CN1205131C - Double-machine flocculant - Google Patents
Double-machine flocculant Download PDFInfo
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- CN1205131C CN1205131C CN 03117327 CN03117327A CN1205131C CN 1205131 C CN1205131 C CN 1205131C CN 03117327 CN03117327 CN 03117327 CN 03117327 A CN03117327 A CN 03117327A CN 1205131 C CN1205131 C CN 1205131C
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Abstract
The present invention discloses a water treating agent, particularly a network polymer, the molecular weight of which is between 700000 and 25000000. The network polymer is formed by polymerizing three structural units, wherein one structural unit is formed from plant polyphenol which is modified by Mannich reaction, one structural unit is formed by polymerizing tertiary ammonium salt and an inorganic flocculant, and the other structural unit is formed by polymerizing quaternary ammonium salt and the inorganic flocculant; the plant polyphenol comprises condensate polyphenol and complex polyhenol; the inorganic flocculant is any one of magnesium silicate, ferrous sulfate heptahydrate, aluminium sulfate, ferric trichloride, polymeric ferric sulfate and ferric sulfate containing aluminium. The present invention has the advantages of small adding amount, low cost and good water treating effect, and is applicable to the purification of domestic water, industrial water, waste water, etc., the collection, the separation and the purification of protein, starch and precious metal and the flotation separation of minerals.
Description
Technical field
The present invention relates to a kind of water conditioner, especially relate to a kind of water conditioner that forms by organism and inorganics condensation, be mainly used in the purifying treatment of domestic water, process water and waste water etc., and protein, starch, collection, separation and the purifying of noble metal, mineral floating separate.
Background technology
Flocculation agent has experienced the history in hundreds of years.First on behalf of natural inorganic flocculating agent such as alum etc.; Second on behalf of inorganic salt flocculation agents such as Tai-Ace S 150; The third generation is inorganic polymer flocculant (as poly aluminium chloride, poly-iron) and organic polymer coargulator (as Polyscrylamide, sodium polyacrylate etc.).All need purifying treatment at department's waters such as chemical industry, light industry, metallurgy and mine industry, the flocculation agent of tradition usefulness has iron trichloride, ferrous sulfate, alum, Tai-Ace S 150, poly-aluminium (aluminium chlorohydroxide, basic aluminium sulphate), poly-iron inorganic flocculating agents such as (alkali formula iron(ic) chloride, ferric subsulfates), and organic polymer coargulator such as polyacrylamide, plant polyphenol flocculation agent and contain the composite flocculation agent of organic and inorganic flocculation agent
During inorganic flocculation mainly relies on and the electric charge on the particle and condensing, the organic floculant reaction of then mainly rely on building bridge forms flco and makes particle precipitation.Certainly, theoretical investigation mainly is convenient in this statement, and in fact these two kinds of mechanisms are simultaneous often, is difficult to well-separated.In practice, people usually add in the inorganic flocculating agent earlier and electric charge, add organic flocculation agent again and increase floc sedimentation (alumen ustum) sedimentation, and find that the two unites use and can reduce the consumption of flocculation agent greatly and improve the precipitate and separate effect.But the mode of this secondary dispensing not only is difficult to hold at dosage ratio with on the release time, and has increased initial cost.
The two can effectively be combined as a whole, form the compound of a new generation or claim two-shipper type flocculation agent, become an advanced subject of water treatment science.In recent years, composite flocculant has some reports, and still, the proportioning of organic floculant in inorganic flocculating agent can't surpass 1% all the time,, lose flocculating effect above just producing precipitation.If can not break through this forbidden zone, composite flocculant then can not possess the advantage in practical field.
