CN102515316A - Device for treating printing and dyeing wastewater by using micro electric field - Google Patents
Device for treating printing and dyeing wastewater by using micro electric field Download PDFInfo
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- CN102515316A CN102515316A CN2012100022406A CN201210002240A CN102515316A CN 102515316 A CN102515316 A CN 102515316A CN 2012100022406 A CN2012100022406 A CN 2012100022406A CN 201210002240 A CN201210002240 A CN 201210002240A CN 102515316 A CN102515316 A CN 102515316A
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- water
- tank body
- magnetizing
- waste water
- electric microfield
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Abstract
The invention relates to a device for treating printing and dyeing wastewater by using a micro electric field, comprising a micro electric field system, a magnetizing system and an external circulating system, wherein the micro electric field system is a main body of the device and consists of a cylindrical tank body and iron-carbon packing filled in the cylindrical tank body, a waste water distributing plate 2 is arranged above the inside of the tank body, a packing supporting plate 3 is arranged below the inside of the tank body, and the lower part of the tank body is provided with a water outlet; the magnetizing system is arranged outside the top of a main tank body and comprises 1-4 magnetizing tubes 6, external magnets 7 of the magnetizing tubes and an alternating source, and a water inlet tube is connected with the main tank body through a magnetizing tube; and the external circulating system of waste water mainly comprises a filter 5, a pump body 4 and a circulating pipeline connected with a water inlet tube and the water outlet of the tank body.
Description
Technical field
The invention belongs to the environmental protection field, it relates to a kind of electric microfield that magnetizing system and waste water external circulating system are housed and handles waste water plant, principle and method of use.
Background technology
Utilizing electric microfield to handle waste water has plurality of advantages, especially can realize the recycling of waste, is called as " environmental friendliness " type technology.
But this technological shortcoming is the increase along with the wastewater treatment time, and microelectrode is prone to passivation, and the iron carbon filler is prone to caking etc., and the system working efficiency is descended.
Address the above problem at present and improve the electric microfield device and mainly contain following several kinds of schemes:, design " silk rod " electric microfield material of a kind of novelty from regular material angle; Adopt the PVC entrapping method, the iron carbon dust is processed particle again; Iron carbon fixation bed is transformed into fluidized-bed reactor; Add the weak voltage amount and regularly change positive and negative electrode with passivation phenomenon of slowing down iron carbon fixation bed etc.
Apparatus of the present invention design characteristic is on the basis of former iron carbon fixation bed, to install magnetizing system additional and waste water is separated the recycle system, further to improve the iron filings filter, increases work efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of electric microfield and handle waste water plant and method of use.
Fig. 1 is seen in apparatus of the present invention structural representation, mainly comprises electric microfield system, magnetizing system and external circulating system etc.
1 electric microfield system
Agent set is made up of the tank body of interior dress iron carbon filler.Oxygen is relevant with oxygen carrier in the passivation of iron carbon electric microfield reaction in wastewater treatment, main and system, and polarized action can make electronics on negative electrode, excessively accumulate, and the generation of oxygenate then makes the anode surface passivation:
O
2+2Fe→2FeO
2OH
-+Fe→FeO+H
2O+2e
O
2-+Fe→FeO+2e
In addition, the incrustation scale of iron carbon granule surface deposition and the foreign material that adhere to also are reasons of system function passivation.
2 magnetizing assemblys
Have after water is magnetized except that the effect of descale with the flocculation pollutent, and can produce hydrogen ion, hydrogen ion is good depolarizer, can effectively clear up cathode surface, also can abolish the anode passivation film simultaneously.
FeO+2H
+→2Fe
2++H
2O
O
2+4H
++4e→2H
2O
OH
-+H
+→H
2O
O
2-+2H
+→H
2O
In order to strengthen magnetization, this system is used alternating electric field.
