CN102328977A - Method for discoloring printing and dyeing wastewater by using granulated composite bentonite material - Google Patents
Method for discoloring printing and dyeing wastewater by using granulated composite bentonite material Download PDFInfo
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- CN102328977A CN102328977A CN201110152061A CN201110152061A CN102328977A CN 102328977 A CN102328977 A CN 102328977A CN 201110152061 A CN201110152061 A CN 201110152061A CN 201110152061 A CN201110152061 A CN 201110152061A CN 102328977 A CN102328977 A CN 102328977A
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- waste water
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Abstract
The invention relates to a method for discoloring printing and dyeing wastewater by using a granulated composite bentonite material, which comprises the steps of: proportioning, mixing, plasticizing, extruding, cooling and cutting bentonite and thermoplastic high-molecule polymers into short column granules to obtain the granulated composite bentonite material; putting the granulated composite bentonite material together with surface active agent into the printing and dyeing wastewater; oscillation for 10-15min; and then conducting solid-liquid separation, wherein colored dye reacts with the surface active agent to produce flocculation which is removed into solid samples which are filtered and separated. The method has the advantages that the complex preparation method of organic bentonite is omitted, the secondary pollution of the surface active agent is reduced, the discoloring time is short, the discoloring efficiency is high, the solid-liquid separation is easy and the granulated composite bentonite material can be reused. The method is suitable for discoloring colored dye wastewater which contains indicarmine or methyl orange.
Description
One, technical field
The present invention relates to the method that a kind of granulation composite bentonite material is used for decolorizing printing and dyeing waste water.
Two, background technology
In recent years, the quantity discharged of dyeing waste water increases year by year, and dyeing waste water has become one of main deleterious trade effluent of China.Organic constituent in the waste water is a parent with aromatic hydrocarbons and heterogeneous ring compound mostly, and has colour developing group and polar group.Also contain more raw material and sub product in the waste water, like halogenide, nitro thing, aniline, phenols etc., and inorganic salt such as NaCl, Na
2SO
4, Na
2S etc.Because the DYE PRODUCTION kind is many, replacement of products is frequent, and develops towards anti-photodissociation, antibiont oxidation direction, thereby the treatment of dyeing wastewater difficulty is strengthened.The difficulty in treatment of dyeing waste water: the one, COD is high, and the BOD/COD value is less, COD concentration can reach thousands of mgL
-1, biodegradability is poor; The 2nd, colourity is high, and component is complicated, and especially remaining dye component in the waste water even concentration is very low, enters water body and also can reduce the water body transmittance, the harm water ecosystem.Removal and the decolouring of COD have dependency, but the solution difficulty of decolouring problem is bigger.Therefore decolorization of dyeing has become the key of its governance process.In current common chemistry, biology and physical decolorization treatment process, the most simple and effective with the adsorption bleaching of physics method.Up to now, the decolorizing adsorbent of most excellent is a gac.But, make its limited use because gac costs an arm and a leg and the regeneration expense is high.Therefore, the efficient cheap sorbent material of exploitation and the efficient decolorizing of dyeing waste water handled the focus that has become research.
Wilkinite is to be the clay rock of staple with the smectite, has excellent absorption and cation exchange property.The applied research of wilkinite in dyeing water treatment in recent years obtained lot of domestic and foreign scholar's extensive concern.A lot of researchs show; Natural montmorillonite is because the surface silicon oxide structure has extremely strong wetting ability and the cationic hydrolysis of a large amount of interchangeabilities of interlayer; Make its surface have the thin moisture film of one deck usually, can not the active adsorption hydrophobic organic pollutant, the wilkinite that therefore is used for dyeing water treatment is handled through organically-modified, cross-linking modified or acid activation usually; Wherein organic bentonite uses at most, especially through surfactant-modified organobentonite.But many scholars find that still there are problems in such organobentonite in the practical application of dyeing water treatment, such as: its solid-liquid separation difficulty behind the pollutent in the organobentonite adsorption treatment dyeing waste water; Utilize tensio-active agent synthetic organobentonite to handle behind the waste water if do not recycle, cost is too high; Along with a large amount of uses of tensio-active agent, be prone to water body is caused secondary pollution; And conventional organobentonite synthesis technique is complicated, consuming time, power consumption, has also limited its practical application in industrial wastewater treatment.
