CN103641222A - Preparation method of composite flocculant for treatment of printing and dyeing wastewater - Google Patents
Preparation method of composite flocculant for treatment of printing and dyeing wastewater Download PDFInfo
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- CN103641222A CN103641222A CN201310625503.3A CN201310625503A CN103641222A CN 103641222 A CN103641222 A CN 103641222A CN 201310625503 A CN201310625503 A CN 201310625503A CN 103641222 A CN103641222 A CN 103641222A
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Abstract
The invention discloses a preparation method of a composite flocculant for treatment of printing and dyeing wastewater. The preparation method comprises the following steps: 1) respectively grinding 6-9 parts by weight of magnesium sulfate heptahydrate, 80-90 parts by weight of sintered red mud, 2-3 parts by weight of spinel, 110-120 parts by weight of bayer-sinter combination method red mud and 3-6 parts by weight of pyrope, sieving by a 320-330-mesh sieve, and baking at the temperature of 810-820 DEG C for activating for 3-4h; 2) further putting into a reaction kettle, adding 250-300 parts by weight of hydrochloric acid with the concentration of 40%, sealing the reaction kettle, and reacting under heat preservation and pressure preservation, wherein the heat preservation temperature is 220-230 DEG C, the pressure preservation pressure is 3.5-4 MPa, and the reaction time is 12-13h; 3) adding 40-60 parts by weight of calcium aluminate powder into the reaction kettle, and mixing and stirring for 4-5h to prepare the composite flocculant. The composite flocculant prepared by the preparation method disclosed by the invention has a better decoloring effect on active dyes, reducing dyes, acidic dyes and the like, and particularly has a better decoloring effect and higher COD (chemical oxygen demand) removal rate against alkaline printing and dyeing wastewater.
Description
Technical field
The present invention relates to the preparation method for the composite flocculation agent for the treatment of of dyeing wastewater.
Background technology
Dyeing waste water is the waste water that textile product manufacturing procedure is discharged, dyeing waste water complicated component, difficult, and existing coagulating treatment method treatment of dyeing and printing mainly adopts chemical floc, and floc particle is loose, and settling property is poor.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of the composite flocculation agent for treatment of dyeing wastewater, its composite flocculation agent of preparing all has good decolorization to reactive dyestuffs, vat, matching stain etc., especially waste water of basic printing and dyeing is had to good decolorizing effect and higher COD clearance.
For achieving the above object, technical scheme of the present invention is to design a kind of preparation method of the composite flocculation agent for treatment of dyeing wastewater, comprises the steps:
1) 6～9 mass parts magnesium sulfate heptahydrates, 80～90 mass parts red mud from sintering process, 2～3 mass parts spinels, 110～120 mass parts mixed combining method red muds, 3～6 mass parts rhodolites were ground respectively to 320～330 mesh sieves, 810～820 ℃ of calcination activations 3～4 hours;
2) drop in reactor again, add the hydrochloric acid of 250～300 mass parts concentration 40%, by reactor sealing, insulation, pressurize are reacted, and holding temperature is 220～230 ℃, and dwell pressure is 3.5～4 MPas, and the reaction times is 12～13 hours;
3) in reactor, add 40～60 mass parts calcium aluminate powder again, mix and blend 4～5 hours, makes composite flocculation agent.
Advantage of the present invention and beneficial effect are: the preparation method that a kind of composite flocculation agent for treatment of dyeing wastewater is provided, its composite flocculation agent of preparing all has good decolorization to reactive dyestuffs, vat, matching stain etc., especially waste water of basic printing and dyeing is had to good decolorizing effect and higher COD clearance.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
The concrete technical scheme of implementing of the present invention is:
Embodiment 1
A preparation method for the composite flocculation agent for the treatment of of dyeing wastewater, comprises the steps:
1) 6 mass parts magnesium sulfate heptahydrates, 80 mass parts red mud from sintering process, 2 mass parts spinels, 110 mass parts mixed combining method red muds, 3 mass parts rhodolites were ground respectively to 320 mesh sieves, 810 ℃ of calcination activations 3 hours;
2) drop in reactor again, add the hydrochloric acid of 250 mass parts concentration 40%, by reactor sealing, insulation, pressurize are reacted, and holding temperature is 220 ℃, and dwell pressure is 3.5 MPas, and the reaction times is 12 hours;
3) in reactor, add 40 mass parts calcium aluminate powder again, mix and blend 4 hours, makes composite flocculation agent.
Embodiment 2
A preparation method for the composite flocculation agent for the treatment of of dyeing wastewater, comprises the steps:
1) 9 mass parts magnesium sulfate heptahydrates, 90 mass parts red mud from sintering process, 3 mass parts spinels, 120 mass parts mixed combining method red muds, 6 mass parts rhodolites were ground respectively to 330 mesh sieves, 820 ℃ of calcination activations 4 hours;
2) drop in reactor again, add the hydrochloric acid of 300 mass parts concentration 40%, by reactor sealing, insulation, pressurize are reacted, and holding temperature is 230 ℃, and dwell pressure is 4 MPas, and the reaction times is 13 hours;
3) in reactor, add 60 mass parts calcium aluminate powder again, mix and blend 5 hours, makes composite flocculation agent.
