CN103043766A - Ferric salt-polyepichlorohydrin-dimethylamine composite flocculant as well as preparation method and application thereof - Google Patents
Ferric salt-polyepichlorohydrin-dimethylamine composite flocculant as well as preparation method and application thereof Download PDFInfo
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- CN103043766A CN103043766A CN201210545556XA CN201210545556A CN103043766A CN 103043766 A CN103043766 A CN 103043766A CN 201210545556X A CN201210545556X A CN 201210545556XA CN 201210545556 A CN201210545556 A CN 201210545556A CN 103043766 A CN103043766 A CN 103043766A
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- molysite
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Abstract
The invention relates to a ferric salt-polyepichlorohydrin-dimethylamine composite flocculant. The composite flocculant is prepared by mixing a ferric chloride solution or a polyferric chloride solution and polyepichlorohydrin-dimethylamine at a normal temperature; the mass concentration of Ferrum in the ferric chloride solution or the polyferric chloride solution is 5-15 g/L; and the mass ratio of the Ferrum in the ferric salt-polyepichlorohydrin-dimethylamine composite flocculant to the polyepichlorohydrin-dimethylamine is (1-10):1. The invention further relates to a preparation method and an application of the ferric salt-polyepichlorohydrin-dimethylamine composite flocculant. The preparation method provided by the invention is simple, convenient, economic and practical, can be widely applied to water supply and waste water treatment in the fields such as dye waste water, surface water, refinery processing wastewater, papermaking, mining and daily-use chemical industry, and has the advantages of simple and fast treatment process as well as good coagulation effect.
Description
Technical field
The present invention relates to a kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent and preparation method thereof and application, belong to environmental chemistry and water-treatment technology field.
Background technology
Coagulation process is to use one of the most general unit in the water treatment process, and the quality of flocculation agent is the deciding factor that affects the water treatment effect.Flocculation agent mainly comprises inorganic and organic floculant two series products.Most popular in the outer water treatment of Now Domestic is aluminium salt and molysite inorganic polymer flocculant.In order to improve the repeating utilization factor of water treatment effect and raising water, performance is more good, range of application is more extensive, meet the NEW TYPE OF COMPOSITE efficient flocculant that contemporary water treatment requires in the urgent need to developing on the basis of existing inorganic polymer flocculant.Thus, in recent years, novel inorganic-development inorganic and inorganic-organic composite flocculating agent has become the hot issue of domestic and international water treatment field research with applied research.The advantage of inorganic polymer flocculant is that it is more excellent than traditional flocculant usefulness, and is more cheap than organic polymer coargulator.But compare with organic polymer coargulator, the molecular weight of inorganic polymer flocculant and flocculation bridge formation ability differ greatly, and use separately to have the shortcomings such as dosage sludge quantity large and that produce is many.Compare with inorganic polymer flocculant, the characteristics such as organic polymer coargulator has that consumption is few, flocculation rate is fast and the sludge quantity that generates is few, but price is higher, uses to be subject to certain limitation.The research of inorganic-organic hybrid type polymeric flocculant becomes people's outline.
Research find composite inorganic-organic polymer coargulator than the single component flocculation agent have that flocculating effect is good, dosage is low, the advantage such as the sludge quantity of applied range, generation is few and easy to use.Boiler contamination is administered in the research and development of composite macromolecular flocculant and water resources comprehensive utilization brings profoundly and changes, and makes water treatment realize more efficient, low consumption, low input.
At present, the inorganic coagulant of widespread use is molysite and aluminium product salt in water treatment.For aluminum salt, the problem that people generally are concerned about is the potential bio-toxicity problem of residual aluminum, and thinks certain dependency that has of residual aluminum and senile dementia in the drinking water treatment.Iron salt coagulant is then thought safety and lifeless matter toxicity, and compares with aluminum salt, has dissolved organic matter in the water body is had the advantages such as removal effect is better, to form alumen ustum large, and coagulating is fast, and sedimentation is fast, and dehydration property is good.Thereby people more and more pay attention to the application of iron salt coagulant in giving water treatment.Although iron salt coagulant has a series of advantage than aluminum salt, but still has larger gap than organic polymer coargulator aspect its adsorption bridging ability, and exist further hydrolysis reaction to cause iron salt coagulant character in water treatment unstable, use separately the shortcomings such as dosage and sludge quantity are larger.
