CN204039110U - A kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device - Google Patents
A kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device Download PDFInfo
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- CN204039110U CN204039110U CN201420354247.9U CN201420354247U CN204039110U CN 204039110 U CN204039110 U CN 204039110U CN 201420354247 U CN201420354247 U CN 201420354247U CN 204039110 U CN204039110 U CN 204039110U
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- flocculation tank
- electroplating wastewater
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- flocculation
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Abstract
The utility model relates to a kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device.Comprise one-level flocculation tank and the secondary flocculation tank of connection, wherein one-level flocculation tank has following structure: comprise the upper groove of connection and lower groove, wherein electrode is arranged in lower groove, is provided with whipping appts in lower groove.Carry out according to following steps: 1) first electroplating wastewater is passed into one-level flocculation tank, realize electric discharge by action of low-voltage pulse power supply, open whipping appts simultaneously, once flocculate; 2), after once flocculating, electroplating wastewater enters secondary flocculation tank, flocculates, and arranges anti-backflow device between secondary flocculation tank and one-level flocculation tank.Electrode is arranged in lower groove by the utility model, descend the flocs unit produced in groove under the effect of whipping appts, be divided into the less flocs unit of particle like this, it is less that the structure of upper and lower groove makes to be in the impact that the electroplating wastewater in groove is subject to, thus can not affect gathering of particle, thus reach the object of purifying electric waste electroplating.
Description
Technical field
The utility model relates to a kind for the treatment of unit of electroplating wastewater, relates to a kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device specifically.
Background technology
The treatment process of current heavy metal wastewater thereby mainly contains chemical precipitation, chemical flocculation, electrolytic reduction, membrane separation process etc., first three methods Problems existing is mainly summarized as that secondary pollution is serious, effectively improvement rate is low, difficult in maintenance, wastewater recycle rate is low, and membrane separation process exists because fouling membrane, film cost are high and membrane lifetime is short etc. problem.In recent years in heavy metal containing wastewater treatment field, electric flocculation technique is more and more widely used, also have much competitive power, this be due to electric flocculation process contain electrofloatation and adsorption-flocculation two kinds reaction and synergy, thus can process effluent containing heavy metal ions fast and efficiently.The traditional heavy metal ion of one-level electricity flocculation system in initial reaction stage waste water fully contacts with flco, collides, As time goes on phase concentration of heavy metal ion and flco content reduce after the reaction, flco absorption utilization ratio declines, also need subsequent disposal could by the removal of heavy metal ions in waste water after one-level electricity flocculation treatment terminates, complex process, energy consumption be large.The treatment process of current heavy metal wastewater thereby mainly contains chemical precipitation, chemical flocculation, electrolytic reduction, membrane separation process etc., first three methods Problems existing is mainly summarized as that secondary pollution is serious, effectively improvement rate is low, difficult in maintenance, wastewater recycle rate is low, and membrane separation process exists because fouling membrane, film cost are high and membrane lifetime is short etc. problem.In recent years in heavy metal containing wastewater treatment field, electric flocculation technique is more and more widely used, also have much competitive power, this be due to electric flocculation process contain electrofloatation and adsorption-flocculation two kinds reaction and synergy, thus can process effluent containing heavy metal ions fast and efficiently.The traditional heavy metal ion of one-level electricity flocculation system in initial reaction stage waste water fully contacts with flco, collides, As time goes on phase concentration of heavy metal ion and flco content reduce after the reaction, flco absorption utilization ratio declines, also need subsequent disposal could by the removal of heavy metal ions in waste water after one-level electricity flocculation treatment terminates, complex process, energy consumption be large.
Notification number is the technology that patent discloses the flocculation of a kind of secondary of CN103193344A for this reason, improve treatment effect, but processing efficiency is not high, because its size of the flocs unit of twice generation is all larger, its specific surface area is less, therefore its adsorption efficiency is lower, needs to be improved.
For this reason notification number be CN103288185A patent discloses a kind of method utilizing outer circulation electric flocculation technique process effluent containing heavy metal ions, it reduces the particle of flocs unit by the convection current produced, to reach the object improving adsorptive capacity and adsorption effect, but in convection process, the convection current that electroplating wastewater is also thereupon adjoint, because vibration have impact on gathering of impurity from another angle, the therefore technical scheme of this patent also existing defects.
