CN105314721A - Preparation method of flocculant for heavy metal wastewater treatment - Google Patents
Preparation method of flocculant for heavy metal wastewater treatment Download PDFInfo
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- CN105314721A CN105314721A CN201510777793.2A CN201510777793A CN105314721A CN 105314721 A CN105314721 A CN 105314721A CN 201510777793 A CN201510777793 A CN 201510777793A CN 105314721 A CN105314721 A CN 105314721A
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Abstract
The invention discloses a preparation method of a flocculant for heavy metal wastewater treatment. The preparation method comprises the following steps: mixing lignin with water, adjusting the pH value of the mixture I to be 10, adding ethanal for stirring, adding triethylene tetramine for heating, and then carrying out heat preservation to obtain a material A; adding a formaldehyde sodium bisulfite addition compound into the material A for a sulfonation reaction, and carrying out filtration and drying to obtain a material B; adding isopropyl alcohol into the material B for uniform mixing and heating, carrying out heat preservation, adding 2,3-epoxypropyltrimethylammonium chloride, adjusting the pH value of the mixture II to be 10, and then carrying out ultrasonic treatment, washing and drying to obtain a material C; mixing the material C, sodium aluminate, polymeric ferric sulfate, zinc nitrate and anionic polyacrylamide to obtain the flocculant. The flocculant obtained according to the preparation method is high in flocculability, has a good effect on removal of heavy metals, and can prevent scale formation.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of preparation method for heavy metal-polluted water treatment flocculant.
Background technology
The discharge of city domestic sewage, causes serious environmental pollution.Due to the complicacy of each industrial and mining enterprises waste component, can containing a large amount of biostats, organic pollutant, heavy metal and materials such as nitrogen, phosphorus in waste water.At present, sewage work adopt the above-mentioned wastewater pollutants of process flocculation agent flocculation and precipitation time all long, and the cost of complex manufacturing, product is high, and it is better for the removal effect of the materials such as biostats, organic pollutant, nitrogen, phosphorus, and poor for the removal effect of the heavy metal contaminants in sewage, and easily cause fouling.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of preparation method for heavy metal-polluted water treatment flocculant, gained flocculation agent flocculating property is good, and removing heavy metals is effective, and can stop fouling.
A kind of preparation method for heavy metal-polluted water treatment flocculant that the present invention proposes, comprises the steps:
S1, by after xylogen and water mixing, regulate pH to 10, then add acetaldehyde and stir, then add triethylene tetramine, heat up, insulation obtains material A;
S2, add sodium hydroxymethane sulfonate carry out sulfonation reaction in material A, filter, drying obtains material B;
S3, add in Virahol mix in material B, heat up, insulation, then add 2,3-epoxypropyltrimethylchloride chloride, regulate pH to 10, then carry out supersound process, washing, drying obtains material C;
S4, material C, sodium aluminate, bodied ferric sulfate, zinc nitrate and anionic polyacrylamide to be mixed to get for heavy metal-polluted water treatment flocculant.
Preferably, in S1, the weight ratio of xylogen and formaldehyde, triethylene tetramine is 90 ~ 100:35 ~ 45:22 ~ 28.
Preferably, in S1, the time of stirring is 2 ~ 3h, and the speed of stirring is 120 ~ 160rpm.
Preferably, in S1, be warming up to 92 ~ 95 DEG C, insulation 2.2 ~ 2.6h.
Preferably, in S2, the temperature of sulfonation reaction is 95 ~ 98 DEG C, insulation 2.3 ~ 2.8h.
Preferably, in S2, the weight ratio of material A and sodium hydroxymethane sulfonate is 122 ~ 125:25 ~ 30.
Preferably, in S3, the weight ratio of material B, Virahol, 2,3-epoxypropyltrimethylchloride chlorides is 110 ~ 115:600 ~ 620:6 ~ 9.
Preferably, in S3, be warming up to 50 ~ 55 DEG C, insulation 1.3 ~ 1.6h.
Preferably, in S3, the time of supersound process is 10 ~ 15min, and the frequency of supersound process is 50 ~ 55kHz, and the power of supersound process is 300 ~ 400w.
