Method for reducing viscosity of polyacrylamide with chlorine dioxide by acid activator

A polyacrylamide and chlorine dioxide technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as low efficiency and poor treatment effect, and achieve viscosity reduction. The effect of good effect and short reaction time

Inactive Publication Date: 2013-04-17
NORTHEAST GASOLINEEUM UNIV
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method for reducing the viscosity of polyacrylamide by chlorine dioxide under an acidic activator, which is used to solve the problems of poor treatment effect and low efficiency when using traditional methods to treat oilfield wastewater containing polyacrylamide

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

Embodiment 1

[0010] Take 2.5mL chlorine dioxide (20000mg / L) into a 25mL volumetric flask, add 2mL hydrochloric acid with a mass percentage concentration of 3.65% as an activator for 6 hours, and prepare a 2000mg / L chlorine dioxide solution.

[0011] Take 200mL of polyacrylamide wastewater with a concentration of 100mg / L and place it in a brown reaction bottle, adjust the pH value to 12.0 with sodium hydroxide solution, add 1mL of chlorine dioxide with hydrochloric acid as an activator to the reaction bottle, and dissolve the The reaction bottle was placed on a magnetic stirrer for polyacrylamide viscosity reduction, and the polyacrylamide viscosity reduction rate reached 100% after 120 minutes of reaction.

Embodiment 2

[0013] Take 2.5mL of chlorine dioxide (20000mg / L) into a 25mL volumetric flask, add 4mL of phosphoric acid with a mass percentage concentration of 3.65% as an activator for 24 hours, and prepare a 2000mg / L chlorine dioxide solution.

[0014] Take 200mL of polyacrylamide wastewater with a concentration of 200mg / L in a brown reaction bottle, adjust the pH value to 12.0 with sodium hydroxide solution, add 1.5mL of chlorine dioxide with phosphoric acid as an activator to the reaction bottle for polyacrylamide Viscosity reduction, the polyacrylamide viscosity reduction rate reached 94% after 120 minutes of reaction.

Embodiment 3

[0016] Take 2.5mL chlorine dioxide (20000mg / L) into a 25mL volumetric flask, add 2mL hydrochloric acid with a mass percentage concentration of 3.65% as an activator for 18 hours, and prepare a 2000mg / L chlorine dioxide solution.

[0017] Take 200mL of polyacrylamide wastewater with a concentration of 600mg / L in a brown reaction bottle, adjust the pH value to 4.0 with sulfuric acid solution, add 3.0mL of chlorine dioxide with hydrochloric acid as an activator to reduce the viscosity of polyacrylamide , The viscosity reduction rate of polyacrylamide reached 84% after 120 minutes of reaction.

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

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for reducing viscosity of polyacrylamide with chlorine dioxide by an acid activator. The method for reducing the viscosity of polyacrylamide with chlorine dioxide by the acid activator comprises the steps that 100-600mg/L polyacrylamide waste water is placed in a brown reaction flask; a pH value of the waste water is adjusted to 4-12 with sulfuric acid or sodium hydroxide; a chlorine dioxide solution activated by hydrochloric acid or phosphoric acid is measured and placed in the reaction flask; a volume ratio of the polyacrylamide waste water to the activated chlorine dioxide solution ranges from 200:1 to 200:3; and the reaction flask is placed on a magnetic stirrer for reaction for 1-2h. The method is applicable to treatment on the 100-600mg/L polyacrylamide waste water; hydrochloric acid or phosphoric acid acts as the activator to activate chlorine dioxide; the reaction time is short; a viscosity reducing effect is good; and a viscosity reducing rate of polyacrylamide can reach above 79%.

Description

technical field [0001] The invention relates to a method for treating industrial waste water, in particular to a method for reducing the viscosity of polyacrylamide by chlorine dioxide under an acidic activator. Background technique [0002] At present, the new technology of polymer flooding for tertiary oil recovery has been widely used in the development of oilfields in my country, and good results have been achieved. Therefore, more polyacrylamide will be used in more oilfields, but what follows is A large amount of polymer flooding oil production wastewater is produced. The content of polyacrylamide in the produced water of tertiary oil recovery wastewater is generally 100-600mg / L. Wastewater containing polyacrylamide is a kind of complex and special sewage. Although the content of polyacrylamide is very small, the sewage is also viscous and oily. The key issue in dealing with pollution is to remove polyacrylamide in sewage. Conventional water treatment methods have no ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 张红梅李金莲陈颖林红岩李芳苑丹丹
Owner NORTHEAST GASOLINEEUM 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