CN102765790A - Preparation method of inorganic-organic composite coagulant - Google Patents
Preparation method of inorganic-organic composite coagulant Download PDFInfo
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- CN102765790A CN102765790A CN2012102758448A CN201210275844A CN102765790A CN 102765790 A CN102765790 A CN 102765790A CN 2012102758448 A CN2012102758448 A CN 2012102758448A CN 201210275844 A CN201210275844 A CN 201210275844A CN 102765790 A CN102765790 A CN 102765790A
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Abstract
The invention relates to a preparation method of an inorganic-organic composite coagulant, which comprises the following steps: inorganic matters AlCl3 and/or FeCl3 are dissolved in distilled water, and added with Na2CO3 to allow degree of alkalization to be 0.5-2.0; when Na2CO3 is dissolved in water, dimethyl diallyl ammonium chloride homopolymer is added in the solution according to that the mass ratio of Al and/or Fe to dimethyl diallyl ammonium chloride homopolymer is (4-8):1; and the homopolymer is mixed with the solution uniformly, and reacted for 1-3h to obtain the inorganic-organic composite coagulant. The inorganic-organic composite coagulant provided by the invention is prepared by taking AlCl3, FeCl3, Na2CO3, NaH2PO4 and PDMDAAC (poly dimethyl diallyl ammonium chloride) as main raw materials, has the characteristics of low dose, strong electric neutralizing capacity, large molecular weight and little sludge amount when being used, and has better treatment effect on the algae-containing raw water.
Description
Technical field
The present invention relates to a kind of inorganic-preparation method of organic compound coagulant, particularly a kind of preparation method who is used to contain inorganic-organic compound coagulant of the former water treatment of algae belongs to environment and technical field of chemistry.
Background technology
Coagulation is the agglomeration process of water-borne glue body particle and small suspended substance.Coagulation comprises the cohesion and two aspects of flocculating, and cohesion is meant the steady process of taking off of water-borne glue body, and flocculation is meant the steady agglomeration of particles process of taking off.Coagulation is one of most important technology in water and the wastewater treatment, and its treatment effect has determined the operation condition of subsequent technique, and effluent quality and running cost are had bigger influence.In decades in the past, the research of coagulation technology mainly concentrates on coagulation chemistry, coagulation physics and coagulation process and learns three aspects.Along with theoretical constantly perfect of coagulation, research focus in recent years turns to the exploitation of all kinds of coagulants and the aspects such as control of use, coagulating process and condition gradually.
The research and development of novel coagulating agent are the research focuses of water treatment field, its total development trend be from low molecule to polymer, single type to compound, single functional type to multifunctional type.According to the chemical ingredients of coagulating agent, can it be divided into inorganic coagulant, organic polymer coargulator, compound coagulant and microbial flocculant.Inorganic polymer coagulant have suitability good, to characteristics such as the growth of the applied widely and flco of water temperature and pH are fast, its main drawback is that the mud generation is big.The advantage of organic polymer coargulator is adding less, and shortcoming is that cost is high.Inorganic-organic compound coagulant is to pass through to take place physical-chemical reaction before use by inorganic coagulant and organic polymer coargulator; A kind of stable prod that forms; Have stronger charge neutrality ability and adsorption bridging ability, can bring into play the synergy of two kinds of components, improve coagulation effect.
Because industrial and agricultural production makes in the surface water the concentrating of nutrients such as nitrogen phosphorus increase, and causes algal bloom under optimum conditions easily, causes water pollution incidents such as wawter bloom, causes the rapid deterioration of water quality, influences the functions of use of surface water.In addition, in water technology, the algae too high levels can reduce deposition efficiency, stops up the filter tank, causes effluent quality to worsen.Water factory extensively adopts coagulation-filtration-sterilization conventional processes at present, and used coagulating agent is an inorganic coagulant, and this technology has removal effect preferably to turbidity, but not good to the removal effect of organism and algae.To above problem, when processing contains the former water of algae, adopt novel coagulating agent, can under the prerequisite that does not change existing technology, improve the algae removal rate, improve effluent quality, have good economy, society and Significance for Environment.
