CN105148854A - Preparation method of mesoporous silica solidified laccase printing and dyeing wastewater decolorizer - Google Patents
Preparation method of mesoporous silica solidified laccase printing and dyeing wastewater decolorizer Download PDFInfo
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- CN105148854A CN105148854A CN201510675703.9A CN201510675703A CN105148854A CN 105148854 A CN105148854 A CN 105148854A CN 201510675703 A CN201510675703 A CN 201510675703A CN 105148854 A CN105148854 A CN 105148854A
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- laccase
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a preparation method of a mesoporous silica solidified laccase printing and dyeing wastewater decolorizer, and belongs to the field of wastewater decolorizing. The preparation method is used for solving the problems that the present combined inorganic decolorizer is not stable enough and is desorbed after the decolorizer is placed for a long time. The preparation method comprises the following steps: dissolving nanometer silica in 25% ammonium hydroxide, cetane trimethyl ammonium bromide and glycol; causing the silica solution to react with concentrated hydrochloric acid and absolute ethyl alcohol, thereby preparing nanometer mesoporous silica; presolidifying the laccase by shaking the laccase powder and the mesoporous silica grains through a shaker under ultrasonic assistance; and lastly, solidifying the presolidified mesoporous silica and the laccase fixing solution under the condition of magnetically stirring. The color removal rate of the printing and dyeing wastewater decolorizer solidifying laccase by utilizing mesoporous silica can reach 65-70%, the decolorizer is never desorbed after repeated use, and the compounded inorganic matter is used for preparing the decolorizer so that environmental protection and zero secondary pollution are ensured.
Description
Technical field
The present invention relates to a kind of preparation method utilizing mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water, belong to waste water decoloring field.
Background technology
In recent years, the raising along with people's living standard and the pursuit to U.S., the seed output and quality of textile has large
The raising of amplitude, because processing variety and output often change, causes the larger change of the water temperature water yield.The development of chemical & blended fabric and the progress of printing technology, color degree of dyeing waste water is high, strong toxicity, the water yield are large, biodegradability is poor, thus makes its improvement more and more difficult, and the pollution of dyeing waste water to environment is also more and more serious.The main cause causing water body coloured is dyestuff.The dyestuff year total growth of the current whole world is more than 600,000 tons, and wherein more than 50% for textile dyeing, and in textile processing, has the dyestuff of 10% ~ 20% to discharge as refuse.Azo dyes in dyeing waste water can make biological teratogenesis, carcinogenic, mutagenesis.
In recent years, decolorizing printing and dyeing waste water research is very active, can be divided into two large classes, i.e. biochemical process and physico-chemical process according to processing method difference.Physico-chemical process comprises absorption, coagulation, neutralization etc., and biochemical process comprises activated sludge process, biological rotating disk etc.Effect then has synthesizing inorganic decolorizer preferably, and the composite oxides containing silica can be used for dye wastewater treatment, and have hot recycling.Adopt Mg(OH)
2adsorption treatment anionic dye waste water shows excellent decolorizing effect, but Mg(OH)
2after absorption, standing time is unsuitable long, otherwise desorb may occur affects decolorizing effect.So need a kind of decolorizing effect remarkable, it is necessary that reused decolorizer is resolved in stable not easily generation.
