CN102531224B - A kind of method that bipseudoindoxyl dye reclaims and device - Google Patents
A kind of method that bipseudoindoxyl dye reclaims and device Download PDFInfo
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- CN102531224B CN102531224B CN201010620292.0A CN201010620292A CN102531224B CN 102531224 B CN102531224 B CN 102531224B CN 201010620292 A CN201010620292 A CN 201010620292A CN 102531224 B CN102531224 B CN 102531224B
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Abstract
The present invention relates to method and the device of the recovery of a kind of bipseudoindoxyl dye.Bipseudoindoxyl dye reclaim method and a device, it is characterized in that it comprises the steps: 1) waste water enter nonwoven fabric filter filter; 2) waste water after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, controls to add sulfuric acid make pH 5 ~ 8 by PLC; 3) in filtering basin, to prevent solid particulate from assembling on film, membrane flux is reduced to plate film assembly aeration, control to add sulfuric acid by PLC and make pH 3 ~ 6; 4) membrane module employing runs the operation scheme 5 that T1 minute suspends T2 minute) concentrate the concentrated solution of 10 times by the groove discharge recovery bottom filtering basin; 6) controlled by PLC, during filtering basin high-water, produce water vacuum primingpump and run; During filtering basin low-water level, the battery valve between filtering basin and oxidation pond is opened; During oxidation pond low-water level, former water vacuum primingpump is opened, and realizes thus automatically running.The present invention has the good feature of dyestuff recovering effect.
Description
Technical field
The present invention relates to the method and apparatus that a kind of bipseudoindoxyl dye reclaims, particularly relate to a kind of oxidizing and crystallizing-membrane processing method and reclaim bipseudoindoxyl dye method and apparatus.
Background technology
The dyeing of denim warp uses bipseudoindoxyl dye, adopts pulp technique.In well-known pulp waste water, colourity is large, and COD concentration is high, indigo molecular Stability Analysis of Structures, is extremely unmanageable waste water.Limit by pulp production technique and bipseudoindoxyl dye dye uptake, in the pulp waste water of discharge, bipseudoindoxyl dye content is considerable, and bipseudoindoxyl dye is very expensive, if recycle it, has very high economic benefit and social benefit.
The method reclaiming bipseudoindoxyl dye from waste water has: method of evaporation, the precipitator method, molecule embrane method etc.Method of evaporation will consume a large amount of heat energy, by the water evaporates in waste liquid, obtains the bipseudoindoxyl dye of minute quantity.In fact, except the needs of testing or analyze, almost nobody makes in this way in scale operation.The precipitator method are adding precipitation agent in fully oxidized waste liquid, makes the indigo suspensoid flocking settling of solid phase reach the object of separation.Molecular film is modern comparatively advanced method, and it reaches the object of collecting dyestuff from waste liquid by the permeable membrane effect of certain pressure.
Flat sheet membrane micro-filtration technique is impellent with static pressure difference, utilizes the membrane process that the sieving action of film is separated the component varied in size.Microfiltration membrane has comparatively neat and uniform vesicular structure, and under the effect of static pressure difference, the particulate being less than membrane pore size is by filter membrane, and the particle larger than aperture is then trapped within film surface.This technique can efficiently retain indigo particle, thus reaches the object reclaiming bipseudoindoxyl dye at concentrated solution.
Summary of the invention
The object of the present invention is to provide bipseudoindoxyl dye recovery method and equipment that a kind of bipseudoindoxyl dye recovering effect is good.
To achieve these goals, technical scheme of the present invention is: a kind of bipseudoindoxyl dye recovery method and equipment, is characterized in that it comprises the steps:
1) dyeing waste water enters strainer and carries out pre-filtering, removes the fibrous substance in water and large particulate matter;
2) waste water after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, makes indigo leuco compound crystallization, controls to add sulfuric acid make pH in pond maintain 5 ~ 8 by PLC;
3) when magnetic valve is opened, in oxidation pond, water enters filtering basin, reduces membrane flux in filtering basin to plate film assembly aeration to prevent solid particulate from assembling on film, controls to add sulfuric acid make pH in pond maintain 3 ~ 6 by PLC;
4) membrane module suction filtration sequential: run 3 minutes, suspends 2 minutes; Or run 3 minutes, suspend 1 minute; Or run 2 minutes, suspend 1 minute; Or run 4 minutes, suspend 3 minutes;
5) the indigo concentrated solution after suction filtration certain hour is discharged by the funnel trough bottom filtering basin and is reclaimed;
6) automatic operating is realized by PLC, when filtering basin high-water, produce water vacuum primingpump and run, membrane module is to extracardiac pumping, filtering basin liquid level reduces, battery valve when filtering basin low-water level between filtering basin and oxidation pond is opened, and water injects filtering basin by oxidation pond, and oxidation pond water level reduces, during oxidation pond low-water level, former water vacuum primingpump is opened, and water injects oxidation pond, realizes thus automatically running.