Chinese patent literature CN100343182C(application number: 200610044382.3) disclose a kind of polymerized aluminium-polyepichlorohydrin amine inorganic organic composite coagulator and preparation technology thereof; This preparation technology is with AlCl
36H
2O, polyepichlorohydrin amine are raw material, adopt the method that polyepichlorohydrin amine is incorporated in the PAC solution to be prepared from; The advantages such as this flocculation agent combines that the polyepichlorohydrin amine molecular weight is high, product stability good, strong to the adsorption bridging ability of colloidalmaterial, flocculating effect good, sludge quantity applied widely, that produce is few, and the advantage such as the best dispensing of aluminium salt wide ranges, cost of water treatment be low.But this product belongs to aluminum salt, exists the potential bio-toxicity problem of residual aluminum that people generally are concerned about.
Summary of the invention
Deficiency for existing coagulating agent technology the invention provides a kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, and this composite flocculation agent has good preservation stability and coagulation effect; The present invention also provides preparation method and the application of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent.
Technical scheme of the present invention is as follows:
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, make by mixing under ferric chloride Solution or poly-ferric chloride solution and the polyepichlorohydrin-dimethylamine normal temperature, the mass concentration of iron is 5～15g/L in described ferric chloride Solution or the poly-ferric chloride solution, and the mass ratio of iron and polyepichlorohydrin-dimethylamine is (1～10) in described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent: 1.
According to the present invention, preferred, the mass concentration of iron is 10g/L in described ferric chloride Solution or the poly-ferric chloride solution, and the mass ratio of iron and polyepichlorohydrin-dimethylamine is 2:1 in described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent.
According to the present invention, preferred, the pH of described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent is 2.8～3.9.
According to the present invention, preferred, the basicity of described ferric chloride Solution or poly-ferric chloride solution is 0.4～2.0.
Density under the molysite of the present invention-polyepichlorohydrin-dimethylamine composite flocculation agent, 20 ℃ of temperature is 1.01～1.12, and outward appearance is reddish-brown liquid.
According to the present invention, the preparation method of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, step is as follows:
Take the mass ratio of iron and polyepichlorohydrin-dimethylamine as (1～10): 1 ratio is at room temperature mixed ferric chloride Solution or poly-ferric chloride solution with polyepichlorohydrin-dimethylamine, stirring reaction 55～75min makes molysite-polyepichlorohydrin-dimethylamine composite flocculation agent.
Ferric chloride Solution, poly-ferric chloride solution and polyepichlorohydrin-dimethylamine are conventional commercial product among the present invention.
According to the present invention, preferred ferric chloride Solution makes as follows:
With FeCl
36H
2The O solid is dissolved in distilled water, described FeCl
36H
2The mass volume ratio of O solid and distilled water is (28～31): (700～800) g/mL, magnetic agitation is 10g/L with distilled water diluting to the mass concentration of iron, and get final product to fully dissolving.
According to the present invention, preferred poly-ferric chloride solution makes as follows:
With FeCl
36H
2The O solid is dissolved in distilled water, described FeCl
36H
2The mass volume ratio of O solid and distilled water is (28～31): (300～500) g/mL, and magnetic agitation gets ferric chloride Solution to fully dissolving; Under magnetic agitation, the anhydrous sodium carbonate powder dissolution in distilled water, is got sodium carbonate solution, described anhydrous sodium carbonate powder and FeCl
36H
2The mass ratio of O solid is (4～15): (28～31), and the mass volume ratio of described anhydrous sodium carbonate powder and distilled water is (4～15): (30～60) g/mL; Sodium carbonate solution is dropwise joined in the described ferric chloride Solution with the speed of (3～5) mL/min under magnetic agitation, so that basicity is 0.4～2.0; Behind lather collapse, continue under magnetic agitation, to add stablizer Na
2HPO
412H
2The O powder, described Na
2HPO
412H
2O and FeCl
36H
2The mol ratio of O is 0.08:1; Treat Na
2HPO
412H
2The O powder dissolves rear continuation fully and stirs slaking 1.5～2.5h, and distilled water diluting to the mass concentration of iron is 10g/L, gets poly-ferric chloride solution.
