CN101161926A - Regeneration processing method for waste paper - Google Patents
Regeneration processing method for waste paper Download PDFInfo
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- CN101161926A CN101161926A CNA2007101801223A CN200710180122A CN101161926A CN 101161926 A CN101161926 A CN 101161926A CN A2007101801223 A CNA2007101801223 A CN A2007101801223A CN 200710180122 A CN200710180122 A CN 200710180122A CN 101161926 A CN101161926 A CN 101161926A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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Abstract
The present invention relates to a method for recycling waste paper, which does not generate chlorine and AOX (organic halogen with adsorbability) with circumstance problem when effectively recycling waste paper containing fluorescence dye, fluorescence caused by fluorescence dye contained in waster paper can be eliminated or restrained, and a waste paper recycling method providing recycled paper pulp with same high quality is provided. Concretely the invention provides a method for recycling waste paper containing fluorescence dye, which is characterized by recycling waster paper in existence of organic peroxide or inorganic peroxoic acid compound.
Description
Technical field
When the present invention relates to utilize the waste paper that is reclaimed again, the fluorescence that causes by the fluorescent dye of eliminating or suppress to contain in the waste paper and effectively utilize the regeneration treating method of waste paper and the recycled writing paper that utilizes again by this method again.
Background technology
When the use amount of paper increases,, and the purposes that this regenerated paper pulp is used in new paper raw material again enlarged every year from the job lot paper regenerated paper pulp.Particularly nearest, owing to environmental problem makes the utilization rate of waste paper and use field that the tendency that increases be arranged every year, but these waste paper comprise a large amount of fluorescent dye paper treated of using mostly.Particularly in requiring the paper of whiteness, nearly all handle and carry out the adjusting of whiteness by fluorescent dye.
But, in the paper products that use regenerated paper pulp, the purposes of the painted or fluorescence radiation that restricted coloured dyestuff or fluorescent dye produce is the paper handkerchief or the direct paper products of contact food for example, in addition, the paper of using such as senior printing or fields such as copy paper, impact paper is also arranged, only used magma under these situations, but the angle that the retree from energy problem, resource problem and environmental problem, manufacturing process utilizes again considers that waste paper is used in requirement in the past.
Only remove the waste paper of handling by fluorescent dye in the waste paper that from utilize again, uses and to spend a large amount of work, very difficulty.
As the method for eliminating or suppress the painted or fluorescence in the waste paper, disclose use clorox to handle waste paper method (for example, patent documentation 1), the method for use chlorine dioxide treatment waste paper (for example, patent documentation 2), use the method (for example, patent documentation 3) of the slaine processing waste paper of DCCA.But it is all insufficient that its fluorescence suppresses effect, can not with the equal high-quality regenerated paper pulp of magma.In addition, worry to produce chlorine, produce AOX (the organic halogen material that adsorptivity is arranged) from DCCA salt from clorox or chlorine dioxide.From the viewpoint of environmental problem, these are not preferred yet.
In addition, disclose the method (for example, patent documentation 4) of using ozone treatment waste paper, still, needed to be provided with the special generating means of ozone in this method, thus from economically with safety on have problems.
Patent documentation 1: Japanese kokai publication sho 62-97993 communique
Patent documentation 2: Japanese kokai publication hei 11-269788 communique
Patent documentation 3: No. 3118087 communique of Japan Patent
Patent documentation 4: Japanese kokai publication hei 3-199477 communique
Summary of the invention
In view of above-mentioned condition, the purpose of this invention is to provide a kind ofly when regeneration contains the waste paper of fluorescent dye, do not produce the chlorine or the AOX that worry problem on the environment, safe, easy, and the elimination of fluorescence or suppress the good regeneration treating method of effect.
To achieve these goals, the inventor etc. have carried out research extensively and profoundly, thereby have finished the present invention.That is, the present invention relates to following (1) to (7).
(1) a kind of waste paper regenerated processing method, described waste paper contains fluorescent dye, the method is characterized in that, handles waste paper in the presence of organic peroxide or inorganic peroxy acid (ペ Le オ キ ソ acid).
(2), it is characterized in that processing is to separate at the disintegration (of waste paper From according to (1) described waste paper regenerated processing method), sorting (Election is other), carry out in any operation of deinking, dedusting, washing or bleaching.
