CN105293663A - Magnetic coagulant for sewage treatment - Google Patents
Magnetic coagulant for sewage treatment Download PDFInfo
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- CN105293663A CN105293663A CN201510830137.4A CN201510830137A CN105293663A CN 105293663 A CN105293663 A CN 105293663A CN 201510830137 A CN201510830137 A CN 201510830137A CN 105293663 A CN105293663 A CN 105293663A
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- methyl alcohol
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Abstract
The present invention discloses a magnetic coagulant for sewage treatment, wherein the required raw materials comprise FeCl3.6H2O, FeSO4.7H2O, triton X-100, 3-aminopropyl trimethoxysilane, 98% polyethylene imine, a 25% glutaraldehyde solution, ammonia water, absolute alcohol, methanol, and distilled water. The magnetic coagulant has the following significant advantages that the coagulation treatment process is efficient, and the rapid coagulation precipitate separation can be achieved.
Description
Technical field
The invention belongs to coagulating agent field, particularly relate to a kind of sewage disposal magnetic coagulating agent.
Background technology
The present invention is directed to traditional coagulating agent to exist in sewage disposal such as: the deficiencies such as removal efficiency is low, separability is poor, invent a kind of processing method for the preparation of novel coagulant.When water pollutant is removed in the novel coagulant application that this method is prepared, have removal efficiency high, can the advantage such as sharp separation.Overcome the deficiency that traditional coagulating agent exists, for sewage disposal provides a kind of new solution.
The particulate matter existed in sewage mainly colloid, water-borne glue grain maintains stable dispersion suspension state due to the interaction energy of the ∫ current potential of micelle.The effect of coagulating agent is mainly eliminated or is reduced the ∫ current potential of micelle, makes that particle collision is coalescent, loss of stability.When tradition coagulating agent is used for sewage disposal, there is the too low treatment effect of dosage not obvious; Be separated to again when dosage is too high coagulating sedimentation thing and bring troublesome puzzlement.
Summary of the invention
For the above-mentioned technical problem that traditional coagulating agent exists, the invention provides a solution, During Coagulation Process can be made more efficient, realize coagulating sedimentation thing sharp separation.Concrete technical solution is: adopt FeCl
3`6H
2o, FeSO
4`7H
2the reagent such as O, triton x-100,3-aminopropyl trimethoxysilane, 98% polyethylenimine solution, 25% glutaraldehyde solution first obtain magnetic coagulant materials under proper condition; Comparative analysis coagulating agent removal efficiency influence factor by experiment, obtains magnetic coagulating agent Best.
Novel magnetic coagulating agent preparation process is as follows:
A kind of sewage disposal magnetic coagulating agent, it is characterized in that, preparation method comprises the following steps:
(1) FeSO is taken according to mol ratio 1:1.7-1.8
4`7H
2o and FeCl
3`6H
2o, joins in reaction flask, adds excessive strong aqua, and concussion about 20min, is placed in water-bath water-bath about the 6h of about 60 DEG C, then washs Armco magnetic iron fully with distilled water, obtain purer Magnetic nano iron particle;
(2) mixed aqueous solution of Triton-x-100 and methyl alcohol is prepared, Triton-x-100: methyl alcohol: the mol ratio of water is 1:9-11:19-21, add purer Magnetic nano iron particle and the TEOS of step (1) gained wherein successively, two kinds of material add-ons are 0.9-1.1mg/L, a small amount of strong aqua is added again in above-mentioned mixed solution, the volume ratio of strong aqua and mixed solution is 1:9-11, be placed in mixing vibration 3.8-4.2h on vibration shaking table, after liquid to be mixed reacts completely, reaction solution is used acetone breakdown of emulsion, the Armco magnetic iron of silanization will be obtained after embedding product distilled water and the repeated multiple times washing of ethanol,
(3) it is in the glutaraldehyde solution of about 25% that the silanization Armco magnetic iron obtained in (2) adds concentration, using the aqueous solution of methyl alcohol at the bottom of reactive group, add appropriate ammoniacal liquor or phosphate buffer soln, the pH of reaction system is made to remain on about 7.8, after 0.8-1.2h concussion is placed on and reacts 5.5-6.5h in the water-bath of 40-50 DEG C, must comparatively pure material with the abundant detergent of water;
(4) the comparatively pure material that (3) obtain is added in polymine highly concentrated solution, using the aqueous solution of methyl alcohol at the bottom of reactive group, add appropriate ammoniacal liquor or phosphate buffer soln, the pH of reaction system is made to remain on about 7.8, shake through 0.8-1.2h again, be placed on after reacting about 6h in about 45 DEG C water-baths, obtain finished product with the abundant detergent of water.
Described a kind of sewage disposal magnetic coagulating agent, it is characterized in that, the reaction flask volume described in step (1) is 100mL.
Described a kind of sewage disposal magnetic coagulating agent, is characterized in that, the concentration of described polymine highly concentrated solution is 97-99%.
Described a kind of sewage disposal magnetic coagulating agent, is characterized in that, methyl alcohol and water volume ratio 2.2-1.8:1 in the aqueous solution of described methyl alcohol.