Summary of the invention
The technical problem that the present invention mainly solves: in decolorizing printing and dyeing waste water process, the synthesizing inorganic decolorizer used is stable not, standing time the long problem causing desorb, provide a kind of nano silicon and cetane trimethyl ammonium bromide reacts, repeatedly mix backflow through concentrated hydrochloric acid and absolute ethyl alcohol simultaneously, prepare meso-porous nano silica dioxide granule, under shaking table vibration and the effect of ultrasonic internal auxiliary oscillating, make laccase powder in the preliminary load of mesoporous nano silicon dioxide, simultaneously by magnetic agitation mesoporous silicon oxide and laccase fixer, make the firm load of laccase, improve synthesizing inorganic decolorizer stability and decolorizing effect.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention:
(1) by mass percentage, the mass fraction choosing 2 ~ 8% be 25% ammoniacal liquor, 11.7 ~ 15.5% ethylene glycol, the cetane trimethyl ammonium bromide of 0.3 ~ 0.5%, the deionized water of 40 ~ 41% and 40 ~ 41% nano silicon, at 45 ~ 50 DEG C of temperature, be uniformly mixed after material is fully dissolved, 55 ~ 60 DEG C are warming up to it, stirring reaction 2 ~ 3h under 600 ~ 800r/min, is prepared into nano silicon mixed liquor;
(2) count by weight, choose 5 ~ 15 portions of nano silicon mixed liquors, 10 ~ 15 parts of mass fractions are the concentrated hydrochloric acid of 98% and the absolute ethyl alcohol of 75 ~ 80 parts, be uniformly mixed and the 2 ~ 4h that refluxes at 80 ~ 90 DEG C, after stopping heating naturally cooling to room temperature subsequently, be placed on centrifugation 10 ~ 15min in the centrifuge of 12000 ~ 13000r/min, get lower sediment also with after absolute ethanol washing 3 ~ 5 times, be placed on dry 2 ~ 3h in 60 ~ 65 DEG C of baking ovens and can be prepared into meso-porous nano silica dioxide granule, for subsequent use;
(3) by mass fraction, take the sodium dihydrogen phosphate of 2 ~ 8 parts, the sodium hydrogen phosphate of 7 ~ 9 parts and 85 ~ 89 parts of deionized waters, being uniformly mixed at 20 ~ 30 DEG C makes it dissolve, pH to 7.0 is regulated subsequently with the citric acid solution that the sodium hydroxide solution of 0.3mol/L and mass fraction are 20%, be prepared into phosphate buffer, for subsequent use;
(4) meso-porous nano silica dioxide granule prepared by laccase powder and step (2) is placed in a dry beaker by 1:100 in mass ratio, be placed in vibration shaking table simultaneously, slowly to vibrate 3 ~ 5h with the amplitude of 20mm, simultaneously in vibration simultaneously, 200 ~ 300W ultrasonic wave added intermittent oscillation is carried out to it, every 15min vibration 2 ~ 3min, till vibration shaking table stops, being prepared into precuring laccase nanometer silicon dioxide particle;
(5) laccase powder and phosphate buffer are uniformly mixed by 1:1000 in mass ratio, be prepared into laccase fixer, 1:100 in mass ratio subsequently, precuring laccase nanometer silicon dioxide particle is prepared into and laccase fixer mixes in proportion by above-mentioned, after 4 ~ 5 DEG C of lower magnetic forces stir 8 ~ 10h, be placed on centrifugal 5 ~ 8min in the centrifuge of 4000 ~ 5000r/min, get lower sediment and natural drying 20 ~ 24h at being placed in 4 DEG C, one can be prepared into and utilize mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water.
Application of the present invention: after dyeing waste water enters second pond, by dyeing waste water 5 ~ 10kg per ton, the mesoporous silicon oxide of preparation solidification laccase decolorizer particle is sprinkled in second pond, and aeration is carried out to it, after 8 ~ 10h, colourity drops to less than 500 degree by 200,000 degree, to after its hot recycling process after absorption, use and desorb does not occur 8 ~ 10 times.
The invention has the beneficial effects as follows:
(1) mesoporous silicon oxide of the present invention solidification laccase decolorizing printing and dyeing waste water agent colourity removal efficiency can reach 65 ~ 70%, and repeatedly can use and also desorb can not occur;
(2) synthesizing inorganic thing is adopted to prepare decolorizer, environmental protection non-secondary pollution.