Three, summary of the invention
To the problems referred to above, the present invention proposes a kind of new decolorizing printing and dyeing waste water treatment process, the granulation bentonite composite material that promptly utilizes own patented technology to prepare, and synergistic surfactant is used for the decolorization of dyeing processing.
The purpose of this invention is to provide the method that a kind of granulation composite bentonite material is used for decolorizing printing and dyeing waste water, mainly solve organobentonite and in water and wastewater treatment, be difficult to solid-liquid separation and the low problem of decolorizing printing and dyeing waste water rate.
The present invention realizes above-mentioned purpose through following technical scheme,
A kind of granulation composite bentonite material is used for the method for decolorizing printing and dyeing waste water, comprises wilkinite and thermoplastic polyester are prepared burden, batch mixing, extruded, cool off, and is cut into the granulation composite bentonite material of short cylinder, and this method also has following steps,
1, the granulation composite bentonite material that adds the said short cylinder of 20～100g by every liter of dyeing waste water; Every 5g dyestuff adds the ratio of tensio-active agent 1～3g and puts in the dyeing waste water simultaneously; Vibration 10～15min; Carry out solid-liquid separation then, coloured dyestuff is removed in the solid-like that filters to isolate with the form with tensio-active agent reaction generation flocculation.
2, wash above-mentioned solid-like with tap water, flocculation material granule surface from the compound swelling is removed, use the aperture to sift out granulation composite bentonite material as the sieve of 5mm again, this composite bentonite material is recycled and reused for decolorization of dyeing and handles.
Described wilkinite is natural montmorillonite or purification wilkinite.
Described thermoplastic polyester is the combination of Vilaterm, polyacrylic one or both different ratioss.
Described tensio-active agent is palmityl trimethyl ammonium chloride or cetyl trimethylammonium bromide.
Said dyeing waste water is the waste water that contains sodium indigodisulfonate or tropeolin-D.
Outstanding technique effect of the present invention is:
Through granulation composite bentonite material and tensio-active agent are acted synergistically to dyeing waste water together; Make coloured dyestuff and tensio-active agent reaction in the dyeing waste water generate a large amount of flocculations; Pass through solid-liquid separation; Effectively remove this flocculation, promptly removed the coloured dyestuff in the dyeing waste water, decolorizing effect is obvious.This method has been saved the complicated preparation process of organobentonite, has reduced the secondary pollution of tensio-active agent, and bleaching time is short, and percent of decolourization is high, and solid-liquid separation is easy, and granulation composite bentonite material can reuse.
Four, embodiment
Embodiment 1
Get natural montmorillonite 70wt%, add thermoplastic polyester Vilaterm 30wt%, stir 30min.Then the sample that mixes is added plastics extruder and carry out batch mixing, plastify and extrude, obtain the fine strip shape product, it directly gets into tank cooling, cutting, obtains the short cylinder sorbent material at last.
The granulation composite bentonite material that adds the said short cylinder of 20～100g by every liter of dyeing waste water; Every 5g dyestuff adds the ratio of tensio-active agent 1～3g and puts in the dyeing waste water simultaneously; Solid-liquid separation behind vibration 10～15min; After cleaning was attached on the flocculation of short cylinder particle surface, the short cylinder particle was recycled and reused for decolorization of dyeing again and handles.
To handle sodium indigodisulfonate is example, and getting volume is 50ml, and concentration is 50mg/L sodium indigodisulfonate waste water; Drop into 1g granulation bentonite composite material and 0.01g palmityl trimethyl ammonium chloride tensio-active agent; Vibration 10min, solid-liquid separation, the percent of decolourization of simulated wastewater reaches 91%.
Embodiment 2
Get natural montmorillonite 70wt%, add thermoplastic polyester Vilaterm 30wt%, stir 30min.Then the sample that mixes is added plastics extruder and carry out batch mixing, plastify and extrude, obtain the fine strip shape product, it directly gets into tank cooling, cutting, obtains the short cylinder sorbent material at last.