Chinese patent document CN101985373A (application number 201010566885.3) and Chinese patent document CN102276036A (application number 201110210583.7) adopt raw materials such as water glass, iron trichloride and mineral acid; Make polymeric silicicacid class inorganic coagulant, can effectively remove frustule.Chinese patent CN101054222 (CN200710020777.4) then adopts flyash, ultrapure magnetite powder and concentrated hydrochloric acid to process compound magnetic flocculation agent, is used for the processing of algal tufa.More than invention is the inorganic compounding coagulating agent, when processing contains the former water of algae, still has the high problem of dosage.
Summary of the invention
The present invention is directed to the deficiency of prior art, provide a kind of inorganic-preparation method of organic compound coagulant.
Terminological interpretation
Basicity: basicity refers to degree of hydroxylation, is the ratio of hydroxyl equivalent and the equivalent of aluminium and/or iron in Poly aluminum Chloride (PAC), poly-ferric chloride or the aluminium iron polychloride.
Technical scheme of the present invention is following:
A kind of inorganic-preparation method of organic composite coagulator, comprise the steps:
With inorganics AlCl
3And/or FeCl
3Be dissolved in the zero(ppm) water, add Na
2CO
3Making basicity is 0.5~2.0, treats Na
2CO
3After the dissolving; According to Al and/or Fe element and dimethyl diallyl ammonium chloride homopolymer (PDMDAAC) mass ratio is (4~8): 1 ratio adds the dimethyl diallyl ammonium chloride homopolymer; Mix under the normal temperature, reaction 1~3h makes inorganic-organic composite coagulator.
Preferred according to the present invention, said inorganics is FeCl
3Perhaps AlCl
3With FeCl
3Mixing the time, treat Na
2CO
3After the dissolving, also comprise adding stablizer NaH
2PO
4Step; Further preferred, said Fe element and NaH
2PO
4The mass ratio of middle P element is 25: (1~3).
Preferred according to the present invention, said inorganics is AlCl
3With FeCl
3Mixing the time, the mol ratio of Al element and Fe element is (3~11): 1.
Preferred according to the present invention, said inorganics is AlCl
3The time, add Na
2CO
3Making basicity is 1.0~2.0; Said inorganics is FeCl
3Perhaps AlCl
3With FeCl
3Mixing the time, add Na
2CO
3Making basicity is 0.5~1.5.
When to AlCl
3Solution, FeCl
3Solution or AlCl
3And FeCl
3Add Na in the mixing solutions
2CO
3The time, can produce Poly aluminum Chloride (PAC), poly-ferric chloride or aluminium iron polychloride.
When inorganics is AlCl
3The time, the inorganic-organic composite coagulator that makes is colourless liquid, wherein Al
2O
3Mass content be 9.4~10.5%; When inorganics is AlCl
3And FeCl
3The time, the inorganic-organic composite coagulator that makes is light brown liquid, wherein Al
2O
3And Fe
2O
3Mass content be 8.2~10.0%; When inorganics is FeCl
3The time, the inorganic-organic composite coagulator that makes is brown liquid, wherein Fe
2O
3Mass content be 5.8~7.1%.
Beneficial effect
Of the present invention inorganic-organic compound coagulant is with AlCl
3, FeCl
3, Na
2CO
3, NaH
2PO
4With PDMDAAC be that main raw material makes, have the characteristics that dosage is low, the charge neutrality ability is strong, molecular weight is big and sludge quantity is few during use, to containing the former glassware for drinking water of algae treatment effect is preferably arranged.
Embodiment
Raw material sources
AlCl
3: available from Chemical Reagent Co., Ltd., Sinopharm Group, composition is AlCl
36H
2O, purity is analytical pure;
FeCl
3: available from Tianjin Da Mao chemical reagent factory, composition is FeCl
36H
2O, purity is analytical pure;
Poly Dimethyl Diallyl Ammonium Chloride: english abbreviation PDMDAAC, available from Binzhou, Shandong Jia Yuan environmental protection company, purity is CP, and solid content is 40.0wt%, and viscosity is 1.20mL/g;
Other reagent is commercially available prod commonly used, this area.