Preferably, in S4, the weight ratio of material C, sodium aluminate, bodied ferric sulfate, zinc nitrate and anionic polyacrylamide is 50 ~ 55:25 ~ 28:6 ~ 9:4 ~ 8:16 ~ 20.
The present invention utilizes the phenolic hydroxyl group on lignin molecule and alpha-carbon atom thereof to have stronger reactive behavior, Mannich can be there is with aldehydes, triethylene tetramine to react and generate lignin amine, the triethylene tetramine with chelated metal ions function is grafted on the long-chain of xylogen, thus improves the ability of heavy metals removal further; Then the surfactivity that sulfomethylation improves lignin amine is carried out; Then carry out etherification modified, introduce carboxyl, hydroxyl and NR on sulfomethylation xylogen surface
4 +, improve cationic exchange capacity, while increase branch lengths, its relative molecular mass also increases thereupon, strengthen adsorption bridging ability, flocculating effect strengthens thereupon, and due to the increase of carboxyl, sequestering action can be there is better in heavy metal ion with it, replace proton on its carboxyl and form water-insoluble compound, thus precipitate, and along with the rising of pH value, the negative potential on xylogen surface also increases thereupon, is conducive to and metal cation coordination and chelating; Carrying out supersound process again makes active functional group content increase, further raising surfactivity of the present invention, and etherification modified after xylogen there is hydrophobic grouping and hydrophilic radical simultaneously, wherein hydrophilic radical has stronger adsorption, scale particles in water can be adsorbed on the surface, hydrophobic grouping then arranges outwardly, incrustation scale surface particles surface is wrapped up, hydrophobic grouping band identical charges outwardly, electrostatic repulsion effect can make particle mutually be scattered in the aqueous solution, so just can reduce incrusted deposit, thus reach the object of scale inhibition.
Because inorganic polymer flocculant sodium aluminate, bodied ferric sulfate, zinc nitrate discharge Al by hydrolysis
3+, Fe
3+, Zn
2+complexing group further enhancing flocculation agent positive surface charge, electrical counteract and adsorption bridging effect can be played simultaneously, make material C and sodium aluminate, bodied ferric sulfate, zinc nitrate with the use of, considerably enhance the removal efficiency of etherificate xylogen heavy metal, also compensate for the feature of the present invention to solution ph tolerance difference adding of inorganic polymer flocculant simultaneously, widen the pH value scope of application of the present invention in practice, and material C and anionic polyacrylamide coordinate as polymeric flocculant, not only strengthen flocculating property of the present invention further, material C and anionic polyacrylamide also can to Al simultaneously
3+, Fe
3+, Zn
2+residually serve good restraining effect, far below during single use inorganic polymer flocculant cause the residual of metal ion.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of preparation method for heavy metal-polluted water treatment flocculant that the present invention proposes, comprises the steps:
S1, by weight by after 90 parts of xylogen and water mixing, regulate pH to 10, then add 45 parts of acetaldehyde and carry out stirrings 2h, the speed of stirring is 160rpm, then adds 22 parts of triethylene tetramines, is warming up to 95 DEG C, is incubated 2.2h and obtains material A;
S2, add 25 parts of sodium hydroxymethane sulfonates by weight carry out sulfonation reaction in 125 parts of material A, the temperature of sulfonation reaction is 98 DEG C, insulation 2.3h, and filter, drying obtains material B;
S3, add in 600 parts of Virahols in 115 serving material B and mix by weight, be warming up to 55 DEG C, insulation 1.3h, then add 9 part 2,3-epoxypropyltrimethylchloride chloride, regulate pH to 10, then carry out supersound process, the time of supersound process is 10min, the frequency of supersound process is 55kHz, the power of supersound process is 300w, washing, and drying obtains material C;
S4, by weight 55 serving material C, 25 parts of sodium aluminates, 9 parts of bodied ferric sulfates, 4 parts of zinc nitrates and 20 parts of anionic polyacrylamides to be mixed to get for heavy metal-polluted water treatment flocculant.