3 external circulating devices
At present, what the electric microfield device adopted is fixed bed, and retention time of sewage is generally 30-240 minute, is in relative static conditions so can be considered between iron carbon filler and the waste water medium.This device adopts the waste water external circulating device, and what make that waste water do not stop does relative movement with the iron carbon filler, to clean microbattery, prevents the formation of passive film and incrustation scale, has played the effect of relative current movable bed.Simultaneously, additional waste water external circulating device also is crucial to the magnetization that strengthens magnetizing system.
Advantage compared with prior art of the present invention:
The electric microfield wastewater treatment equipment that 1 present technique system is comparatively perfect can independently carry out work, and particularly for handling moderate and slight dyeing waste water, organic waste water and chromate waste water etc., effect is remarkable.
2 said apparatus have self cleaning and mobilizing function, but life-time service need not add any material, particularly chemical agent, has kept the technical characterictic of " environmentally friendly " wastewater treatment equipment.
Description of drawings
Fig. 1 is the electric microfield wastewater treatment equipment that the present invention relates to.
Nomenclature
In the accompanying drawing, 1-main body jar; 2-waste water break plate; 3-filler supporting plate; The 4-pump housing; The 5-filter; The 6-magnetizing tube; 7-magnet (alternating source).
The practical implementation method
Apparatus main body of the present invention by cylindrical tank 1 and in the electric microfield system that forms of the iron carbon filler filled out, waste water break plate 2 is equipped with in the top in the tank body, filler supporting plate 3 is equipped with in the below.Magnetizing system is installed in top, outside, main tank body top, comprises 1-4 magnetizing tube 6, outside the magnetizing tube 6 external placed type magnet 7 and alternating source is arranged, and magnetizing tube is connected with main tank body with water inlet pipe respectively.The waste water external circulating system mainly comprises filter 5, the pump housing 4 and circulation line.
At first open the influent waste water valve, waste water is connected the magnetizing apparatus power supply simultaneously by the water inlet pipe input system; Make waste water get into tank body, the electric microfield reaction takes place, close water intaking valve after waiting to pile the main body jar through the adjustable magnetizing system of the specific magnetising moment; The ON cycle water valve makes waste water get into external circulation line, forms flow cycle with the intravital waste water of jar; But thereby possess high flow condition, the high process characteristic that magnetizes efficient, high cell reaction efficient and automatically cleane, accomplish waste water circulation 1-2 time, waste water residence time in device is 10-15 minute; Open the discharge water water discharge valve at last, the discharge water after finishing dealing with is discharged by water shoot.Its concrete processing parameter is relevant with the working (machining) efficiency design with the device specification, generally comprises by tank body specification, filler composition ratio and granularity, magneticstrength, waste water loop cycle etc.
Embodiment
Waste water is taken from the total drain of Changchun printing and dyeing mill, comprises the dyeing waste water and the sewage of the said firm, and composition is unstable, COD content 1000g/L-2000g/L; Colourity is bigger, and dye species has activity, acidity, intellectual circle's (vat dyes) and dispersed dye etc., and wherein reactive dyestuffs content is higher.BOD
5Content is not high, and the waste water pH value is 8, shows slightly alkalescence, and the adjusting pH value is 4-5.
Apparatus main body jar specification φ 1000 * 800mm, material is a steel plate; Filler is a cast iron filing, interior mixed activated carbon, ratio of mixture 5: 1, granularity 1-2mm
3Waste water loop cycle 10 minutes, flow 8L/sec; Magnetizing apparatus magneticstrength 0.1-0.5T, adjustable.
Treatment effect
1 percent of decolourization: 93%
2COD value: waste water 1280 (mg/L) treating water 153.6 (mg/L), clearance 88%.
3PH value: normal.