The equipment that bipseudoindoxyl dye reclaims, it comprises strainer 1, the first water pump 2, first water pipe 3, oxidation pond 4, the first micro porous aeration head 5, connecting water pipe 6, magnetic valve 7, filtering basin 8, plate film assembly 9, the second micro porous aeration head 10, funnel trough 11, valve 12, the second water pipe 13, second water pump 14, rising pipe 15, PLC 16, tensimeter 17, in succession strainer 1 in one end of first water pipe 3, the other end is positioned at oxidation pond 4, and the first water pipe 3 is provided with the first water pump 2; Oxidation pond 4 inner bottom part is provided with micropore first aeration head 5; Be communicated with by connecting water pipe 6 between oxidation pond 4 and filtering basin 8, be communicated with water pipe 6 and be provided with magnetic valve 7; There is plate film assembly 9 in filtering basin 8, be provided with the second micro porous aeration head 10 bottom plate film assembly 9, bottom filtering basin 8, be provided with funnel trough 11, bottom funnel trough 11, be provided with valve 12; Second water pipe 13 is ined succession plate film assembly 9, and the second water pipe 13 is provided with the second water pump 14; Tensimeter 17 is provided with above plate film assembly.
The method that the present invention adopts oxidizing and crystallizing to be combined with membrane treatment process, makes indigo leuco compound crystallization in solution by aerating oxidation, then is retained the indigo particle of more than 99% by flat sheet membrane micro-filtration technique, has the advantage that bipseudoindoxyl dye organic efficiency is high.
Flat sheet membranes treatment process of the present invention can make the colourity of waste water from dyestuff, turbidity, and suspended solids cuts down more than 95%, has the advantage of good sewage processing effect.
Accompanying drawing explanation
Fig. 1 is integrated bipseudoindoxyl dye retrieving arrangement structural representation of the present invention
In figure: 1-strainer, 2-first water pump, 3-first water pipe, 4-oxidation pond, 5-first micro porous aeration head, 6-connecting water pipe, 7-magnetic valve, 8-filtering basin, 9-plate film assembly, 10-second micro porous aeration head, 11-funnel trough, 12-valve, 13-second water pipe, 14-second water pump, 15-rising pipe, 16-PLC controller, 17-tensimeter
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1:
The method that bipseudoindoxyl dye reclaims, it comprises the steps:
1) dyeing waste water enters strainer and carries out pre-filtering, removes the fibrous substance in water and large particulate matter;
2) the waste water ` after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, makes indigo leuco compound crystallization, controls to add sulfuric acid make pH in pond maintain 8 by PLC;
3) when magnetic valve is opened, in oxidation pond, water enters filtering basin, reduces membrane flux in filtering basin to plate film assembly aeration to prevent solid particulate from assembling on film, controls to add sulfuric acid make pH in pond maintain 6 by PLC;
4) membrane module suction filtration sequential: run 3 minutes, suspends 2 minutes;
5) the indigo concentrated solution after suction filtration certain hour is discharged by the funnel trough bottom filtering basin and is reclaimed;
6) automatic operating is realized by PLC, when filtering basin high-water, produce water vacuum primingpump and run, membrane module is to extracardiac pumping, filtering basin liquid level reduces, battery valve when filtering basin low-water level between filtering basin and oxidation pond is opened, and water injects filtering basin by oxidation pond, and oxidation pond water level reduces, during oxidation pond low-water level, former water vacuum primingpump is opened, and water injects oxidation pond, realizes thus automatically running.
Repeating to carry out Membrane cleaning to plate film assembly after several same period significantly declines to flat sheet membrane flux.
Embodiment 2:
The method that bipseudoindoxyl dye reclaims, it comprises the steps:
1) dyeing waste water enters strainer and carries out pre-filtering, removes the fibrous substance in water and large particulate matter;
2) waste water after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, makes indigo leuco compound crystallization, controls to add sulfuric acid make pH in pond maintain 7 by PLC;
3) when magnetic valve is opened, in oxidation pond, water enters filtering basin, reduces membrane flux in filtering basin to plate film assembly aeration to prevent solid particulate from assembling on film, controls to add sulfuric acid make pH in pond maintain 4 by PLC;
4) membrane module suction filtration sequential: run 3 minutes, suspends 1 minute;
5) the indigo concentrated solution after suction filtration certain hour is discharged by the funnel trough bottom filtering basin and is reclaimed;
6) automatic operating is realized by PLC, when filtering basin high-water, produce water vacuum primingpump and run, membrane module is to extracardiac pumping, filtering basin liquid level reduces, battery valve when filtering basin low-water level between filtering basin and oxidation pond is opened, and water injects filtering basin by oxidation pond, and oxidation pond water level reduces, during oxidation pond low-water level, former water vacuum primingpump is opened, and water injects oxidation pond, realizes thus automatically running.
