CN105906008A - Composite flocculant for processing printing and dyeing wastewater of wool fabric and preparation method of composite flocculant - Google Patents
Composite flocculant for processing printing and dyeing wastewater of wool fabric and preparation method of composite flocculant Download PDFInfo
- Publication number
- CN105906008A CN105906008A CN201610333085.4A CN201610333085A CN105906008A CN 105906008 A CN105906008 A CN 105906008A CN 201610333085 A CN201610333085 A CN 201610333085A CN 105906008 A CN105906008 A CN 105906008A
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- China
- Prior art keywords
- wool fabric
- waste water
- dyeing waste
- flocculation agent
- flocculant
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a composite flocculant for processing printing and dyeing wastewater of wool fabric and a preparation method of the composite flocculant. The flocculant comprises polyaluminum ferric chloride, polyaluminum chloride, nonionic polyacrylamide and sodium silicate. The multivariate composite flocculant has integrated advantages of an inorganic flocculant and an organic flocculant through proper selection of components and ratio, has relatively high electrical neutralization adsorption bridging capability; nonionic polyacrylamide plays an adsorption bridging role; flocculent precipitate is generated by suspended particles; and the composite flocculant has the advantages of low coagulant amount, good effect, low generated sludge amount, high reaction speed, high sedimentation rate, high CODcf removal rate, good decolorizing effect, wide pH application range and the like when used for processing the printing and dyeing wastewater of wool fabric, and has a wide industrial application prospect and market value.
Description
Technical field
The present invention relates to composite flocculation agent, be specifically related to a kind of for processing wool fabric dyeing waste water
Composite flocculation agent and preparation method thereof, belongs to treatment of dyeing wastewater field.
Background technology
Along with the fast development of national economy, single cotton textiles, pure wool, silk, fiber product can not
Meeting people should the requirement of the various functions such as the most warming, smooth attractive in appearance to fabric.Wool fabric is tied
Closed bafta have excellent feel and taking and wool fabric is fine and soft, moisture absorption, the feature such as warming, with
The appearance of wool fabric, wool fabric is printed and dyed also into high-speed development period, equipment and technical merit
Being obviously improved, production technology and equipment are constantly updated and are regenerated, but the dyeing waste water of wool fabric is therewith
Producing, this type of wool fabric dyeing waste water complicated component, colourity is big, and concentration is high, and hard-degraded substance is many,
COD value is high, and water quality is changeable.
At present, physical treatment process that domestic treatment of dyeing wastewater means have, biochemical treatment process, chemistry
Facture or two of which or three kinds of factures combine.
Physical treatment process is mainly based on absorption method, mainly by the porous mass such as activated carbon, clay
Powder or particle mix with waste water, or allow the filter bed that waste water consists of its granular substance, by waste water
In polluter adsorb on porous mass surface.The shortcoming of physical treatment process is body refuse generation amount
Greatly, subsequent treatment difficulty is big.
Traditional biological treatment has aerobic and Anaerobic biotreatment method, but can not meet printing and dyeing row
The demand of industry, dyeing waste water, as the organic wastewater of high concentration, the most all should not directly carry out biology side
Method processes, thus occurs in that the chemical treatment method as pretreatment.
Method of chemical treatment includes again oxidizing process, Coagulation Method etc., and oxidizing process mainly has ozone oxidation and light oxygen
The several methods such as change method, oxidizing process good decolorizing effect, but power consumption is many, and large-scale promotion application has necessarily
Difficulty.Coagulation Method mainly has coagulant sedimentation and mixed condensed gas flotation process, easily produces some poisonous precipitations,
Causing secondary pollution, precipitation process can produce again substantial amounts of solid simultaneously.Use at present at flucculation process
The medicament that reason dyeing waste water is commonly used is based on inorganic aluminate, molysite, but these inorganic flocculating agents are to activity
The decolorizing effect of the water-soluble dyes such as dyestuff, sour fuel and direct fuel is poor, it is difficult to reach actual
Environmental improvement requirement.
In order to solve the problem of above-mentioned single flocculant decolorizing effect difference, in conjunction with organic flocculant and inorganic
The advantage of flocculant, it is the most necessary for developing a kind of organic-inorganic composite flocculant.
Summary of the invention
It is an object of the invention to provide one and prepare simply, easy to use, sinking speed is fast, CODcr
Clearance and the high composite flocculation agent for wool fabric treatment of dyeing wastewater of percent of decolourization.
It is a further object to provide a kind of composite flocculation processing wool fabric dyeing waste water
The preparation method of agent.
The present invention provides a kind of and processes wool fabric dyeing waste water composite flocculation agent, it is characterised in that: bag
Include PAFC, poly-aluminum calcium chloride, non-ionic polyacrylamide, cocoanut shell powder and silicon
Acid sodium.