Along with industrial expansion, require the quality of water high more, adopt at present the most general, effect to be preferably and to add organic flocculation agent earlier, the method that adds inorganic flocculating agent again reaches excellent water treatment effect, dehydration for sedimentary mud, also need add a large amount of flocculating aidss, therefore have shortcomings such as flocculant addition is big, water treatment programs is complicated, cost of water treatment is high, weak effect; Patent Office of the People's Republic of China is that CN1032852C discloses a kind of efficient composite coagulant with the notification number, mainly form by calcium aluminate powder, hydrochloric acid, sulfuric acid, oxygenant and water, though it has water treatment effect preferably, still have the shortcoming that flocculant addition is big, cost of water treatment is high.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art and the flocculation agent that a kind of add-on is little, cost is low, water treatment is effective is provided.
The object of the present invention is achieved like this:
A kind of Double-machine flocculant, the molecular weight that structural unit (1) that is formed by the plant polyphenol after the Mannich reaction modification and the structural unit (2) that is polymerized by tertiary amine salt and inorganic flocculating agent or the structural unit (3) that is polymerized by quaternary ammonium salt and inorganic flocculating agent are formed is the network polymer of 70-2500 ten thousand:
In the formula: R is C
6C
3C
6, C
6C
2C
6, C
6C
1
R
1, R
2, R
3, R
4For carbonatoms is the unsaturated linear alkyl of 12-18;
A is an inorganic flocculating agent.
Wherein, the structural unit shown in (1) formula is the plant polyphenol structural unit of the cationization that made after the Mannich reaction modification by plant polyphenol, and its reaction expression is as follows:
In this step reaction, the N among GTAC reagent (chlorination trimethylammonium Racemic glycidol ammonium) the introduced plant polyphenol R-OH should be greater than 2%, and reacted positive charge density is between 2meq/g～3.2meq/g, and the GTAC transformation efficiency reaches more than 96%.
R is condensation class polyphenol and the complicated polyphenol in the plant polyphenol in the formula; The condensation polyphenol is poly-Flavonol polyphenol, and molecular skeleton is: C
6C
3C
6And C
6C
2C
6, derive from: as if black wattle plant polyphenol, tamarack polyphenol, raise plum polyphenol, rubber polyphenol; Complicated polyphenol is to contain hydrolysis polyphenol and two kinds of structural units of condensation polyphenol in the molecule simultaneously, and molecular skeleton is: C
6C
1And C
6C
3C
6, derive from: narrow leaf oak polyphenol, the plain polyphenol of Quercus acutissima.
Wherein the inorganic salt polymerization is carried out as follows:
Or:
R
1, R
2, R
3, R
4Be C
12～C
18Unsaturated alkyl, X is Cl, I, Br, SO
3, complexing agent is ethylenediamine tetraacetic acid (EDTA) or inferior nitrilotriacetic acid, catalyzer is amino katalaze enzyme or aminomethyl katalaze enzyme.
Synthesizing of Double-machine flocculant:
Or:
R-OH is a plant polyphenol in the formula, R
1R
2R
3N is a tertiary ammonium salt, [R
1R
2R
3R
4N]
+X
-Be quaternary amine, A is inorganic salt.The complexing agent that uses in this reaction is ethylenediamine tetraacetic acid (EDTA) or inferior nitrilotriacetic acid, and the reaction terminating condition reaches for reaction viscosity: 0.038～0.04PaS.
Wherein, the content of A accounts for the 35-99% of Double-machine flocculant total amount, is preferably 45-75%, is more preferably 50-65%, and that best is 55-60%; Inorganic flocculating agent A is Magnesium Silicate q-agent, ferrous sulfate, Tai-Ace S 150, iron trichloride, poly-iron, contain in the aluminium ferric sulfate any one.
