CN102674511B - Method for preparing composite flocculant for printing and dyeing wastewater treatment - Google Patents
Method for preparing composite flocculant for printing and dyeing wastewater treatment Download PDFInfo
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- CN102674511B CN102674511B CN 201210134251 CN201210134251A CN102674511B CN 102674511 B CN102674511 B CN 102674511B CN 201210134251 CN201210134251 CN 201210134251 CN 201210134251 A CN201210134251 A CN 201210134251A CN 102674511 B CN102674511 B CN 102674511B
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- red mud
- dyeing wastewater
- flocculation agent
- hydrochloric acid
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Abstract
The invention relates to a method for preparing a composite flocculant for printing and dyeing wastewater treatment. The method comprises the following steps of: 1, grinding magnesium ore and red mud, sieving with a sieve of 100 to 300 meshes, roasting and activating; 2, adding the magnesium ore and the red mud which are activated in step 1 in a mass ratio of 1:(1-20) into a reaction kettle, adding a certain amount of hydrochloric acid, sealing the reaction kettle, preserving heat, maintaining pressure and reacting; and 3, adding calcium aluminate powder into the reaction kettle, mixing, and reacting to obtain the flocculant. By the method, the flocculant which is prepared from the magnesium ore, the red mud and industrial hydrochloric acid contains multiple active flocculation and decolorization ingredients such as aluminum, iron and magnesium, so the flocculant has a good effect of decolorizing reactive dyes, reducing dyes, acid dyes and the like, and particularly has a good decolorization effect and a relatively high chemical oxygen demand (COD) removal rate on alkaline printing and dyeing wastewater; and raw materials such as the magnesium ore and the red mud are cheap, so theproduction cost of the flocculant is low.
Description
Technical field
The present invention relates to a kind of preparation method of composite flocculation agent, relate in particular to a kind of natural magnesium ore deposit, Aluminum red mud and technical hydrochloric acid of utilizing for the preparation of the preparation method of the composite flocculation agent for the treatment of of dyeing wastewater.
Background technology
Dyeing waste water refers to the waste water that the manufacturing procedure of textile products such as cotton, hair, chemical fibre is discharged, dyeing waste water complicated component, organic pollutant content height, biodegradability is relatively poor, colourity is dark, COD and BOD height, change of water quality are big, belongs to difficult degradation, unmanageable trade effluent.Existing coagulating treatment method treatment of dyeing and printing mainly be with single molysite, aluminium salt as chemical floc, exist dosage big, the cost height, floc particle is loose, problems such as settling property difference.
Red mud is the residue that aluminium industry produces, and is cheap.Meanwhile, being rich in more aluminium and iron in the red mud, is the good starting material of preparation flocculation agent, but red mud is regarded as waste residue more and does not obtain utilizing at present, causes the wasting of resources.It is starting material that the present invention adopts natural magnesium ore deposit, red mud, has cheap advantage, and simultaneously, multiple decolouring active principles such as aluminium, iron, magnesium are rich in red mud and magnesium ore deposit after acid is molten, dyeing waste water is had good treatment effect.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of the composite flocculation agent for treatment of dyeing wastewater, solves the decolorizing effect difference problem that the treatment of dyeing wastewater flocculation agent exists.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of preparation method of the composite flocculation agent for treatment of dyeing wastewater, may further comprise the steps: step (1): raw material is prepared: magnesium ore deposit, red mud were ground 100～300 mesh sieves, calcination activation respectively; Step (2): the magnesium ore deposit of step (1) activation and red mud are added in the reactor according to 1: 1～20 mass ratio, add a certain amount of hydrochloric acid, with reactor sealing, insulation, pressurize, reaction; Step 3: add calcium aluminate powder again in the reactor and regulate for the basicity conditioning agent carries out basicity, mix afterreaction, make flocculation agent.