Detection method
The detection method of specific conductivity adopts GB/T 27502-2011 among the embodiment; The detection method of turbidity adopts GB/T13200-1991; The detection method of dissolved organic carbon adopts ISO 8245-1999; The chlorophyll-a content detecting method adopts GB/T 22182-2008.
Embodiment 1
The preparation method of polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent, step is following:
Take by weighing the AlCl of 44.17g
36H
2The O solid adds dissolved in distilled water in beaker, make AlCl
3Solution;
Take by weighing the anhydrous Na of 19.63g
2CO
3, under agitation condition to AlCl
3Add Na in the solution
2CO
3, treat lather collapse after, add the 6.25g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 2.0, Al
2O
3Content is the polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of 18.89g/L.
Embodiment 2
Like embodiment 1 described preparation method, difference is, adds the 3.12g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continues then to stir 3h, is settled to 500mL with zero(ppm) water then, and making basicity is 2.0, Al
2O
3Content is the polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of 18.89g/L.
Embodiment 3
The preparation method of poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent, step is following:
Take by weighing the FeCl of 23.88g
3Solid adds dissolved in distilled water in beaker, make FeCl
3Solution;
Take by weighing the anhydrous Na of 2.36g
2CO
3, under agitation condition to FeCl
3Add Na in the solution
2CO
3, treat lather collapse after, according to FeCl
3Middle Fe element and NaH
2PO
4The mol ratio of middle P element is that the amount of 25:2 adds NaH
2PO
4, add the 6.25g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 0.5, Fe
2O
3Content is poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent of 13.33g/L.
Embodiment 4
Like embodiment 3 described preparing methods, difference is, adds the 3.12g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continues then to stir 3h, is settled to 500mL with zero(ppm) water then, and making basicity is 0.5, Fe
2O
3Content is poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent of 10g/L.
Embodiment 5
The preparation method of polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent, step is following:
Take by weighing the AlCl of 34.07g
3The FeCl of solid and 5.46g
3Solid adds dissolved in distilled water in beaker, take by weighing the anhydrous Na of 8.65g
2CO
3, under agitation condition, in solution, add above-mentioned anhydrous Na
2CO
3, treat lather collapse after, according to FeCl
3Middle Fe element and NaH
2PO
4The mol ratio of middle P element is that the amount of 25:2 adds NaH
2PO
4, add the 6.25g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 1.0, Al
2O
3+ Fe
2O
3Content is the polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of 17.84g/L.
Embodiment 6
Like embodiment 5 described preparing methods, difference is,
Add the 3.12g Poly Dimethyl Diallyl Ammonium Chloride, at room temperature continue then to stir 3h, be settled to 500mL with zero(ppm) water, making basicity is 1.0, Al
2O
3+ Fe
2O
3Content is the polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of 17.84g/L.
The effect experiment
The experiment raw water quality
Contain algae Yellow River Reservoir water, water quality is following: 19.5~24.3 ℃ of water temperatures, pH 8.17~8.43, specific conductivity 825~887 μ S/cm, turbidity 4.76~6.19NTU, 245nm absorbancy (UV
254) 0.037~0.046cm
-1, dissolved organic carbon (DOC) 2.891~3.563mg/L, chlorophyll-a content 18.68~34.73 μ g/L.
Test Example 1
The polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of preparation among embodiment 1 and the embodiment 2 is added in the former water; Under the 200rpm rotating speed, stir 1min fast; Under the rotating speed of 40rpm, stir 15min then slowly; After staticly settling 15min, 2cm place water sampling carries out water under liquid level, and the result is as shown in table 1.
Poly aluminium chloride is as contrast, and step is the same, and the result is as shown in table 1 for treating water water quality.
Table 1
From table 1, can find out; Stronger according to embodiment 1 with the charge neutrality ability of the polyaluminium chloride e-poly-dimethyl-diallyl-ammonium chloride composite flocculation agent of embodiment 2 preparations, and the removal effect of testing turbidity, DOC and chlorophyll-a in the former water all obviously is superior to traditional inorganic polymer coagulant poly aluminium chloride.