(3) according to (1) or (2) described waste paper regenerated processing method, it is characterized in that organic peroxide is the peroxide of benzoic peroxide or benzoic acid derivative.
(4) according to (1) or (2) described waste paper regenerated processing method, it is characterized in that the inorganic peroxy acid compound is ammonium peroxydisulfate, sodium persulfate or potassium persulfate.
(5) according to (3) described waste paper regenerated processing method, it is characterized in that the use amount of the peroxide of benzoic peroxide or benzoic acid derivative is 0.5 weight % to 30 weight % with respect to old paper stock.
(6) according to (4) described waste paper regenerated processing method, it is characterized in that the use amount of ammonium peroxydisulfate, sodium persulfate or potassium persulfate is 0.9 weight % to 50 weight % with respect to old paper stock.
(7) a kind of recycled writing paper wherein is mixed with the regenerated paper pulp that 5 weight % to 95 weight % each described waste paper regenerated processing method by above-mentioned (1)～(6) obtains.
If contain the elimination or the inhibition of painted or fluorescence of the waste paper of coloured dyestuff or fluorescent dye by regeneration treating method of the present invention, in waste paper regenerated operation, do not produce the chlorine or the AOX that worry problem on the environment, safe, can carry out easy and economic waste paper regenerated processing.
The specific embodiment
Below describe the present invention in detail.The present invention contains the regeneration treating method of fluorescent dye waste paper, it is characterized in that, uses organic peroxide or inorganic peroxy acid compound treatment waste paper.
Be not particularly limited as the waste paper that uses in the regeneration treating method of the present invention, can enumerate newspaper, magazine waste paper, printed article waste paper, goods catalogue leaflet waste paper or from the waste paper of comprising of family and office by the paper of fluorescent dyeing.As the waste paper that uses in the regeneration treating method of the present invention, also passable by the waste paper that fluorescent dye and coloured dyestuff dyeed together.
Waste paper by disintegration, sorting, deinking, dedusting, washing, selected, bleach, copy the treatment process of paper and utilize again as paper.Regeneration treating method of the present invention can carry out in any one operation of the disintegration of Waste Paper Handling operation, sorting, deinking, dedusting, washing, selected or bleaching process.
As the organic peroxide that uses in the waste paper regenerated processing method of the present invention, for example can enumerate, peracetic acid, benzylhydroperoxide, metachloroperbenzoic acid, methyl ethyl ketone peroxide, dibenzyl peroxide, 1,3-bis(t-butylperoxy) benzene, 1,1-dibutyl peroxy cyclohexane, the peroxidating pivalic acid tert-butyl ester, the peroxy isopropyl base carbonic acid tert-butyl ester, dibenzoyl peroxide, isopropyl benzene hydroperoxide, tert-butyl hydroperoxide, two (o-methyl-benzene formyl) peroxide, cumyl t-butyl peroxide, di-t-butyl peroxide etc.Wherein, the peroxide of benzoic peroxide such as preferred benzylhydroperoxide, metachloroperbenzoic acid, dibenzoyl peroxide, two (o-methyl-benzene formyl) peroxide or benzoic acid derivative.
In the waste paper regenerated processing method of the present invention, the use amount of the peroxide of benzoic peroxide or benzoic acid derivative is extremely about 30 weight % of about 0.5 weight % with respect to old paper stock preferably, and more preferably about 1 weight % is to about 20 weight %.
As the inorganic peroxy acid compound, for example can enumerate SODIUM PERCARBONATE, potassium percarbonate, sodium perborate, potassium perborate, ammonium peroxydisulfate, sodium persulfate, potassium persulfate etc.Wherein, preferred ammonium peroxydisulfate, sodium persulfate, potassium persulfate etc.
In the waste paper regenerated processing method of the present invention, the use amount of ammonium peroxydisulfate, sodium persulfate, potassium persulfate is that about 0.9 weight % is to about 50 weight % with respect to old paper stock preferably, be preferably about 0.9 weight % to about 40 weight %, more preferably from about 0.9 weight % is to about 10 weight %.
The condition of regeneration treating method of the present invention is: in the water, in 5 to 90 ℃ of temperature, preferred 30 to 80 ℃, more preferably 50 to 70 ℃ of processing down.Treatment effect reduces during the temperature step-down.Waste paper amount in the treatment fluid is about 1 to about 40%, preferred about 2 to about 20%.Processing time is to get final product more than 0.5 hour approximately, preferred about 1 hour to about 10 hours.PH gets final product in 1 to 9 scope, preferred 2 to 8 scope.PH is 9 when above, has fluorescence to eliminate the tendency that effect reduces.