The invention has the beneficial effects as follows: comprise multiple flocculation decoloration active principles such as aluminium, iron, magnesium at the flocculation agent that adopts magnesium ore deposit, red mud, technical hydrochloric acid preparation, therefore reactive dyestuffs, vat, matching stain etc. are all had decolorization preferably, especially waste water of basic printing and dyeing is had decolorizing effect and higher COD clearance preferably; And magnesium ore deposit and the red mud prices of raw and semifnished materials are cheap, so the flocculation agent production cost is low.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described magnesium ore deposit, red mud ground 200 mesh sieves.
Further, the described calcination activation temperature of step (1) is 500～800 ℃; The time of described calcination activation is 1.5-2h.
Further, described magnesium ore deposit is spinel (MgAl
2O
4), sharp brilliant peridotites (SiMg
2O
4), magnesium sulfate heptahydrate (MgSO
47H
2O), rhombspar (CaMg (CO
3)
2), rhodolite (Mg
3Al
2Si
3O
12), magnesite (MgCO
3).
Further, described red mud is Bayer process red mud, red mud from sintering process, mixed combining method red mud.
Further, the described hydrochloric acid of step (1) is industrial concentrated hydrochloric acid, and described industrial concentrated hydrochloric acid adds according to the amount that per 1 ton of magnesium ore deposit and red mud mixture add 2～5 cubic metres of the hydrochloric acid of concentration 30%.
Further, step (1) is preferred, and industrial concentrated hydrochloric acid adds according to the amount that per 1 ton of magnesium ore deposit and red mud mixture add 2 cubic metres of the hydrochloric acid of concentration 30%.
Further, the described holding temperature of step (2) is 140～200 ℃; Dwell pressure is 0.2～1.5548 MPa.
Further, the time of the described reaction of step (2) is 1～10 hour.
Further, the described mixing afterreaction time of step (3) is 0.5～2 hour.
Embodiment
Below principle of the present invention and feature are described, institute only gives an actual example and to be used for explaining the present invention, is not for restriction scope of the present invention.
Embodiment 1
Raw material is prepared: with spinel (MgAl
2O
4), Bayer process red mud ground 200 mesh sieves, 500 ℃ of calcination activation 1.5-2h; Magnesium ore deposit behind the calcination activation and the red mud mass ratio according to 1: 10 is added in the reactor, and the concentration that adds 1 cubic metre of 30% technical hydrochloric acid is 30%; With the reactor sealing, temperature is 200 ℃; Dwell pressure is 1.5548MPa, reacts 3 hours; In reactor, add calcium aluminate powder again, mixed afterreaction 2 hours, make flocculation agent.
Embodiment 2
Raw material is prepared: with the brilliant peridotites (SiMg of point
2O
4), red mud from sintering process ground 200 mesh sieves, 800 ℃ of calcination activations 1.5; Magnesium ore deposit behind the calcination activation and the red mud mass ratio according to 1: 5 is added in the reactor, and the concentration that adds 2 cubic metres of 30% technical hydrochloric acids is 30% technical hydrochloric acid (can add 1～5 cubic metre concentration according to per 1 ton of solid mixture is 30% technical hydrochloric acid); With the reactor sealing, temperature is 170 ℃; Dwell pressure is 0.7920MPa, reacts 8 hours; In reactor, add calcium aluminate powder again, mixed afterreaction 2 hours, make flocculation agent.
Embodiment 3
Raw material is prepared: with magnesium sulfate heptahydrate (MgSO
47H
2O), Bayer process red mud ground 150 mesh sieves, 800 ℃ of calcination activations 1.5; Magnesium ore deposit behind the calcination activation and the red mud mass ratio according to 1: 1 is added in the reactor, and the concentration that adds 5 cubic metres of 30% technical hydrochloric acids is 30% technical hydrochloric acid (can add according to the amount that per 1 ton of magnesium ore deposit and red mud mixture add 1～5 cubic metre of the hydrochloric acid of concentration 30%); With the reactor sealing, temperature is 180 ℃; Dwell pressure is 1.0197MPa, reacts 8 hours; In reactor, add calcium aluminate powder again, mixed afterreaction 2 hours, make flocculation agent.