Repeating to carry out Membrane cleaning to plate film assembly after several same period significantly declines to flat sheet membrane flux.
Embodiment 3:
The method that bipseudoindoxyl dye reclaims, it comprises the steps:
1) dyeing waste water enters strainer and carries out pre-filtering, removes the fibrous substance in water and large particulate matter;
2) waste water after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, makes indigo leuco compound crystallization, controls to add sulfuric acid make pH in pond maintain 6 by PLC;
3) when magnetic valve is opened, in oxidation pond, water enters filtering basin, reduces membrane flux in filtering basin to plate film assembly aeration to prevent solid particulate from assembling on film, controls to add sulfuric acid make pH in pond maintain 5 by PLC;
4) membrane module suction filtration sequential: run 4 minutes, suspends 3 minutes;
5) the indigo concentrated solution after suction filtration certain hour is discharged by the funnel trough bottom filtering basin and is reclaimed;
6) automatic operating is realized by PLC, when filtering basin high-water, produce water vacuum primingpump and run, membrane module is to extracardiac pumping, filtering basin liquid level reduces, battery valve when filtering basin low-water level between filtering basin and oxidation pond is opened, and water injects filtering basin by oxidation pond, and oxidation pond water level reduces, during oxidation pond low-water level, former water vacuum primingpump is opened, and water injects oxidation pond, realizes thus automatically running.
Repeating to carry out Membrane cleaning to plate film assembly after several same period significantly declines to flat sheet membrane flux.
Embodiment 4:
The method that bipseudoindoxyl dye reclaims, it comprises the steps:
1) dyeing waste water enters strainer and carries out pre-filtering, removes the fibrous substance in water and large particulate matter;
2) waste water after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, makes indigo leuco compound crystallization, controls to add sulfuric acid make pH in pond maintain 5 by PLC;
3) when magnetic valve is opened, in oxidation pond, water enters filtering basin, reduces membrane flux in filtering basin to plate film assembly aeration to prevent solid particulate from assembling on film, controls to add sulfuric acid make pH in pond maintain 3 by PLC;
4) membrane module suction filtration sequential: run 2 minutes, suspends 1 minute;
5) the indigo concentrated solution after suction filtration certain hour is discharged by the funnel trough bottom filtering basin and is reclaimed;
6) automatic operating is realized by PLC, when filtering basin high-water, produce water vacuum primingpump and run, membrane module is to extracardiac pumping, filtering basin liquid level reduces, battery valve when filtering basin low-water level between filtering basin and oxidation pond is opened, and water injects filtering basin by oxidation pond, and oxidation pond water level reduces, during oxidation pond low-water level, former water vacuum primingpump is opened, and water injects oxidation pond, realizes thus automatically running.
Repeating to carry out Membrane cleaning to plate film assembly after several same period significantly declines to flat sheet membrane flux.As shown in Figure 1, a kind of bipseudoindoxyl dye recovery system, it comprises strainer 1, the first water pump 2, first water pipe 3, oxidation pond 4, the first micro porous aeration head 5, connecting water pipe 6, magnetic valve 7, filtering basin 8, plate film assembly 9, the second micro porous aeration head 10, funnel trough 11, valve 12, the second water pipe 13, second water pump 14, rising pipe 15, PLC 16, tensimeter 17, in succession strainer 1 in one end of first water pipe 3, the other end is positioned at oxidation pond 4, and the first water pipe 3 is provided with the first water pump 2; Oxidation pond 4 inner bottom part is provided with micropore first aeration head 5; Be communicated with by connecting water pipe 6 between oxidation pond 4 and filtering basin 8, be communicated with water pipe 6 and be provided with magnetic valve 7; There is plate film assembly 9 in filtering basin 8, be provided with the second micro porous aeration head 10 bottom plate film assembly 9, bottom filtering basin 8, be provided with funnel trough 11, bottom funnel trough 11, be provided with valve 12; Second water pipe 13 is ined succession plate film assembly 9, and the second water pipe 13 is provided with the second water pump 14; Tensimeter 17 is provided with above plate film assembly.
Whole equipment water inlet and water outlet are all aspirate with water pump.First water pump 2, magnetic valve 7 and the second water pump 14 switch are all controlled by PLC 16.