Embodiment 2
A kind of preparation method for heavy metal-polluted water treatment flocculant that the present invention proposes, comprises the steps:
S1, by weight by after 100 parts of xylogen and water mixing, regulate pH to 10, then add 35 parts of acetaldehyde and carry out stirrings 3h, the speed of stirring is 120rpm, then adds 28 parts of triethylene tetramines, is warming up to 92 DEG C, is incubated 2.6h and obtains material A;
S2, add 30 parts of sodium hydroxymethane sulfonates by weight carry out sulfonation reaction in 122 parts of material A, the temperature of sulfonation reaction is 95 DEG C, insulation 2.8h, and filter, drying obtains material B;
S3, add in 620 parts of Virahols in 110 serving material B and mix by weight, be warming up to 50 DEG C, insulation 1.6h, then add 6 part 2,3-epoxypropyltrimethylchloride chloride, regulate pH to 10, then carry out supersound process, the time of supersound process is 15min, the frequency of supersound process is 50kHz, the power of supersound process is 400w, washing, and drying obtains material C;
S4, by weight 50 serving material C, 28 parts of sodium aluminates, 6 parts of bodied ferric sulfates, 8 parts of zinc nitrates and 16 parts of anionic polyacrylamides to be mixed to get for heavy metal-polluted water treatment flocculant.
Embodiment 3
A kind of preparation method for heavy metal-polluted water treatment flocculant that the present invention proposes, comprises the steps:
S1, by weight by after 98 parts of xylogen and water mixing, regulate pH to 10, then add 38 parts of acetaldehyde and carry out stirrings 2.6h, the speed of stirring is 130rpm, then adds 26 parts of triethylene tetramines, is warming up to 93 DEG C, is incubated 2.5h and obtains material A;
S2, add 28 parts of sodium hydroxymethane sulfonates by weight carry out sulfonation reaction in 123 parts of material A, the temperature of sulfonation reaction is 96 DEG C, insulation 2.6h, and filter, drying obtains material B;
S3, add in 615 parts of Virahols in 112 serving material B and mix by weight, be warming up to 52 DEG C, insulation 1.5h, then add 7 part 2,3-epoxypropyltrimethylchloride chloride, regulate pH to 10, then carry out supersound process, the time of supersound process is 13min, the frequency of supersound process is 52kHz, the power of supersound process is 380w, washing, and drying obtains material C;
S4, by weight 52 serving material C, 27 parts of sodium aluminates, 7 parts of bodied ferric sulfates, 6 parts of zinc nitrates and 17 parts of anionic polyacrylamides to be mixed to get for heavy metal-polluted water treatment flocculant.
Embodiment 4
A kind of preparation method for heavy metal-polluted water treatment flocculant that the present invention proposes, comprises the steps:
S1, by weight by after 92 parts of xylogen and water mixing, regulate pH to 10, then add 42 parts of acetaldehyde and carry out stirrings 2.2h, the speed of stirring is 150rpm, then adds 24 parts of triethylene tetramines, is warming up to 94 DEG C, is incubated 2.3h and obtains material A;
S2, add 27 parts of sodium hydroxymethane sulfonates by weight carry out sulfonation reaction in 124 parts of material A, the temperature of sulfonation reaction is 97 DEG C, insulation 2.4h, and filter, drying obtains material B;
S3, add in 610 parts of Virahols in 114 serving material B and mix by weight, be warming up to 53 DEG C, insulation 1.4h, then add 8 part 2,3-epoxypropyltrimethylchloride chloride, regulate pH to 10, then carry out supersound process, the time of supersound process is 12min, the frequency of supersound process is 54kHz, the power of supersound process is 350w, washing, and drying obtains material C;
S4, by weight 54 serving material C, 26 parts of sodium aluminates, 8 parts of bodied ferric sulfates, 5 parts of zinc nitrates and 18 parts of anionic polyacrylamides to be mixed to get for heavy metal-polluted water treatment flocculant.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (10)
1. for a preparation method for heavy metal-polluted water treatment flocculant, it is characterized in that, comprise the steps:
S1, by after xylogen and water mixing, regulate pH to 10, then add acetaldehyde and stir, then add triethylene tetramine, heat up, insulation obtains material A;
S2, add sodium hydroxymethane sulfonate carry out sulfonation reaction in material A, filter, drying obtains material B;
S3, add in Virahol mix in material B, heat up, insulation, then add 2,3-epoxypropyltrimethylchloride chloride, regulate pH to 10, then carry out supersound process, washing, drying obtains material C;
S4, material C, sodium aluminate, bodied ferric sulfate, zinc nitrate and anionic polyacrylamide to be mixed to get for heavy metal-polluted water treatment flocculant.
