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Efficient flocculating agent for papermaking wastewater treatment and preparation method thereof

A technology of papermaking wastewater and flocculant, which is applied in the process of wastewater treatment, flocculation/sedimentation water/sewage treatment, etc. Low dosage, good effect

Inactive Publication Date: 2018-12-21
NINGBO DIYANG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared high-efficiency flocculant for papermaking wastewater treatment overcomes the defects of low flocculation and sedimentation efficiency, high chemical consumption, easy to cause secondary pollution, and strong metal corrosion ability of inorganic flocculants in the prior art

Method used

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  • Efficient flocculating agent for papermaking wastewater treatment and preparation method thereof

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Effect test

Embodiment 1

[0028] A preparation method of high-efficiency flocculant for papermaking wastewater treatment, comprising the steps of:

[0029] ⅠDissolve 10g of N-trimethylolacrylamide and 20g of furan-2-methyl-(1-phenyl-3-butenyl)amine in 100g of dimethyl sulfoxide, and add azobisiso 1 g of butyronitrile was stirred and reacted in a nitrogen atmosphere at 65°C for 3 hours, then precipitated in acetone, filtered with suction, and dried in a vacuum oven at 70°C for 10 hours to obtain an acrylamide copolymer;

[0030] II Dissolve 10 g of the acrylamide copolymer prepared in step I and 20 g of bromomethylene (phosphonic acid) in 50 g of tetrahydrofuran, stir and react at 40°C for 6 hours, then remove the tetrahydrofuran by rotary evaporation, and wash the product 3 with ether Next, place the obtained product in a vacuum drying oven at 70°C for 10 hours to obtain an ionic acrylamide copolymer;

[0031] III Add 10 g of the ionic acrylamide copolymer prepared in step II to 100 g of an aqueous so...

Embodiment 2

[0036] A preparation method of high-efficiency flocculant for papermaking wastewater treatment, comprising the steps of:

[0037]ⅠDissolve 10g of N-trimethylolacrylamide and 23g of furan-2-methyl-(1-phenyl-3-butenyl)amine in 110g of N,N-dimethylformamide, and add Add 1.5 g of azobisisoheptanonitrile, stir and react under nitrogen atmosphere at 67°C for 3.5 hours, then precipitate in acetone, filter with suction, and dry the obtained product in a vacuum oven at 72°C for 12 hours to obtain propylene Amide copolymer;

[0038] II Dissolve 10 g of the acrylamide copolymer prepared in step I and 23 g of bromomethylene (phosphonic acid) in 60 g of tetrahydrofuran, stir and react at 45°C for 6.5 hours, then remove the solvent by rotary evaporation, and wash the product 4 with diethyl ether Next, place the obtained product in a vacuum drying oven at 72°C for 12 hours to obtain an ionic acrylamide copolymer;

[0039] III Add 10 g of the ionic acrylamide copolymer prepared in step II t...

Embodiment 3

[0044] A preparation method of high-efficiency flocculant for papermaking wastewater treatment, comprising the steps of:

[0045] ⅠDissolve 10g of N-trimethylolacrylamide and 25g of furan-2-methyl-(1-phenyl-3-butenyl)amine in 13g of N-methylpyrrolidone, and add azobis 2g of isobutyronitrile was stirred and reacted at 69°C in a nitrogen atmosphere for 4 hours, then precipitated in acetone, filtered with suction, and dried in a vacuum oven at 75°C for 13 hours to obtain an acrylamide copolymer;

[0046] II Dissolve 10 g of the acrylamide copolymer prepared in step I and 25 g of bromomethylene (phosphonic acid) in 65 g of tetrahydrofuran, stir and react at 50°C for 7 hours, then remove the solvent by rotary evaporation, and wash the product 5 with diethyl ether The second time, the obtained product was placed in a vacuum drying oven at 75°C for 13 hours to obtain an ionic acrylamide copolymer;

[0047] III Add 10 g of the ionic acrylamide copolymer prepared in step II to 160 g o...

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Abstract

The invention provides a preparation method for an efficient flocculating agent for papermaking wastewater treatment. The preparation method comprises the following steps: (I) preparing acrylamide copolymer; (II) preparing ionic type acrylamide copolymer; (III) preparing 2-naphthylamine-3,6,8-trisulfonic acid modified ion type acrylamide copolymer; (IV) preparing polydimethoxysilane modified 2-naphthylamine-3,6,8-trisulfonic acid modified ion type acrylamide copolymer; and (V) performing ion exchange with aluminium chloride. The invention further discloses the efficient flocculating agent forpapermaking wastepaper treatment, prepared by the preparation method. The efficient flocculating agent for papermaking wastepaper treatment has the advantages of being low in cost, high in flocculating and precipitating efficiency, good in effect, less in dosage, small in environmental influence, good in performance stability, and green and environment-friendly in use.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a flocculant for papermaking wastewater and a preparation method thereof. Background technique [0002] The rapid development of modern industry has also caused pollution to the environment, especially the pollution of water by the paper industry has caused serious threats to human health and life, and has greatly damaged industries such as agriculture, forestry, animal husbandry, and fishery development of. Taking effective measures to treat papermaking wastewater is an inevitable requirement for the development of the papermaking industry and a necessary way to practice the sustainable development strategy. [0003] At present, the treatment methods for papermaking wastewater include tertiary treatment such as physicochemical, biological and advanced treatment. Physicochemical treatment process, namely coagulation and sedimentation is one of the most important tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C08F8/36C08F226/02C02F103/28
CPCC02F1/56C02F2103/28C08F8/36C08F226/02
Inventor 不公告发明人
Owner NINGBO DIYANG ELECTRONICS TECH
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