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A kind of anionic polyacrylamide and its application

A technology of polyacrylamide and anion, applied in chemical instruments and methods, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., to achieve efficient sewage purification effect

Active Publication Date: 2021-07-20
江西洪城环境股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the domestic situation, although there are a wide variety of PAM products on the market, most of these products are used in the tertiary mining of oil fields, papermaking and other industries, and there is still a large gap in the practical PAM water purifier for urban sewage purification.

Method used

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  • A kind of anionic polyacrylamide and its application
  • A kind of anionic polyacrylamide and its application
  • A kind of anionic polyacrylamide and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Add 5g of acrylamide and 0.56g of sodium p-styrene sulfonate to a 250mL three-necked flask in sequence to dissolve them in 17mL of deionized water to prepare salt solution C, and mechanically stir at a speed of 300r / min for 30min. Slowly raise the temperature to 50°C, prepare initiator B containing 0.0053g ammonium persulfate, 0.0125g sodium borohydride, 0.0125g azobisisobutylamidine hydrochloride and 1.5mL deionized water. The prepared initiator B was added dropwise to the salt solution C with a peristaltic pump, and the dropping time was 30 minutes. After the dropwise addition, the reaction temperature was raised to 50°C, and the reaction was continued for 2-3 hours until the solution became a transparent colloid. Take out the jelly sample and place it in an evaporating dish and dry it at a constant temperature of 75° C. to a constant weight to obtain an anionic polyacrylamide (10-APAM) with an ionicity of 10 wt.%.

[0044] The 10-APAM synthesized in embodiment 1 and ...

Embodiment 2

[0046] Add 5g of acrylamide and 1.25g of sodium p-styrenesulfonate to a 250mL three-necked flask in sequence to dissolve them in 17mL of deionized water to prepare salt solution C, and mechanically stir at a speed of 300r / min for 30min. Slowly raise the temperature to 50°C, prepare initiator B containing 0.0053g ammonium persulfate, 0.0125g sodium borohydride, 0.0125g azobisisobutylamidine hydrochloride and 1.5mL deionized water. The prepared initiator B was added dropwise to the salt solution C with a peristaltic pump, and the dropping time was 30 minutes. After the dropwise addition, the reaction temperature was raised to 50°C, and the reaction was continued for 2-3 hours until the solution became a transparent colloid. Take out the gel sample and place it in an evaporating dish and dry it at a constant temperature of 75°C until it reaches a constant weight to obtain an anionic polyacrylamide with an ion content of 20wt.%.

Embodiment 3

[0048] Add 5g of acrylamide and 2.14g of sodium p-styrene sulfonate to a 250mL three-necked flask successively to dissolve them in 17mL of deionized water to prepare salt solution C, and mechanically stir at a speed of 300r / min for 30min. Slowly raise the temperature to 50°C, prepare initiator B containing 0.0053g ammonium persulfate, 0.0125g sodium borohydride, 0.0125g azobisisobutylamidine hydrochloride and 1.5mL deionized water. The prepared initiator B was added dropwise to the salt solution C with a peristaltic pump, and the dropping time was 30 minutes. After the dropwise addition, the reaction temperature was raised to 50°C, and the reaction was continued for 2-3 hours until the solution became a transparent colloid. Take out the jelly sample and place it in an evaporating dish and dry it at a constant temperature of 75°C to a constant weight to obtain an anionic polyacrylamide with an ion content of 30wt.%.

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Abstract

The invention discloses an anionic polyacrylamide and its application, belonging to the technical field of sewage treatment. The anionic polyacrylamide has acrylamide as a monomer, sodium p-styrenesulfonate as an ionic monomer, and ammonium persulfate as an initiator. Sodium borohydride, azobisisobutylamidine hydrochloride; the ionic monomer is grafted on the carbon chain of polyacrylamide; the ionicity of the anionic polyacrylamide is 10-40wt.%, preferably 20wt.% The degree of polymerization of the anionic polyacrylamide is 8-190,000, preferably 150,000; the present invention introduces an appropriate amount of water-soluble ionic groups in the process of synthesizing polyacrylamide to regulate its ionicity for urban sewage treatment, By screening out the appropriate ionicity and corresponding use process conditions, further optimize the electrostatic adsorption and flocculation of the charged groups on the polymer to the impurities in the water, so as to achieve efficient sewage purification effect through functional integration to meet the national first-class A standard .

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anionic polyacrylamide and its application. Background technique [0002] With the modernization of my country's industry and agriculture and the evolution of urbanization, the sewage generated by urban production and life has become more and more complex in composition and discharge volume; at the same time, it corresponds to the requirements of sustainable development and healthy life. , The demand of the whole society for a clean water environment has objectively contributed to the continuous improvement of the national sewage purification treatment standards. At present, the sewage treatment indicators of major cities in China are facing the realistic requirement of upgrading from the current first-class B standard to the first-class A standard, and the current use of simple inorganic flocculation purifiers such as polyaluminum chloride (PAC) for urban sewage purif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F212/14C02F1/52C02F1/56
CPCC02F1/5245C02F1/56C08F220/56C08F212/14
Inventor 赵丹魏锋何洪谢光勇郑振伟陈超张宁
Owner 江西洪城环境股份有限公司
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