Embodiment 3
A preparation method for the composite flocculation agent for the treatment of of dyeing wastewater, comprises the steps:
1) 6.9 mass parts magnesium sulfate heptahydrates, 86 mass parts red mud from sintering process, 2.3 mass parts spinels, 118 mass parts mixed combining method red muds, 3.6 mass parts rhodolites were ground respectively to 327 mesh sieves, 817 ℃ of calcination activations 3.5 hours;
2) drop in reactor again, add the hydrochloric acid of 260 mass parts concentration 40%, by reactor sealing, insulation, pressurize are reacted, and holding temperature is 226 ℃, and dwell pressure is 3.8 MPas, and the reaction times is 12.5 hours;
3) in reactor, add 50 mass parts calcium aluminate powder again, mix and blend 4.5 hours, makes composite flocculation agent.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. for the preparation method of the composite flocculation agent for the treatment of of dyeing wastewater, it is characterized in that, comprise the steps:
1) 6～9 mass parts magnesium sulfate heptahydrates, 80～90 mass parts red mud from sintering process, 2～3 mass parts spinels, 110～120 mass parts mixed combining method red muds, 3～6 mass parts rhodolites were ground respectively to 320～330 mesh sieves, 810～820 ℃ of calcination activations 3～4 hours;
2) drop in reactor again, add the hydrochloric acid of 250～300 mass parts concentration 40%, by reactor sealing, insulation, pressurize are reacted, and holding temperature is 220～230 ℃, and dwell pressure is 3.5～4 MPas, and the reaction times is 12～13 hours;
3) in reactor, add 40～60 mass parts calcium aluminate powder again, mix and blend 4～5 hours, makes composite flocculation agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310625503.3A CN103641222A (en) | 2013-12-02 | 2013-12-02 | Preparation method of composite flocculant for treatment of printing and dyeing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310625503.3A CN103641222A (en) | 2013-12-02 | 2013-12-02 | Preparation method of composite flocculant for treatment of printing and dyeing wastewater |
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| CN103641222A true CN103641222A (en) | 2014-03-19 |
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| CN201310625503.3A Pending CN103641222A (en) | 2013-12-02 | 2013-12-02 | Preparation method of composite flocculant for treatment of printing and dyeing wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685993A (en) * | 1995-06-30 | 1997-11-11 | Pitts-Mont Environmental Reclamation Corporation | Apparatus and method for ferrite formation and removal of heavy metal ions by ferrite co-precipitation from aqueous solutions |
| RU2411191C1 (en) * | 2009-07-20 | 2011-02-10 | Федеральное государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный университет (СПбГУ) | Coagulant-adsorbent for cleaning industrial wastes from heavy metals, method of producing coagulant-adsorbent for cleaning industrial wastes from heavy metals and method of using coagulant-adsorbent for cleaning industrial wastes from heavy metals |
| CN102674511A (en) * | 2012-05-02 | 2012-09-19 | 中国科学院生态环境研究中心 | Method for preparing composite flocculant for printing and dyeing wastewater treatment |
| CN102849833A (en) * | 2012-09-28 | 2013-01-02 | 天津莱特化工有限公司 | High performance flocculant for wastewater treatment |
| CN103086489A (en) * | 2013-02-07 | 2013-05-08 | 天津水泥工业设计研究院有限公司 | Method for preparing flocculant polyaluminum ferric chloride from red mud |
-
2013
- 2013-12-02 CN CN201310625503.3A patent/CN103641222A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685993A (en) * | 1995-06-30 | 1997-11-11 | Pitts-Mont Environmental Reclamation Corporation | Apparatus and method for ferrite formation and removal of heavy metal ions by ferrite co-precipitation from aqueous solutions |
| RU2411191C1 (en) * | 2009-07-20 | 2011-02-10 | Федеральное государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный университет (СПбГУ) | Coagulant-adsorbent for cleaning industrial wastes from heavy metals, method of producing coagulant-adsorbent for cleaning industrial wastes from heavy metals and method of using coagulant-adsorbent for cleaning industrial wastes from heavy metals |
| CN102674511A (en) * | 2012-05-02 | 2012-09-19 | 中国科学院生态环境研究中心 | Method for preparing composite flocculant for printing and dyeing wastewater treatment |
| CN102849833A (en) * | 2012-09-28 | 2013-01-02 | 天津莱特化工有限公司 | High performance flocculant for wastewater treatment |
| CN103086489A (en) * | 2013-02-07 | 2013-05-08 | 天津水泥工业设计研究院有限公司 | Method for preparing flocculant polyaluminum ferric chloride from red mud |
Non-Patent Citations (1)
| Title |
|---|
| 陈静等: "赤泥复合剂絮凝处理太湖水华藻与海洋赤潮藻", 《环境工程学报》 * |
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Application publication date: 20140319 |