CN104710038A - Method for coagulation decoloration of dyeing waste water with cellulose flocculant - Google Patents
Method for coagulation decoloration of dyeing waste water with cellulose flocculant Download PDFInfo
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- CN104710038A CN104710038A CN201510115930.6A CN201510115930A CN104710038A CN 104710038 A CN104710038 A CN 104710038A CN 201510115930 A CN201510115930 A CN 201510115930A CN 104710038 A CN104710038 A CN 104710038A
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Abstract
The invention provides a method for coagulation decoloration of dyeing waste water with a cellulose flocculant. The method is characterized by comprising the steps of introducing the dyeing waste water into a waste water storage tank, carrying out destabilization pretreatment via polyaluminium sulfate, then adding the cellulose flocculant and a certain amount of coagulant aid for stirring, standing and settling, and finally obtaining relatively clear supernate and flocculent precipitate, wherein the supernate can be considered to be recycled for a dyeing working section or subjected to further biochemical treatment. The technical process is simple, efficient and environment-friendly, the treatment cost is lower, and the method is particularly applicable to a flocculation decoloration process of the dyeing waste water. The method directly carries out flocculation decoloration treatment on the pre-filtered dyeing waste water with the cellulose flocculant, simplifies a decoloration treatment technology of the dyeing waste water, further improves purification efficiency of the dyeing waste water, is expected to achieve partial recycling of the dyeing waste water to reduce clear water consumption during production and reduce a pollution load of the discharged waste water, and has important production and environmental protection significance.
Description
Technical field
The present invention relates to a kind of method of coagulation decoloration dyeing waste water, particularly a kind of method utilizing cellulose base flocculation agent coagulation decoloration dyeing waste water, belongs to textile process technical field.
Background technology
Textile industry is the mainstay industry of Chinese national economy, and while textile industry brings tremendous economic and social benefit to China, its potential environmental impact issues also can not be ignored, urgently to be resolved hurrily.The dyeing that textile industry relates to, arrangement workshop section can produce a large amount of dyeing waste water, this type of waste water contains the compositions such as slurry, dyestuff, soda acid, auxiliary agent, inorganic salt, finish, sand class material and fiber impurity, have that water production rate is large, composition is complicated, organic pollutant content is large, colourity high, belong to one of more unmanageable trade effluent.Therefore, the efficient process of dyeing waste water, cyclically utilizing technology, become the research and development focus in textile industry Environmental capacity field.
Coagulation, as one of the important means of wastewater treatment process solid-liquid separation, is a kind of economy, the easy water treatment mode that improve waste water treatment efficiency at present both at home and abroad.Wherein, flocculation agent choose reasonable and proper use of be the most key link of coagulating treatment.Due to dyeing waste water complicated component, there is the problems such as treatment process difficulty is comparatively large, technique is more complicated, therefore, find a kind for the treatment of method of printing and dying wastewater that is easy, efficient and environmental protection and have important practical significance.
In techniques of Dyeing Wastewater Treatment field, dyeing waste water is first introduced pulse anaerobic reactor and is carried out anaerobic treatment by Chinese patent (ZL 201010299329.4) " a kind for the treatment of method of printing and dying wastewater ", anaerobic treatment water outlet enters biological contact oxidation pond, the water outlet gravity flow of biological contact oxidation pond enters second pond and carries out solid-liquid separation, and secondary clarifier effluent penetration depth treatment system carries out that advanced treatment finally obtains can the middle water of reuse; Chinese patent (ZL 201410291722.7) " printing-dyeing waste water treatment process " adds flocculating aids in waste water, filters, filtered out by suspended substance wherein after sewage flocculation, remaining containing coloured fine suspension and solute.In the waste water after single filter, add reductibility discoloring agent, process direct dyeing waste water, make the dye molecule in waste water form deoxidization, degradation product.By the waste water containing deoxidization, degradation product by adsorptive, water-insoluble organic solvent is poured in the waste water after absorption, together shake, when two-phase laminated flow, just in colourless in aqueous phase; Chinese patent (ZL 201310475325.0) " dyeing waste water removal system " describes a kind of wastewater treatment equipment: dyeing waste water removes system by the oxygen canister be connected successively, ozonizer, reactor and absorption bottle composition, the organism that in the water outlet of dyeing waste water final deposition pool, relative content is higher is methyl phenyl ketone, trichloromethane, 2-chloro-2-methyl pentane, wherein methyl phenyl ketone accounts for 24.5% of the total organic pollutant of water outlet, the clearance of methyl phenyl ketone obviously increases, ozone-active carbon synergy increases, and COD clearance is up to 83.8%; United States Patent (USP) (US 20081156005) " Preparation Method of Titanium Dioxide Sol for Catalyzing the Dye Decolouration " relates to TiO 2 sol and photocatalyst activity preparation method, and they are in dye decolored application: adopt titanic acid ester, alcoholic solvent, water and catalyst preparing TiO 2 sol, and add additive by this solution, as hydrogen peroxide, iron, copper, chlorine, bromine etc.TiO 2 sol to decolour reactive dyestuffs, substantive dyestuff, matching stain, cationic dyestuff etc. effectively as catalyzer.So far, in treatment of dyeing wastewater field, yet there are no and utilize the related process technologies of cellulose base flocculation agent coagulation decoloration dyeing waste water to occur.
