Preparation method of polymerizing zirconium tetrachloride type inorganic macromolecular coagulant and application thereof

An inorganic polymer, zirconium tetrachloride technology, applied in chemical instruments and methods, zirconium halide, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of low coagulation effluent, affecting effluent utilization and further treatment, etc.

Inactive Publication Date: 2017-09-12
UNIV OF SCI & TECH OF CHINA
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the zirconium tetrachloride solution itself is strongly acidic, and zirconium tetrachloride is used as a coagulant, and a large amount of H will be released due to hydrolys

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of polymerizing zirconium tetrachloride type inorganic macromolecular coagulant and application thereof
  • Preparation method of polymerizing zirconium tetrachloride type inorganic macromolecular coagulant and application thereof
  • Preparation method of polymerizing zirconium tetrachloride type inorganic macromolecular coagulant and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] The first aspect of the present invention provides a method for preparing a polymeric zirconium tetrachloride inorganic polymer coagulant, the method includes the following steps:

[0021] (1) Use deionized water to prepare ZrCl with a concentration of 10%-20% (w / v) (corresponding to the concentration of 111.11-222.22g / L) 4 Solution

[0022] (2) ZrCl 4 Place the solution in an ice-water bath, and slowly add concentrated lye with a concentration of 80-200g / L to ZrCl under the condition of continuous stirring at a stirring rate of 300-800rpm. 4 In the solution, continue to stir for 3-5h after the addition is complete; wherein the concentrated alkali solution and ZrCl 4 The range of solution dosage ratio is greater than 0-2.5.

[0023] (3) The above step (2) The process of adding concentrated lye is controlled within 3h according to the degree of alkalinity, and then continue to stir for 3-5h. The resulting solution is transparent and clear and there is no visible precipitate. Pr...

Example

[0044] Preparation Example 1

[0045] Weigh ZrCl 4 Powder (Wokai, XW100261161) 11.1111g, under 500rpm stirring conditions, quickly added to 50mL ice deionized water, after it is dissolved, add ZrCl 4 The solution is transferred to a 100mL volumetric flask, and the volume of ice deionized water is constant to obtain 10wt% ZrCl 4 Solution; after that, measure 10wt% of ZrCl 4 Solution 10mL, under the condition of vigorous stirring, add 100g / L NaOH solution dropwise through a basic burette, and the dropwise volume is 0.3812mL, 0.953mL, 1.906mL, 2.859mL, 3.812mL, 4.765mL, 5.718mL . The dropping time was 10, 20, 40, 80, 120, 150 minutes. After the dripping, continue to stir for 3-5 hours to obtain a polymeric zirconium tetrachloride inorganic polymer coagulant with a degree of alkalinity (indicated by B) of 0.2, 0.5, 1.0, 1.5, 2.0, 2.5, respectively, and the prepared product is N1 , N2, N3, N4, N5, N6. The electrospray ion-of-flight mass spectrometry (ESI-TOF-MS) was used to analyze ...

Example

[0050] Preparation Example 2

[0051] Weigh ZrCl 4 Powder (Woke, XW100261161) 5.5556g, under 500rpm stirring conditions, quickly added to 25mL ice deionized water, after it is dissolved, add ZrCl 4 The solution is transferred to a 50mL volumetric flask, and the volume of ice deionized water is constant to obtain 10wt% ZrCl 4 Solution; after that, measure 10wt% of ZrCl 4 The solution is 5mL. Under the condition of vigorous stirring, add 100g / L KOH solution dropwise through a basic burette. The dropwise volumes are 0.2669mL, 0.667mL, 1.334mL, 2.002mL, 2.669mL, 3.336mL, 4.003mL . The dropping time was 10, 20, 40, 80, 120, 150 minutes. After the dripping, continue to stir for 3-5 hours to obtain a polymeric zirconium tetrachloride inorganic polymer coagulant with a degree of alkalinity (indicated by B) of 0.2, 0.5, 1.0, 1.5, 2.0, 2.5, respectively, and the prepared product is N1 , N2, N3, N4, N5, N6.

[0052] The inorganic polymer polymer coagulant provided by the invention adopts Zr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an inorganic polymer coagulant for water treatment and a preparation method thereof. The inorganic macromolecule coagulant is polymerized zirconium tetrachloride, which uses zirconium tetrachloride and concentrated lye as raw materials, and slowly adds the concentrated lye to the zirconium tetrachloride solution to obtain different suitable alkalization degrees, concentrated alkali The dropwise addition process is controlled to be completed within 3 hours, and then the stirring is continued for 3-5 hours until the solution becomes a colorless and transparent liquid. The inorganic polymer coagulant provided by the invention has the advantages of good product stability, strong adsorption and bridging ability to colloidal substances, good coagulation effect, wide application range, etc., and can be widely used in water supply, wastewater treatment, papermaking, textile printing and dyeing , Daily chemicals and other fields, and has a good water treatment effect. The method of the invention has the characteristics of simple and convenient process, economy, speed and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method of a polymerized zirconium tetrachloride inorganic polymer coagulant (PZC) and its use as a water treatment agent. Background technique [0002] Iron-based or aluminum-based coagulants are rich in a variety of highly positively charged hydrolysis products. In order to improve the coagulation effect, Al and Fe salts are often pre-hydrolyzed to obtain products such as polyaluminum chloride, polyferric chloride and polyferric sulfate. However, a large amount of aluminum-based coagulants will produce a certain amount of Al residues, which may cause potential harm to human health; the use of iron-based coagulants also has some problems, such as the residual Fe salts in the treated water are highly corrosive . Therefore, it is imperative to prepare new flocculants with high coagulation efficiency. The application of other alternative metal ions, such as ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01G25/04C02F1/52
CPCC01G25/04C02F1/5236
Inventor 盛国平李娜俞汉青胡怡
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap