CN103058437A - Method for removing organochlorine in wastewater - Google Patents
Method for removing organochlorine in wastewater Download PDFInfo
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- CN103058437A CN103058437A CN 201210588996 CN201210588996A CN103058437A CN 103058437 A CN103058437 A CN 103058437A CN 201210588996 CN201210588996 CN 201210588996 CN 201210588996 A CN201210588996 A CN 201210588996A CN 103058437 A CN103058437 A CN 103058437A
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Abstract
The invention relates to a method for removing organochlorine in wastewater with large flow and high efficiency. Wastewater containing high-concentration organochlorine, which is formed by condensing waste steam generated through active carbon regeneration, is stripped by using a stripping tower; the wastewater coming out from the bottom of the tower is adsorbed by active carbon after being cooled; wastewater containing the organochlorine, which is formed by condensing the waste steam generated by active carbon regeneration, is discharged into a sewage pond; and the separated organochlorine wastewater also returns to the sewage pond, therefore, the organochlorine is efficiently separated in circulation.
Description
Technical field
The present invention relates to a kind of method that removes organochlorine in the waste water, especially stripping and gac and be used in combination the waste water that processing contains organochlorine.
Background technology
At present, the pollution of organic chloride has popularity and hazardness, has become a global environmental problem, attracts great attention.On the pollutent Black List that the European Community announces, what stand out also is halides and the material that can form halides in environment, mainly comprises chlorinated aliphatic hydrocarbon, chlorination aromatic hydrocarbon and derivative thereof.Contain organic muriatic waste water and directly enter Sewage treatment systems, may cause biological processing unit efficient obviously to descend.
Organic chloride is one of objectionable impurities of common sewage.Yet nearly all organic chloride all has toxicity, and chemical property is relatively stable.Contain organic muriatic direct discharging of waste water, accumulate in the organic matter of organism, soils and sediments easily, degrade again slowly at occurring in nature, the environmental hazard cycle is long.At present, the technology of processing organic chloride has biological degradation, catalytic reduction method, ion exchange method, steam stripped method and active carbon adsorption, but adopt separately which kind of method will face all that treatment capacity is little, the more high realistic problem of processing cost, more lack and to process on a large scale waste water and can reclaim organochlorine, realize cleaner production and have the technology of engineering significance.
Summary of the invention
The deficiency that can not process on a large scale waste water and can reclaim organochlorine in order to solve the existing method that removes organochlorine in the waste water.The invention provides the method for the organochlorine in a kind of charcoal absorption and the stripping combined treatment waste water, and regeneration of activated carbon can be produced organochlorine waste water that waste water and stripping cat head steam condensate separate through phase separator and get back to stripping tower and separate again organochlorine, greatly improve the processing rate of organochlorine.
For reaching above purpose, the technical solution adopted for the present invention to solve the technical problems is: can reach the surface water standard after the active carbon bed absorption of the organochlorine waste water that contains chloroform and tetracol phenixin through one or more levels series connection.Adsorbing gac after saturated reuses after with the superheated vapour thermal regeneration.The water reuse stripping tower stripping that contains the high density organochlorine that the exhaust steam that regeneration produces forms after condensation, the stripping overhead vapours is sent production equipment back to through condensation, the moisture organochlorine that is separated out and is reclaimed, at the bottom of the tower out waste water again through charcoal absorption.The organochlorine waste water that is separated out comes back to stripping tower and further separates organochlorine.Reach the purpose of organochlorine in the efficient removal waste water.
The present invention compared with prior art has the following advantages:
1, waste water is processed through stripping and charcoal absorption series connection, and organochlorine concentration can directly reach the surface water standard in the waste water, greatly reduces the organochlorine total amount of pollutants discharged, improves the reliability that organochlorine is processed.
2, gac steam situ regeneration, and utilize stripping tower to reclaim organochlorine, can avoid the environmental pollution of the regeneration of gac strange land or burning disposal, realize cleaner production.
3, utilize the steam regeneration gac of suitable temp, the fixed carbon that can avoid conventional high-temperature air draught oven dry regeneration to cause increases, the too fast phenomenon of charcoal absorption decrease in efficiency, each regeneration can be kept front more than 90% of loading capacity of regeneration, the life-span of gac prolongs greatly, has reduced cost of water treatment.Through the gac after the high-temperature steam regeneration, can be used as general useless solid the processing, reduce useless solid processing cost.