According to the present invention, preferred polyepichlorohydrin-dimethylamine makes as follows:
Under 10 ℃～20 ℃ water bath with thermostatic control, to the dimethylamine solution that with adding massfraction in the four-hole boiling flask of stirring and reflux exchanger is 33%, then turn on agitator cools to below 10 ℃ dimethylamine with ice-water bath, opens afterwards reflux exchanger to the four-hole boiling flask reflux cooling; Dropwise drip epoxy chloropropane with separating funnel with the speed of (27.5～43) mL/h and control temperature in the reactor at 10～20 ℃ under continue stirring, the volume ratio of described epoxy chloropropane and dimethylamine solution is (55～65): (35～45); Epoxy chloropropane dropwises rear adding linking agent and continues and slowly is warming up to 60～75 ℃ under the stirring, and reaction 5～7h namely gets polyepichlorohydrin-dimethylamine; Described linking agent is quadrol, diethylenetriamine, triethylene tetramine or hexanediamine, and the volume ratio of described linking agent and epoxy chloropropane is (2～4): (55～65).
The application of molysite of the present invention-polyepichlorohydrin-dimethylamine composite flocculation is used for sewage disposal as a kind of efficient water treatment agent; Particularly, the water treatment procedure that is used for dye wastewater, simulation surface water and refinery actual waste water; Can also be widely used in the other fields such as papermaking, mining, daily-use chemical industry.
When sewage disposal is used, be added in the staying water molysite of the present invention-polyepichlorohydrin-dimethylamine composite flocculation agent is disposable; Suitable dosage is as follows:
I. in the coagulating sedimentation of dye wastewater was processed, the dosage scope of molysite-polyepichlorohydrin-dimethylamine compound coagulant: the mass concentration with iron was counted 1～100mg/L;
Ii. in the coagulating sedimentation that draws yellow reservoir water was processed, the dosage scope of molysite-polyepichlorohydrin-dimethylamine compound coagulant: the mass concentration with iron was counted 5～70mg/L;
Iii. in the coagulating sedimentation of refinery actual waste water was processed, the dosage scope of molysite-polyepichlorohydrin-dimethylamine compound coagulant: the mass concentration with iron was counted 2～30mg/L.
Molysite of the present invention-polyepichlorohydrin-dimethylamine composite flocculation agent, compare with existing water conditioner and to have following advantage:
Molysite of the present invention-polyepichlorohydrin-dimethylamine composite flocculation agent, belong to novel inorganic organic composite macromolecular flocculation agent in the water treatment field, it is the novel inorganic organic composite macromolecular coagulating agent that grows up on the basis of traditional molysite, be take iron(ic) chloride or poly-ferric chloride, polyepichlorohydrin-dimethylamine as raw material, adopt the method that polyepichlorohydrin-dimethylamine is incorporated in iron(ic) chloride or the poly-ferric chloride solution to be prepared from.The advantages such as this inorganic organic composite macromolecular coagulating agent both combined that the polyepichlorohydrin-dimethylamine positive charge density is high, molecular weight is high, product stability is good, strong to the adsorption bridging ability of colloidalmaterial, coagulation effect good, sludge quantity applied widely, that produce is few, the advantage such as the alumen ustum that combines again iron(ic) chloride or poly-ferric chloride coagulant optimal coagulant dose wide ranges, generation is large, flco is closely knit, sedimentation is fast, dewatering performance of sludge is good, applicable pH range is wide, nontoxic, low price, cost of water treatment are low.Behind polyepichlorohydrin-dimethylamine and inorganic molysite coagulating agent compound use, compare with inorganic coagulant with independent use enteromorpha extract, can significantly improve the treatment effect of traditional inorganic coagulant.
The preparation method of molysite of the present invention-polyepichlorohydrin-dimethylamine composite flocculation agent is simple and direct, economic, practical.Molysite-polyepichlorohydrin-dimethylamine composite flocculation agent can be widely used in feedwater, the wastewater treatment such as fields such as waste water from dyestuff, surface water, oil refinery effluent, papermaking, mining, daily-use chemical industries, and have good coagulation effect.In the water treatment coagulation process, with prepare molysite-the polyepichlorohydrin-dimethylamine composite flocculation agent is disposable is added in the staying water, treating processes is simple, quick.
Embodiment
The present invention will be further described below in conjunction with embodiment, but be not limited to this.The raw material that uses among the embodiment is conventional commercial product.