Test Example 2
Poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride the composite flocculation agent of preparation among embodiment 3 and the embodiment 4 is added in the former water; Under the 200rpm rotating speed, stir 1min fast; Under the rotating speed of 40rpm, stir 15min then slowly; After staticly settling 15min, 2cm place water sampling carries out water under liquid level, and the result is as shown in table 2.
Poly-iron chloride is as contrast, and step is the same, and the result is as shown in table 2 for treating water water quality.
Table 2
From table 2, can find out; Stronger according to embodiment 3 with the charge neutrality ability of the poly-ferric chloride-Poly Dimethyl Diallyl Ammonium Chloride composite flocculation agent of embodiment 4 preparations, and the removal effect of testing turbidity, DOC and chlorophyll-a in the former water all obviously is superior to traditional inorganic polymer coagulant poly-iron chloride.
Test Example 3
The polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of preparation among embodiment 5 and the embodiment 6 is added in the former water; Under the 200rpm rotating speed, stir 1min fast; Under the rotating speed of 40rpm, stir 15min then slowly; After staticly settling 15min, 2cm place water sampling carries out water under liquid level, and the result is as shown in table 3.
Poly aluminium chloride iron is as contrast, and step is the same, and the result is as shown in table 3 for treating water water quality.
Table 3
From table 3, can find out; Stronger according to embodiment 5 with the charge neutrality ability of the polymeric aluminum ferric chloride-polydimethyldiallylachloride chloride composite flocculation agent of embodiment 6 preparations, and the removal effect of testing turbidity, DOC and chlorophyll-a in the former water all obviously is superior to traditional inorganic polymer coagulant poly aluminium chloride iron.
Claims (5)
1. the preparation method of inorganic-organic composite coagulator comprises the steps:
With inorganics AlCl
3And/or FeCl
3Be dissolved in the zero(ppm) water, add Na
2CO
3Making basicity is 0.5~2.0, treats Na
2CO
3After the dissolving, be (4~8) according to Al and/or Fe element and dimethyl diallyl ammonium chloride homopolymer mass ratio: 1 ratio adds the dimethyl diallyl ammonium chloride homopolymer, mixes under the normal temperature, and reaction 1~3h makes inorganic-organic composite coagulator.
2. preparation method as claimed in claim 1 is characterized in that, said inorganics is FeCl
3Perhaps AlCl
3With FeCl
3Mixing the time, treat Na
2CO
3After the dissolving, also comprise adding stablizer NaH
2PO
4Step.
3. preparation method as claimed in claim 2 is characterized in that, said Fe element and NaH
2PO
4The mass ratio of middle P element is 25: (1~3).
4. preparation method as claimed in claim 1 is characterized in that, said inorganics is AlCl
3With FeCl
3Mixing the time, the mol ratio of Al element and Fe element is (3~11): 1.
