Polymer flocculant, its preparation method and application

A polymer flocculant and initiator technology, applied in the field of its preparation, sewage purifier, polymer flocculant, can solve the problems of limited use, weak treatment effect of heavy metal ions, etc., to achieve easy operation control, excellent removal effect, process simple mature effect

Active Publication Date: 2017-04-12
宁夏天地元环境实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its treatment effect on heavy metal ions in wastewater is weak, which limits its use to a large extent.

Method used

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  • Polymer flocculant, its preparation method and application
  • Polymer flocculant, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Under the condition of nitrogen protection, the blend of 1.812 grams of 3-acrylamidophenylboronic acid and 2.955 grams of acrylamide was mixed with 550 grams of 10w% aqueous methanol solution and stirred at a constant speed to fully dissolve it; then the solution Heat to 50° C. and slowly add 6 mg of azobisisobutylamidine hydrochloride dropwise at a stirring speed of 100-400 rpm. After the dropwise addition of azobisisobutylamidine hydrochloride was completed, the polymerization reaction was carried out for another 10 h. After the reaction, the reaction residue was lowered to room temperature and collected into a dialysis bag with a molecular weight cut-off of 12,000-14,000 for separation. The separation time was 1 day, and then the resulting product was freeze-dried to obtain the final product, namely polymer flocculation agent ( 1 For H NMR and UV spectra see Figure 1-Figure 2 ), and its number average molecular weight is 1.5 million to 4 million. In a dry environ...

Embodiment 2

[0036] Under the condition of nitrogen protection, 1.242 grams of 3-acrylamidophenylboronic acid and 4.231 grams of acrylamide blend were mixed with 400 grams of 15w% isopropanol aqueous solution and stirred at a constant speed to make it fully dissolved; then the The solution was heated to 55° C. and 7 mg of tert-butyl peroxide was slowly added dropwise at a stirring speed of 100-400 rpm. After the dropwise addition of tert-butyl peroxide was completed, the polymerization reaction was carried out for another 6 h. After the reaction, the reaction residue was lowered to room temperature and collected into a dialysis bag with a molecular weight cut-off of 12,000-14,000 for separation. The separation time was 2 days, and then the resultant was freeze-dried to obtain the final product, namely polymer flocculation agent, its number average molecular weight is 1.5 million to 4 million. In a dry environment, the polymer flocculant can be stored stably for more than 2 years.

Embodiment 3

[0038] Under the condition of nitrogen protection, mix 1.223 grams of 3-acrylamidophenylboronic acid and 5.832 grams of acrylamide blend with 1000 grams of 20w% ethanol aqueous solution and stir at a constant speed to fully dissolve it; then the solution Heat to 65° C. and slowly add 8 mg of 2,2′-azobis(2-methylpropionamide) dihydrochloride dropwise at a stirring speed of 100-400 rpm. After the dropwise addition of 2,2'-azobis(2-methylpropionamide) dihydrochloride was completed, the polymerization reaction was carried out for another 14 hours. After the reaction, the reaction residue was lowered to room temperature and collected into a dialysis bag with a molecular weight cut-off of 12,000-14,000 for separation. The separation time was 3 days, and then the resultant was freeze-dried to obtain the final product, namely polymer flocculation agent, its number average molecular weight is 1.5 million to 4 million. In a dry environment, the polymer flocculant can be stored stably f...

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Abstract

The invention discloses a high molecular coagulant, as well as a preparation method and application thereof. The preparation method comprises the following steps: in a protective atmosphere, fully mixing 1 part by weight of a blend of 3-acrylamide phenylboronic acid and an acrylamide monomer with 50-200 parts by weight of a solvent to form a solution, heating the solution to a preset temperature, and adding an initiating agent in batch for polymerization reaction; after the polymerization reaction is finished, cooling an obtained reaction mixture, performing dialytic separation on the cooled reaction mixture to obtain an object, and drying the obtained object to obtain the high molecular coagulant. The preparation process of the high molecular coagulant is simple and mature, low in production cost, environmentally friendly, and easy to control; in addition, the obtained polymerizate (namely, the high molecular coagulant) has the advantages that the flocculation effect is excellent, the consumption is less, the effect realization speed is high, and the property is stable; meanwhile, the high molecular coagulant has a very excellent removal effect on heavy metals such as zinc, lead and cadmium, can be used as a novel flocculant and a mud cake dehydrating agent, and has a broad application prospect in water treatment industries.

Description

technical field [0001] The invention relates to a sewage purifying agent, in particular to a polymer flocculant, its preparation method and application, and belongs to the field of industrial wastewater treatment. Background technique [0002] With the rapid development of modern industry and the continuous improvement of people's quality of life, water consumption is increasing sharply, causing the shortage of water resources. Sewage purification and reuse will become one of the important ways to solve this problem. At present, in the process of sewage purification, flocculation and sedimentation is a relatively popular, economical and practical method. [0003] Flocculant is a common water treatment chemical. Its use can not only reduce the sensory indicators such as turbidity and color of water, but also remove a variety of high molecular organic matter, colloidal particles, heavy metal ions and certain radioactive substances. At present, the widely used flocculants at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/58C02F1/56
Inventor 张丹余光华龙柱王建华
Owner 宁夏天地元环境实业发展有限公司
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