CN103043763A - Preparation method of multi-effect seawater flocculating agent - Google Patents
Preparation method of multi-effect seawater flocculating agent Download PDFInfo
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- CN103043763A CN103043763A CN2013100031931A CN201310003193A CN103043763A CN 103043763 A CN103043763 A CN 103043763A CN 2013100031931 A CN2013100031931 A CN 2013100031931A CN 201310003193 A CN201310003193 A CN 201310003193A CN 103043763 A CN103043763 A CN 103043763A
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Abstract
The invention discloses a preparation method of a multi-effect seawater flocculating agent, which comprises the steps of mixing an aluminum sulfate solution and a polysilicic acid solution, adding distilled water, obtaining a polysilicic acid aluminum sulfate solution, mixing the polysilicic acid aluminum sulfate solution and a starch solution for reaction, and obtaining the multi-effect seawater flocculating agent. The concentration of the starch solution is 1-5mg/mL, and the volume ratio of the starch solution to the polysilicic acid aluminum sulfate solution is 1:10. The concentration of aluminum ions in the aluminum sulfate solution is 0.1-0.4mol/L; the polysilicic acid solution comprises 1%-5% of silicon dioxide; and the volume ratio of the polysilicic acid solution to the aluminum sulfate solution to the distilled water is 1:(10-13):(38-44). The prepared multi-effect seawater flocculating agent has high flocculation activity and degerming and algae-removal effects, is specially used for seawater treatment, and is simple and convenient in technology and convenient to apply and promote.
Description
Technical field
The present invention relates to the seawater quality treatment technology, particularly relate to the preparation method of the multiple-effect seawater flocculation agent of seawater quality processing.
Background technology
Flocculation refers to that suspended particulates gather change greatly in the water, or forms floc sedimentation that the particle coagulation is accelerated, the phenomenon that finally causes solid-liquid to separate.Some mineral ions such as iron ion, aluminum ion, organism such as polyacrylamide, the meeting adsorbent particles between particulate " bridge formation ", thereby promotes to gather, and causes flocculation.The principle of throwing out has been applied to reducing the Oranoleptic indicators such as the turbidity, colourity of water.The medicament that is used for throwing out is flocculation agent.Flocculation agent is widely used in the fields such as chemical industry, mining industry, environmental protection, in solid-liquid separation and water treatment procedure, in order to the sedimentation that improves fine solid and filter effect etc.
According to the difference of chemical ingredients, flocculation agent commonly used can be divided into inorganic flocculating agent and organic floculant.Inorganic flocculating agent mainly contains iron system and aluminium is two large classes, can be divided into again low molecular system and Polymer Systems two classes by molecular size range, mainly comprises FeCl
3, AlCl
3, Fe
2(SO
4)
3, Al
2(SO
4)
3And polymer.Organic floculant can be divided into and manually closes polymeric flocculant and natural macromolecule flocculating agent two large classes.Syn-Organic flocculants mostly is water miscible polymkeric substance, comprises the series such as polyacrylamide, sulfonated polyethylene benzene, polyvinyl ether.Natural organic high-molecular flocculant has pure natural, but most ofly forms through chemical modification.Source by its raw material is different, generally can be divided into starch derivative, derivatived cellulose, vegetable jelly modified product, polysaccharide and protein-based modified product etc., and wherein the most potential is water soluble starch derivative and saccharan modified flocculant.Inorganic polymer flocculant is a class novel flocculant that grows up on traditional molysite, aluminium salt basis the sixties in 20th century.In existing market was used, the inorganic polymer flocculation agent was strong because of its flocculation ability, flocculating effect good, and price is lower, progressively became main flow flocculation medicament.
Develop rapidly along with socioeconomic, shortage of water resources contradiction, seawater utilization have become the important means that solves this contradiction.China shoreline is long, and seawater quality is not quite similar, and seawater must just can be used for successive projects through processing, and flocculation sediment is easy and simple to handle, and price advantage is obvious, becomes in the present seawater cleaning processing to remove a very important step of turbidity of sea water.Also do not have in the market to be exclusively used in the flocculation agent of processing seawater, the flocculation agent that is applied to seawater cleaning mainly is the flocculation agent of using fresh water treatment, the multipolymer that mainly contains Tai-Ace S 150, iron(ic) chloride and acrylamide commonly used etc.