Embodiment 4
Raw material is prepared: with rhombspar (CaMg (CO
3)
2), Bayer process red mud ground 200 mesh sieves, 750 ℃ of calcination activation 1.8h; Magnesium ore deposit behind the calcination activation and the red mud mass ratio according to 1: 15 is added in the reactor, and the concentration that adds 2 cubic metres of 30% technical hydrochloric acids is 30% technical hydrochloric acid (can add 1～5 cubic metre concentration according to per 1 ton of solid is 30% technical hydrochloric acid); With the reactor sealing, temperature is 150 ℃; Dwell pressure is 0.4760MPa, reacts 5 hours; In reactor, add calcium aluminate powder again, mixed afterreaction 2 hours, make flocculation agent.
Embodiment 5
With rhodolite (Mg
3Al
2Si
3O
12), Bayer process red mud ground 200 mesh sieves, 550 ℃ of calcination activation 2h; Magnesium ore deposit behind the calcination activation and the red mud mass ratio according to 1: 20 is added in the reactor, and the concentration that adds 3 cubic metres of 30% technical hydrochloric acids is 30% technical hydrochloric acid; With the reactor sealing, temperature is 130 ℃; Dwell pressure is 0.2701MPa, reacts 10 hours; In reactor, add calcium aluminate powder again, mixed afterreaction 2 hours, make flocculation agent.
Embodiment 6
With magnesite (MgCO
3), the mixed combining method red mud ground 100 mesh sieves, 500 calcination activations 1.5; Magnesium ore deposit behind the calcination activation and the red mud mass ratio according to 1: 10 is added in the reactor, and the concentration that adds 2 cubic metres of 30% technical hydrochloric acids is 30% technical hydrochloric acid; With the reactor sealing, temperature is 140 ℃; Dwell pressure is 0.3614MPa, reacts 1 hour; In reactor, add calcium aluminate powder again, mixed afterreaction 0.5 hour, make flocculation agent.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included in protection of the present invention.
Claims (10)
1. preparation method who is used for the composite flocculation agent for the treatment of of dyeing wastewater may further comprise the steps:
(1) raw material is prepared: magnesium ore deposit, red mud were ground 100～300 mesh sieves, calcination activation respectively;
(2) in the magnesium ore deposit and the mass ratio adding reactor of red mud according to 1:1～20 with step (1) activation, add a certain amount of hydrochloric acid, with the reactor sealing, insulation, pressurize are reacted;
(3) in reactor, add calcium aluminate powder again, mix afterreaction, make flocculation agent.
2. according to the preparation method of the described composite flocculation agent for treatment of dyeing wastewater of claim 1, it is characterized in that described magnesium ore deposit, red mud ground 200 mesh sieves.
3. according to the preparation method of the described composite flocculation agent for treatment of dyeing wastewater of claim 1, it is characterized in that the described calcination activation temperature of step (1) is 500～800 ℃; The time of described calcination activation is 1.5-2 hour.
4. according to the preparation method of the described composite flocculation agent for treatment of dyeing wastewater of claim 1, it is characterized in that described magnesium ore deposit is spinel (MgAl
2O
4), sharp brilliant peridotites (SiMg
2O
4), magnesium sulfate heptahydrate (MgSO
47H
2O), rhombspar (CaMg(CO
3)
2), rhodolite (Mg
3Al
2Si
3O
12), magnesite (MgCO
3) in any one.
5. according to the preparation method of the described composite flocculation agent for treatment of dyeing wastewater of claim 1, it is characterized in that described red mud is any one in Bayer process red mud, red mud from sintering process, the mixed combining method red mud.
6. according to the preparation method of the described composite flocculation agent for treatment of dyeing wastewater of claim 1, it is characterized in that, the described hydrochloric acid of step (2) is industrial concentrated hydrochloric acid, and described industrial concentrated hydrochloric acid adds according to the amount that per 1 ton of magnesium ore deposit and red mud mixture add 1～5 cubic metre of the hydrochloric acid of concentration 30%.