Utility model content
The utility model is for above-mentioned defect, and object is to provide a kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device of flocculating effect when can improve electroplating wastewater processing further.
The technical solution adopted in the utility model is for this reason: the utility model comprises one-level flocculation tank and the secondary flocculation tank of connection, wherein one-level flocculation tank has following structure: comprise the upper groove of connection and lower groove, wherein electrode is arranged in lower groove, is provided with whipping appts in lower groove.
Described secondary flocculation tank interelectrode distance is less than one-level flocculation tank interelectrode distance, and one-level flocculation tank interelectrode distance is 5-20mm, and secondary flocculation tank interelectrode distance is 5-10cm.
Between secondary flocculation tank and one-level flocculation tank, anti-backflow device is set.
A flucculation process for electroplating wastewater processing voltage pulse point flocculation technique device, carries out according to following steps:
1) first electroplating wastewater is passed into one-level flocculation tank, realize electric discharge by action of low-voltage pulse power supply, open whipping appts simultaneously, once flocculate;
2), after once flocculating, electroplating wastewater enters secondary flocculation tank, flocculates, and arranges anti-backflow device between secondary flocculation tank and one-level flocculation tank.
Concrete steps of the present utility model are as follows: first regulate waste water ph to be 4-5, specific conductivity is 500-5000us/cm; Then first step electricity flocculation treatment is entered: be 5-25V by the voltage between action of low-voltage pulse Energy control often pair of electrode, on battery lead plate, current density is 2-5mA/cm
2, interelectrode distance is 5-20mm, and retention time of sewage is 5-10min; It is 5-6 that reaction terminates rear adjustment waste water ph; Enter second stage electricity flocculation treatment again: be 3-10V by the voltage between direct supply or action of low-voltage pulse Energy control often pair of electrode, on electrode pad, current density is 1.5-5.6mA/cm
2, interelectrode distance is 5-10mm, and retention time of sewage is 15-40min.
Reaction mechanism CN103193344A of the present utility model, CN103288185A is substantially consistent, do not launch to describe at this, it is compared two patents and has the following advantages: 1) one-level flocculation tank of the present utility model is arranged to groove, lower groove structure, and electrode is arranged in lower groove, descend the flocs unit produced in groove under the effect of whipping appts, be divided into the less flocs unit of particle like this, simultaneously to make to be in the impact that the electroplating wastewater in groove is subject to less for the structure of this upper and lower groove, thus gathering of particle can not be affected, less flocs unit is in the process of moving upward, to the heavy metal existed in electroplating wastewater, small-particle adsorbs, thus reach the object of purifying electric waste electroplating,
2) the application adopts twice flocculation, and secondary flocculation does not adopt lower groove structure, the content of the heavy metal of its reason electroplating wastewater after once flocculation in it and related impurities greatly reduces, just some the small-sized particles existed, now the specific surface area of flocs unit and quantity have been not principal elements, larger sized flocs unit is then more conducive to the absorption to this small sized particles, and therefore secondary flocculation tank adopts normal structure, does not arrange lower groove structure.
The setting of above-mentioned one-level flocculation tank, secondary flocculation tank different structure form is that as exchanged between the two, then its efficiency will obtain very large impact according to the character of electroplating wastewater and the character of electroplating wastewater is made after primary treatment vibrational power flow.Detect through experiment, its processing efficiency comparatively CN103193344A, CN103288185A is improved, and its power consumption is reduced, and this can be able to draw from retention time of sewage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1 be upper groove, 2 be lower groove in figure, 3 be electrode, 4 be whipping appts, 5 for secondary flocculation tank.
Embodiment
The utility model comprises one-level flocculation tank and the secondary flocculation tank of connection, and wherein one-level flocculation tank has following structure: comprise the upper groove 1 of connection and lower groove 2, and wherein electrode 3 is arranged in lower groove 2, is provided with whipping appts 4 in lower groove 2.
Described secondary flocculation tank 5 interelectrode distance is less than one-level flocculation tank interelectrode distance, and one-level flocculation tank interelectrode distance is 5-20mm, and secondary flocculation tank 5 interelectrode distance is 5-10cm.
Between secondary flocculation tank 5 and one-level flocculation tank, anti-backflow device is set.