The present invention has following advantage with respect to prior art:
In the present invention, contain plant polyphenol through modification, contain a plurality of reaction active groups and reactive sites such as phenolic hydroxyl group, alcoholic extract hydroxyl group, carboxyl in its molecular structure simultaneously, make it that number of chemical reaction can take place, there are nucleophilic center and electrophilic center simultaneously in the polyphenol molecule in addition, therefore nucleophilic reaction and cationoid reaction can take place fully.The molecular structure of plant polyphenol and character, determined the performance and the effect of this flocculation agent to be better than other organic polymer coargulators such as polyacrylamide, also contain inorganic flocculating agent among the present invention in addition, overcome the dispersiveness of plant polyphenol, make it have the characteristics of inorganic flocculating agent simultaneously, possess the speciality of organic floculant again, thereby realized that intensive absorption, bridge formation, adhesion, volume are swept, forceful electric power counteragent and extremely strong complex ability.Because existing hydrophobic grouping in the molecular structure, hydrophilic radical is arranged again, make it to have the water-soluble of excellence, thereby realize flocculation effects such as decolouring, turbidity removal, deodorizing, taste removal, separation filth, precipitating proteins, fiber impurity, xylogen, part metal ion, removal grease and suspended substance.
More popular says: plant polyphenol is used for the most important reason of flocculation agent, is that also itself combines sedimentary characteristic with protein, alkaloid, polysaccharide, phosphatide, anthocyanogen, polyvinyl alcohol, nonionogenic tenside, metal ion etc.This this characteristic has plenty of as far back as the ancient times and promptly has been proved to be, as: the bark high with plant polyphenol content is used for tanning, to remove protein, suppress bacteriophage with the herbal medicine that contains various polyphenol; Have plenty of and just discovered modern age, combine precipitation with multiple metal ions such as Fe, V, Al, Cu, Pb, Zn, Ni, Co, Ca, Ce as polyphenol; Also some then originate from the survival in ancient times in current still in research, as the inhibition conciliation effect to bacterium and microorganism of polyphenol to being had in the middle of wine brewing, food, the medicine.
The present invention compares with traditional flocculation agent, has four big advantages on flocculating effect: the first, and handling same organic sewage and reaching under the same effect condition, the present invention lacks more than 30% than traditional organic or inorganic flocculant dosage, and cost is low more than 20%; Second, handle organic sewage, normal utilization adds organic flocculation agent earlier, the method that adds inorganic flocculating agent again reaches excellent flocculating effect, the present invention then just once adds can reach identical effect, overcome the drawback that secondary adds, and dosage is lower than the dosage sum twice, cost can reduce more than 10%; The 3rd, the mud resistivity that traditional flocculant produces is big, and need add a large amount of coagulant aidss could dewater, and resistivity of the present invention is little, can directly dewater, and has reduced the sludge treatment cost; The 4th, compare with composite flocculant, it is adding less to reach effect same, and cost can reduce more than 10%.
The present invention is mainly used in the purifying treatment of domestic water, process water and waste water etc., and the collection of protein, starch, noble metal, separation and purifying, mineral floating separate.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Will be further understood that the present invention from following illustrative embodiment:
Embodiment 1:
Raw material: black wattle plant polyphenol, tertiary ammonium salt, Magnesium Silicate q-agent, chlorination trimethylammonium Racemic glycidol ammonium, ethylenediamine tetraacetic acid (EDTA).Make the present invention as follows:
1, lixiviate goes out plant polyphenol in the plant, and it is made the cationization plant polyphenol through Mannich reaction;
2, carry out complex reaction with cats product tertiary ammonium salt, inorganic flocculating agent, complexing agent and make tertiary ammonium salt inorganic salt polymkeric substance;
3, the cationization plant polyphenol of gained in above-mentioned 1,2 liang of step, tertiary ammonium salt inorganic salt polymkeric substance are carried out complex reaction and make Double-machine flocculant having under the situation of complexing agent.Specify below:
One, plant polyphenol modification (Mannich reaction):
Adopting the black wattle plant polyphenol is that raw material carries out lixiviate, and the extractive substance that obtains is that structural unit mainly is that the A ring is the former robinetinidin of Resorcinol type, accounts for about 70%; Former fisetinidin accounts for about 25%, and it is that molecular weight is the mixture of 500-3000, and molecular-weight average (number average) is 1250, is equivalent to the tetramer, has " branched chain type " structure, and its representative structure is as follows:
Black wattle plant polyphenol representative structure
The extractive substance of above-mentioned black wattle plant polyphenol is carried out modification, and reaction formula is as follows:
Wherein, R-OH is:
Black wattle plant polyphenol representative structure
In this step reaction, N among GTAC reagent (chlorination trimethylammonium Racemic glycidol ammonium) the introduced plant polyphenol R-OH should be greater than 2%, reacted positive charge density is between 2meq/g～3.2meq/g, and the GTAC transformation efficiency reaches more than 96%, and the amount that R-OH and GTAC reagent add is respectively: 81: 19.
