CN105000649A - Preparation method for polysilicate aluminum magnesium-chitosan composite flocculant - Google Patents

Preparation method for polysilicate aluminum magnesium-chitosan composite flocculant Download PDF

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Publication number
CN105000649A
CN105000649A CN201510484081.1A CN201510484081A CN105000649A CN 105000649 A CN105000649 A CN 105000649A CN 201510484081 A CN201510484081 A CN 201510484081A CN 105000649 A CN105000649 A CN 105000649A
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China
Prior art keywords
preparation
chitosan
polysilicate
composite flocculant
flocculant
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CN201510484081.1A
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Chinese (zh)
Inventor
娄大伟
韩雪
祝波
孙秀云
连丽丽
任红
王润楠
罗亚楠
孙俊峰
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Jilin Institute of Chemical Technology
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Jilin Institute of Chemical Technology
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Priority to CN201510484081.1A priority Critical patent/CN105000649A/en
Publication of CN105000649A publication Critical patent/CN105000649A/en
Pending legal-status Critical Current

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Abstract

The invention aims at developing a preparation method for a polysilicate aluminum magnesium-chitosan composite flocculant. The composite flocculant can be applied to domestic sewage and dyestuff wastewater. Chitosan, polysilicate, aluminium salt and magnesium salt mainly serve as main materials in an experiment. A composite copolymerization method is mainly adopted by the experiment, the chitosan, the polysilicate, the aluminium salt and the magnesium salt are reacted with one another according to a certain proportion. The preparation method is simple, the preparation condition is easy to control, a destaining effect of the polysilicate aluminum magnesium-chitosan composite flocculant is well played in sewage, the settling velocity of floccules is high, and the flocculant is suitable for processing low-temperature sewage in winter in the north. A good application prospect is obtained.

Description

A kind of preparation method of polysilicon acid magnalium-chitin composite flocculant
Technical field
The present invention mainly prepares a kind of polysilicon acid magnalium-chitin composite flocculant, is applied to the process of sanitary sewage and dyeing waste water.
Background technology
Along with the fast development of dyeing industry, dyeing waste water be treated as the current problem that can not be ignored.Comparison of ingredients due to dyestuff is complicated and be easily decomposed into poisonous or cause irritated material, if remained in a large number in water, certainly will cause very large impact to human body and ecotope.
The flocculation agent that current treatment of dyeing and printing effectiveness comparison is good is polysilicon acid magnesium salts flocculation agent, but due to polysilicon acid magnesium salts flocculation agent be a kind of single type flocculation agent, use range is narrow, and the flocs unit formed is in small, broken bits, not free settling.Therefore, in current research, majority is all in polysilicon acid magnesium salts, introduce some other materials prepare composite high-molecular flocculation agent,
This research introduces aluminium salt and chitosan in the theoretical basis of polysilicon acid magnesium salts.The introducing of aluminium salt strengthens the charge neutrality effect of flocculation agent, makes coagulation process alumen ustum become large, is easy to sedimentation.Chitosan is nontoxic, degradable, there is not secondary pollution, and the linear molecule of chitosan has hydroxyl and amino, is introduced in flocculation agent, on the basis for the treatment of of dyeing and printing, can also adsorb the heavy metal ion in waste water.Novel polysilicon acid magnalium-chitosan has adsorption bridging and charge neutrality effect concurrently simultaneously, and use range is wider, is not only applicable to treatment of dyeing and printing, sanitary sewage, may be used for processing northern low-temperature sewage, meta-alkalescence sewage simultaneously.
Summary of the invention
The invention provides the preparation method of a kind of polysilicon acid magnalium-chitin composite flocculant.Its preparation method is:
(1) be dissolved in the acetum of 1% by chitosan (CTS), massfraction is 0.8-1.1%.
(2) aluminum sulfate octadecahydrate is water-soluble, concentration is 0.75-0.9mol/L.
(3) magnesium sulfate heptahydrate is water-soluble, concentration is 0.8-0.95mol/L.
(4) aluminum salt solution, magnesium salt solution and chitosan solution, polysilicon acid are mixed according to a certain percentage, wherein (Al+Mg)/SiO 2mol ratio be the mol ratio of 0.6-0.9, Al/Mg be 5-15, the mass ratio of (Al+Mg)/CTS is 7-9.
(5) pH is regulated to be 1.0-1.5.
(6) 50-70 DEG C of stirred in water bath 2 hours.
(7) curing time is 5-7 hour.
Embodiment
Embodiment 1
The present embodiment is the preparation of polysilicon acid magnalium-chitosan.
Under 55 DEG C of bath temperatures, get 63ml polysilicon acid, add 7.5ml alum liquor, 0.75ml Adlerika, 3.5ml chitosan solution in beaker, be added dropwise to massfraction be 10% hydrochloric acid soln regulate pH be 1.35. stirring in water bath 2 hours, slaking 6 hours.Obtain finished product A.
Embodiment 2
The present embodiment is the preparation of aluminium silicate polymer cadmia glycan.
Under 65 DEG C of bath temperatures, get 78ml polysilicon acid, add 7.0ml alum liquor, 1.3ml solution of zinc sulfate, 2.9ml chitosan solution in beaker, add massfraction be 10% hydrochloric acid soln regulate pH be 1.5, stirring in water bath 2 hours, slaking 4 hours.Obtain finished product B.