A flucculation process for electroplating wastewater processing voltage pulse point flocculation technique device, carries out according to following steps:
1) first electroplating wastewater is passed into one-level flocculation tank, realize electric discharge by action of low-voltage pulse power supply, open whipping appts 4 simultaneously, once flocculate;
2), after once flocculating, electroplating wastewater enters secondary flocculation tank 5, flocculates, and arranges anti-backflow device between secondary flocculation tank 5 and one-level flocculation tank.
Concrete steps of the present utility model are as follows: first regulate waste water ph to be 4-5, specific conductivity is 500-5000us/cm; Then first step electricity flocculation treatment is entered: be 5-25V by the voltage between action of low-voltage pulse Energy control often pair of electrode 3, on battery lead plate, current density is 2-5mA/cm
2, interelectrode distance is 5-20mm, and retention time of sewage is 5-10min; It is 5-6 that reaction terminates rear adjustment waste water ph; Enter second stage electricity flocculation treatment again: be 3-10V by the voltage between direct supply or action of low-voltage pulse Energy control often pair of electrode 3, on electrode pad, current density is 1.5-5.6mA/cm
2, electrode 3 spacing is 5-10mm, and retention time of sewage is 15-40min.
The various parameters of above-mentioned appearance can be selected as the case may be, and the gordian technique of the application is arrangement form and its concrete structure formation of one-level flocculation tank, secondary flocculation tank 5, and it achieves better treatment effect within the shorter time.
The anti-backflow device that the application mentions possesses much different forms because of this kind of structure formation in mechanical field, and just do not do at this and launch to describe, the device that can realize this function all can be applicable among the application.
Claims (3)
1. an electroplating wastewater processing low voltage pulsed electric flocculation technology device, it is characterized in that, comprise one-level flocculation tank and the secondary flocculation tank of connection, wherein one-level flocculation tank has following structure: comprise the upper groove of connection and lower groove, wherein electrode is arranged in lower groove, is provided with whipping appts in lower groove.
2. a kind of electroplating wastewater processing action of low-voltage pulse point flocculation technique device according to claim 1, it is characterized in that, described secondary flocculation tank interelectrode distance is less than one-level flocculation tank interelectrode distance, and one-level flocculation tank interelectrode distance is 5-20mm, and secondary flocculation tank interelectrode distance is 5-10cm.
3. a kind of electroplating wastewater processing action of low-voltage pulse point flocculation technique device according to claim 1, is characterized in that, arrange anti-backflow device between secondary flocculation tank and one-level flocculation tank.
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CN201420354247.9U CN204039110U (en) | 2014-06-30 | 2014-06-30 | A kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device |
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CN201420354247.9U CN204039110U (en) | 2014-06-30 | 2014-06-30 | A kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104098160A (en) * | 2014-06-30 | 2014-10-15 | 扬州祥发资源综合利用有限公司 | Low-voltage pulse electric flocculation technological device for electroplating wastewater treatment and flocculation method thereof |
CN105776683A (en) * | 2016-05-11 | 2016-07-20 | 常熟林润氟硅材料有限公司 | High-frequency pulse electrochemical wastewater treatment system |
CN107032455A (en) * | 2017-06-20 | 2017-08-11 | 水极限(南京)环保科技有限公司 | Continous way electro-chemical water processing system and its method for treating water |
-
2014
- 2014-06-30 CN CN201420354247.9U patent/CN204039110U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104098160A (en) * | 2014-06-30 | 2014-10-15 | 扬州祥发资源综合利用有限公司 | Low-voltage pulse electric flocculation technological device for electroplating wastewater treatment and flocculation method thereof |
CN104098160B (en) * | 2014-06-30 | 2019-05-21 | 扬州祥发资源综合利用有限公司 | A kind of electroplating wastewater processing low voltage pulsed electric flocculation technology device and its flucculation process |
CN105776683A (en) * | 2016-05-11 | 2016-07-20 | 常熟林润氟硅材料有限公司 | High-frequency pulse electrochemical wastewater treatment system |
CN107032455A (en) * | 2017-06-20 | 2017-08-11 | 水极限(南京)环保科技有限公司 | Continous way electro-chemical water processing system and its method for treating water |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20210630 |