CN101423274A - Method for preparing composite flocculant for treating printing and dyeing wastewater using reactive dye as main component - Google Patents
Method for preparing composite flocculant for treating printing and dyeing wastewater using reactive dye as main component Download PDFInfo
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- CN101423274A CN101423274A CNA2008102031780A CN200810203178A CN101423274A CN 101423274 A CN101423274 A CN 101423274A CN A2008102031780 A CNA2008102031780 A CN A2008102031780A CN 200810203178 A CN200810203178 A CN 200810203178A CN 101423274 A CN101423274 A CN 101423274A
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Abstract
The invention relates to a preparation method for the composite flocculant of printing and dyeing wastewater mainly treating reactive dyes, comprising the following steps: (1) reactive clay mine, flocculant and fixing agent Y are weighted according to the mass ratio of 10-50:10:0-2 and then thrown and added into the printing and dyeing wastewater; and (2) the throwing and adding sequence is firstly adding the clay mine and then the flocculant, wherein, the flocculant is thrown and added in a form of powder or liquid shape, finally, the liquid-shaped fixing agent Y with the concentration of 2g/L is added, with the rapid stirring 250r/min for 1min of the time, the slow stirring 80-100r/min for 13-8min of the time and 8min of the standing. The composite flocculant improves the printing and dyeing wastewater decolorization rate and the COD removal efficiency, simultaneously enhances the sedimentation performance and the filtration rate, and also reduces the sediment; especially, the removal rate for the reactive dyes waste liquid COD reaches over 60 percent; and the preparation process is simple, the using effect is good, and the pollution to the environment is reduced when the cost is lowered.
Description
Technical field
The invention belongs to the preparation field of composite flocculation agent, particularly relate to a kind of preparation method of the composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs.
Background technology
Dyeing waste water is a kind of trade effluent of serious environment pollution, and it is difficult to handle with active dye wastewater especially in the dyeing waste water, because the structure of reactive dyestuffs, contain a large amount of slurries in dyeing and the pre-process and post-process process, auxiliary agent, finish, soda acid, fiber impurity and inorganic salt etc., waste water has the concentration height, colourity height, characteristics such as difficult degradation, for this reason, existing many technology are used for treatment of dyeing and printing.At present, the flocculation agent that is used for treatment of dyeing wastewater is of a great variety, as aluminum chloride, and Tai-Ace S 150, inorganic flocculating agents such as ferrous sulfate, still, this class inorganic flocculating agent is to the decolorization of dyeing weak effect, and sludge quantity is big, and treatment effect is undesirable.Therefore the urgent hope of dyeing can provide a kind of new flocculation agent.Polymer inorganic flocculating agent such as commercially available polymerize aluminum chloride, PAFS etc., its shortcoming is on the high side, causes the sewage disposal expense too high.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of the composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs, composite flocculation agent of the present invention, decolorizing printing and dyeing waste water rate and COD clearance have been improved, also improve settling property and filtration velocity simultaneously, and the minimizing sediment, especially the clearance for reactive dyestuffs waste liquid COD reaches more than 60%; This preparation technology is simple, and result of use is good, has also reduced the pollution to environment when having reduced cost.
The preparation method of a kind of composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs of the present invention comprises:
(1) activated clay ore deposit, flocculation agent are weighed by mass ratio 10-50:10, and added in dyeing waste water;
(2) add clay pit earlier in whipping process, add flocculation agent again, wherein flocculation agent adds with powdery or liquid form, stirs 250r/min fast, and time 1min stirs 80-100r/min at a slow speed, and time 3-8min leaves standstill 30-90min.