The granulation composite bentonite material that adds the said short cylinder of 20～100g by every liter of dyeing waste water; Every 5g dyestuff adds the ratio of tensio-active agent 1～3g and puts in the dyeing waste water simultaneously; The solid-liquid separation after 10～15min minute of vibrating; After cleaning was attached on the flocculation of short cylinder particle surface, the short cylinder particle was recycled and reused for decolorization of dyeing again and handles.
To handle tropeolin-D is example, and getting volume is 50ml, and concentration is 50mg/L tropeolin-D simulated wastewater; Drop into 5g granulation bentonite composite material and 0.01g palmityl trimethyl ammonium chloride tensio-active agent; Vibration 15min, solid-liquid separation, the percent of decolourization of simulated wastewater reaches 96%.
Embodiment 3
Get natural montmorillonite 70wt%, add thermoplastic polyester polipropene 25 wt% and Vilaterm 5wt% again, stirred 15 minutes.Then the sample that mixes is added plastics extruder and carry out batch mixing, plastify and extrude, obtain the fine strip shape product, resulting fine strip shape product is put into tank cooling, cutting, obtain the short cylinder sorbent material at last.
The granulation composite bentonite material that adds the said short cylinder of 20～100g by every liter of dyeing waste water; Every 5g dyestuff adds the ratio of tensio-active agent 1～3g and puts in the dyeing waste water simultaneously; Solid-liquid separation behind vibration 10～15min; After cleaning was attached on the flocculation of short cylinder particle surface, the short cylinder particle was recycled and reused for decolorization of dyeing again and handles.
To handle sodium indigodisulfonate is example, and getting volume is 50ml, and concentration is 50mg/L sodium indigodisulfonate simulated wastewater; Drop into 3g granulation bentonite composite material and 0.01g cetyl trimethylammonium bromide tensio-active agent; Vibration 10min, solid-liquid separation, the percent of decolourization of simulated wastewater reaches 98%.
Claims (3)
1. a granulation composite bentonite material is used for the method for decolorizing printing and dyeing waste water; Comprise wilkinite and thermoplastic polyester are prepared burden, batch mixing, extruded, cool off, be cut into the granulation composite bentonite material of short cylinder, it is characterized in that; This method also has following steps
(1) presses the granulation composite bentonite material that every liter of dyeing waste water adds the said short cylinder of 20～100g; Every 5g dyestuff adds the ratio of tensio-active agent 1～3g and puts in the dyeing waste water simultaneously; Behind vibration 10～15min; Coloured dyestuff is removed in the solid-like that filters to isolate with the form with tensio-active agent reaction generation flocculation
(2) wash above-mentioned solid-like with tap water, flocculation is removed from composite bentonite material granule surface, use the aperture to sift out granulation composite bentonite material as the sieve of 5mm again, this composite bentonite material is recycled and reused for decolorization of dyeing and handles.
2. granulation composite bentonite material according to claim 1 is used for the method for decolorizing printing and dyeing waste water, it is characterized in that, described tensio-active agent is palmityl trimethyl ammonium chloride or cetyl trimethylammonium bromide.
3. granulation composite bentonite material according to claim 1 is used for the method for decolorizing printing and dyeing waste water, it is characterized in that, said dyeing waste water is the waste water that contains sodium indigodisulfonate or tropeolin-D.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110152061A CN102328977A (en) | 2011-06-08 | 2011-06-08 | Method for discoloring printing and dyeing wastewater by using granulated composite bentonite material |
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| CN201110152061A CN102328977A (en) | 2011-06-08 | 2011-06-08 | Method for discoloring printing and dyeing wastewater by using granulated composite bentonite material |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843951A (en) * | 2006-04-19 | 2006-10-11 | 浙江大学 | Method for treating printing/dyeing waste water |
| CN102000541A (en) * | 2010-11-22 | 2011-04-06 | 广西大学 | Spongy bentonite-based composite adsorbing material and preparation method thereof |
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2011
- 2011-06-08 CN CN201110152061A patent/CN102328977A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843951A (en) * | 2006-04-19 | 2006-10-11 | 浙江大学 | Method for treating printing/dyeing waste water |
| CN102000541A (en) * | 2010-11-22 | 2011-04-06 | 广西大学 | Spongy bentonite-based composite adsorbing material and preparation method thereof |
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Application publication date: 20120125 |