4, can be according to the difference of organochlorine concentration in the waste water, differentiated treatment realizes best treatment effect and minimum processing cost.In error state (ERST), when wastewater flow rate was very large, the short period of time was adopted the large flow adsorption treatment of gac, and organochlorine concentration reaches drinking water standard (but not emission standard) in the waste water after can guaranteeing to process, reduce the organochlorine specific factor to the shock effect of downstream water system or operation, threaten diversion safety.Work as standard state, wastewater flow rate is not too large, when organochlorine concentration is high, adopt stripping to process, pass through charcoal absorption again after, organochlorine concentration directly reaches drinking water standard in the waste water.Because gac can repeatedly regenerate, consume lessly, and the steam consumption of stripping processing waste water is about 50 kg/tonnes. waste water, so the integrated operation expense is very low.
After adopting above technical scheme, the invention has the beneficial effects as follows: gac steam situ regeneration, can avoid the environmental pollution of the regeneration of gac strange land or burning disposal, realize cleaner production.Utilize the steam regeneration gac of suitable temp, the fixed carbon that can avoid conventional high-temperature air draught oven dry regeneration to cause increases, the too fast phenomenon of charcoal absorption decrease in efficiency, each regeneration can be kept front more than 90% of loading capacity of regeneration, the life-span of gac prolongs greatly, has reduced cost of water treatment.Through the gac after the high-temperature steam regeneration, can be used as general useless solid the processing, reduce useless solid processing cost.Because gac can repeatedly regenerate, consume lessly, and the steam consumption of stripping processing waste water is about 50 kg/tonnes. waste water, so the integrated operation expense is very low.Gac is cheap, invests littlely, is applicable to large-scale commercial production, reaches and per hour processes organochlorine waste water more than hundred tons.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
According to shown in Figure 1, a kind of method that removes organochlorine in the waste water of the present invention, the organochlorine in charcoal absorption and the stripping combined treatment waste water, stripping tower bottom waste water enters charcoal absorption after cooling; Gac is regenerated with steam, enters stripping tower after the regeneration steam condensate is collected again and removes organochlorine.
Gac of the present invention adopts steam regeneration, and described steam surpasses 100 ℃ superheated vapour; Described superheated vapour temperature is 100～500 ℃, is advisable with 150～350 ℃; The concentration of organochlorine is more than 10 ppm in the waste water; The organochlorine waste water that regeneration of activated carbon generation waste water and stripping cat head steam condensate are separated through phase separator is got back to stripping tower and is separated organochlorine again; Suitable treatment contains the waste water of chloroform and tetracol phenixin.
The present invention is the industrial industrial sewage that will contain organochlorine by strainer, can reach the surface water standard through after the active carbon bed adsorption filtration of one or more levels series connection.Adsorbing gac after saturated reuses after with the superheated vapour thermal regeneration.The waste water that contains the high density organochlorine that the exhaust steam that regeneration produces forms after condensation is drawn from strainer, sends into the stripping tower stripping, and the stripping overhead vapours is sent production equipment back to through condensation, the moisture organochlorine that is separated out and reclaimed.At the bottom of the tower out after the waste water cooling again through charcoal absorption, the waste water that contains organochlorine that the exhaust steam that regeneration produces forms after condensation enters sewage lagoon, the organochlorine waste water that is separated is out also got back to sewage lagoon, with this separation organochlorine that circulates, reaches the purpose that efficiently removes organochlorine.
Claims (6)
1. method that removes organochlorine in the waste water, it is characterized in that: the organochlorine in charcoal absorption and the stripping combined treatment waste water, the waste water of stripping tower bottom enters charcoal absorption after cooling, and gac is regenerated with steam, after the regeneration steam condensate is collected again, enter stripping tower and remove organochlorine.
2. a kind of method that removes organochlorine in the waste water according to claim 1 is characterized in that: the regeneration of gac employing steam, the superheated vapour of described steam above 100 ℃.