Detailed description of the invention
By mass percentage, the mass fraction choosing 2 ~ 8% be 25% ammoniacal liquor, 11.7 ~ 15.5% ethylene glycol, the cetane trimethyl ammonium bromide of 0.3 ~ 0.5%, the deionized water of 40 ~ 41% and 40 ~ 41% nano silicon, at 45 ~ 50 DEG C of temperature, be uniformly mixed after material is fully dissolved, 55 ~ 60 DEG C are warming up to it, stirring reaction 2 ~ 3h under 600 ~ 800r/min, is prepared into nano silicon mixed liquor; Count by weight, choose 5 ~ 15 portions of nano silicon mixed liquors, 10 ~ 15 parts of mass fractions are the concentrated hydrochloric acid of 98% and the absolute ethyl alcohol of 75 ~ 80 parts, be uniformly mixed and the 2 ~ 4h that refluxes at 80 ~ 90 DEG C, after stopping heating naturally cooling to room temperature subsequently, be placed on centrifugation 10 ~ 15min in the centrifuge of 12000 ~ 13000r/min, get lower sediment also with after absolute ethanol washing 3 ~ 5 times, be placed on dry 2 ~ 3h in 60 ~ 65 DEG C of baking ovens and can be prepared into meso-porous nano silica dioxide granule, for subsequent use; By mass fraction, take the sodium dihydrogen phosphate of 2 ~ 8 parts, the sodium hydrogen phosphate of 7 ~ 9 parts and 85 ~ 89 parts of deionized waters, being uniformly mixed at 20 ~ 30 DEG C makes it dissolve, pH to 7.0 is regulated subsequently with the citric acid solution that the sodium hydroxide solution of 0.3mol/L and mass fraction are 20%, be prepared into phosphate buffer, for subsequent use; Laccase powder and meso-porous nano silica dioxide granule are placed in a dry beaker by 1:100 in mass ratio, be placed in vibration shaking table simultaneously, slowly to vibrate 3 ~ 5h with the amplitude of 20mm, simultaneously in vibration simultaneously, 200 ~ 300W ultrasonic wave added intermittent oscillation is carried out to it, every 15min vibration 2 ~ 3min, till vibration shaking table stops, being prepared into precuring laccase nanometer silicon dioxide particle; Laccase powder and phosphate buffer are uniformly mixed by 1:1000 in mass ratio, be prepared into laccase fixer, 1:100 in mass ratio subsequently, precuring laccase nanometer silicon dioxide particle is prepared into and laccase fixer mixes in proportion by above-mentioned, after 4 ~ 5 DEG C of lower magnetic forces stir 8 ~ 10h, be placed on centrifugal 5 ~ 8min in the centrifuge of 4000 ~ 5000r/min, get lower sediment and natural drying 20 ~ 24h at being placed in 4 DEG C, one can be prepared into and utilize mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water.
Example 1
By mass percentage, the mass fraction choosing 2% be 25% ammoniacal liquor, 15.5% ethylene glycol, the cetane trimethyl ammonium bromide of 0.5%, the deionized water of 41% and 41% nano silicon, at 45 DEG C of temperature, be uniformly mixed after material is fully dissolved, 55 DEG C are warming up to it, stirring reaction 2h under 600r/min, is prepared into nano silicon mixed liquor; Count by weight, choose 5 portions of nano silicon mixed liquors, 15 parts of mass fractions are the concentrated hydrochloric acid of 98% and the absolute ethyl alcohol of 80 parts, be uniformly mixed and the 2h that refluxes at 80 DEG C, after stopping heating naturally cooling to room temperature subsequently, be placed on centrifugation 10min in the centrifuge of 12000r/min, get lower sediment and with after absolute ethanol washing 3 times, be placed on dry 2h in 60 DEG C of baking ovens and can be prepared into meso-porous nano silica dioxide granule, for subsequent use; By mass fraction, take the sodium dihydrogen phosphate of 2 parts, the sodium hydrogen phosphate of 9 parts and 89 parts of deionized waters, being uniformly mixed at 20 DEG C makes it dissolve, pH to 7.0 is regulated subsequently with the citric acid solution that the sodium hydroxide solution of 0.3mol/L and mass fraction are 20%, be prepared into phosphate buffer, for subsequent use; Laccase powder and meso-porous nano silica dioxide granule are placed in a dry beaker by 1:100 in mass ratio, be placed in vibration shaking table simultaneously, slowly to vibrate 3h with the amplitude of 20mm, simultaneously in vibration simultaneously, 200W ultrasonic wave added intermittent oscillation is carried out to it, every 15min vibration 2min, till vibration shaking table stops, being prepared into precuring laccase nanometer silicon dioxide particle; Laccase powder and phosphate buffer are uniformly mixed by 1:1000 in mass ratio, be prepared into laccase fixer, 1:100 in mass ratio subsequently, precuring laccase nanometer silicon dioxide particle is prepared into and laccase fixer mixes in proportion by above-mentioned, after 4 DEG C of lower magnetic forces stir 8h, be placed on centrifugal 5min in the centrifuge of 4000r/min, get lower sediment and natural drying 20h at being placed in 4 DEG C, one can be prepared into and utilize mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water.After dyeing waste water enters second pond, by dyeing waste water 5kg per ton, the mesoporous silicon oxide of preparation solidification laccase decolorizer particle is sprinkled in second pond, and aeration is carried out to it, after 8h, colourity drops to 450 degree by 200,000 degree, to after its hot recycling process after absorption, uses and desorb does not occur 8 times.