Two, inorganic salt polymerization: tertiary ammonium salt and Magnesium Silicate q-agent are carried out polymerization, undertaken by following reaction formula:
In the formula, R
1R
2R
3NHCl is C
12H
8C
14H
9C
16H
12NHCl, A are Magnesium Silicate q-agent, and complexing agent is an ethylenediamine tetraacetic acid (EDTA), the amount of adding is a total amount: 0.03%, and catalyzer is amino katalaze enzyme, the amount of adding is a total amount: 0.07%, R
1R
2R
3The amount that NHCl and A add is respectively: 12: 88.Three, Double-machine flocculant is synthetic: with plant polyphenol after the above-mentioned modification and R
1R
2R
3NA synthesizes by 63%: 37% weight percent adding container, and the reaction terminating condition reaches for reaction viscosity: 0.038～0.04PaS:
In the formula, complexing agent is an ethylenediamine tetraacetic acid (EDTA), and the amount of adding is a total amount: 0.03%; What obtain is final that thing promptly is the present invention's (Double-machine flocculant), and its molecular weight is 100-200 ten thousand.Magnesium Silicate q-agent accounts for 37% of Double-machine flocculant total amount.
Embodiment 2: raw material: tamarack polyphenol, tertiary ammonium salt, Tai-Ace S 150, chlorination trimethylammonium Racemic glycidol ammonium, inferior nitrilotriacetic acid.Make the present invention by technology among the embodiment 1 and step.
One, plant polyphenol modification (Mannich reaction):
Adopting the tamarack polyphenol is that raw material carries out lixiviate, the extractive substance that obtains is that molecular-weight average is 2800, be equivalent to polymerization degree 9-10, structural unit mainly is the former cyanidin of polymerization, former cyanidin has the A ring of Phloroglucinol type, has the strongest nucleophilicity, simultaneously make C-4 have the strongest Electron Affinities again, therefore very easily condensation and reach the very high polymerization degree, in the tamarack polyphenol molecule, 2, about 6: 4 of 3-position cis and trans unitary ratio, the unit, bottom is made up of catechin, l-Epicatechol, and the two ratio is 8: 2, has " straight chain type " structure.Its representative structure is as follows:
Tamarack polyphenol representative structure
The extractive substance of above-mentioned tamarack polyphenol is carried out modification, and reaction formula is as follows:
Wherein, R-OH is:
Tamarack polyphenol representative structure
In this step reaction, N among GTAC reagent (chlorination trimethylammonium Racemic glycidol ammonium) the introduced plant polyphenol R-OH should be greater than 2%, reacted positive charge density is between 2meq/g～3.2meq/g, and the GTAC transformation efficiency reaches more than 96%, and the amount that R-OH and GTAC reagent add is respectively: 68: 32.
Two, inorganic salt polymerization: tertiary ammonium salt and Tai-Ace S 150 are carried out polymerization, undertaken by following reaction formula:
In the formula, R
1R
2R
3NHCl is C
12H
8C
13H
9C
16H
12NHCl, A are Tai-Ace S 150, complexing agent is a time nitrilotriacetic acid, the amount of adding is a total amount: 0.19%, and catalyzer is the aminomethyl katalaze enzyme, the amount of adding is a total amount: 0.08%, R
1R
2R
3The amount that NHCl and A add is respectively: 13: 87.