Preferably, in described process wool fabric dyeing waste water composite flocculation agent, in parts by weight, its
Concrete constituent content is as follows: PAFC 25-40 part, and poly-aluminum calcium chloride 35-45 part is non-
Cationic polyacrylamide 10-15 part, cocoanut shell powder 40-55 part, sodium metasilicate 12-20 part.
Preferably, described cocoanut shell powder utilizes crushing mechanism to crush, and particle diameter is 1.8-2.2mm.
The present invention provides a kind of preparation method processing wool fabric dyeing waste water composite flocculation agent, and it is special
Levy and be: comprise the following steps:
(1) non-ionic polyacrylamide is prepared: PAA is added that mass concentration is 32%-38% third
The acrylamide aqueous solution, making the PAA of the addition concentration in mixed liquor is 0.5%-1.5%；Again upper
State and add sodium hydrogensulfite after mixed solution adds oxidant, chain-transferring agent, mix, in
Carry out at 10-15 DEG C being incubated polyase 13-5h, after being polymerized, carry out granulation, dry, pulverize, mistake
Sieve, obtains non-ionic polyacrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution of 0.5%-0.8%, by PAFC, polymerization
Aluminum calcium chloride, cocoanut shell powder, sodium metasilicate put in the non-ionic polyacrylamide aqueous solution of 500ml,
It is stirred continuously；
(3) composite solution in described step (2) is warming up to 80-95 DEG C, recombination reaction 6-7h；
Preferably, in described step (1), oxidant is ammonium persulfate or potassium peroxydisulfate.
Preferably, described step (1) Chain transfer agent is lauryl mercaptan.
Preferably, in described step (2), speed of agitator is 150-220 rev/min, and mixing time is
30-45min。
The beneficial effects of the present invention is: (1) the invention provides a kind of Organic-inorganic composite floccule body
System processes wool fabric dyeing waste water, the problem solving single flocculant decolorizing effect difference, can efficiently locate
Reason wool fabric dyeing waste water, decolouring is more thorough, and percent of decolourization reaches more than 90%.(2) present invention
Carrying out waste water process at normal temperatures and pressures, reaction condition is simple.(3) compound wadding prepared by the present invention
Solidifying agent viscosity is big, good stability；Preparation method is easily controllable, it is simple to industrialized production.(4) exist
When carrying out wool fabric treatment of dyeing wastewater, composite flocculation agent prepared by the present invention is single inorganic with conventional
Flocculant or single organic flocculant compare that to have consumption few, the spy such as sinking speed is fast, good decolorizing effect
Point.(5) composite flocculation agent prepared by the present invention also overcomes current Dicyandiamine-formaldehyde condensation product class wadding
Solidifying agent molecule amount is low, and when processing wool fabric dyeing waste water, floc sedimentation is little, and sinking speed is slow, it is difficult to locate afterwards
The deficiencies such as reason.
Detailed description of the invention
Below by specific embodiment, the present invention is described further, but embodiment is not intended to this
Bright protection domain.
Embodiment 1
PAA is added the acrylamide aqueous solution that 1L mass concentration is 32%, makes the third of addition
Olefin(e) acid sodium concentration in mixed liquor is 0.5%；Again in above-mentioned mixed solution add 2g ammonium sulfate,
Add 2.3g sodium hydrogensulfite after 3g lauryl mercaptan, mix, protect at 10-15 DEG C
Temperature polyase 13-5h, after being polymerized, carries out granulation, dries, and pulverizes, sieves, and obtains nonionic and gathers
Acrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution 1L of 0.5%, will in parts by weight, put into
PAFC 25 parts, poly-aluminum calcium chloride 35 parts, the cocoanut shell powder 40 of particle diameter 1.8mm
Part, sodium metasilicate 12 parts, is 150 revs/min at speed of agitator, and mixing time is 40min.
(3) composite solution in described step (2) is warming up to 80 DEG C, recombination reaction 6h；
Embodiment 2
PAA is added the acrylamide aqueous solution that 1L mass concentration is 34%, makes the third of addition
Olefin(e) acid sodium concentration in mixed liquor is 0.8%；Again in above-mentioned mixed solution add 2g ammonium sulfate,
Add 2.3g sodium hydrogensulfite after 3g lauryl mercaptan, mix, protect at 10-15 DEG C
Temperature polyase 13-5h, after being polymerized, carries out granulation, dries, and pulverizes, sieves, and obtains nonionic and gathers
Acrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution 1L of 0.6%, will in parts by weight, put into
PAFC 30 parts, poly-aluminum calcium chloride 38 parts, the cocoanut shell powder 45 of particle diameter 1.8mm
Part, sodium metasilicate 14 parts, is 160 revs/min at speed of agitator, and mixing time is 40min.