Pre-filtering dyeing waste water is directly carried out coagulation decoloration process by the present invention, simplifies waste water treatment process, improves purification of waste water efficiency, is expected to realize the reuse of dyeing waste water component loops, reduces the clear water consumption of production process.The textile waste that simultaneously recycling textile industry produces, extracts wherein Mierocrystalline cellulose and prepares cellulose base flocculation agent as basic framework, be applied to the flocculation decoloration process of dyeing waste water, have important production and environment protection significance.
Summary of the invention
In order to overcome, traditional dyeing and finishing waste water treatment process is complicated, equipment requirements is high, the high deficiency of processing cost, recycling textile waste simultaneously, prepare high added value, eco-friendly cellulose base flocculation agent be applied to the coagulation decoloration process of dyeing waste water, the object of this invention is to provide a kind of method utilizing cellulose base flocculation agent coagulation decoloration dyeing waste water.
For achieving the above object, technical scheme of the present invention adopts following steps:
1) dyeing waste water is filtered through 80 order slanted screens, slanted screen setting angle 35 degree, obtain the pre-filtering waste water that solid substance particle diameter is less than or equal to 0.18 mm;
2) drop into 1-2.5 mg/L polyaluminium sulfate, rapid stirring 1-4 min in the pre-filtering waste water obtained to step 1), sedimentation 5-8 min after stirring, carries out solid-liquid separation and gets supernatant liquid, is de-steady precipitation process water outlet;
3) to step 2) drop into 250-600 mg/L cellulose base flocculation agent and 35-50 mL/L 3% AlCl in the de-steady precipitation process water outlet that obtains
3solution, 250 rpm rapid stirring 6-10 min, reduce stirring velocity to 60 rpm, adding 0.1 mol/L dilution heat of sulfuric acid adjustment pH value of solution is 4-6, continue slowly to stir 8-10 min, stop stirring and leave standstill 25 min, carry out solid-liquid separation and get supernatant liquid, be the water outlet of cellulose base flocculation agent coagulation decoloration.
Described dyeing waste water is the one in desized wastewater, dyeing waste-water, finishing process waste water.
Described cellulose base flocculation agent is by taking Mierocrystalline cellulose as basic framework, after free radical causes graft acrylamide monomer method obtained by.
In described cellulose base flocculation agent, cellulose origin is the one in flax refuse yarn, linters, cotton scrap stock, burlap tankage.
