CN103304073A - Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology - Google Patents
Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology Download PDFInfo
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- CN103304073A CN103304073A CN2013101876780A CN201310187678A CN103304073A CN 103304073 A CN103304073 A CN 103304073A CN 2013101876780 A CN2013101876780 A CN 2013101876780A CN 201310187678 A CN201310187678 A CN 201310187678A CN 103304073 A CN103304073 A CN 103304073A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005189 flocculation Methods 0.000 title claims abstract description 11
- 230000016615 flocculation Effects 0.000 title claims abstract description 11
- 238000005516 engineering process Methods 0.000 title abstract description 4
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 14
- 239000000975 dye Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 238000005119 centrifugation Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002161 passivation Methods 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 238000004042 decolorization Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Abstract
The invention discloses a method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using an intermittent pulsed current electric flocculation technology. The method comprises the following steps of: firstly, adjusting the pH value of the wastewater to 3-7 and the conductivity to 700-3000us/cm; then, carrying out electric flocculation treatment; controlling the output current density at 3.5-18mA/cm<2>, the polar plate distance at 0.4-4cm, the electrolysis time at 30-40min and the sediment time at 30-35min by using a pulsed power supply; and carrying out centrifugal treatment after the reaction is ended, wherein the centrifuging time is 8-15min. The method has the advantages that the intermittent power supply mode of the pulsed power supply is as follows: connection-disconnection-connection; and ions on the surface of a pole under the mode are well diffused during disconnection, the mass transfer effect is improved, the concentration polarization is relieved, and furthermore, the defects of poor treatment effect and electricity energy waste caused by pole passivation are overcome to a great extent.
Description
Technical field
The present invention relates to a kind for the treatment of process of waste water from dyestuff, relate to a kind of method of utilizing the intermittent pulse electric flocculation technique to handle reactive scarlet BES waste water from dyestuff in particular.
Background technology
Reactive scarlet BES is a kind of of reactive dyestuffs, and reactive dyestuffs claim chemically-reactive dyes again, is a class new dye.Reactive dyestuff molecule mainly comprises parent dyestuff and two integral parts of active group, wherein, active group energy and fiber-reactive, itself and fiber form covalent linkage, become integral body, and the washable and fastness to rubbing of dyestuff is improved.This class chroma in waste water is dark, organic pollutant content height, bio-toxicity is big, difficult for biological degradation, anti-photodissociation, oxidation-resistance are strong, simultaneously wide in variety, the complex process of reactive dyestuffs raw materials for production will produce a large amount of different types of waste water in the production process, make waste water component complexity, increased the difficulty in the wastewater treatment, even this class waste water enters water body under the very low situation of dye component, also can cause suitable serious environmental pollution problem, therefore must be handled it.Conventional processes has active carbon adsorption, biological degradation method and dosing absorption method.Yet the cost height of active carbon adsorption, gac be difficult to regeneration, uneconomical; Low and the generation secondary pollution of the efficient of dosing absorption method; Biological degradation method is also not fully up to expectations, in degradation process because the toxicity height of this type of waste water, thereby cause biotoxication and can't further play treatment effect.In the processing of trade effluents such as electric flocculation technique has been widely used in electroplating, papermaking, leather.The equipment of electricity flocculence is simple, and volume and floor space are little, need not to add reagent, and the sludge quantity of generation is few, is easy to solidify and dehydration, and the flco acid resistance is good, and is stable and easily separated.Adopt electric flocculation treatment reactive scarlet BES waste water from dyestuff, utilize electrolytic action directly or indirectly the toxic substance in the waste water from dyestuff to be transferred to non-toxic substance, have percent of decolourization height, COD clearance advantages of higher, this technical development in recent years is comparatively rapid, becomes novel water technology academic and that industry member is comparatively paid close attention to.But at present the main problem that exists is that energy consumption is higher, and easily concentration polarization takes place and cause electrode passivation in reaction process, reduces processing efficiency.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide a kind ofly can prevent electrode passivation, cut down the consumption of energy, the method for percent of decolourization height, processing reactive scarlet BES waste water from dyestuff that the COD clearance is high.