Three, Double-machine flocculant is synthetic: with plant polyphenol after the above-mentioned modification and R
1R
2R
3NA synthesizes by 44%: 56% total amount per-cent adding container, and the reaction terminating condition reaches for reaction viscosity: 0.038～0.04PaS:
In the formula, complexing agent is a time nitrilotriacetic acid, and the amount of adding is a total amount: 0.85%; What obtain is final that thing promptly is the present invention's (Double-machine flocculant), and its molecular weight is 70-150 ten thousand.Tai-Ace S 150 accounts for 56% of Double-machine flocculant total amount.
Embodiment 3: raw material: narrow leaf oak polyphenol, quaternary amine, poly-iron, chlorination trimethylammonium Racemic glycidol ammonium, inferior nitrilotriacetic acid.Make the present invention by technology among the embodiment 1 and step.
One, plant polyphenol modification (Mannich reaction):
Adopting narrow leaf oak polyphenol is that raw material carries out lixiviate, and the representative structure of the extractive substance that obtains is as follows:
Narrow leaf oak polyphenol representative structure
The extractive substance of above-mentioned narrow leaf oak polyphenol is carried out modification, and reaction formula is as follows:
Wherein, R-OH is:
Narrow leaf oak polyphenol representative structure
In this step reaction, N among GTAC reagent (chlorination trimethylammonium Racemic glycidol ammonium) the introduced plant polyphenol R-OH should be greater than 2%, reacted positive charge density is between 2meq/g～3.2meq/g, and the GTAC transformation efficiency reaches more than 96%, and the amount that R-OH and GTAC reagent add is respectively: 75: 25.
Two, inorganic salt polymerization: tertiary ammonium salt and poly-iron are carried out polymerization, undertaken by following reaction formula:
In the formula, [R
1R
2R
3R
4N]
+X
-Be [C
12H
8C
13H
9C
16H
12C
18H
14]
+Cl
-, A is poly-iron, and complexing agent is time nitrilotriacetic acid, and the amount of adding is total amount: 0.15%, catalyzer is amino katalaze enzyme, the amount of adding is a total amount: 0.72%, R
1R
2R
3The amount that NHCl and A add is respectively: 19: 81.
Three, Double-machine flocculant is synthetic: with plant polyphenol after the above-mentioned modification and [R
1R
2R
3R
4N]
+A synthesizes by 65%: 35% total amount per-cent adding container, and the reaction terminating condition reaches for reaction viscosity: 0.038～0.04PaS:
In the formula, complexing agent is a time nitrilotriacetic acid, and the amount of adding is a total amount: 3.25%
What obtain is final that thing promptly is the present invention's (Double-machine flocculant), and its molecular weight is 1500-2200 ten thousand.Poly-iron accounts for 35% of Double-machine flocculant total amount.
Using conventional flocculation agent such as Double-machine flocculant of the present invention and poly aluminium chloride to handle the sanitary sewage test contrasts as following table:
Average removal rate %
| Dry point | Index | ||||
| Total row's mouth | Double-machine flocculant | CODcr | BOD 5 | NH 3-N | P(t) |
| 89.42 | 92.16 | 23.32 | 87.33 | ||
| Aluminium chlorohydroxide | 60.28 | 73.27 | 11.27 | 29.06 | |
| Polyoxygenated aluminium | 79.37 | 89.03 | 12.34 | 32.5 | |
| Control doctor district institute from one | Double-machine flocculant | 91.69 | 95.61 | 25.31 | 88.02 |
| Aluminium chlorohydroxide | 41.95 | ||||
| Poly aluminium chloride | 71.26 | 88.55 | 0.95 | 33.56 | |
| The Tibet mansion | Double-machine flocculant | 82.64 | 62.51 | 34.04 | 60.32 |
| Aluminium chlorohydroxide | 55.35 | ||||
| Poly aluminium chloride | 56.76 | ||||
From the experimental analysis data as can be seen, Double-machine flocculant under equal conditions, its CODcr, BOD
5, NH
3-N, P (t) all are better than conventional aluminium chlorohydroxide and poly aluminium chloride, and particularly phosphor-removing effect is obvious, and Double-machine flocculant will reduce by 80% than the trucking costs of poly aluminium chloride etc.