Embodiment 1
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process is as follows:
(1) takes by weighing 29.02gFeCl
36H
2The O solid adds 300mL distilled water in beaker, magnetic stirrer makes FeCl
36H
2The O solid dissolves to get ferric chloride Solution fully, then continue under magnetic agitation, the anhydrous sodium carbonate powder dissolution of 4.73g is got sodium carbonate solution in (30～60) mL distilled water, and with the speed of (3～5) mL/min sodium carbonate solution is dropwise joined in the ferric chloride Solution, the control basicity is 0.5; Behind lather collapse, continue under magnetic agitation according to Na
2HPO
412H
2O and FeCl
36H
2The O mol ratio is 0.08 ratio adding stablizer Na
2HPO
412H
2The O powder, Na
2HPO
412H
2The O powder dissolves rear continuation fully and stirs slaking 2h, and distilled water diluting to the mass concentration of iron is 10g/L, gets poly-ferric chloride solution, and is for subsequent use;
(2) under 10～20 ℃ water bath with thermostatic control, to 250mL with stir and the four-hole bottle of reflux exchanger in to add massfraction be 33% dimethylamine solution 40mL, turn on agitator, then with ice-water bath dimethylamine is cooled to below 10 ℃, open afterwards reflux exchanger to the four-hole boiling flask reflux cooling; Continuing dropwise to drip the 60mL epoxy chloropropane with separating funnel under the stirring, the control drop rate is that 3～40mL/h strengthens the reflux cooling to four-hole boiling flask simultaneously, makes the temperature in the reactor be controlled at 10～20 ℃; Add the 3mL triethylene tetramine after dropwising as linking agent again, slowly be warming up to 60～75 ℃ under continuing to stir, reaction 6h obtains polyepichlorohydrin-dimethylamine, and is for subsequent use.
(3) under violent magnetic agitation, get poly-ferric chloride solution and the polyepichlorohydrin-dimethylamine that aforesaid method is prepared take the mass ratio of iron and epoxy chloropropane-dimethylamine as the ratio of 2:1 respectively, after at room temperature continuing to stir 60min, namely get molysite-polyepichlorohydrin-dimethylamine composite flocculation agent.
Embodiment 2
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process be with embodiment 1, and different is in the step (1) distilled water diluting to the mass concentration of iron is 5g/L, gets poly-ferric chloride solution, and is for subsequent use.
Embodiment 3
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process be with embodiment 1, and different is in the step (1) distilled water diluting to the mass concentration of iron is 15g/L, gets poly-ferric chloride solution, and is for subsequent use.
Embodiment 4
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process are with embodiment 1, and different is that the basicity of ferric chloride Solution is controlled to be 1.0 in the step (1).
Embodiment 5
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process are with embodiment 1, and different is that the basicity of ferric chloride Solution is controlled to be 1.5 in the step (1).
Embodiment 6
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process be with embodiment 1, and the mass ratio of different is in the step (3) iron and epoxy chloropropane-dimethylamine is 8:1.
Embodiment 7
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process are with embodiment 1, and different is that linking agent is quadrol in the step (2).
Embodiment 8
A kind of molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, preparation process are with embodiment 1, and different is that linking agent is diethylenetriamine in the step (2).
The effect experiment
With the molysite of above-described embodiment 1 preparation-polyepichlorohydrin-dimethylamine composite flocculation agent be applied in respectively the coagulating sedimentation that draws yellow reservoir water process in, the coagulating sedimentation of dye wastewater process in and during the coagulating sedimentation of oil refinery effluent processes, the treatment effect of poly-ferric chloride independent role and poly-ferric chloride-polyepichlorohydrin-dimethylamine compound coagulant relatively.
Application example 1
The molysite of embodiment 1 preparation-disposable being added to of polyepichlorohydrin-dimethylamine composite flocculation agent drawn in the yellow reservoir water water body, and dosage is in the mass concentration of iron.
The raw water quality index of drawing yellow reservoir water is as follows: the pH value is 8.40～8.42, and turbidity is 4.39～4.61NTU, UV
254Be 0.033～0.038cm
-1, DOC is 3.688～3.787mg/L.Result sees Table 1.