Technical scheme: a kind of method of utilizing the intermittent pulse electric flocculation technique to handle reactive scarlet BES waste water from dyestuff of the present invention, at first regulating waste water ph is 3～7, specific conductivity is 700-3000us/cm; Carry out electric flocculation treatment then: be 3.5～18mA/cm by pulse power source control outward current density
2, polar plate spacing is 0.4～4cm, electrolysis time is 30～40min, quiet heavy time 30～35min; Reaction is carried out centrifugal treating after finishing, and centrifugation time is 8～15min.
Wherein, regulating described waste water ph is 4～6, and specific conductivity is 1000-1500us/cm, and monopulse power supply control outward current density is 6～12mA/cm
2, polar plate spacing is 0.5～3cm.Described electrode is that the ferroelectric utmost point, aluminium electrode or ferro-aluminum combination of electrodes are used.The described pulse power is monopulse power supply or dual-pulse power supply.Described pulse power dutycycle is 0.3～1, and frequency is 0.5～2KHz, and the energising cycle is 0.5～1ms, and power off periods is 0.3～1ms.
Beneficial effect: the present invention compared with prior art, its remarkable advantage is that the intermittent power supply pattern of the pulse power is " on and off-Tong ", well spread when " breaking " at the ion of this pattern lower electrode surface, improved the effect of mass transfer, alleviated concentration polarization and then overcome shortcoming because of poor processing effect that electrode passivation causes, waste electric energy to a great extent.The pulse power is compared with direct supply simultaneously, has reduced power-on time, has reduced energy consumption.The data of present method all are to draw by a large amount of experiments, and the decolorization rate of wastewater of processing and COD clearance all can reach more than 95%, and the equipment that uses is simple, and floor space is little, and is easy to operate, and the sludge quantity of generation is few, to the environment non-secondary pollution.
Embodiment
Embodiment 1: reactive scarlet BES waste water content 300mg/L, and regulating the pH value is 4, and specific conductivity is 1500us/cm, and anode and cathode adopts the aluminium electrode, and polar plate spacing is 0.5cm, average current density is 12mA/cm
2, monopulse power supply dutycycle is 0.6, and frequency is 0.5KHz, and the energising cycle is 0.5ms, power off periods is 0.3ms, and electrolysis time is 40min, quiet heavy time 30min, centrifugation time 10min, the reactive scarlet BES decolorization rate of wastewater after the processing are that 96.5%, COD clearance is 97.1%.
Comparative Examples: the waste water of above-mentioned same kind, concentration, pH value, adopt the direct supply electrolysis, the percent of decolourization of processed waste water is that 93.7%, COD clearance is 95.2%.Through calculating, power consumption increases 25.2%.
Embodiment 2: reactive scarlet BES waste water content 300mg/L, and regulating the pH value is 6, and specific conductivity is 1000us/cm, and anode and cathode adopts the ferroelectric utmost point, and polar plate spacing is 3cm, average current density is 6mA/cm
2, the dual-pulse power supply dutycycle is 0.7, and frequency is 1KHz, and the energising cycle is 0.8ms, power off periods is 0.5ms, and electrolysis time is 35min, quiet heavy time 30min, centrifugation time 10min, the percent of decolourization of the reactive scarlet BES waste water after the processing are that 98.7%, COD clearance is 99.3%.
Comparative Examples: the waste water of above-mentioned same kind, concentration, pH value, adopt the direct supply electrolysis, the percent of decolourization of processed waste water is that 94.9%, COD clearance is 96.8%.Through calculating, power consumption increases 21.3%.
Embodiment 3: reactive scarlet BES waste water content 300mg/L, and regulating the pH value is 3, and specific conductivity is 3000us/cm, and anode adopts the aluminium electrode, and negative electrode adopts the ferroelectric utmost point, and polar plate spacing is 0.4cm, and average current density is 18mA/cm
2, monopulse power supply dutycycle is 1, and frequency is 2KHz, and the energising cycle is 1ms, power off periods is 1ms, and electrolysis time is 40min, quiet heavy time 33min, centrifugation time 15min, the percent of decolourization of the reactive scarlet BES waste water after the processing are that 97.3%, COD clearance is 97.8%.