(3) composite solution in described step (2) is warming up to 85 DEG C, recombination reaction 6h；
Embodiment 3
PAA is added the acrylamide aqueous solution that 1L mass concentration is 36%, makes the third of addition
Olefin(e) acid sodium concentration in mixed liquor is 1.0%；2.5g persulfuric acid is added again in above-mentioned mixed solution
Add 2.3g sodium hydrogensulfite after potassium, 3g lauryl mercaptan, mix, enter at 10-15 DEG C
Row insulation polyase 13-5h, after be polymerized, carry out granulation, dry, pulverizing, sieve, obtain non-from
Sub-polyacrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution 1L of 0.7%, will in parts by weight, put into
PAFC 35 parts, poly-aluminum calcium chloride 40 parts, the cocoanut shell powder 50 of particle diameter 2.0mm
Part, sodium metasilicate 16 parts, is 200 revs/min at speed of agitator, and mixing time is 45min.
(3) composite solution in described step (2) is warming up to 90 DEG C, recombination reaction 7h；
Embodiment 4
PAA is added the acrylamide aqueous solution that 1L mass concentration is 38%, makes the third of addition
Olefin(e) acid sodium concentration in mixed liquor is 1.2%；2.5g persulfuric acid is added again in above-mentioned mixed solution
Add 2.3g sodium hydrogensulfite after potassium, 3g lauryl mercaptan, mix, enter at 10-15 DEG C
Row insulation polyase 13-5h, after be polymerized, carry out granulation, dry, pulverizing, sieve, obtain non-from
Sub-polyacrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution 1L of 0.8%, will in parts by weight, put into
PAFC 40 parts, poly-aluminum calcium chloride 40 parts, the cocoanut shell powder 50 of particle diameter 2.2mm
Part, sodium metasilicate 16 parts, is 200 revs/min at speed of agitator, and mixing time is 45min.
(3) composite solution in described step (2) is warming up to 90 DEG C, recombination reaction 7h；
Embodiment 5
PAA is added the acrylamide aqueous solution that 1L mass concentration is 38%, makes the third of addition
Olefin(e) acid sodium concentration in mixed liquor is 1.5%；2.5g persulfuric acid is added again in above-mentioned mixed solution
Add 2.3g sodium hydrogensulfite after potassium, 3g lauryl mercaptan, mix, enter at 10-15 DEG C
Row insulation polyase 13-5h, after be polymerized, carry out granulation, dry, pulverizing, sieve, obtain non-from
Sub-polyacrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution 1L of 0.8%, will in parts by weight, put into
PAFC 40 parts, aluminium polychloride Ca45 part, the cocoanut shell powder 55 of particle diameter 2.2mm,
Sodium metasilicate 20 parts, is 220 revs/min at speed of agitator, and mixing time is 45min.
(3) composite solution in described step (2) is warming up to 95 DEG C, recombination reaction 7h；
Composite flocculation agent embodiment 1-5 prepared takes 30ml respectively, is separately added into the wool face of 1L
Material dyeing waste water, the pH value of regulation wool fabric dyeing waste water is 6-7, stirs 5 minutes, stands
45 minutes.Measure settling of floccus time, CODcr clearance and percent of decolourization respectively.Detection data
It is listed as follows:
| CODcr clearance (%) | Percent of decolourization (%) | The settling of floccus time (min) | |
| Embodiment 1 | 85.2 | 93.8 | 6 |
| Embodiment 2 | 86.5 | 94.6 | 5.6 |
| Embodiment 3 | 85.8 | 95.7 | 5.5 |
| Embodiment 4 | 87.3 | 95.8 | 6.2 |
| Embodiment 5 | 86.9 | 94.5 | 5.9 |
It should be noted that above example is only in order to illustrate technical scheme and unrestricted.
Although being described in detail the present invention with reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, the technical scheme of invention can be modified or equivalent, without deviating from the present invention
The scope of technical scheme, it all should be contained in scope of the presently claimed invention.
Claims (7)
1. one kind processes wool fabric dyeing waste water composite flocculation agent, it is characterised in that: include PAFC, poly-aluminum calcium chloride, non-ionic polyacrylamide, cocoanut shell powder and sodium metasilicate.
2. process wool fabric dyeing waste water composite flocculation agent as claimed in claim 1, it is characterized in that: in described process wool fabric dyeing waste water composite flocculation agent, in parts by weight, its concrete constituent content is as follows: PAFC 25-40 part, poly-aluminum calcium chloride 35-45 part, non-ionic polyacrylamide 10-15 part, cocoanut shell powder 40-55 part, sodium metasilicate 12-20 part.