Claims (8)

1., for a preparation method for the composite flocculant of sanitary sewage and dye wastewater treatment, concrete preparation method is as follows:
Inorganic aluminate, magnesium salt solution and chitosan-acetic acid solution are added in polysilicon acid solution according to a certain percentage, and regulates pH, stirring in water bath 2 hours with the hydrochloric acid soln that massfraction is 10%, leave standstill slaking certain hour.
2., according to the preparation method in claims 1, it is characterized in that (Al+Mg)/SiO 2mol ratio be 0.6-0.9.
3., according to the preparation method in claims 1, it is characterized in that the acetum with 1% dissolves chitosan, concentration is 0.8%-1.1%.
4., according to the preparation method in claims 1, it is characterized in that the mass ratio of (Al+Mg)/CTS is 7-9.
5., according to the preparation method in claims 1, it is characterized in that the mol ratio of Al/Mg is 5-15.
6., according to the preparation method in claims 1, it is characterized in that bath temperature is 50 DEG C-70 DEG C.
7., according to the preparation method in claims 1, be 1.0-1.5 with the salt acid for adjusting pH that massfraction is 10%.
8., according to the preparation method in claims 1, the curing time is 3h-8h.
CN201510484081.1A 2015-08-10 2015-08-10 Preparation method for polysilicate aluminum magnesium-chitosan composite flocculant Pending CN105000649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510484081.1A CN105000649A (en) 2015-08-10 2015-08-10 Preparation method for polysilicate aluminum magnesium-chitosan composite flocculant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510484081.1A CN105000649A (en) 2015-08-10 2015-08-10 Preparation method for polysilicate aluminum magnesium-chitosan composite flocculant

Publications (1)

Publication Number Publication Date
CN105000649A true CN105000649A (en) 2015-10-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106379980A (en) * 2016-11-18 2017-02-08 吉林化工学院 Preparation method of aluminum and magnesium polysilicate-starch composite flocculating agent
CN106517460A (en) * 2016-11-18 2017-03-22 吉林化工学院 Preparation method for magnesium aluminum polysilicate-cellulose composite flocculating agent
CN107265591A (en) * 2017-07-27 2017-10-20 柳三春 Complex solid water treatment agent and preparation method thereof
CN108585150A (en) * 2018-05-22 2018-09-28 安徽智博新材料科技有限公司 It is a kind of to be used to handle environmental protection flocculant of sanitary sewage and preparation method thereof
CN113117505A (en) * 2019-12-31 2021-07-16 苏州安建环保科技有限公司 Double-alkali flue gas desulfurization and dust removal system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102259963A (en) * 2011-06-22 2011-11-30 哈尔滨工业大学 Polymeric magnesium silicate-sulfate composite flocculant
CN103420468A (en) * 2013-09-14 2013-12-04 邢柯君 Multi-element composite flocculant for treating printing and dying wastewater and textile wastewater and preparing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102259963A (en) * 2011-06-22 2011-11-30 哈尔滨工业大学 Polymeric magnesium silicate-sulfate composite flocculant
CN103420468A (en) * 2013-09-14 2013-12-04 邢柯君 Multi-element composite flocculant for treating printing and dying wastewater and textile wastewater and preparing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
伍钧等: ""PSAF-CTS复合絮凝剂形貌结构特征研究"", 《环境工程学报》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106379980A (en) * 2016-11-18 2017-02-08 吉林化工学院 Preparation method of aluminum and magnesium polysilicate-starch composite flocculating agent
CN106517460A (en) * 2016-11-18 2017-03-22 吉林化工学院 Preparation method for magnesium aluminum polysilicate-cellulose composite flocculating agent
CN107265591A (en) * 2017-07-27 2017-10-20 柳三春 Complex solid water treatment agent and preparation method thereof
CN108585150A (en) * 2018-05-22 2018-09-28 安徽智博新材料科技有限公司 It is a kind of to be used to handle environmental protection flocculant of sanitary sewage and preparation method thereof
CN113117505A (en) * 2019-12-31 2021-07-16 苏州安建环保科技有限公司 Double-alkali flue gas desulfurization and dust removal system

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Application publication date: 20151028