stage
The waste water that contains organic solvent gets into from waterwater entrance 11, and SV F1 opens, and F3, F8, F5 close; After waste water flows through molecular sieve column 1, discharge from clean water outlet 12, the water of discharging from clean water outlet 12 is clean; After molecular sieve column 1 adsorbs certain organic solvent; Need regeneration, thus, wastewater treatment process changes next step over to.
Second step: draining and row's non-condensable gases stage
Draining: SV F1, F8, F5 close, and F3 opens, and at this moment, water residual in the adsorbed molecules sieve post 1 flows out from leakage fluid dram 15.
Row's non-condensable gases: SV F1, F8, F3, F11 close, SV F5, F7, and F10 opens, and vacuum pump M1 starts, and behind the some minutes, vacuum pump stops, and SV F10 closes.
The 3rd step: molecular sieve column 1 thermal regeneration and solvent recuperation process
The molecular sieve column thermal regeneration: SV F8 opens, and at the solvent vapo(u)r logical solvent vapo(u)r that gets in 13 places that enters the mouth, solvent vapo(u)r raises the temperature of molecular sieve column 1, finally makes the organic solvent that adsorbs in the molecular sieve together become steam.
Solvent recuperation process: feed water coolant through cooling water inlet 21, make solvent vapo(u)r in condensing surface 2, become liquid and also reclaim through the solvent recuperation mouth 31 of solvent tank 3.
The 4th step: molecular sieve column 1 colling stages
The waste water that contains organic solvent gets into from waterwater entrance 11; SV F1 opens; F3, F8, F5 close, and after waste water flow through molecular sieve column 1, the water temp of discharging from clean water outlet 12 was high; Contain certain organic solvent in the water simultaneously, the water of discharging from clean water outlet 12 this moment is sent the wastewater disposal basin products for further back to and is handled.After cooling after a while, the water of discharging from clean water outlet 12 can become clean water.
Certainly; The invention is not limited to above-mentioned embodiment; Those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (4)
1. a processing contains the device of organic solvent waste water; It is characterized in that: comprise molecular sieve column (1); The one of which end is provided with waterwater entrance (11), and the other end is provided with clean water outlet (12), and the end that said molecular sieve column (1) is provided with waterwater entrance (11) also is provided with condensing surface (2); Said condensing surface (2) also is connected with solvent tank (3); The end that said molecular sieve column (1) is provided with clean water outlet (12) also is provided with solvent vapo(u)r inlet (13), and said condensing surface (2) is provided with cooling water inlet (21) and cooling water outlet (22), and said solvent tank (3) is provided with solvent recuperation mouth (31); The method that said apparatus processes contains organic solvent waste water is to let the waste water that contains organic solvent flow through molecular sieve, by the organic solvent in the molecular sieve adsorption waste water, obtains clean water; After molecular sieve absorbs certain amount of organic solvent, stop to feed waste water, and in molecular sieve, feed the organic vapor of identical type to molecular sieve, make the organic solvent that is adsorbed on the molecular sieve from molecular sieve, separate, and become organic vapor; Cool off resulting organic vapor, make it convert liquid and recovery into, and feed waste water once more, constantly carry out circular treatment.
2. processing according to claim 1 contains the device of organic solvent waste water, it is characterized in that: the end that said molecular sieve column (1) is provided with clean water outlet (12) also is provided with venting port (14), and said solvent tank (3) is connected with vacuum pump (32).
3. processing according to claim 1 contains the device of organic solvent waste water, it is characterized in that: the end that said molecular sieve column (1) is provided with waterwater entrance (11) also is provided with leakage fluid dram (15).
4. contain the device of organic solvent waste water according to claim 1,2 or 3 described processing, it is characterized in that: said molecular sieve column (1) is provided with two groups altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100053068A CN101759246B (en) | 2010-01-15 | 2010-01-15 | Device for treatment of waste water containing organic solvents |
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| CN2010100053068A CN101759246B (en) | 2010-01-15 | 2010-01-15 | Device for treatment of waste water containing organic solvents |
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| CN101759246A CN101759246A (en) | 2010-06-30 |
| CN101759246B true CN101759246B (en) | 2012-02-01 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103214055B (en) * | 2013-04-19 | 2014-09-03 | 马军 | Wastewater treatment device containing organic solvent |
| CN104230077B (en) * | 2013-06-17 | 2016-12-28 | 中国石油化工股份有限公司 | The organic amine wastewater processing method of phosphorous aluminum silicon |
| CN105753008A (en) * | 2014-12-15 | 2016-07-13 | 中国石油化工股份有限公司 | Processing method of hexamethylene imine-containing wastes |
| CN104961187A (en) * | 2015-06-17 | 2015-10-07 | 马军 | Method for treating wastewater with organic solvents |
| CN106241932B (en) * | 2016-07-31 | 2019-10-25 | 武汉理工大学 | A method of drawing organic solvent from water body |
| CN110357199A (en) * | 2019-07-23 | 2019-10-22 | 潍坊科技学院 | A kind of wastewater treatment equipment containing organic solvent |
| CN112838271B (en) * | 2021-04-16 | 2021-07-06 | 浙江金羽新能源科技有限公司 | Preparation method and preparation system of electrolyte |
| CN113800589A (en) * | 2021-09-23 | 2021-12-17 | 华中科技大学 | VOCs absorption device and absorption method |
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