3. process wool fabric dyeing waste water composite flocculation agent as claimed in claim 1 or 2, it is characterised in that: described cocoanut shell powder utilizes crushing mechanism to crush, and particle diameter is 1.8-2.2mm.
4. the preparation method processing wool fabric dyeing waste water composite flocculation agent, it is characterised in that: comprise the following steps:
(1) preparing non-ionic polyacrylamide: PAA adds the acrylamide aqueous solution that mass concentration is 18%-24%, making the PAA of the addition concentration in mixed liquor is 0.5%-1.5%；Add sodium hydrogensulfite after adding oxidant, chain-transferring agent in above-mentioned mixed solution again, mix, carry out being incubated polyase 13-5h at 10-15 DEG C, after being polymerized, carry out granulation, dry, pulverize, sieve, obtain non-ionic polyacrylamide finished product；
(2) non-ionic polyacrylamide is made into the aqueous solution of 0.3%-0.5%, by PAFC, poly-aluminum calcium chloride, cocoanut shell powder, sodium metasilicate put into 500ml the non-ionic polyacrylamide aqueous solution in, be stirred continuously；
(3) composite solution in described step (2) is warming up to 60-70 DEG C, recombination reaction 6-7h.
A kind of preparation method processing wool fabric dyeing waste water composite flocculation agent the most as claimed in claim 4, it is characterised in that: in described step (1), oxidant is ammonium persulfate or potassium peroxydisulfate.
A kind of preparation method processing wool fabric dyeing waste water composite flocculation agent the most as claimed in claim 4, it is characterised in that: described step (1) Chain transfer agent is lauryl mercaptan.
A kind of preparation method processing wool fabric dyeing waste water composite flocculation agent the most as claimed in claim 4, it is characterised in that: in described step (2), speed of agitator is 150-220 rev/min, and mixing time is 30-45min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610333085.4A CN105906008A (en) | 2016-05-19 | 2016-05-19 | Composite flocculant for processing printing and dyeing wastewater of wool fabric and preparation method of composite flocculant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610333085.4A CN105906008A (en) | 2016-05-19 | 2016-05-19 | Composite flocculant for processing printing and dyeing wastewater of wool fabric and preparation method of composite flocculant |
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| CN201610333085.4A Pending CN105906008A (en) | 2016-05-19 | 2016-05-19 | Composite flocculant for processing printing and dyeing wastewater of wool fabric and preparation method of composite flocculant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517582A (en) * | 2016-11-25 | 2017-03-22 | 南宁市黑晶信息技术有限公司 | Method for treating printing and dyeing wastewater of pure wool textile fabrics |
| CN115583766A (en) * | 2022-11-04 | 2023-01-10 | 中国科学院过程工程研究所 | Method for treating cyanide-containing wastewater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005193144A (en) * | 2004-01-07 | 2005-07-21 | Hanayama Kogyo Kk | Method for recycling waste alkali volume decrease processing liquid of polyester fiber |
| CN102765789A (en) * | 2012-06-26 | 2012-11-07 | 华东理工大学 | Preparation method of poly-aluminum calcium chloride |
| CN103232101A (en) * | 2013-05-31 | 2013-08-07 | 滁州友林科技发展有限公司 | Water treatment flocculating agent |
| CN103613705A (en) * | 2013-10-21 | 2014-03-05 | 青岛三力本诺化学工业有限公司 | Preparation method for nonionic polyacrylamide |
| CN104229957A (en) * | 2013-06-24 | 2014-12-24 | 张家领 | Compound flocculant taking natural minerals as main components |
-
2016
- 2016-05-19 CN CN201610333085.4A patent/CN105906008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005193144A (en) * | 2004-01-07 | 2005-07-21 | Hanayama Kogyo Kk | Method for recycling waste alkali volume decrease processing liquid of polyester fiber |
| CN102765789A (en) * | 2012-06-26 | 2012-11-07 | 华东理工大学 | Preparation method of poly-aluminum calcium chloride |
| CN103232101A (en) * | 2013-05-31 | 2013-08-07 | 滁州友林科技发展有限公司 | Water treatment flocculating agent |
| CN104229957A (en) * | 2013-06-24 | 2014-12-24 | 张家领 | Compound flocculant taking natural minerals as main components |
| CN103613705A (en) * | 2013-10-21 | 2014-03-05 | 青岛三力本诺化学工业有限公司 | Preparation method for nonionic polyacrylamide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517582A (en) * | 2016-11-25 | 2017-03-22 | 南宁市黑晶信息技术有限公司 | Method for treating printing and dyeing wastewater of pure wool textile fabrics |
| CN115583766A (en) * | 2022-11-04 | 2023-01-10 | 中国科学院过程工程研究所 | Method for treating cyanide-containing wastewater |
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Application publication date: 20160831 |