Table 1 poly-ferric chloride-polyepichlorohydrin-dimethylamine compound coagulant is processed the effect of drawing yellow reservoir water
From the result of table 1 as can be known, the coagulation effect that yellow reservoir water is drawn in poly-ferric chloride and the compound aftertreatment of polyepichlorohydrin-dimethylamine multipolymer is compared during with the poly-ferric chloride independent role, no matter hang down under dosage or the high dosage and can both obviously improve coagulation effect, especially coagulation effect raising ground is more obvious under low dosage.When being 60mg/L such as dosage, remaining turbidity is still more than 1.0NTU when using poly-ferric chloride separately, but remaining turbidity can drop to 0.70NTU after using compound coagulant; In the dosage scope that experiment is chosen, improve about 10% when the UV254 clearance is than independent use poly-ferric chloride when using compound coagulant in addition.Therefore poly-ferric chloride and polyepichlorohydrin-dimethylamine multipolymer are compound processes the consumption that can reduce poly-ferric chloride for drawing yellow water storehouse water coagulation afterwards, and then reduce cost running cost.
Application example 2
With embodiment 1 preparation molysite-the polyepichlorohydrin-dimethylamine composite flocculation agent is disposable is added in the dye wastewater, dosage is in the mass concentration of iron.
The raw water quality situation of dye wastewater is as follows: the pH value is 8.01～8.42, and reactive dyestuffs concentration is 50mg/L.Result sees Table 2.
The effect of table 2 poly-ferric chloride-polyepichlorohydrin-dimethylamine compound coagulant treatment of simulated waste water from dyestuff
From the result of table 2 as can be known, the coagulation effect of the compound aftertreatment simulation of poly-ferric chloride and polyepichlorohydrin-dimethylamine polymkeric substance Active Red Dye waste water water sample obviously is better than the poly-ferric chloride coagulant independent role in the coagulating treatment of water sample, as under the dosage of 80mg/L, the compound rear clearance to reactive brilliant red of poly-ferric chloride and polyepichlorohydrin-dimethylamine polymkeric substance has improved 20% during than the poly-ferric chloride independent role.
Application example 3
With embodiment 1 preparation molysite-the polyepichlorohydrin-dimethylamine composite flocculation agent is disposable is added in the oil refinery effluent, dosage is in the mass concentration of iron.Result sees Table 3.
The effect of table 3 poly-ferric chloride-polyepichlorohydrin-dimethylamine compound coagulant Treatment of Refinery Wastewater
From the result of table 3 as can be known, the compound aftertreatment oil refinery effluent of poly-ferric chloride and polyepichlorohydrin-dimethylamine polymkeric substance is no matter under low dosage or all can obviously improve the coagulation effect of poly-ferric chloride under the high dosage.After poly-ferric chloride and polyepichlorohydrin-dimethylamine polymkeric substance are compound, in wider scope, the clearance of oily substance can both be improved about 3～5%, the clearance of COD is improved about 20%, therefore can reduce the dosage of inorganic coagulant poly-ferric chloride, have great importance in actual applications.
Claims (9)
1. molysite-polyepichlorohydrin-dimethylamine composite flocculation agent, it is characterized in that, this composite flocculation agent makes by mixing under ferric chloride Solution or poly-ferric chloride solution and the polyepichlorohydrin-dimethylamine normal temperature, the mass concentration of iron is 5～15g/L in described ferric chloride Solution or the poly-ferric chloride solution, and the mass ratio of iron and polyepichlorohydrin-dimethylamine is (1～10) in described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent: 1.
2. molysite according to claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent, it is characterized in that, the mass concentration of iron is 10g/L in described ferric chloride Solution or the poly-ferric chloride solution, and the mass ratio of iron and polyepichlorohydrin-dimethylamine is 2:1 in described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent.
3. molysite according to claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent is characterized in that, the pH of described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent is 2.8～3.9.
4. molysite according to claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent is characterized in that, the basicity of described ferric chloride Solution or poly-ferric chloride solution is 0.4～2.0.
5. molysite according to claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent is characterized in that, described ferric chloride Solution makes as follows:
With FeCl
36H
2The O solid is dissolved in distilled water, described FeCl
36H
2The mass volume ratio of O solid and distilled water is (28～31): (700～800) g/mL, magnetic agitation is 10g/L with distilled water diluting to the mass concentration of iron, and get final product to fully dissolving.