Compared with background technology, the beneficial effect that the present invention has is:
The present invention has broken traditional dyeing and finishing waste water treatment process complexity, high in cost of production shortcoming, utilize a kind of novel cellulose base flocculation agent coagulation decoloration pre-filtering dyeing waste water, technological process is simple, efficient, cost is lower, treatment effect is obvious, the textile waste that simultaneously recycling textile industry produces, has dual economic and social benefit.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
embodiment 1:
1) desized wastewater is filtered through 80 order slanted screens, slanted screen setting angle 35 degree, obtain the pre-filtering waste water that solid substance particle diameter is less than or equal to 0.18 mm;
2) drop into 1 mg/L polyaluminium sulfate, rapid stirring 4 min in the pre-filtering waste water obtained to step 1), sedimentation 8 min after stirring, carries out solid-liquid separation and gets supernatant liquid, is de-steady precipitation process water outlet;
3) to step 2) drop into 600 mg/L flax refuse yarn cellulose base flocculation agents and 50 mL/L 3% AlCl in the de-steady precipitation process water outlet that obtains
3solution, 250 rpm rapid stirring 6 min, reduce stirring velocity to 60 rpm, adding 0.1 mol/L dilution heat of sulfuric acid adjustment pH value of solution is 4, continue slowly to stir 8 min, stop stirring and leave standstill 25 min, carry out solid-liquid separation and get supernatant liquid, be flax refuse yarn cellulose base flocculation agent coagulation decoloration water outlet (a).
embodiment 2:
1) desized wastewater is filtered through 80 order slanted screens, slanted screen setting angle 35 degree, obtain the pre-filtering waste water that solid substance particle diameter is less than or equal to 0.18 mm;
2) drop into 1.5 mg/L polyaluminium sulfates, rapid stirring 3 min in the pre-filtering waste water obtained to step 1), stir sedimentation 7 min, carries out solid-liquid separation and get supernatant liquid, is de-steady precipitation process water outlet;
3) to step 2) drop into 500 mg/L cotton linters cellulose base flocculation agents and 45 mL/L 3% AlCl in the de-steady precipitation process water outlet that obtains
3solution, 250 rpm rapid stirring 7 min, reduce stirring velocity to 60 rpm, adding 0.1 mol/L dilution heat of sulfuric acid adjustment pH value of solution is 4, continue slowly to stir 9 min, stop stirring and leave standstill 25 min, carry out solid-liquid separation and get supernatant liquid, be cotton linters cellulose base flocculation agent coagulation decoloration water outlet (b).
embodiment 3:
1) dyeing waste-water is filtered through 80 order slanted screens, slanted screen setting angle 35 degree, obtain the pre-filtering waste water that solid substance particle diameter is less than or equal to 0.18 mm;
2) drop into 2 mg/L polyaluminium sulfates, rapid stirring 2 min in the pre-filtering waste water obtained to step 1), stir sedimentation 6 min, carries out solid-liquid separation and get supernatant liquid, is de-steady precipitation process water outlet;
3) to step 2) drop into 400 mg/L cotton scrap stock cellulose base flocculation agents and 40 mL/L 3% AlCl in the de-steady precipitation process water outlet that obtains
3solution, 250 rpm rapid stirring 9 min, reduce stirring velocity to 60 rpm, adding 0.1 mol/L dilution heat of sulfuric acid adjustment pH value of solution is 5, continue slowly to stir 9 min, stop stirring and leave standstill 25 min, carry out solid-liquid separation and get supernatant liquid, be cotton scrap stock cellulose base flocculation agent coagulation decoloration water outlet (c).
embodiment 4:
1) dyeing waste-water is filtered through 80 order slanted screens, slanted screen setting angle 35 degree, obtain the pre-filtering waste water that solid substance particle diameter is less than or equal to 0.18 mm;
2) drop into 2.5 mg/L polyaluminium sulfates, rapid stirring 1 min in the pre-filtering waste water obtained to step 1), stir sedimentation 5 min, carries out solid-liquid separation and get supernatant liquid, is de-steady precipitation process water outlet;
3) to step 2) drop into 250 mg/L burlap tankage cellulose base flocculation agents and 35 mL/L 3% AlCl in the de-steady precipitation process water outlet that obtains
3solution, 250 rpm rapid stirring 10 min, reduce stirring velocity to 60 rpm, adding 0.1 mol/L dilution heat of sulfuric acid adjustment pH value of solution is 6, continue slowly to stir 10 min, stop stirring and leave standstill 25 min, carry out solid-liquid separation and get supernatant liquid, be burlap tankage cellulose base flocculation agent coagulation decoloration water outlet (d).