Last adding concentration is the liquid color fixing agent Y of 2g/L in the described step (2), and wherein the mass ratio of activated clay ore deposit, flocculation agent and color fixing agent Y is 10-50:10:0-2, leaves standstill 8min;
Described color fixing agent Y is Dyhard RU 100 formaldehyde initial reduced body (the preshrunk body that is formed by Dyhard RU 100, ammonia chloride, formaldehyde condensation), this color fixing agent Y is cationic, solid content 30-60% is mainly used in dye printing or dye fixing agent such as acidity, activity, is provided by Shangyu city wound peaking factory;
Described activated clay ore deposit is through the attapulgite clay of 460-600 degree centigrade of roasting after 1-3 hours;
Described flocculation agent is PAFS or Tai-Ace S 150;
The dosing method of described clay pit is that pressed powder adds.
The present invention can select not add color fixing agent Y to reach the purpose that reduces cost in selecting the process that feeds intake, under the situation that does not add color fixing agent Y, after twice stirring, the time of leaving standstill should be controlled at 30-90min.
The starting material attapulgite clay wide material sources that the present invention adopts, cost is low, belongs to ep-type material, and the adding of attapulgite clay has flocculation agent integral body better to help filter to help the effect of coagulating, and flco is more closely knit, and sedimentation and filtration velocity are faster, and the filter residue water ratio is lower; Also improved the pH value use range of using, reduced and regulated the trouble that waste water ph brought.
Composite flocculant of the present invention is for COD and chroma removal rate height, use range is wide, can be suitable for wider pH value environment and wideer temperature use range, not only obvious to acidity and dispersed dye treatment effect, also better for the active dye wastewater treatment effect that is difficult to handle, reactive dyestuffs waste liquid COD clearance is greater than 60%, and the mud after handling can by 460-600 degree roasting three hours once more by with the composite use of flocculation agent, thereby further reduce environmental pollution and handle waste water and use price.
Beneficial effect
(1) composite flocculation agent of the present invention has improved decolorizing printing and dyeing waste water rate and COD clearance, also improves settling property and filtration velocity simultaneously, and reduces sediment, and especially the clearance for reactive dyestuffs waste liquid COD reaches more than 60%;
(2) this preparation technology is simple, and result of use is good, has also reduced the pollution to environment when having reduced cost.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Below be simulated waste used in the present embodiment:
Simulated waste liquid waste concentration flocculation agent is to the consumption of every liter of waste liquid
Reactive yellow C-2R 100mg/L 400mg/L
Xylene Red MF-GRLN 100mg/L 200mg/L
DISPERSE YELLOW SF-6G 100mg/L 100mg/L
Embodiment 1
Concentration of treatment is the reactive yellow C-2R simulated waste (simulated waste pH value is 9-10) of 100mg/L
1. dispose 4 kinds of flocculation agents respectively: (1) addition of aluminum sulfate is 500mg/L; (2) 500 ℃ of recessed native consumption 1500mg/L of incinerating, addition of aluminum sulfate is 500mg/L; (3) PAFS consumption 400mg/L; (4) 500 ℃ of recessed native consumption 1200mg/L of incinerating, PAFS consumption 400mg/L, the CODcr clearance the results are shown in Table 1.
Table 1
As can be seen from Table 1: the composite aftertreatment simulated waste of flocculation agent and recessed soil, COD clearance and percent of decolourization have obvious raising when handling than independent use flocculation agent.
2. get the reactive yellow C-2R simulated waste of 100mL 100mg/L, handle with above-mentioned 4 kinds of flocculation agents respectively, behind the enhanced coagulation, leave standstill, discard supernatant liquid, the bottom alumen ustum is moved into the 10mL graduated cylinder, standing sedimentation reads volume reading, and the result is as shown in table 2.