Seawater component is complicated, except general particulate material, also contains the multiple harmful substances such as algae, bacterium, as not removing, can cause the problems such as equipment obstruction, corrosion.The flocculation agent that seawater cleaning is processed that is used for having reported does not also have and possesses simultaneously turbidity removal, degerming and the product that removes the algae function.Such as Chinese patent " 201010145233.2 method for purifying seawater with carboxymethyl chitosan as flocculant ", a kind of method for purifying seawater with carboxymethyl chitosan as flocculant is disclosed, mainly remove the turbidity of seawater.Chinese patent " 201110323109.5 1 kinds composite flocculation agent and application " discloses a kind of composite flocculation agent for another example, except having the turbidity of sea water of removing function, can also remove part heavy metal in the seawater, such as arsenic etc.The present invention intends providing the agent of a kind of multiple-effect seawater flocculation, not only can remove the turbidity of seawater, can also possess degerming, except the activity of algae.
Summary of the invention
Do not possess simultaneously turbidity removal for also having on the present market, degerming and except the flocculation agent of three kinds of functions of algae, the invention provides a kind of preparation method of new multiple-effect seawater flocculation agent, its objective is inorganic component and organic constituent composite, form a kind of real multiple-effect seawater flocculation agent, add a kind of medicament, realize simultaneously turbidity removal, degerming and remove three kinds of functions of algae, guaranteeing that the seawater cleaning treatment effect simultaneously, reduces subsequent processing steps.
Multiple-effect seawater flocculation agent preparation method of the present invention, technological step comprises the preparation of polysilicate sulfuric acid aluminium and the preparation of multiple-effect seawater flocculation agent.
1, the preparation of polysilicate sulfuric acid aluminium
Alum liquor is mixed with poly-silicate solution, then add distilled water, make the polysilicate sulfuric acid aluminum solutions.Aluminum ion Al in the alum liquor
3+Concentration is 0.1～0.4mol/L, and poly-silicate solution contains silicon-dioxide SiO
21%～5%, the volume ratio of poly-silicate solution, alum liquor, distilled water is 1 ︰, 10～13 ︰ 38～44.Mentioned solution mixing process is carried out under room temperature and magnetic agitation, stirring velocity 80～100rpm,
2, the preparation of multiple-effect seawater flocculation agent
The polysilicate sulfuric acid aluminum solutions is mixed with starch solution, and reaction makes the agent of multiple-effect seawater flocculation under the magnetic agitation, stirring velocity 80～100rpm, and starch solution concentration is 1～5mg/mL, starch solution and polysilicate sulfuric acid aluminum solutions volume ratio are 1 ︰ 10.
Embodiment
In conjunction with the embodiments technical scheme of the present invention is further described.
Embodiment 1
With 20mL aluminum ion Al
3+Concentration is that alum liquor and the 1.8mL of 0.3mol/L contains silicon-dioxide SiO
22% poly-silicate solution mixes, with speed 80rpm magnetic agitation 40min; Add 78.2mL distilled water again, continue to stir 20min, room temperature leaves standstill slaking 5h, makes the polysilicate sulfuric acid aluminum solutions.
Be that the starch solution of 1mg/mL joins in the above-mentioned polysilicate sulfuric acid aluminum solutions with 10mL concentration, with speed 90rpm magnetic agitation 40min, make the agent of multiple-effect seawater flocculation.
This flocculation agent turbidity removal rate reaches 93%, and the removal of bacteria rate reaches 86%, and algae (little algae) clearance reaches 97%.
Embodiment 2
With 10mL aluminum ion Al
3+Concentration is that alum liquor and the 1mL of 0.5mol/L contains silicon-dioxide SiO
22% poly-silicate solution adds 39mL distilled water at last, continues to stir 40min, and room temperature leaves standstill slaking 5h, makes the polysilicate sulfuric acid aluminum solutions.
Be that the starch solution of 2mg/mL joins in the above-mentioned polysilicate sulfuric acid aluminum solutions with 2.5mL concentration, with speed 100rpm magnetic agitation 50min, make the agent of multiple-effect seawater flocculation.
This flocculation agent turbidity removal rate reaches 90%, and the removal of bacteria rate reaches 83%, and algae (little algae) clearance reaches 92%.