Claims (4)
1. the device of an electric microfield treatment of dyeing wastewater is characterized in that being made up of electric microfield system, magnetizing system and external circulating system; Wherein the electric microfield system forms by filling out the iron carbon filler in cylindrical tank, the tank body, and waste water break plate 2 is equipped with in the top in the tank body, and filler supporting plate 3 is equipped with in the side in the tank body, and tank body top water-in connects magnetizing tube 6, and tank base connects water outlet; Magnetizing system is installed in outside the main tank body top, comprises 1-4 the magnetizing tube 6 that is connected with the tank body top, the external placed type magnet 7 and the alternating source of magnetizing tube 6; External circulating system is by strainer 5, the pump housing 4 and circulation line; Circulation line connects the water inlet pipe of magnetizing tube 6, and this water inlet pipe gets into through waste water water valve control waste water or recirculated water, and the tank base water outlet gets into circulation line by water discharge valve control draining or control draining through filter 4.
2. the device of electric microfield treatment of dyeing wastewater as claimed in claim 1 is characterized in that described magnetizing system magneticstrength 0.1-0.5T.
3. the device of electric microfield treatment of dyeing wastewater as claimed in claim 1 is characterized in that described iron carbon filler is 5: 1 cast iron filing of ratio of mixture and activated carbon; Granularity 1-2mm
3
4. a kind of according to claim 1 device of electric microfield treatment of dyeing and printing; At first open the influent waste water valve when it is characterized in that using, connect the magnetizing apparatus power supply simultaneously, close water intaking valve after waiting to pile the main body jar; The ON cycle water valve; Accomplish waste water circulation 1-2 time, waste water residence time in device is 10-15 minute, opens the discharge water water discharge valve at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210002240 CN102515316B (en) | 2012-01-05 | 2012-01-05 | Device for treating printing and dyeing wastewater by using micro electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210002240 CN102515316B (en) | 2012-01-05 | 2012-01-05 | Device for treating printing and dyeing wastewater by using micro electric field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102515316A true CN102515316A (en) | 2012-06-27 |
| CN102515316B CN102515316B (en) | 2013-07-24 |
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ID=46286467
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210002240 Expired - Fee Related CN102515316B (en) | 2012-01-05 | 2012-01-05 | Device for treating printing and dyeing wastewater by using micro electric field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311386A (en) * | 2017-08-25 | 2017-11-03 | 南京工业大学 | Treatment method of nonionic surfactant wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104651A (en) * | 1997-10-02 | 1999-04-20 | Toray Ind Inc | Purification of photosensitive resin-containing waste water, production of printing plate and printing plate developing apparatus |
| US20020036175A1 (en) * | 1995-11-02 | 2002-03-28 | Jeffry Held | Method and apparatus for the molecular destruction of waste-activated sludge using high electrical voltage |
| CN201264932Y (en) * | 2008-08-11 | 2009-07-01 | 俞经纹 | Oxygen-free catalytic reactor for wastewater treatment |
| CN102139939A (en) * | 2011-04-29 | 2011-08-03 | 东莞市星火环保科技有限公司 | Printing and dyeing waste water treatment system |
-
2012
- 2012-01-05 CN CN 201210002240 patent/CN102515316B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020036175A1 (en) * | 1995-11-02 | 2002-03-28 | Jeffry Held | Method and apparatus for the molecular destruction of waste-activated sludge using high electrical voltage |
| JPH11104651A (en) * | 1997-10-02 | 1999-04-20 | Toray Ind Inc | Purification of photosensitive resin-containing waste water, production of printing plate and printing plate developing apparatus |
| CN201264932Y (en) * | 2008-08-11 | 2009-07-01 | 俞经纹 | Oxygen-free catalytic reactor for wastewater treatment |
| CN102139939A (en) * | 2011-04-29 | 2011-08-03 | 东莞市星火环保科技有限公司 | Printing and dyeing waste water treatment system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311386A (en) * | 2017-08-25 | 2017-11-03 | 南京工业大学 | Treatment method of nonionic surfactant wastewater |
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|---|---|
| CN102515316B (en) | 2013-07-24 |
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Granted publication date: 20130724 Termination date: 20140105 |