Mensuration embodiment 1,2,3,4 utilizes the effluent color dilution after cellulose base flocculation agent coagulation decoloration dyeing waste water and COD
cr, be applied to the coagulation decoloration process of dyeing waste water simultaneously.Table 1 is the actual effect that embodiment 1,2,3,4 utilizes cellulose base flocculation agent coagulation decoloration dyeing waste water.From table 1 data, turbidity and the chroma removal rate of the water outlet (a) and (b) adopting cellulose base flocculation agent coagulation decoloration of the present invention to obtain, (c), (d) are all higher, respectively at 92.4-98.1% and 90.6-93.7%; COD
crclearance, at 53.5-60.5%, illustrates that this cellulose base flocculation agent coagulation decoloration process has dyeing waste water and preferably removes suspended substance and decolorizing effect.
Table 1
What more than enumerate is only specific embodiments of the invention.The invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (4)
1. utilize a method for cellulose base flocculation agent coagulation decoloration dyeing waste water, it is characterized in that, comprise the following steps:
1) dyeing waste water is filtered through 80 order slanted screens, slanted screen setting angle 35 degree, obtain the pre-filtering waste water that solid substance particle diameter is less than or equal to 0.18 mm;
2) drop into 1-2.5 mg/L polyaluminium sulfate, rapid stirring 1-4 min in the pre-filtering waste water obtained to step 1), sedimentation 5-8 min after stirring, carries out solid-liquid separation and gets supernatant liquid, is de-steady precipitation process water outlet;
3) to step 2) drop into 250-600 mg/L cellulose base flocculation agent and 35-50 mL/L 3% AlCl in the de-steady precipitation process water outlet that obtains
3solution, 250 rpm rapid stirring 6-10 min, reduce stirring velocity to 60 rpm, adding 0.1 mol/L dilution heat of sulfuric acid adjustment pH value of solution is 4-6, continue slowly to stir 8-10 min, stop stirring and leave standstill 25 min, carry out solid-liquid separation and get supernatant liquid, be the water outlet of cellulose base flocculation agent coagulation decoloration.
2. a kind of method utilizing cellulose base flocculation agent coagulation decoloration dyeing waste water according to claim 1, is characterized in that: described dyeing waste water is the one in desized wastewater, dyeing waste-water, finishing process waste water.
3. a kind of method utilizing cellulose base flocculation agent coagulation decoloration dyeing waste water according to claim 1, it is characterized in that: described cellulose base flocculation agent is by taking Mierocrystalline cellulose as basic framework, after free radical causes graft acrylamide monomer method obtained by.
4. a kind of method utilizing cellulose base flocculation agent coagulation decoloration dyeing waste water according to claim 1, is characterized in that: in described cellulose base flocculation agent, cellulose origin is the one in flax refuse yarn, linters, cotton scrap stock, burlap tankage.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060443A (en) * | 2015-07-13 | 2015-11-18 | 浙江理工大学 | Method for performing coagulation treatment on surfactant production wastewater by adopting cellulose-based flocculant |
| CN105366786A (en) * | 2015-12-23 | 2016-03-02 | 杭州万事利丝绸科技有限公司 | Silk printing and dyeing wastewater treatment process based on cellulose flocculant |
| CN105502761A (en) * | 2015-12-31 | 2016-04-20 | 天津晶丽数码科技有限公司 | Wastewater treatment technology and device for guide belt type digital printing machine |
| CN106219821A (en) * | 2016-08-30 | 2016-12-14 | 嘉兴赛维环保科技有限公司 | One utilizes cellulose base integrated Fenton catalyst Fe3+c2o4the method of/R advanced treatment of dyeing wastewater |
| CN106430690A (en) * | 2015-08-13 | 2017-02-22 | 陆志鸿 | Treatment and recycling process for acrylic acid fabric slurry desizing wastewater |