Claims (3)
1. a method for bipseudoindoxyl dye recovery, is characterized in that it comprises the steps:
1) dyeing waste water enters strainer and carries out pre-filtering, removes the fibrous substance in water and large particulate matter;
2) waste water after filtering squeezes into oxidation pond by pump, blast aeration in oxidation pond, makes indigo leuco compound crystallization, controls to add sulfuric acid make pH in pond maintain 5 ~ 8 by PLC;
3) when magnetic valve is opened, in oxidation pond, water enters filtering basin, reduces membrane flux in filtering basin to plate film assembly aeration to prevent solid particulate from assembling on film, controls to add sulfuric acid make pH in pond maintain 3 ~ 6 by PLC;
4) membrane module suction filtration sequential: run 3 minutes, suspends 2 minutes; Or run 3 minutes, suspend 1 minute; Or run 2 minutes, suspend 1 minute; Or run 4 minutes, suspend 3 minutes;
5) the indigo concentrated solution after suction filtration certain hour is discharged by the funnel trough bottom filtering basin and is reclaimed;
6) automatic operating is realized by PLC, when filtering basin high-water, produce water vacuum primingpump and run, membrane module is to extracardiac pumping, filtering basin liquid level reduces, magnetic valve when filtering basin low-water level between filtering basin and oxidation pond is opened, and water injects filtering basin by oxidation pond, and oxidation pond water level reduces, during oxidation pond low-water level, former water vacuum primingpump is opened, and water injects oxidation pond, realizes thus automatically running.
2. realize a kind of bipseudoindoxyl dye recovery system of method described in claim 1, it comprises strainer (1), first water pump (2), first water pipe (3), oxidation pond (4), first micro porous aeration head (5), connecting water pipe (6), magnetic valve (7), filtering basin (8), plate film assembly (9), second micro porous aeration head (10), funnel trough (11), valve (12), second water pipe (13), second water pump (14), rising pipe (15), PLC (16), tensimeter (17), in succession strainer (1) in one end of first water pipe (3), the other end is positioned at oxidation pond (4), first water pipe (3) is provided with the first water pump (2), oxidation pond (4) inner bottom part is provided with micropore first aeration head (5), be communicated with by connecting water pipe (6) between oxidation pond (4) and filtering basin (8), connecting water pipe (6) is provided with magnetic valve (7), plate film assembly (9) is had in filtering basin (8), plate film assembly (9) bottom is provided with the second micro porous aeration head (10), filtering basin (8) bottom is provided with funnel trough (11), and funnel trough (11) bottom is provided with valve (12), second water pipe (13) is ined succession plate film assembly (9), and the second water pipe (13) is provided with the second water pump (14), tensimeter (17) is provided with above plate film assembly.
3. a kind of bipseudoindoxyl dye recovery system according to claim 2, is characterized in that: the first water pump (2), magnetic valve (7) and the second water pump (14) switch are all controlled by PLC (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010620292.0A CN102531224B (en) | 2010-12-22 | 2010-12-22 | A kind of method that bipseudoindoxyl dye reclaims and device |
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| CN201010620292.0A CN102531224B (en) | 2010-12-22 | 2010-12-22 | A kind of method that bipseudoindoxyl dye reclaims and device |
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| CN102531224B true CN102531224B (en) | 2015-12-02 |
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| CN107857407A (en) * | 2017-11-30 | 2018-03-30 | 新乡市新科防护科技有限公司 | A kind of textile-dyeing machines reclaims circulation filter with dyestuff |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258555A (en) * | 1999-12-17 | 2000-07-05 | 费兴祖 | Double filter layer filtering bed process for treating printing and dyeing effluents |
| CN101224357A (en) * | 2007-10-26 | 2008-07-23 | 东华大学 | Two-stage dynamic membrane filtering method for printing and dyeing wastewater recycling |
| CN101376747A (en) * | 2008-10-10 | 2009-03-04 | 江苏工业学院 | Method for recycling bipseudoindoxyl dye from indigo dyeing waste water |
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- 2010-12-22 CN CN201010620292.0A patent/CN102531224B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258555A (en) * | 1999-12-17 | 2000-07-05 | 费兴祖 | Double filter layer filtering bed process for treating printing and dyeing effluents |
| CN101224357A (en) * | 2007-10-26 | 2008-07-23 | 东华大学 | Two-stage dynamic membrane filtering method for printing and dyeing wastewater recycling |
| CN101376747A (en) * | 2008-10-10 | 2009-03-04 | 江苏工业学院 | Method for recycling bipseudoindoxyl dye from indigo dyeing waste water |
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