5. preparation method as claimed in claim 1 is characterized in that, said inorganics is AlCl
3The time, add Na
2CO
3Making basicity is 1.0~2.0; Said inorganics is FeCl
3Perhaps AlCl
3With FeCl
3Mixing the time, add Na
2CO
3Making basicity is 0.5~1.5.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104150573A (en) * | 2014-07-04 | 2014-11-19 | 安徽三环水泵有限责任公司 | Primary physicochemical enhanced coagulant and treatment method of papermaking wastewater |
CN106977003A (en) * | 2016-01-15 | 2017-07-25 | 宝山钢铁股份有限公司 | Electrical conductivity and the method and apparatus of total iron in a kind of cold rolling hydrochloric acid acid regeneration waste water of reduction |
CN108298716A (en) * | 2017-12-31 | 2018-07-20 | 天津泉洁科技有限公司 | A kind of novel drink water purifying method |
CN110776071A (en) * | 2019-10-28 | 2020-02-11 | 德蓝水技术股份有限公司 | Industrial acidic wastewater treatment agent |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1594128A (en) * | 2004-06-30 | 2005-03-16 | 山东大学 | PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof |
CN1724404A (en) * | 2005-06-09 | 2006-01-25 | 山东大学 | Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof |
CN101973613A (en) * | 2010-09-20 | 2011-02-16 | 上海丰信环保科技有限公司 | Composite flocculant |
CN102079565A (en) * | 2009-11-27 | 2011-06-01 | 南京理工大学 | Aluminum sulfate-ferric chloride-poly dimethyl diallyl ammonium chloride ternary complex coagulant as well as preparation and application methods thereof |
CN102115240A (en) * | 2009-12-31 | 2011-07-06 | 南京理工大学 | Polyaluminum sulfate-branched poly(dimethyl diallyl ammonium chloride) composite coagulant and preparation method and application method thereof |
-
2012
- 2012-08-03 CN CN2012102758448A patent/CN102765790A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1594128A (en) * | 2004-06-30 | 2005-03-16 | 山东大学 | PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof |
CN1724404A (en) * | 2005-06-09 | 2006-01-25 | 山东大学 | Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof |
CN102079565A (en) * | 2009-11-27 | 2011-06-01 | 南京理工大学 | Aluminum sulfate-ferric chloride-poly dimethyl diallyl ammonium chloride ternary complex coagulant as well as preparation and application methods thereof |
CN102115240A (en) * | 2009-12-31 | 2011-07-06 | 南京理工大学 | Polyaluminum sulfate-branched poly(dimethyl diallyl ammonium chloride) composite coagulant and preparation method and application method thereof |
CN101973613A (en) * | 2010-09-20 | 2011-02-16 | 上海丰信环保科技有限公司 | Composite flocculant |
Non-Patent Citations (5)
Title |
---|
《Chemical Engineering Journal》 20120315 Cuizhen Sun et.al Synthesis and floc properties of polymeric ferric aluminum chloride-polydimethyl diallylammonium chloride coagulant in coagulating humic acid-kaolin synthetic water 第185-186卷, * |
《Desalination》 20111017 Cuizhen Sun Effect of pH and shear force on flocs characteristics for humic acid removal using polyferric aluminum chloride-organic polymer dual-coagulants 243-247 第281卷, * |
CUIZHEN SUN ET.AL: "Synthesis and floc properties of polymeric ferric aluminum chloride–polydimethyl diallylammonium chloride coagulant in coagulating humic acid–kaolin synthetic water", 《CHEMICAL ENGINEERING JOURNAL》 * |
CUIZHEN SUN: "Effect of pH and shear force on flocs characteristics for humic acid removal using polyferric aluminum chloride–organic polymer dual-coagulants", 《DESALINATION》 * |
王萌萌等: "无机-有机复合混凝剂处理夏季引黄水库水的对比研究", 《中国环境科学》 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104150573A (en) * | 2014-07-04 | 2014-11-19 | 安徽三环水泵有限责任公司 | Primary physicochemical enhanced coagulant and treatment method of papermaking wastewater |
CN104150573B (en) * | 2014-07-04 | 2015-10-28 | 安徽三环水泵有限责任公司 | A kind of one-level materialization enhanced coagulation agent of papermaking wastewater and treatment process thereof |
CN106977003A (en) * | 2016-01-15 | 2017-07-25 | 宝山钢铁股份有限公司 | Electrical conductivity and the method and apparatus of total iron in a kind of cold rolling hydrochloric acid acid regeneration waste water of reduction |
CN106977003B (en) * | 2016-01-15 | 2020-09-25 | 宝山钢铁股份有限公司 | Method and device for reducing conductivity and total iron in cold rolling hydrochloric acid regeneration wastewater |
CN108298716A (en) * | 2017-12-31 | 2018-07-20 | 天津泉洁科技有限公司 | A kind of novel drink water purifying method |
CN110776071A (en) * | 2019-10-28 | 2020-02-11 | 德蓝水技术股份有限公司 | Industrial acidic wastewater treatment agent |
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Application publication date: 20121107 |