In the treatment fluid, can use alcohol simultaneously as required, monoethanolamine, glycol, glycerine, polyvinyl alcohol, polyethylene glycol, organic acid esters, choline, vegetable oil, urea, epsilon-caprolactams, polyacrylic acid, the pH buffer, digesting assistant, bleaching agent, disassociation agent (Xie From drug), sizing agent, the paper intensity reinforcing agent, the papery improver, filler, pitch control agent (ピ Star チ ユ Application ト ロ one Le drug), slime-control agent (ス ラ イ system ユ Application ト ロ one Le drug), washing agent, antiseptic, mould inhibitor, defoamer, the yield rate improving agent, flocculating agent, water-proofing agent, antistatic agent, transparentizing agent (transparence drug), the Surface Machining resin, soluble starch, deinking agent, surfactant, other oxidant etc.
In addition, the regenerated paper pulp of eliminating by regeneration treating method of the present invention or suppressed painted or fluorescence directly or with magma or other paper pulp can be mixed back manufacturing paper, also comprise these recycled writing papers among the present invention.Combined amount can be a ratio arbitrarily with respect to employed paper pulp, preferably can use with the ratio of 5 weight % to 95 weight %.
Embodiment
Illustrate in greater detail the present invention by the following examples.% represents weight % among the embodiment.Fluorescence intensity through copying the paper that paper forms is measured by ス ガ testing machine (strain) beam split whiteness colour meter " SC-10W " (trade name, ス ガ testing machine (strain) is made).
Embodiment 1
In pure water 35.5mL, add 0.15% solution 15.5mL of fluorescent dye " カ ヤ ホ one Le STC リ キ Star De " (Japanese chemical drug (strain) is made for trade name, stilbene fluorochrome).The BRATSK (Hiroshima Leaf Trees that adds solid component content 16.7% therein shines Network ラ Off ト パ Le プ) (hereinafter to be referred as LBKP) 12.0g, and stirred 10 minutes.Add the 0.01% rosin sizing agent aqueous solution " FR1900 " (starlight PMC (strain) makes for trade name, rosin based sizing agent) 2.0mL, further stirred 10 minutes.Add 0.03% aluminum sulfate aqueous solution 2.0mL, stirred again 10 minutes.Wash the LBKP of dyeing with water, and dehydration.
This LBKP is inserted among the pure water 100mL, and the caustic soda with 1% is adjusted to pH7.0, and warming while stirring rises to 50 ℃ with fluid temperature.To wherein adding metachloroperbenzoic acid 0.1g.The LBKP that handled 4 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 2
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, and the caustic soda with 1% is adjusted to pH7.0, and warming while stirring rises to 50 ℃ with fluid temperature.To wherein adding metachloroperbenzoic acid 0.05g.The LBKP that handled 4 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 3
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, and the caustic soda with 1% is adjusted to pH7.0, and warming while stirring rises to 50 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.2g.The LBKP that handled 8 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 4
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.2g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 5
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.14g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 6
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.1g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 7
In pure water 35.5mL, add 0.023% solution 10mL of fluorescent dye " カ ヤ ホ one Le STC リ キ Star De " (Japanese chemical drug (strain) is made for trade name, stilbene fluorochrome).Add BRATSK (hereinafter to be referred as the LBKP) 12.0g of solid component content 16.7% therein, and stirred 5 minutes.Add the 0.01% rosin sizing agent aqueous solution " FR1900 " (starlight PMC (strain) makes for trade name, rosin based sizing agent) 2.0mL, further stirred 5 minutes.Add 0.03% aluminum sulfate aqueous solution 2.0mL, stirred again 5 minutes.Wash the LBKP of dyeing with water, and dehydration.
This LBKP is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.1g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 8
The LBKP of dyeing among the embodiment 7 is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 70 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.04g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 9
In pure water 35.5mL, add 0.008% solution 10mL of fluorescent dye " カ ヤ ホ one Le STC リ キ Star De " (Japanese chemical drug (strain) is made for trade name, stilbene fluorochrome).Add BRATSK (hereinafter to be referred as the LBKP) 12.0g of solid component content 16.7% therein, and stirred 5 minutes.Add the 0.01% rosin sizing agent aqueous solution " FR1900 " (starlight PMC (strain) makes for trade name, rosin based sizing agent) 2.0mL, further stirred 5 minutes.Add 0.03% aluminum sulfate aqueous solution 2.0mL, stirred again 5 minutes.Wash the LBKP of dyeing with water, and dehydration.