Beneficial effect of the present invention is:
(1) of the present invention using Magnetic nano iron as carrier, undertaken modifying the novel coagulant having obtained and there is magnetic and enrich polymer side chain by crosslinked glutaraldehyde, grafting polymine.This magnetic coagulating agent has higher processing efficiency being applied to the sharp separation that can realize coagulating sedimentation and supernatant liquor in stain disease process simultaneously.
(2) of the present inventionly novel nano-material is prepared correlation technique be applied to sewage treatment area, the deficiency that overcomes that the separable degree that traditional flocculant product exists is poor, removal efficiency is on the low side etc., the effect of the finished product is: by the test of simulation mud-water separation, when not adding coagulating agent, 70min reaches mud-water separation balance, and coagulation clearance reaches 49%; When adding novel magnetic coagulating agent by 0.725g/L, 30min reaches balance, and speed of reaction is very fast, and after magnetic resolution, coagulation clearance reaches 95%.
Accompanying drawing explanation
Fig. 1 is preparation flow figure of the present invention.
Embodiment
In conjunction with example and Fig. 1, this novel coagulant result of use is described.
A kind of sewage disposal magnetic coagulating agent, it is characterized in that, preparation method comprises the following steps:
(1) FeSO is taken according to mol ratio 1:1.75
4`7H
2o and FeCl
3`6H
2o, joins in 100ml reaction flask, adds excessive strong aqua, and concussion 20min, is placed in the water-bath water-bath 6h of 60 DEG C, then washs Armco magnetic iron fully with distilled water, obtain purer Magnetic nano iron particle;
(2) mixed aqueous solution of Triton-x-100 and methyl alcohol is prepared, Triton-x-100: methyl alcohol: the mol ratio of water is 1:10:20, add purer Magnetic nano iron particle and the TEOS of step (1) gained wherein successively, two kinds of material add-ons are 1mg/L, in above-mentioned mixed solution, add proper ammonia be again placed in mixing vibration 4h on vibration shaking table, after liquid to be mixed reacts completely, reaction solution is used acetone breakdown of emulsion, the Armco magnetic iron of silanization will be obtained after embedding product distilled water and the repeated multiple times washing of ethanol;
(3) it is in the glutaraldehyde solution of 25% that the silanization Armco magnetic iron obtained in (2) adds concentration, using the aqueous solution of methyl alcohol at the bottom of reactive group, add appropriate ammoniacal liquor or phosphate buffer soln, the pH of reaction system is made to remain on 7.8, after 1h concussion is placed on and reacts 6h in the water-bath of 45 DEG C, must comparatively pure material with the abundant detergent of water;
(4) what (3) obtained adds in the polymine highly concentrated solution of 98% compared with pure material, using the aqueous solution of methyl alcohol at the bottom of reactive group, add appropriate ammoniacal liquor or phosphate buffer soln, the pH of reaction system is made to remain on 7.8, shake through 1h again, abundant concussion obtains finished product with the abundant detergent of water after being placed on and reacting 6h in 45 DEG C of water-baths.
Methyl alcohol and water volume ratio 2:1 in the aqueous solution of methyl alcohol.
Experiment 1
Adopt the suspended substance in dust simulation stain disease, take 0.26mg dust and add distilled water and be settled to 16ml.Take 1.16mg finished product magnetic coagulating agent to add distilled water and stir and be settled to 200 μ l.
Configuration gained coagulant solution is joined in the muddy water suspension liquid of 16ml, is slowly uniformly mixed.
Use magnet adsorption to remove coagulation flocks after hybrid reaction 15min, use filter paper filtering supernatant liquor to record suspension particles thing content Q contained by supernatant liquor, namely the corresponding removal amount of coagulating agent obtains as 0.26-Q.
Experiment 2
Take 0.26mg dust to add distilled water and be settled to 16ml.Take 2.32mg finished product magnetic coagulating agent to add distilled water and stir and be settled to 200 μ l.
Configuration gained coagulant solution is joined in the muddy water suspension liquid of 16ml, is slowly uniformly mixed.
Use magnet adsorption to remove coagulation flocks after hybrid reaction 15min, use filter paper filtering supernatant liquor to record suspension particles thing content Q contained by supernatant liquor, namely the corresponding removal amount of coagulating agent obtains as 0.26-Q.
Experiment 3
Take 0.26mg dust to add distilled water and be settled to 16ml.Take 4.64mg finished product magnetic coagulating agent to add distilled water and stir and be settled to 200 μ l.
Configuration gained coagulant solution is joined in the muddy water suspension liquid of 16ml, is slowly uniformly mixed.
Use magnet adsorption to remove coagulation flocks after hybrid reaction 15min, use filter paper filtering supernatant liquor to record suspension particles thing content Q contained by supernatant liquor, namely the corresponding removal amount of coagulating agent obtains as 0.26-Q.
Experiment 4
Take 0.26mg dust to add distilled water and be settled to 16ml.Take 5.8mg finished product magnetic coagulating agent and add steaming
Heat up in a steamer water to stir and be settled to 200 μ l.