7. according to the preparation method of the described composite flocculation agent for treatment of dyeing wastewater of claim 6, it is characterized in that described industrial concentrated hydrochloric acid adds according to the amount that per 1 ton of magnesium ore deposit and red mud mixture add 2 cubic metres of the hydrochloric acid of concentration 30%.
8. according to the preparation method of each described composite flocculation agent for treatment of dyeing wastewater of claim 1 to 7, it is characterized in that the described holding temperature of step (2) is 120～200 ℃; Dwell pressure is the 0.2-1.5548 MPa.
9. according to the preparation method of each described composite flocculation agent for treatment of dyeing wastewater of claim 1 to 7, it is characterized in that the time of the described reaction of step (2) is 1～10 hour.
10. according to the preparation method of each described composite flocculation agent for treatment of dyeing wastewater of claim 1 to 7, it is characterized in that the described mixing afterreaction time of step (3) is 0.5～2 hour.
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| CN 201210134251 CN102674511B (en) | 2012-05-02 | 2012-05-02 | Method for preparing composite flocculant for printing and dyeing wastewater treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241997A (en) * | 2016-09-21 | 2016-12-21 | 百色学院 | The preparation method of rock phosphate in powder red mud inulin composite flocculation agent and the method processing sewage |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641222A (en) * | 2013-12-02 | 2014-03-19 | 常熟市雄发针织毛绒有限公司 | Preparation method of composite flocculant for treatment of printing and dyeing wastewater |
| CN103723807A (en) * | 2013-12-04 | 2014-04-16 | 江苏双圆袋鼠服饰有限公司 | Preparation method of flocculating agent for dyeing wastewater treatment |
| CN105906014A (en) * | 2016-06-20 | 2016-08-31 | 江门市江海区炜洁净水材料有限公司 | Production technology for polymeric aluminum magnesium water purifying agent and water purifying method |
| CN107056163A (en) * | 2017-05-19 | 2017-08-18 | 辽宁坚峰实业有限公司 | A kind of method that aluminum oxide industry waste material prepares concrete |
| CN108911070A (en) * | 2018-06-21 | 2018-11-30 | 湖南双晟科技信息咨询有限公司 | A kind for the treatment of of dyeing wastewater composite flocculation agent and preparation method thereof |
| CN110194479A (en) * | 2019-06-12 | 2019-09-03 | 北京博雅合众环保科技有限公司 | A method of aluminium polychloride is prepared using red mud |
| CN117069451A (en) * | 2023-08-17 | 2023-11-17 | 重庆大学溧阳智慧城市研究院 | Method for preparing high-strength 3D printed concrete based on modified antimony tailings |
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| CN1291592A (en) * | 1999-10-11 | 2001-04-18 | 张政德 | Flocculant for clarifying sewage and its preparing process and application |
| CN101665278A (en) * | 2008-09-05 | 2010-03-10 | 中国科学院生态环境研究中心 | Compound phosphorus removal flocculating agent for water treatment |
| CN101665279A (en) * | 2008-09-05 | 2010-03-10 | 中国科学院生态环境研究中心 | Flocculating agent for removing phosphor with low concentration in water |
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2012
- 2012-05-02 CN CN 201210134251 patent/CN102674511B/en active Active
Patent Citations (3)
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|---|---|---|---|---|
| CN1291592A (en) * | 1999-10-11 | 2001-04-18 | 张政德 | Flocculant for clarifying sewage and its preparing process and application |
| CN101665278A (en) * | 2008-09-05 | 2010-03-10 | 中国科学院生态环境研究中心 | Compound phosphorus removal flocculating agent for water treatment |
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Cited By (1)
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| CN106241997A (en) * | 2016-09-21 | 2016-12-21 | 百色学院 | The preparation method of rock phosphate in powder red mud inulin composite flocculation agent and the method processing sewage |
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| CN102674511A (en) | 2012-09-19 |
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