Comparative Examples: the waste water of above-mentioned same kind, concentration, pH value, adopt the direct supply electrolysis, the percent of decolourization of processed waste water is that 96.1%, COD clearance is 95.2%.Through calculating, power consumption increases 23.3%.
Embodiment 4: reactive scarlet BES waste water content 300mg/L, and regulating the pH value is 7, and specific conductivity is 700us/cm, and anode adopts the aluminium electrode, and negative electrode adopts the ferroelectric utmost point, and polar plate spacing is 4cm, and average current density is 3.5mA/cm
2, the dual-pulse power supply dutycycle is 0.3, and frequency is 0.5KHz, and the energising cycle is 0.9ms, power off periods is 0.5ms, and electrolysis time is 30min, quiet heavy time 30min, centrifugation time 8min, the percent of decolourization of the reactive scarlet BES waste water after the processing are that 96.9%, COD clearance is 96.8%.
Comparative Examples: the waste water of above-mentioned same kind, concentration, pH value, adopt the direct supply electrolysis, the percent of decolourization of processed waste water is that 94.5%, COD clearance is 95.2%.Through calculating, power consumption increases 20.6%.
Embodiment 5: reactive scarlet BES waste water content 300mg/L, and regulating the pH value is 5, and specific conductivity is 1200us/cm, and anode and cathode adopts the aluminium electrode, and polar plate spacing is 1cm, average current density is 8mA/cm
2, monopulse power supply dutycycle is 0.5, and frequency is 1.5KHz, and the energising cycle is 0.5ms, power off periods is 0.4ms, and electrolysis time is 35min, quiet heavy time 35min, centrifugation time 10min, the percent of decolourization of the reactive scarlet BES waste water after the processing are that 98.5%, COD clearance is 98.8%.
Comparative Examples: the waste water of above-mentioned same kind, concentration, pH value, adopt the direct supply electrolysis, the percent of decolourization of processed waste water is that 95.7%, COD clearance is 95.2%.Through calculating, power consumption increases 22.6%.
Claims (5)
1. method of utilizing the intermittent pulse electric flocculation technique to handle reactive scarlet BES waste water from dyestuff, it is characterized in that: at first regulating waste water ph is 3～7, and specific conductivity is 700-3000us/cm; Carry out electric flocculation treatment then: be 3.5～18mA/cm by pulse power source control outward current density
2, polar plate spacing is 0.4～4cm, electrolysis time is 30～40min, quiet heavy time 30～35min; Reaction is carried out centrifugal treating after finishing, and centrifugation time is 8～15min.
2. the method for processing waste water according to claim 1, it is characterized in that: regulating described waste water ph is 4～6, and specific conductivity is 1000-1500us/cm, monopulse power supply control outward current density is 6～12mA/cm
2, polar plate spacing is 0.5～3cm.
3. the method for processing waste water according to claim 1 is characterized in that: described electrode is that the ferroelectric utmost point, aluminium electrode or ferro-aluminum combination of electrodes are used.
4. according to the method for the described processing waste water of claim 1, it is characterized in that: the described pulse power is monopulse power supply or dual-pulse power supply.