Table 2
| Rest time (min) | Tai-Ace S 150 (mL) | Tai-Ace S 150 and recessed native compound (mL) | PAFS (mL) | PAFS and recessed native compound (mL) |
| 10 | 9.8 | 3.8 | 8.0 | 3.6 |
| 20 | 7.4 | 3.0 | 6.0 | 3.0 |
| 30 | 6.6 | 2.6 | 5.0 | 2.6 |
| 40 | 6.0 | 2.4 | 4.4 | 2.4 |
| 50 | 5.4 | 2.2 | 3.9 | 2.2 |
| 60 | 5.0 | 2.1 | 3.5 | 2.2 |
| 70 | 4.6 | 2.0 | 3.2 | 2.1 |
| 90 | 4.0 | 1.9 | 2.9 | 2.0 |
| 120 | 3.4 | 1.8 | 2.5 | 1.9 |
| 150 | 3.1 | 1.7 | 2.2 | 1.8 |
As can be known, the composite use of recessed soil and flocculation agent can significantly increase the density of flco, improves its settling property from last table.3. handle the reactive yellow C-2R simulated waste of 100mg/L respectively with above-mentioned 4 kinds of flocculation agents, behind the enhanced coagulation, leave standstill vacuum filtration.Investigate preparation method and the filter effect that uses separately under the flocculation agent method, the result is as shown in table 3.
Table 3
| The flocculation agent kind | The suction filtration time is (min) approximately | Filter cake moisture content is (%) approximately |
| Polymeric ferric aluminum | 13.1 | 56.1 |
| Polymeric ferric aluminum and recessed native compound | 6.5 | 23.7 |
| Tai-Ace S 150 | 13.9 | 60.6 |
| Tai-Ace S 150 and recessed native compound | 7.1 | 13.1 |
From last table can: the composite aftertreatment simulated waste of flocculation agent and recessed soil, make that the suction filtration time is shorter, cake moisture is lower.
4. recycling
500 ℃ down behind the calcining 1h with the composite use dye wastewater treatment using of flocculation agent after mud at 500 ℃ down behind the calcining 3h, again with the composite dye wastewater treatment using that is used for of flocculation agent, comparing result is as shown in table 4 before and after utilizing again:
Table 4
| The flocculation agent kind | The active dye wastewater treatment condition | The first percent of decolourization that uses | Utilize maturing temperature again | Utilize percent of decolourization again |
| PAFS and recessed native compound | PH=11,500 ℃ of calcined claies of 500mg/L polymeric ferric aluminum, ratio 1:3 | 87.3％ | 500℃ *3h | 87.2％ |
| Tai-Ace S 150 and recessed native compound | PH=11,400mg/L Tai-Ace S 150,500 ℃ of calcined claies, ratio 1:3 | 90.3％ | 500℃ *3h | 90.1％ |
Embodiment 2
Concentration is the Xylene Red MF-GRLN simulated waste of 100mg/L, without the recessed native consumption 300-600mg/L of incinerating, the PAFS consumption is 100-200mg/L (being that attapulgite clay and flocculation agent ratio are 3:1), dye liquor pH value is 5-11, two kinds of dyestuff waste liquid percent of decolourizations reach 90% and more than, the CODcr clearance reaches about 80%.
Embodiment 3
Concentration is the DISPERSE YELLOW SF-6G simulated waste dye liquor of 100mg/L, without the recessed native consumption 300-600mg/L of incinerating, the PAFS consumption is 100-200mg/L (being that attapulgite clay and flocculation agent ratio are 3:1), dye liquor pH value is 5-11, two kinds of dyestuff waste liquid percent of decolourizations reach 90% and more than, the CODcr clearance reaches about 80%.
Claims (6)
1. a processing comprises based on the preparation method of the composite flocculation agent of the dyeing waste water of reactive dyestuffs:
(1) weighed by mass ratio 10-50:10 in activated clay ore deposit and flocculation agent, and in dyeing waste water, add;
(2) add clay pit earlier in whipping process, add flocculation agent again, wherein flocculation agent adds with powdery or liquid form, stirs 250r/min fast, and time 1min stirs 80-100r/min at a slow speed, and time 3-8min leaves standstill 30-90min.
2. the preparation method of a kind of composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs according to claim 1, it is characterized in that: last adding concentration is the liquid color fixing agent Y of 2g/L in the described step (2), wherein the mass ratio of activated clay ore deposit, flocculation agent and color fixing agent Y is 10-50:10:0-2, leaves standstill 8min.