Example 2
By mass percentage, the mass fraction choosing 5% be 25% ammoniacal liquor, 14.5% ethylene glycol, the cetane trimethyl ammonium bromide of 0.5%, the deionized water of 40% and 40% nano silicon, at 47 DEG C of temperature, be uniformly mixed after material is fully dissolved, 57 DEG C are warming up to it, stirring reaction 2.5h under 700r/min, is prepared into nano silicon mixed liquor; Count by weight, choose 8 portions of nano silicon mixed liquors, 17 parts of mass fractions are the concentrated hydrochloric acid of 98% and the absolute ethyl alcohol of 75 parts, be uniformly mixed and the 3h that refluxes at 85 DEG C, after stopping heating naturally cooling to room temperature subsequently, be placed on centrifugation 13min in the centrifuge of 12500r/min, get lower sediment and with after absolute ethanol washing 4 times, be placed on dry 2.5h in 62 DEG C of baking ovens and can be prepared into meso-porous nano silica dioxide granule, for subsequent use; By mass fraction, take the sodium dihydrogen phosphate of 5 parts, the sodium hydrogen phosphate of 8 parts and 87 parts of deionized waters, being uniformly mixed at 25 DEG C makes it dissolve, pH to 7.0 is regulated subsequently with the citric acid solution that the sodium hydroxide solution of 0.3mol/L and mass fraction are 20%, be prepared into phosphate buffer, for subsequent use; Laccase powder and meso-porous nano silica dioxide granule are placed in a dry beaker by 1:100 in mass ratio, be placed in vibration shaking table simultaneously, slowly to vibrate 4h with the amplitude of 20mm, simultaneously in vibration simultaneously, 250W ultrasonic wave added intermittent oscillation is carried out to it, every 15min vibration 2min, till vibration shaking table stops, being prepared into precuring laccase nanometer silicon dioxide particle; Laccase powder and phosphate buffer are uniformly mixed by 1:1000 in mass ratio, be prepared into laccase fixer, 1:100 in mass ratio subsequently, precuring laccase nanometer silicon dioxide particle is prepared into and laccase fixer mixes in proportion by above-mentioned, after 4 DEG C of lower magnetic forces stir 9h, be placed on centrifugal 6min in the centrifuge of 4500r/min, get lower sediment and natural drying 23h at being placed in 4 DEG C, one can be prepared into and utilize mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water.After dyeing waste water enters second pond, by dyeing waste water 8kg per ton, the mesoporous silicon oxide of preparation solidification laccase decolorizer particle is sprinkled in second pond, and aeration is carried out to it, after 9h, colourity drops to 350 by 200,000 degree, to after its hot recycling process after absorption, uses and desorb does not occur 9 times.