2. according to claim 1 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S1, the weight ratio of xylogen and formaldehyde, triethylene tetramine is 90 ~ 100:35 ~ 45:22 ~ 28.
3. according to claim 1 or 2 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S1, the time of stirring is 2 ~ 3h, and the speed of stirring is 120 ~ 160rpm.
4. according to any one of claim 1-3 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S1, be warming up to 92 ~ 95 DEG C, insulation 2.2 ~ 2.6h.
5. according to any one of claim 1-4 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S2, the temperature of sulfonation reaction is 95 ~ 98 DEG C, insulation 2.3 ~ 2.8h.
6. according to any one of claim 1-5 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S2, the weight ratio of material A and sodium hydroxymethane sulfonate is 122 ~ 125:25 ~ 30.
7. according to any one of claim 1-6 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S3, the weight ratio of material B, Virahol, 2,3-epoxypropyltrimethylchloride chlorides is 110 ~ 115:600 ~ 620:6 ~ 9.
8. according to any one of claim 1-7 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S3, be warming up to 50 ~ 55 DEG C, insulation 1.3 ~ 1.6h.
9. according to any one of claim 1-8 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S3, the time of supersound process is 10 ~ 15min, and the frequency of supersound process is 50 ~ 55kHz, and the power of supersound process is 300 ~ 400w.
10. according to any one of claim 1-9 for the preparation method of heavy metal-polluted water treatment flocculant, it is characterized in that, in S4, the weight ratio of material C, sodium aluminate, bodied ferric sulfate, zinc nitrate and anionic polyacrylamide is 50 ~ 55:25 ~ 28:6 ~ 9:4 ~ 8:16 ~ 20.
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| CN201510777793.2A CN105314721A (en) | 2015-11-12 | 2015-11-12 | Preparation method of flocculant for heavy metal wastewater treatment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967292A (en) * | 2016-05-20 | 2016-09-28 | 张能力 | Flocculating agent for sewage and preparation method thereof |
| CN109020060A (en) * | 2018-08-13 | 2018-12-18 | 佛山市皓信达建设工程有限公司 | Sewage disposal system |
| CN113894135A (en) * | 2020-06-22 | 2022-01-07 | 内蒙古岱海发电有限责任公司 | Method for removing mercury from fly ash and purifying demercuration liquid |
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| CN103641224A (en) * | 2013-12-11 | 2014-03-19 | 山东华亚环保科技有限公司 | Flocculating agent used for slaughter wastewater |
| CN104402166A (en) * | 2014-10-16 | 2015-03-11 | 滁州友林科技发展有限公司 | Industrial sewage treatment process |
| CN104649386A (en) * | 2013-11-20 | 2015-05-27 | 青岛水世界环保科技有限公司 | Flocculant suitable for oil contamination water treatment |
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Patent Citations (3)
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| CN104649386A (en) * | 2013-11-20 | 2015-05-27 | 青岛水世界环保科技有限公司 | Flocculant suitable for oil contamination water treatment |
| CN103641224A (en) * | 2013-12-11 | 2014-03-19 | 山东华亚环保科技有限公司 | Flocculating agent used for slaughter wastewater |
| CN104402166A (en) * | 2014-10-16 | 2015-03-11 | 滁州友林科技发展有限公司 | Industrial sewage treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967292A (en) * | 2016-05-20 | 2016-09-28 | 张能力 | Flocculating agent for sewage and preparation method thereof |
| CN109020060A (en) * | 2018-08-13 | 2018-12-18 | 佛山市皓信达建设工程有限公司 | Sewage disposal system |
| CN113894135A (en) * | 2020-06-22 | 2022-01-07 | 内蒙古岱海发电有限责任公司 | Method for removing mercury from fly ash and purifying demercuration liquid |
| CN113894135B (en) * | 2020-06-22 | 2023-10-24 | 内蒙古岱海发电有限责任公司 | Method for removing mercury from fly ash and purifying mercury-removing liquid |
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Application publication date: 20160210 |
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