Configuration gained coagulant solution is joined in the muddy water suspension liquid of 16ml, is slowly uniformly mixed.
Use magnet adsorption to remove coagulation flocks after hybrid reaction 15min, use filter paper filtering supernatant liquor to record suspension particles thing content Q contained by supernatant liquor, namely the corresponding removal amount of coagulating agent obtains as 0.26-Q.
Experiment 5
Take 0.26mg dust to add distilled water and be settled to 16ml.Take 11.6mg finished product magnetic coagulating agent to add distilled water and stir and be settled to 200 μ l.
Configuration gained coagulant solution is joined in the muddy water suspension liquid of 16ml, is slowly uniformly mixed.
Use magnet adsorption to remove coagulation flocks after hybrid reaction 15min, use filter paper filtering supernatant liquor to record suspension particles thing content Q contained by supernatant liquor, namely the corresponding removal amount of coagulating agent obtains as 0.26-Q.
Table 1 is each experiment coagulation effect monitoring data, and muddy water suspension liquid particulate matter removal amount increases with sorbent material dosage and increases as can be seen from Table 1, and the corresponding clearance of unit sorbent material presents first increases and then decreases trend.Under specified criteria, magnetic adsorbent optimum dosage is 5.8mg.
Table 1 is experiment coagulation effect monitoring data respectively
Claims (4)
1. a sewage disposal magnetic coagulating agent, it is characterized in that, preparation method comprises the following steps:
(1) FeSO is taken according to mol ratio 1:1.7-1.8
4`7H
2o and FeCl
3`6H
2o, joins in reaction flask, adds excessive strong aqua, and concussion about 20min, is placed in water-bath water-bath about the 6h of about 60 DEG C, then washs Armco magnetic iron fully with distilled water, obtain purer Magnetic nano iron particle;
(2) mixed aqueous solution of Triton-x-100 and methyl alcohol is prepared, Triton-x-100: methyl alcohol: the mol ratio of water is 1:9-11:19-21, add purer Magnetic nano iron particle and the TEOS of step (1) gained wherein successively, two kinds of material add-ons are 0.9-1.1mg/L, a small amount of strong aqua is added again in above-mentioned mixed solution, the volume ratio of strong aqua and mixed solution is 1:9-11, be placed in mixing vibration 3.8-4.2h on vibration shaking table, after liquid to be mixed reacts completely, reaction solution is used acetone breakdown of emulsion, the Armco magnetic iron of silanization will be obtained after embedding product distilled water and the repeated multiple times washing of ethanol,
(3) it is in the glutaraldehyde solution of about 25% that the silanization Armco magnetic iron obtained in (2) adds concentration; using the aqueous solution of methyl alcohol at the bottom of reactive group; add appropriate ammoniacal liquor or phosphate buffer soln; the pH of reaction system is made to remain on about 7.8; after 0.8-1.2h concussion is placed on and reacts 5.5-6.5h in the water-bath of 40-50 DEG C, must comparatively pure material with the abundant detergent of water;
(4) the comparatively pure material that (3) obtain is added in polymine highly concentrated solution, using the aqueous solution of methyl alcohol at the bottom of reactive group, add appropriate ammoniacal liquor or phosphate buffer soln, the pH of reaction system is made to remain on about 7.8, shake through 0.8-1.2h again, be placed on after reacting about 6h in about 45 DEG C water-baths, obtain finished product with the abundant detergent of water.
2. a kind of sewage disposal magnetic coagulating agent according to claim 1, it is characterized in that, the reaction flask volume described in step (1) is 100mL.
3. a kind of sewage disposal magnetic coagulating agent according to claim 1, is characterized in that, the concentration of described polymine highly concentrated solution is 97-99%.
4. a kind of sewage disposal magnetic coagulating agent according to claim 1, is characterized in that, methyl alcohol and water volume ratio 2.2-1.8:1 in the aqueous solution of described methyl alcohol.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835231A (en) * | 2022-06-30 | 2022-08-02 | 北京博泰至淳生物科技有限公司 | Nano flocculant for realizing in-situ energy expansion and preparation method thereof |
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2015
- 2015-11-24 CN CN201510830137.4A patent/CN105293663A/en active Pending
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| KR100878350B1 (en) * | 2007-08-29 | 2009-01-15 | 한국화학연구원 | Continuous removing apparatus and method of algaes and nutrient salts by using potential difference method |
| CA2750648C (en) * | 2010-08-30 | 2015-09-15 | Hitachi, Ltd. | Water purification method, coagulant, water purifying apparatus and oil extracting system using the apparatus |
| CN102206624A (en) * | 2011-04-15 | 2011-10-05 | 北京师范大学 | Magnetic composite microsphere immobilized laccase and preparation method thereof |
| CN102552945A (en) * | 2012-01-19 | 2012-07-11 | 青岛科技大学 | Surface modification method of magnetic iron oxide nano-particles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114835231A (en) * | 2022-06-30 | 2022-08-02 | 北京博泰至淳生物科技有限公司 | Nano flocculant for realizing in-situ energy expansion and preparation method thereof |
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Application publication date: 20160203 |
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