Example 3
By mass percentage, the mass fraction choosing 8% be 25% ammoniacal liquor, 11.7% ethylene glycol, the cetane trimethyl ammonium bromide of 0.3%, the deionized water of 40% and 40% nano silicon, at 50 DEG C of temperature, be uniformly mixed after material is fully dissolved, 60 DEG C are warming up to it, stirring reaction 3h under 800r/min, is prepared into nano silicon mixed liquor; Count by weight, choose 10 portions of nano silicon mixed liquors, 15 parts of mass fractions are the concentrated hydrochloric acid of 98% and the absolute ethyl alcohol of 75 parts, be uniformly mixed and the 4h that refluxes at 90 DEG C, after stopping heating naturally cooling to room temperature subsequently, be placed on centrifugation 15min in the centrifuge of 13000r/min, get lower sediment and with after absolute ethanol washing 5 times, be placed on dry 3h in 65 DEG C of baking ovens and can be prepared into meso-porous nano silica dioxide granule, for subsequent use; By mass fraction, take the sodium dihydrogen phosphate of 8 parts, the sodium hydrogen phosphate of 7 parts and 85 parts of deionized waters, being uniformly mixed at 30 DEG C makes it dissolve, pH to 7.0 is regulated subsequently with the citric acid solution that the sodium hydroxide solution of 0.3mol/L and mass fraction are 20%, be prepared into phosphate buffer, for subsequent use; Meso-porous nano silica dioxide granule prepared by laccase powder and step (2) is placed in a dry beaker by 1:100 in mass ratio, be placed in vibration shaking table simultaneously, slowly to vibrate 5h with the amplitude of 20mm, simultaneously in vibration simultaneously, 300W ultrasonic wave added intermittent oscillation is carried out to it, every 15min vibration 3min, till vibration shaking table stops, being prepared into precuring laccase nanometer silicon dioxide particle; Laccase powder and phosphate buffer are uniformly mixed by 1:1000 in mass ratio, be prepared into laccase fixer, 1:100 in mass ratio subsequently, precuring laccase nanometer silicon dioxide particle is prepared into and laccase fixer mixes in proportion by above-mentioned, after 5 DEG C of lower magnetic forces stir 10h, be placed on centrifugal 8min in the centrifuge of 5000r/min, get lower sediment and natural drying 24h at being placed in 4 DEG C, one can be prepared into and utilize mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water.After dyeing waste water enters second pond, by dyeing waste water 10kg per ton, the mesoporous silicon oxide of preparation solidification laccase decolorizer particle is sprinkled in second pond, and aeration is carried out to it, after 10h, colourity drops to 325 by 200,000 degree, to after its hot recycling process after absorption, uses and desorb does not occur 10 times.
Claims (1)
1. utilize mesoporous silicon oxide to solidify a preparation method for laccase decolorizing printing and dyeing waste water agent, it is characterized in that concrete preparation process is:
(1) by mass percentage, the mass fraction choosing 2 ~ 8% be 25% ammoniacal liquor, 11.7 ~ 15.5% ethylene glycol, the cetane trimethyl ammonium bromide of 0.3 ~ 0.5%, the deionized water of 40 ~ 41% and 40 ~ 41% nano silicon, at 45 ~ 50 DEG C of temperature, be uniformly mixed after material is fully dissolved, 55 ~ 60 DEG C are warming up to it, stirring reaction 2 ~ 3h under 600 ~ 800r/min, is prepared into nano silicon mixed liquor;
(2) count by weight, choose 5 ~ 15 portions of nano silicon mixed liquors, 10 ~ 15 parts of mass fractions are the concentrated hydrochloric acid of 98% and the absolute ethyl alcohol of 75 ~ 80 parts, be uniformly mixed and the 2 ~ 4h that refluxes at 80 ~ 90 DEG C, after stopping heating naturally cooling to room temperature subsequently, be placed on centrifugation 10 ~ 15min in the centrifuge of 12000 ~ 13000r/min, get lower sediment also with after absolute ethanol washing 3 ~ 5 times, be placed on dry 2 ~ 3h in 60 ~ 65 DEG C of baking ovens and can be prepared into meso-porous nano silica dioxide granule, for subsequent use;