3. the preparation method of a kind of composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs according to claim 2, it is characterized in that: described color fixing agent Y is a Dyhard RU 100 formaldehyde initial reduced body, and this color fixing agent Y is cationic, solid content 30-60%.
4. the preparation method of a kind of composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs according to claim 1, it is characterized in that: described activated clay ore deposit is through the attapulgite clay of 460-600 degree centigrade of roasting after 1-3 hours.
5. the preparation method of a kind of composite flocculation agent based on the dyeing waste water of handling reactive dyestuffs according to claim 1, it is characterized in that: described flocculation agent is PAFS or Tai-Ace S 150.
6. a kind of processing according to claim 1 is characterized in that based on the preparation method of the composite flocculation agent of the dyeing waste water of reactive dyestuffs: the dosing method of described clay pit is that pressed powder adds.
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| CNA2008102031780A CN101423274A (en) | 2008-11-21 | 2008-11-21 | Method for preparing composite flocculant for treating printing and dyeing wastewater using reactive dye as main component |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294197A (en) * | 2011-07-04 | 2011-12-28 | 厦门市闽发实业有限公司 | Preparation method and application method of quaternary ammonium salt cationic surfactant |
| CN102583594A (en) * | 2012-02-29 | 2012-07-18 | 祝洪哲 | Natural clarifying agent for sewage treatment and use method thereof |
| CZ304142B6 (en) * | 2012-09-27 | 2013-11-13 | Univerzita Pardubice | Flocculant, process of its preparation and use |
| CN104291494A (en) * | 2014-10-29 | 2015-01-21 | 山东华亚环保科技有限公司 | Treatment process for textile wastewater |
| CN104944550A (en) * | 2015-06-10 | 2015-09-30 | 上海丰信环保科技有限公司 | Special flocculant synthesized by high-aluminium sludge in petrochemical industry and used for printing and dyeing wastewater reuse reverse osmosis membrane |
| CN106115838A (en) * | 2016-08-25 | 2016-11-16 | 桂林市味美园餐饮管理有限公司 | A kind of purifying agent for polluted water for reducing COD value |
| CN109679791A (en) * | 2018-11-06 | 2019-04-26 | 枞阳县毛巾有限责任公司 | A kind of builder and preparation method thereof improving towel color protection ability |
| CN113149165A (en) * | 2021-03-10 | 2021-07-23 | 四川大学 | Treating agent for recycling wastewater of leather-making dyeing and finishing section, and preparation method and treatment method thereof |
-
2008
- 2008-11-21 CN CNA2008102031780A patent/CN101423274A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294197A (en) * | 2011-07-04 | 2011-12-28 | 厦门市闽发实业有限公司 | Preparation method and application method of quaternary ammonium salt cationic surfactant |
| CN102583594A (en) * | 2012-02-29 | 2012-07-18 | 祝洪哲 | Natural clarifying agent for sewage treatment and use method thereof |
| CZ304142B6 (en) * | 2012-09-27 | 2013-11-13 | Univerzita Pardubice | Flocculant, process of its preparation and use |
| CN104291494A (en) * | 2014-10-29 | 2015-01-21 | 山东华亚环保科技有限公司 | Treatment process for textile wastewater |
| CN104944550A (en) * | 2015-06-10 | 2015-09-30 | 上海丰信环保科技有限公司 | Special flocculant synthesized by high-aluminium sludge in petrochemical industry and used for printing and dyeing wastewater reuse reverse osmosis membrane |
| CN106115838A (en) * | 2016-08-25 | 2016-11-16 | 桂林市味美园餐饮管理有限公司 | A kind of purifying agent for polluted water for reducing COD value |
| CN109679791A (en) * | 2018-11-06 | 2019-04-26 | 枞阳县毛巾有限责任公司 | A kind of builder and preparation method thereof improving towel color protection ability |
| CN113149165A (en) * | 2021-03-10 | 2021-07-23 | 四川大学 | Treating agent for recycling wastewater of leather-making dyeing and finishing section, and preparation method and treatment method thereof |
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Open date: 20090506 |