5. according to the method for claim 1 or 4 described processing waste water, it is characterized in that: described pulse power dutycycle is 0.3～1, and frequency is 0.5～2KHz, and the energising cycle is 0.5～1ms, and power off periods is 0.3～1ms.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310187678.0A CN103304073B (en) | 2013-05-20 | 2013-05-20 | Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology |
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| CN201310187678.0A CN103304073B (en) | 2013-05-20 | 2013-05-20 | Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979646A (en) * | 2014-06-04 | 2014-08-13 | 江苏科技大学 | Continuous electric flocculation water treatment method for dosing along process |
| CN104529018A (en) * | 2014-12-29 | 2015-04-22 | 广东沃杰森环保科技有限公司 | Process for treating and recycling printing and dyeing wastewater by virtue of electro-coagulation |
| CN105540750A (en) * | 2015-12-11 | 2016-05-04 | 江苏科技大学 | Method for microelectrolysis-pulse electrocoagulation coupled treatment of dye wastewater |
| CN106865838A (en) * | 2017-02-28 | 2017-06-20 | 东南大学 | A kind of decolorizing printing and dyeing waste water reclamation set |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038391A (en) * | 1999-08-03 | 2001-02-13 | Toshiba Corp | Treatment of waste liquid containing surfactant |
| CN101638257A (en) * | 2009-07-17 | 2010-02-03 | 东北大学 | Method and device for treating dye wastewater employing periodic reverse electrocoagulation |
-
2013
- 2013-05-20 CN CN201310187678.0A patent/CN103304073B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038391A (en) * | 1999-08-03 | 2001-02-13 | Toshiba Corp | Treatment of waste liquid containing surfactant |
| CN101638257A (en) * | 2009-07-17 | 2010-02-03 | 东北大学 | Method and device for treating dye wastewater employing periodic reverse electrocoagulation |
Non-Patent Citations (1)
| Title |
|---|
| 陈意民: "脉冲电絮凝处理难降解染料废水的研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979646A (en) * | 2014-06-04 | 2014-08-13 | 江苏科技大学 | Continuous electric flocculation water treatment method for dosing along process |
| CN103979646B (en) * | 2014-06-04 | 2015-07-15 | 江苏科技大学 | Continuous electric flocculation water treatment method for dosing along process |
| CN104529018A (en) * | 2014-12-29 | 2015-04-22 | 广东沃杰森环保科技有限公司 | Process for treating and recycling printing and dyeing wastewater by virtue of electro-coagulation |
| CN105540750A (en) * | 2015-12-11 | 2016-05-04 | 江苏科技大学 | Method for microelectrolysis-pulse electrocoagulation coupled treatment of dye wastewater |
| CN106865838A (en) * | 2017-02-28 | 2017-06-20 | 东南大学 | A kind of decolorizing printing and dyeing waste water reclamation set |
| CN106865838B (en) * | 2017-02-28 | 2020-07-31 | 东南大学 | Printing and dyeing wastewater decoloration retrieval and utilization device |
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| CN103304073B (en) | 2015-07-01 |
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Address after: 212434, No. 688, Dongfanghong village, Guo Town, Jurong, Jiangsu, Zhenjiang Patentee after: Jiangsu Tongrui environmental protection technology development Limited by Share Ltd. Address before: 212431 Zhenjiang City, Jiangsu city of Jurong province Guo Zhuang Zhen Dong Fang Hong Cun 688, Jiangsu tonre Environmental Technology Development Co. Ltd. Patentee before: JIANGSU TONGRUI ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT CO.,LTD. |
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Denomination of invention: Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology Effective date of registration: 20170626 Granted publication date: 20150701 Pledgee: Bank of China Limited by Share Ltd. Jurong branch Pledgor: Jiangsu Tongrui environmental protection technology development Limited by Share Ltd. Registration number: 2017320000022 |
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Denomination of invention: Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology Effective date of registration: 20180308 Granted publication date: 20150701 Pledgee: Bank of China Limited by Share Ltd. Jurong branch Pledgor: Jiangsu Tongrui environmental protection technology development Limited by Share Ltd. Registration number: 2018320000027 |
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Denomination of invention: Method for treating active scarlet BES (Biological Electrochemical System) dye wastewater by using intermittent pulsed current electric flocculation technology Effective date of registration: 20190404 Granted publication date: 20150701 Pledgee: Bank of China Limited by Share Ltd. Jurong branch Pledgor: Jiangsu Tongrui environmental protection technology development Limited by Share Ltd. Registration number: 2019320000171 |
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Effective date of registration: 20240126 Address after: No. 3, Puji Road, Cicheng Town Private Industrial City, Jiangbei District, Ningbo, Zhejiang 315000 Patentee after: Honeycomb Activated Carbon Co.,Ltd. Country or region after: China Address before: No. 688, Dongfanghong village, Guozhuang Town, Jurong City, Zhenjiang City, Jiangsu Province, 212434 Patentee before: Jiangsu Tongrui environmental protection technology development Limited by Share Ltd. Country or region before: China |