Synthetic method for poly nano-silica zinc borate iron flocculant

A technology of nano-silicon dioxide and synthesis method, which is applied in the fields of boron oxides, borate, flocculation/sedimentation water/sewage treatment, etc., which can solve the difficulty of high-efficiency removal of product salinity, hypoxia, nitrogen and phosphorus. and other problems to achieve good salt resistance

Inactive Publication Date: 2013-02-13
CHANGZHOU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The eutrophication of the water body leads to algae outbreaks and the lack of oxygen in the water body. Nitrogen and phosphorus are the main factors that cause algal blooms. Moreover, nitrogen and phosphorus in drinking water are easily used by nitrifying bacteria to generate nitrite, and the high concentration of nitrite Salt tap water will cause great harm to human health after being drunk by the human body
At present, whether it is sewage discharge or reuse, the state strictly controls the nitrogen and phosphorus discharge standards in sewage, and the source water is more stringent. However, it is difficult to efficiently remove low-concentration nitrogen and phosphorus (concentration < 8mg/L)
[0003] Chinese patent CN101003390 proposes a kind of industrial pickling waste liquid and iron oxide scale as main raw materials, using high-shear equipment to p

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Weigh 7g of ammonium ferric sulfate hexahydrate, add 80mL of distilled water to dissolve, place in a 250mL three-neck flask, add 2g of zinc peroxide, 10mL of 0.2mol / L HCl solution, stir, heat up to 50°C, add 0.5mol / L HCl solution 2 SO 4 15mL, continue to stir, heat up to 60°C, add 6g of sodium tetraborate, stir, after 1 hour of reaction, stop heating, wait for the temperature to cool to 30°C, add 20% H 2 o 2 The solution was 20 mL, stirred, reacted for 30 min, added 0.1 mol / L NaOH solution to adjust pH=8, and stood still.

[0030] Place the prepared above solution in a 250mL round bottom flask, add 1g of nano-SiO 2 , stirred for 4 h under a magnetic stirrer, and the temperature was controlled at 60° C., until the liquid became viscous and the reaction stopped.

[0031] The obtained solution was placed in a vacuum drying oven, the temperature was controlled at 105°C, and it was dried continuously for 20 hours. The obtained product was a light yellow powder with a basi...

example 2

[0033] Weigh 8g of ammonium ferric sulfate hexahydrate, add 85mL of distilled water to dissolve, place in a 250mL three-neck flask, add 3g of zinc peroxide, 12mL of 0.2mol / L HCl solution, stir, heat up to 52°C, add 0.5mol / L HCl 2 SO 4 16mL, continue to stir, heat up to 62°C, add 6.5g of sodium tetraborate, stir, after 1 hour of reaction, stop heating, wait until the temperature is cooled to 30°C, add 20% H 2 o 2 The solution was 22mL, stirred, reacted for 30min, added 0.1mol / L NaOH solution to adjust pH=9, and stood still.

[0034] Place the prepared above solution in a 250mL round bottom flask, add 1.5g of nano-SiO 2 , stirred for 4.5 h under a magnetic stirrer, and the temperature was controlled at 62° C. until the liquid became viscous and the reaction stopped.

[0035]The resulting solution was placed in a vacuum drying oven, the temperature was controlled at 105°C, and it was dried continuously for 22 hours. The obtained product was a light yellow powder with a basicit...

example 3

[0037] Weigh 9g of ammonium ferric sulfate hexahydrate, add 90mL of distilled water to dissolve, place in a 250mL three-neck flask, add 4g of zinc peroxide, 13mL of 0.2mol / L HCl solution, stir, heat up to 54°C, add 0.5mol / L HCl 2 SO 4 18mL, continue to stir, heat up to 65°C, add 7g of sodium tetraborate, stir, after 2 hours of reaction, stop heating, wait for the temperature to cool to 32°C, add 20% H 2 o 2 The solution was 24mL, stirred, reacted for 40min, added 0.1mol / L NaOH solution to adjust pH=9, and stood still.

[0038] Place the prepared above solution in a 250mL round bottom flask, add 2g of nano-SiO 2 , stirred for 5 h under a magnetic stirrer, and the temperature was controlled at 63° C., until the liquid became viscous and the reaction stopped.

[0039] The obtained solution was placed in a vacuum drying oven, the temperature was controlled at 108° C., and dried continuously for 22 hours. The obtained product was a white powder with a basicity of 67%. The synthe...

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 a synthetic method for a poly nano-silica zinc borate iron flocculant. An inorganic polymeric flocculant is prepared by utilizing iron sulfate ammonium hexahydrate, zinc peroxide, sodium tetraborate and nano-silica as raw materials, utilizing hydrogen peroxide as an oxidizing agent and carrying out a polymerization reaction by the raw materials and the oxidizing agent at pH of 8.0-10.0 and a temperature of 60-65 DEG C for 6-8h. Compared with a traditional poly ferro-aluminium inorganic polymeric flocculant, the inorganic polymeric flocculant prepared by the synthetic method is high in salt resistance and capable of removing low-concentration nitrogen and phosphorus materials from low-temperature and low-turbidity water particularly; and a removal rate can be as high as more than 99.9%.

Description

technical field [0001] The invention relates to a method for synthesizing an inorganic macromolecule flocculant of polynanometer silicon dioxide zinc iron borate, belonging to the field of chemical synthesis. Background technique [0002] With the concentration of urban population and the development of industry and agriculture, the problem of eutrophication of water bodies has become increasingly prominent. The eutrophication of the water body leads to algae outbreaks and the lack of oxygen in the water body. Nitrogen and phosphorus are the main factors that cause algal blooms. Moreover, nitrogen and phosphorus in drinking water are easily used by nitrifying bacteria to generate nitrite, and the high concentration of nitrite Salt tap water will cause great harm to human health after being drunk by the human body. At present, whether it is sewage discharge or reuse, the state strictly controls the nitrogen and phosphorus discharge standards in sewage, and the source water i...

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): C01B35/12C02F1/52
Inventor 赵玲萍
Owner CHANGZHOU UNIV
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