6. molysite according to claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent is characterized in that, described poly-ferric chloride solution makes as follows:
With FeCl
36H
2The O solid is dissolved in distilled water, described FeCl
36H
2The mass volume ratio of O solid and distilled water is (28～31): (300～500) g/mL, and magnetic agitation gets ferric chloride Solution to fully dissolving; Under magnetic agitation, the anhydrous sodium carbonate powder dissolution in distilled water, is got sodium carbonate solution, described anhydrous sodium carbonate powder and FeCl
36H
2The mass ratio of O solid is (4～15): (28～31), and the mass volume ratio of described anhydrous sodium carbonate powder and distilled water is (4～15): (30～60) g/mL; Sodium carbonate solution is dropwise joined in the described ferric chloride Solution with the speed of (3～5) mL/min under magnetic agitation, so that basicity is 0.4～2.0; Behind lather collapse, continue under magnetic agitation, to add stablizer Na
2HPO
412H
2The O powder, described Na
2HPO
412H
2O and FeCl
36H
2The mol ratio of O is 0.08:1; Treat Na
2HPO
412H
2The O powder dissolves rear continuation fully and stirs slaking 1.5～2.5h, and distilled water diluting to the mass concentration of iron is 10g/L, gets poly-ferric chloride solution.
7. molysite according to claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent is characterized in that, described polyepichlorohydrin-dimethylamine makes as follows:
Under 10 ℃～20 ℃ water bath with thermostatic control, to the dimethylamine solution that with adding massfraction in the four-hole boiling flask of stirring and reflux exchanger is 33%, then turn on agitator cools to below 10 ℃ dimethylamine with ice-water bath, opens afterwards reflux exchanger to the four-hole boiling flask reflux cooling; Dropwise drip epoxy chloropropane with separating funnel with the speed of (27.5～43) mL/h and control temperature in the reactor at 10～20 ℃ under continue stirring, the volume ratio of described epoxy chloropropane and dimethylamine solution is (55～65): (35～45); Epoxy chloropropane dropwises rear adding linking agent and continues and slowly is warming up to 60～75 ℃ under the stirring, and reaction 5～7h namely gets polyepichlorohydrin-dimethylamine; Described linking agent is quadrol, diethylenetriamine, triethylene tetramine or hexanediamine, and the volume ratio of described linking agent and epoxy chloropropane is (2～4): (55～65).
8. the preparation method of molysite claimed in claim 1-polyepichlorohydrin-dimethylamine composite flocculation agent, step is as follows:
Take the mass ratio of iron and polyepichlorohydrin-dimethylamine as (1～10): 1 ratio is at room temperature mixed ferric chloride Solution or poly-ferric chloride solution with polyepichlorohydrin-dimethylamine, stirring reaction 55～75min makes molysite-polyepichlorohydrin-dimethylamine composite flocculation agent.
9. the application of each described molysite-polyepichlorohydrin-dimethylamine composite flocculation agent of claim 1～7, the coagulating sedimentation that be applied to dye wastewater, draws yellow reservoir water or refinery actual waste water is processed, and is added in the staying water molysite-polyepichlorohydrin-dimethylamine composite flocculation agent is disposable;
I. in the coagulating sedimentation of dye wastewater was processed, the dosage scope of molysite-polyepichlorohydrin-dimethylamine compound coagulant: the mass concentration with iron was counted 1～100mg/L;
Ii. in the coagulating sedimentation that draws yellow reservoir water was processed, the dosage scope of molysite-polyepichlorohydrin-dimethylamine compound coagulant: the mass concentration with iron was counted 5～70mg/L;
Iii. in the coagulating sedimentation of refinery actual waste water was processed, the dosage scope of molysite-polyepichlorohydrin-dimethylamine compound coagulant: the mass concentration with iron was counted 2～30mg/L.
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| CN110921753A (en) * | 2019-11-04 | 2020-03-27 | 广州振清环保技术有限公司 | Ternary graft copolymerization modified spirulina protein water clarifying agent and preparation method thereof |
| CN111253002A (en) * | 2020-01-19 | 2020-06-09 | 贝嘉美(天津)生物技术研发股份有限公司 | Water body blue algae treating agent and preparation method and application thereof |
| CN114195237A (en) * | 2021-11-25 | 2022-03-18 | 湖北中烟工业有限责任公司 | Flocculating agent for treating organic waste water of tobacco and preparation method thereof |
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