(3) by mass fraction, take the sodium dihydrogen phosphate of 2 ~ 8 parts, the sodium hydrogen phosphate of 7 ~ 9 parts and 85 ~ 89 parts of deionized waters, being uniformly mixed at 20 ~ 30 DEG C makes it dissolve, pH to 7.0 is regulated subsequently with the citric acid solution that the sodium hydroxide solution of 0.3mol/L and mass fraction are 20%, be prepared into phosphate buffer, for subsequent use;
(4) meso-porous nano silica dioxide granule prepared by laccase powder and step (2) is placed in a dry beaker by 1:100 in mass ratio, be placed in vibration shaking table simultaneously, slowly to vibrate 3 ~ 5h with the amplitude of 20mm, simultaneously in vibration simultaneously, 200 ~ 300W ultrasonic wave added intermittent oscillation is carried out to it, every 15min vibration 2 ~ 3min, till vibration shaking table stops, being prepared into precuring laccase nanometer silicon dioxide particle;
(5) laccase powder and phosphate buffer are uniformly mixed by 1:1000 in mass ratio, be prepared into laccase fixer, 1:100 in mass ratio subsequently, precuring laccase nanometer silicon dioxide particle is prepared into and laccase fixer mixes in proportion by above-mentioned, after 4 ~ 5 DEG C of lower magnetic forces stir 8 ~ 10h, be placed on centrifugal 5 ~ 8min in the centrifuge of 4000 ~ 5000r/min, get lower sediment and natural drying 20 ~ 24h at being placed in 4 DEG C, one can be prepared into and utilize mesoporous silicon oxide to solidify the agent of laccase decolorizing printing and dyeing waste water.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658251A (en) * | 2018-07-03 | 2018-10-16 | 南京云实环境科技有限公司 | It is a kind of for the inorganic agent of textile waste, preparation method and its treatment process |
| CN108773911A (en) * | 2018-07-03 | 2018-11-09 | 南京云实环境科技有限公司 | It is a kind of for the inorganic agent of refuse leachate, preparation method and its treatment process |
| CN108793430A (en) * | 2018-07-03 | 2018-11-13 | 南京大学 | A kind of slurry paper waste water inorganic agent, preparation method and treatment process |
| CN108862626A (en) * | 2018-07-03 | 2018-11-23 | 南京云实环境科技有限公司 | It is a kind of for the inorganic agent of finished paper waste water, preparation method and its treatment process |
| CN108862845A (en) * | 2018-07-03 | 2018-11-23 | 南京云实环境科技有限公司 | A kind for the treatment of of dyeing/printing wastewaters, preparation method and its treatment process |
| CN109652389A (en) * | 2019-02-18 | 2019-04-19 | 福州大学 | Utilize the method for laccase treatment dyeing waste water |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108658251A (en) * | 2018-07-03 | 2018-10-16 | 南京云实环境科技有限公司 | It is a kind of for the inorganic agent of textile waste, preparation method and its treatment process |
| CN108773911A (en) * | 2018-07-03 | 2018-11-09 | 南京云实环境科技有限公司 | It is a kind of for the inorganic agent of refuse leachate, preparation method and its treatment process |
| CN108793430A (en) * | 2018-07-03 | 2018-11-13 | 南京大学 | A kind of slurry paper waste water inorganic agent, preparation method and treatment process |
| CN108862626A (en) * | 2018-07-03 | 2018-11-23 | 南京云实环境科技有限公司 | It is a kind of for the inorganic agent of finished paper waste water, preparation method and its treatment process |
| CN108862845A (en) * | 2018-07-03 | 2018-11-23 | 南京云实环境科技有限公司 | A kind for the treatment of of dyeing/printing wastewaters, preparation method and its treatment process |
| CN108793430B (en) * | 2018-07-03 | 2021-07-06 | 南京大学 | Treating agent for pulp paper wastewater, and preparation method and treatment process thereof |
| CN108658251B (en) * | 2018-07-03 | 2021-11-16 | 南京乐透思环保科技有限公司 | Treating agent for textile wastewater, preparation method and treatment process thereof |
| CN108862626B (en) * | 2018-07-03 | 2022-02-15 | 南京乐透思环保科技有限公司 | Treating agent for finished paper wastewater, preparation method and treatment process thereof |
| CN108862845B (en) * | 2018-07-03 | 2022-02-22 | 南京乐透思环保科技有限公司 | Printing and dyeing wastewater treating agent, preparation method and treatment process thereof |
| CN108773911B (en) * | 2018-07-03 | 2022-05-24 | 南京乐透思环保科技有限公司 | Treating agent for garbage penetrating fluid, preparation method and treatment process thereof |
| CN109652389A (en) * | 2019-02-18 | 2019-04-19 | 福州大学 | Utilize the method for laccase treatment dyeing waste water |
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