Efficient dye flocculant as well as preparation method and application thereof

A high-efficiency flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water pollutants, etc., can solve the problem of single chemical structure of polyacrylamide, slow settling speed, poor capture ability of dye molecules, etc. problem, to achieve the effect of efficient capture and rapid settlement

Active Publication Date: 2018-03-23
山东德静能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical structure of polyacrylamide is relatively simple, and there are problems such as poor abi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] It is a high-efficiency dye flocculant prepared by the following steps:

[0022] Step 1 Synthesis of polymer backbone PHAM

[0023] Take 1 part of azobisisobutyronitrile initiator, 100 parts of methylolacrylamide (HAM), and 100 parts of methanol, and carry out polymerization reaction at 70° C. under nitrogen protection for 1 hour to obtain a degree of polymerization (DP) of 35 polymethylolacrylamide (PHAM);

[0024] Step 2 Synthesis of cationic polymer side chain PDMC-COOH, anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0025]Synthesis of cationic polymer side chain PDMC-COOH: get 2 parts of azodicyanovaleric acid initiator, 100 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 100 parts of water , under the protection of nitrogen, carry out free radical polymerization at 65° C. for 2 hours to obtain a cationic polymer side chain PDMC-COOH with a degree of polymerization (DP) of 3...

Embodiment 2

[0035] It is a high-efficiency dye flocculant prepared by the following steps:

[0036] Step 1 Synthesis of PHAM polymer backbone

[0037] Get 2 parts of CuBr of 2 parts of ethyl bromoisobutyrate initiator and 2 parts of 4,4-linked 2-picoline (BPy), 100 parts of methylolacrylamide (HAM), 150 parts Methanol was polymerized at 60°C for 1 hour under the protection of nitrogen to obtain polymethylolacrylamide (PHAM) with a degree of polymerization (DP) of 100;

[0038] Step 2 Synthesis of cationic polymer side chain PDMC-COOH, anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0039] Synthesis of cationic polymer side chain PDMC-COOH: get 2 parts of azodicyanovaleric acid initiator, 200 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 200 parts of water , carry out free radical polymerization at 60° C. for 3 hours under the protection of nitrogen to obtain PDMC-COOH with a degree of polymerizat...

Embodiment 3

[0049] It is a high-efficiency dye flocculant prepared by the following steps:

[0050] Step 1 Synthesis of PHAM polymer backbone

[0051] Get 2 parts of ethyl bromoisobutyrate initiator, 2 parts of CuBr and 2 parts of 4,4-linked 2-picoline (BPy), 100 parts of methylolacrylamide (HAM), 50 parts Parts of methanol were polymerized for 9 hours at 70°C under nitrogen protection to obtain polymethylolacrylamide (PHAM) with a degree of polymerization (DP) of 185;

[0052] Step 2 Synthesis of cationic polymer side chain PDMC-COOH, anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0053] Synthesis of cationic polymer side chain PDMC-COOH: get 2 parts of azodicyanovaleric acid initiator, 200 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 100 parts of water , carry out free radical polymerization at 65° C. under nitrogen protection for 6 hours to obtain PDMC-COOH with a degree of polymerization (D...

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Abstract

The invention relates to an efficient dye flocculant as well as a preparation method and an application thereof. The efficient dye flocculant is characterized being prepared from a polymer main chainPHAM (poly(hydroxymethyl acrylamide)), cationic polymeric side chain PDMC-COOH (polymethacryloxyethyltrimethyl ammonium chloride containing carboxyl at the tail end), anionic polymeric side chain precursor PtBMA-COOH (poly(tert-butylmethacrylate) containing carboxyl at the tail end), functional polymeric side chain precursor PNVF-COOH (poly(N-vinylformamide) containing carboxyl at the tail end), DMF (dimethylformamide) solvent, a catalyst, namely, NHS (N-hydroxysuccinimide), EDC.CH3I (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide methiodide), potassium hydroxide and CDTAD (cyclohexanediamine tetraacetic acid dianhydride), and the efficient dye flocculant is used for treating dye wastewater and artistic coating wastewater drained in the dye synthesis or dyeing and finishing process. The efficient dye flocculant has the advantages of being high in trapping capability and settling speed, capable of treating complexing heavy metal ions, trapping dye molecules and complexing heavy metal ions in a few seconds and growing into large settling particles rapidly to achieve the purpose of rapid dye separation, simple to operate, low in treatment cost, high in adaptability and the like.

Description

technical field [0001] The invention belongs to the field of water treatment technology and polymer functional materials, and specifically relates to a high-efficiency dye flocculant and its preparation method and application. It is mainly used in dye wastewater and art paint wastewater discharged during dye synthesis or dyeing and finishing processes. application, to achieve simultaneous removal of cationic dye molecules, anionic dyes and complexed heavy metal ions in dye wastewater. Background technique [0002] In recent years, my country's annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounts for 51%, while dye wastewater accounts for 35% of the total industrial wastewater discharge, and it is increasing at a rate of 1% year by year. Dye wastewater mainly comes from dye synthesis and dye use enterprises, and is composed of dyes and auxiliaries discharged during the synthesis or dyeing and finishing process. With the rapid dev...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F120/58C08F120/34C08F120/18C08F126/02C02F1/56C02F101/20C02F101/30
CPCC02F1/56C02F2101/20C02F2101/308C08F120/18C08F120/34C08F120/58C08F126/02C08G81/021
Inventor 刘锋陈燕舞霍应鹏洪丹张浥琨郭志杰唐秋实彭琦邓荣治
Owner 山东德静能源科技有限公司
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