This LBKP is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.02g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 10
The LBKP of dyeing among the embodiment 9 is inserted among the pure water 100mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 70 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.02g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 11
The LBKP of dyeing among the embodiment 9 is inserted among the pure water 100mL, and the NaOH with 1% is adjusted to pH7.0, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.02g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 12
The LBKP of dyeing among the embodiment 9 is inserted among the pure water 66mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.02g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Embodiment 13
The LBKP of dyeing among the embodiment 9 is inserted among the pure water 40mL, and the sulfuric acid with 1% is adjusted to pH2.5, and warming while stirring rises to 60 ℃ with fluid temperature.To wherein adding ammonium peroxydisulfate 0.02g.The LBKP that handled 5 hours is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Comparative example 1
LBKP for dyeing in embodiment 1 handles without organic peroxide or inorganic peroxy acid compound, obtains the paper that is untreated but directly copy paper.The measured value of colour examining fluorescence intensity is as shown in table 1.
Comparative example 2
LBKP for dyeing in embodiment 7 handles without organic peroxide or inorganic peroxy acid compound, obtains the paper that is untreated but directly copy paper.The measured value of colour examining fluorescence intensity is as shown in table 1.
Comparative example 3
LBKP for dyeing in embodiment 9 handles without organic peroxide or inorganic peroxy acid compound, obtains the paper that is untreated but directly copy paper.The measured value of colour examining fluorescence intensity is as shown in table 1.
Comparative example 4
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, be adjusted to pH2.5 with sulfuric acid, warming while stirring rises to 50 ℃ with fluid temperature.With 6 hours to wherein dripping 30% aqueous hydrogen peroxide solution 30mL.LBKP after handling is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Comparative example 5
The LBKP of dyeing among the embodiment 1 is inserted among the pure water 100mL, be adjusted to pH11.0 with sodium carbonate, warming while stirring rises to 50 ℃ with fluid temperature.With 5 hours to wherein dripping 1.2% clorox 8mL.LBKP after handling is filtered, copy the circle that paper is diameter 16cm then.The measured value of colour examining fluorescence intensity is as shown in table 1.
Table 1
| The L value | The a value | The b value | Fluorescence intensity | |
| Embodiment 1 embodiment 2 embodiment 3 embodiment 4 embodiment 5 embodiment 6 embodiment 7 embodiment 8 embodiment 9 embodiment 10 embodiment 11 embodiment 12 embodiment, 13 comparative examples 1 (paper is untreated) comparative examples 2 (paper is untreated) comparative examples 3 (paper is untreated) comparative examples 4 comparative examples 5 | 92.99 95.18 95.04 94.92 94.84 95.19 94.95 94.95 94.63 94.95 94.33 94.86 95.20 95.97 95.54 95.12 95.80 93.10 | -0.30 -0.36 -0.66 -0.46 -0.33 -0.34 -0.49 -0.47 -0.88 -0.61 -0.52 -0.68 -0.50 2.82 1.48 0.36 3.02 0.79 | 3.02 1.85 2.80 1.48 1.48 1.46 1.89 1.95 3.27 2.22 2.60 2.00 1.83 -7.52 -3.51 -0.51 -7.68 -1.51 | 0.45 0.67 0.44 0.40 0.54 0.72 0.39 0.48 0.32 0.35 0.40 0.41 0.40 17.32 9.30 5.07 13.22 4.13 |
From the result of table 1 obviously as can be seen, any of embodiment 1～13 compared fluorescence intensity with the paper that is untreated (comparative example 1,2,3) and significantly reduced, and obtained the value with the magma equal extent.In addition, fluorescence intensity is that the method for use clorox of the method for only using aqueous hydrogen peroxide solution of comparative example 4 or comparative example 5 is low than previous methods also, therefore eliminates substantially by the fluorescence of processing method waste paper of the present invention.
Claims (7)
1. waste paper regenerated processing method, described waste paper contains fluorescent dye, the method is characterized in that, handles waste paper in the presence of organic peroxide or inorganic peroxy acid.