Claims (4)
1. multiple-effect seawater flocculation agent preparation method, it is characterized in that: technological step comprises the preparation of polysilicate sulfuric acid aluminium and the preparation of multiple-effect seawater flocculation agent; The preparation of polysilicate sulfuric acid aluminium mixes alum liquor with poly-silicate solution, then add distilled water, makes the polysilicate sulfuric acid aluminum solutions, aluminum ion Al in the alum liquor
3+Concentration is 0.1～0.4mol/L, and poly-silicate solution contains silicon-dioxide SiO
21%～5%, the volume ratio of poly-silicate solution, alum liquor, distilled water is 1 ︰, 10～13 ︰ 38～44; The preparation of multiple-effect seawater flocculation agent mixes the polysilicate sulfuric acid aluminum solutions with starch solution, reaction makes the agent of multiple-effect seawater flocculation under the magnetic agitation, and starch solution concentration is 1～5mg/mL, and starch solution and polysilicate sulfuric acid aluminum solutions volume ratio are 1 ︰ 10.
2. multiple-effect seawater flocculation agent preparation method according to claim 1, it is characterized in that: mentioned solution mixing process is carried out under room temperature and magnetic agitation, stirring velocity 80～100rpm.
3. multiple-effect seawater flocculation agent preparation method according to claim 1 is characterized in that: in the preparation of described polysilicate sulfuric acid aluminium, alum liquor is mixed with poly-silicate solution, then add distilled water, continue to stir 20min, room temperature leaves standstill slaking 4h, makes the polysilicate sulfuric acid aluminum solutions.
4. multiple-effect seawater flocculation agent preparation method according to claim 1, it is characterized in that: in the preparation of described multiple-effect seawater flocculation agent, starch solution is joined in the polysilicate sulfuric acid aluminum solutions, magnetic agitation 40min makes the agent of multiple-effect seawater flocculation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771572A (en) * | 2014-02-12 | 2014-05-07 | 重庆大学 | Preparation method of polymerization chlorination zinc iron sulfate flocculating agent |
| CN106256770A (en) * | 2016-03-25 | 2016-12-28 | 吉林化工学院 | A kind of preparation method of environmentally friendly aluminium silicate polymer-starch Complex Flocculant |
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| JP2000279708A (en) * | 1999-03-29 | 2000-10-10 | Ebara Corp | Inorganic flocculating agent for water treatment and its production |
| CN1600702A (en) * | 2003-09-26 | 2005-03-30 | 国家海洋局天津海水淡化与综合利用研究所 | Flocculant for seawater and preparation method |
| CN101838040A (en) * | 2010-04-13 | 2010-09-22 | 国家海洋局天津海水淡化与综合利用研究所 | Method for purifying seawater by taking carboxymethyl chitosan as flocculant |
| CN102060362A (en) * | 2010-10-28 | 2011-05-18 | 广东工业大学 | Preparation method of starch-based composite flocculant and application thereof |
| CN102408145A (en) * | 2011-10-21 | 2012-04-11 | 浙江大学舟山海洋研究中心 | Composite flocculant and use thereof |
-
2013
- 2013-01-06 CN CN2013100031931A patent/CN103043763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000279708A (en) * | 1999-03-29 | 2000-10-10 | Ebara Corp | Inorganic flocculating agent for water treatment and its production |
| CN1600702A (en) * | 2003-09-26 | 2005-03-30 | 国家海洋局天津海水淡化与综合利用研究所 | Flocculant for seawater and preparation method |
| CN101838040A (en) * | 2010-04-13 | 2010-09-22 | 国家海洋局天津海水淡化与综合利用研究所 | Method for purifying seawater by taking carboxymethyl chitosan as flocculant |
| CN102060362A (en) * | 2010-10-28 | 2011-05-18 | 广东工业大学 | Preparation method of starch-based composite flocculant and application thereof |
| CN102408145A (en) * | 2011-10-21 | 2012-04-11 | 浙江大学舟山海洋研究中心 | Composite flocculant and use thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771572A (en) * | 2014-02-12 | 2014-05-07 | 重庆大学 | Preparation method of polymerization chlorination zinc iron sulfate flocculating agent |
| CN103771572B (en) * | 2014-02-12 | 2015-02-11 | 重庆大学 | Preparation method of polymerization chlorination zinc iron sulfate flocculating agent |
| CN106256770A (en) * | 2016-03-25 | 2016-12-28 | 吉林化工学院 | A kind of preparation method of environmentally friendly aluminium silicate polymer-starch Complex Flocculant |
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Application publication date: 20130417 |