3. a kind of method that removes organochlorine in the waste water according to claim 1 and 2, it is characterized in that: described superheated vapour temperature is 100 ~ 500 ℃, is advisable with 150～350 ℃.
4. a kind of method that removes organochlorine in the waste water according to claim 1, it is characterized in that: the concentration of organochlorine is more than 10 ppm in the waste water.
5. a kind of method that removes organochlorine in the waste water according to claim 1 is characterized in that: regeneration of activated carbon produces organochlorine waste water that waste water and stripping cat head steam condensate separate through phase separator and gets back to stripping tower and separate organochlorine again.
6. the method that removes organochlorine in the waste water according to claim 1, it is characterized in that: waste water is the waste water that suitable treatment contains chloroform and tetracol phenixin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210588996 CN103058437A (en) | 2012-12-31 | 2012-12-31 | Method for removing organochlorine in wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210588996 CN103058437A (en) | 2012-12-31 | 2012-12-31 | Method for removing organochlorine in wastewater |
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| CN103058437A true CN103058437A (en) | 2013-04-24 |
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| CN 201210588996 Pending CN103058437A (en) | 2012-12-31 | 2012-12-31 | Method for removing organochlorine in wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000611A (en) * | 2015-06-25 | 2015-10-28 | 徐州工程学院 | Carbon tetrachloride-containing groundwater treatment device |
| CN105036224A (en) * | 2015-06-25 | 2015-11-11 | 徐州工程学院 | Method for treating tetrachloromethane-containing groundwater |
| CN109824209A (en) * | 2019-03-21 | 2019-05-31 | 福建省鸿翔纺织科技有限公司 | A kind of adsorbent reactivation treatment process of dyeing and finishing wastewater |
| WO2020034280A1 (en) * | 2018-08-16 | 2020-02-20 | 无锡四方集团有限公司 | In situ desorption and regeneration system for activated carbon adsorbent |
| CN112661284A (en) * | 2020-12-23 | 2021-04-16 | 安道麦安邦(江苏)有限公司 | Resource treatment method and device for dichloroethane-containing pymetrozine wastewater |
| CN113880345A (en) * | 2021-11-06 | 2022-01-04 | 普林斯(安庆)医药科技有限公司 | Recovery treatment process of organic chloride |
| CN114307523A (en) * | 2020-09-27 | 2022-04-12 | 济南圣泉集团股份有限公司 | Clean production process in chemical production field |
-
2012
- 2012-12-31 CN CN 201210588996 patent/CN103058437A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000611A (en) * | 2015-06-25 | 2015-10-28 | 徐州工程学院 | Carbon tetrachloride-containing groundwater treatment device |
| CN105036224A (en) * | 2015-06-25 | 2015-11-11 | 徐州工程学院 | Method for treating tetrachloromethane-containing groundwater |
| CN105036224B (en) * | 2015-06-25 | 2017-03-01 | 徐州工程学院 | Groundwater Treatment Methodss containing carbon tetrachloride |
| WO2020034280A1 (en) * | 2018-08-16 | 2020-02-20 | 无锡四方集团有限公司 | In situ desorption and regeneration system for activated carbon adsorbent |
| CN109824209A (en) * | 2019-03-21 | 2019-05-31 | 福建省鸿翔纺织科技有限公司 | A kind of adsorbent reactivation treatment process of dyeing and finishing wastewater |
| CN109824209B (en) * | 2019-03-21 | 2021-08-27 | 福建省鸿翔纺织科技有限公司 | Dyeing and finishing wastewater adsorbent regeneration treatment process |
| CN114307523A (en) * | 2020-09-27 | 2022-04-12 | 济南圣泉集团股份有限公司 | Clean production process in chemical production field |
| CN112661284A (en) * | 2020-12-23 | 2021-04-16 | 安道麦安邦(江苏)有限公司 | Resource treatment method and device for dichloroethane-containing pymetrozine wastewater |
| CN113880345A (en) * | 2021-11-06 | 2022-01-04 | 普林斯(安庆)医药科技有限公司 | Recovery treatment process of organic chloride |
| CN113880345B (en) * | 2021-11-06 | 2022-12-13 | 普林斯(安庆)医药科技有限公司 | Recovery treatment process of organic chloride |
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Application publication date: 20130424 |