2. waste paper regenerated processing method according to claim 1 is characterized in that, processing is to carry out in any operation of disintegration, sorting, deinking, dedusting, washing or bleaching at waste paper.
3. waste paper regenerated processing method according to claim 1 and 2 is characterized in that, organic peroxide is the peroxide of benzoic peroxide or benzoic acid derivative.
4. waste paper regenerated processing method according to claim 1 and 2 is characterized in that, the inorganic peroxy acid compound is ammonium peroxydisulfate, sodium persulfate or potassium persulfate.
5. waste paper regenerated processing method according to claim 3 is characterized in that, the use amount of the peroxide of benzoic peroxide or benzoic acid derivative is 0.5 weight % to 30 weight % with respect to old paper stock.
6. waste paper regenerated processing method according to claim 4 is characterized in that, the use amount of ammonium peroxydisulfate, sodium persulfate or potassium persulfate is 0.9 weight % to 50 weight % with respect to old paper stock.
7. recycled writing paper wherein is mixed with the regenerated paper pulp that 5 weight % to 95 weight % each described waste paper regenerated processing method by claim 1～6 obtains.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2006276477 | 2006-10-10 | ||
| JP2006276477 | 2006-10-10 |
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| CN101161926A true CN101161926A (en) | 2008-04-16 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068964A (en) * | 2010-11-23 | 2011-05-25 | 沈阳化工大学 | Newspaper pulp solid adsorbent and preparation method thereof |
| CN102151553A (en) * | 2011-03-28 | 2011-08-17 | 沈阳化工大学 | Method for treating printing and dyeing waste water by taking waste newspaper as adsorbent |
| CN102230291A (en) * | 2011-06-16 | 2011-11-02 | 黑龙江省造纸研究所有限公司 | Method for removing fluorescent substance in waste paper pulp |
| CN103132358A (en) * | 2013-03-14 | 2013-06-05 | 福建益源废物利用股份有限公司 | Treatment process of waste paper containing fluorescent dye |
| CN104066884A (en) * | 2011-12-28 | 2014-09-24 | 纳尔科公司 | Process for reducing fluorescence in pulp |
| CN105648841A (en) * | 2016-03-06 | 2016-06-08 | 耿云花 | Harmless treatment technology for indoor wallpaper for construction |
| CN114318924A (en) * | 2021-12-28 | 2022-04-12 | 山东龙德复合材料科技股份有限公司 | Method for high-value utilization of solidified filter paper waste paper |
-
2007
- 2007-10-10 CN CNA2007101801223A patent/CN101161926A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068964A (en) * | 2010-11-23 | 2011-05-25 | 沈阳化工大学 | Newspaper pulp solid adsorbent and preparation method thereof |
| CN102068964B (en) * | 2010-11-23 | 2013-04-03 | 沈阳化工大学 | Newspaper pulp solid adsorbent and preparation method thereof |
| CN102151553A (en) * | 2011-03-28 | 2011-08-17 | 沈阳化工大学 | Method for treating printing and dyeing waste water by taking waste newspaper as adsorbent |
| CN102151553B (en) * | 2011-03-28 | 2012-11-14 | 沈阳化工大学 | Method for treating printing and dyeing waste water by taking waste newspaper as adsorbent |
| CN102230291A (en) * | 2011-06-16 | 2011-11-02 | 黑龙江省造纸研究所有限公司 | Method for removing fluorescent substance in waste paper pulp |
| CN104066884A (en) * | 2011-12-28 | 2014-09-24 | 纳尔科公司 | Process for reducing fluorescence in pulp |
| CN104066884B (en) * | 2011-12-28 | 2016-06-29 | 纳尔科公司 | The method of the fluorescence in reduction paper pulp |
| CN103132358A (en) * | 2013-03-14 | 2013-06-05 | 福建益源废物利用股份有限公司 | Treatment process of waste paper containing fluorescent dye |
| CN105648841A (en) * | 2016-03-06 | 2016-06-08 | 耿云花 | Harmless treatment technology for indoor wallpaper for construction |
| CN114318924A (en) * | 2021-12-28 | 2022-04-12 | 山东龙德复合材料科技股份有限公司 | Method for high-value utilization of solidified filter paper waste paper |
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Application publication date: 20080416 |