| CN106467335A (en) * | 2015-08-17 | 2017-03-01 | 浙江理工大学 | A kind of method of utilization cellulose base green flocculation material coagulating treatment ultrasound wave pulp-making waste-water |
| CN107164425A (en) * | 2017-04-06 | 2017-09-15 | 浙江理工大学 | A kind of preparation method of flocculation decoloration dyeing waste water bacteria cellulose based composites |
| CN107522352A (en) * | 2017-07-27 | 2017-12-29 | 江苏新瑞贝科技股份有限公司 | A kind of processing method of rice paper sewage |
| CN108751527A (en) * | 2018-08-22 | 2018-11-06 | 杭州开源环保工程有限公司 | A kind of combined type high-recovery processing system |
| CN111036168A (en) * | 2019-12-05 | 2020-04-21 | 浙江理工大学 | Method for efficiently removing antimony ions in printing and dyeing wastewater by using modified hydroxyapatite |
| WO2021188082A1 (en) * | 2020-03-16 | 2021-09-23 | T.C Erci̇yes Üni̇versi̇tesi̇ | Use of air conditioner dust of spinning mill producing cellulosic yarn for decolorization of textile wastewaters containing cationic dye |
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| CN101125699A (en) * | 2007-09-04 | 2008-02-20 | 南开大学 | Method for preparing ecological safety type composite flocculant |
| CN103991982A (en) * | 2014-05-26 | 2014-08-20 | 浙江理工大学 | Method for performing coagulation treatment on waste paper pulping comprehensive papermaking wastewater by utilizing cellulose-based flocculating agent |
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2015
- 2015-03-17 CN CN201510115930.6A patent/CN104710038B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125699A (en) * | 2007-09-04 | 2008-02-20 | 南开大学 | Method for preparing ecological safety type composite flocculant |
| CN103991982A (en) * | 2014-05-26 | 2014-08-20 | 浙江理工大学 | Method for performing coagulation treatment on waste paper pulping comprehensive papermaking wastewater by utilizing cellulose-based flocculating agent |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060443A (en) * | 2015-07-13 | 2015-11-18 | 浙江理工大学 | Method for performing coagulation treatment on surfactant production wastewater by adopting cellulose-based flocculant |
| CN106430690A (en) * | 2015-08-13 | 2017-02-22 | 陆志鸿 | Treatment and recycling process for acrylic acid fabric slurry desizing wastewater |
| CN106430690B (en) * | 2015-08-13 | 2019-03-05 | 杭州臻世环境科技有限公司 | Fabric slurry is the desized wastewater treatment for reuse technique of acrylic compounds |
| CN106467335A (en) * | 2015-08-17 | 2017-03-01 | 浙江理工大学 | A kind of method of utilization cellulose base green flocculation material coagulating treatment ultrasound wave pulp-making waste-water |
| CN105366786A (en) * | 2015-12-23 | 2016-03-02 | 杭州万事利丝绸科技有限公司 | Silk printing and dyeing wastewater treatment process based on cellulose flocculant |
| CN105502761B (en) * | 2015-12-31 | 2018-05-18 | 天津晶丽数码科技有限公司 | A kind of guide belt digital printing machine waste water treatment process and device |
| CN105502761A (en) * | 2015-12-31 | 2016-04-20 | 天津晶丽数码科技有限公司 | Wastewater treatment technology and device for guide belt type digital printing machine |
| CN106219821A (en) * | 2016-08-30 | 2016-12-14 | 嘉兴赛维环保科技有限公司 | One utilizes cellulose base integrated Fenton catalyst Fe3+c2o4the method of/R advanced treatment of dyeing wastewater |
| CN107164425A (en) * | 2017-04-06 | 2017-09-15 | 浙江理工大学 | A kind of preparation method of flocculation decoloration dyeing waste water bacteria cellulose based composites |
| CN107522352A (en) * | 2017-07-27 | 2017-12-29 | 江苏新瑞贝科技股份有限公司 | A kind of processing method of rice paper sewage |
| CN108751527A (en) * | 2018-08-22 | 2018-11-06 | 杭州开源环保工程有限公司 | A kind of combined type high-recovery processing system |
| CN111036168A (en) * | 2019-12-05 | 2020-04-21 | 浙江理工大学 | Method for efficiently removing antimony ions in printing and dyeing wastewater by using modified hydroxyapatite |
| WO2021188082A1 (en) * | 2020-03-16 | 2021-09-23 | T.C Erci̇yes Üni̇versi̇tesi̇ | Use of air conditioner dust of spinning mill producing cellulosic yarn for decolorization of textile wastewaters containing cationic dye |
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