Claims (9)
1, a kind of Double-machine flocculant is that molecular weight that the structural unit (1) that formed by the plant polyphenol after the Mannich reaction modification and the structural unit (2) that is polymerized by tertiary amine salt and inorganic flocculating agent or the structural unit (3) that is polymerized by quaternary ammonium salt and inorganic flocculating agent are polymerized is 70～2,500 ten thousand network polymer:
In the formula: R is that molecular skeleton is C
6C
3C
6Or C
6C
2C
6The condensation polyphenol, or molecular skeleton is C
6C
1And C
6C
3C
6Complicated polyphenol;
R
1, R
2, R
3, R
4For carbonatoms is 12～18 unsaturated linear alkyl.
2, Double-machine flocculant according to claim 1 is characterized in that described inorganic flocculating agent A is Magnesium Silicate q-agent, ferrous sulfate, Tai-Ace S 150, iron trichloride, poly-iron, contains aluminium ferric sulfate.
3, Double-machine flocculant according to claim 1 is characterized in that in (2) formula: R
1Be C
12H
8, R
2Be C
14H
9, R
3Be C
16H
12
4, Double-machine flocculant according to claim 1 is characterized in that in (2) formula: R
1Be C
12H
8, R
2Be C
13H
9, R
3Be C
16H
12
5, Double-machine flocculant according to claim 1 is characterized in that in (3) formula: R
1Be C
12H
8, R
2Be C
14H
9, R
3Be C
16H
12, R
4Be C
18H
14
6, Double-machine flocculant according to claim 1 is characterized in that in (3) formula: R
1Be C
12H
8, R
2Be C
13H
9, R
3Be C
16H
12, R
4Be C
18H
14
7, Double-machine flocculant according to claim 1 and 2 is characterized in that inorganic flocculating agent A accounts for 45～75% of Double-machine flocculant total amount.
8, Double-machine flocculant according to claim 7 is characterized in that inorganic flocculating agent A accounts for 50～65% of Double-machine flocculant total amount.
9, Double-machine flocculant according to claim 8 is characterized in that inorganic flocculating agent A accounts for 55～60% of Double-machine flocculant total amount.
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|---|---|---|---|
| CN 03117327 CN1205131C (en) | 2003-02-21 | 2003-02-21 | Double-machine flocculant |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN 03117327 CN1205131C (en) | 2003-02-21 | 2003-02-21 | Double-machine flocculant |
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|---|---|
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704569B (en) * | 2009-11-19 | 2011-05-04 | 长安大学 | Flocculant for purifying emulsified oil-containing waste water and preparation method thereof |
| CN101935377B (en) * | 2010-07-26 | 2012-06-27 | 北京化工大学 | Method for preparing flocculating agent used for solid-liquid separation treatment of waste drilling fluid |
| CN103041856B (en) * | 2012-12-10 | 2014-09-17 | 中国科学院生态环境研究中心 | Novel adsorption catalyst for nitrogen removal of sewage and preparation method thereof |
| CN103641203A (en) * | 2013-12-17 | 2014-03-19 | 中国林业科学研究院林产化学工业研究所 | COD (Chemical Oxygen Demand) reducer for advanced treatment of chemi-mechanical pulping wastewater and preparation thereof |
| CN105540804B (en) * | 2015-12-21 | 2018-04-13 | 福建师范大学 | A kind of method that cationic flocculant is prepared using oil tea extract |
| CN105540806B (en) * | 2015-12-21 | 2018-04-13 | 福建师范大学 | A kind of preparation method of organic inorganic hybridization flocculant |
| CN109502926A (en) * | 2019-01-02 | 2019-03-22 | 云南正辰环境科技有限公司 | A kind of processing method of high ammonia nitrogen agricultural effluent |
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