Flocculating agent for chemical wastewater and preparation method thereof

A technology for chemical wastewater and flocculant, which is applied in chemical instruments and methods, water treatment parameter control, flocculation/sedimentation water/sewage treatment, etc. Low cost, strong adsorption and capture ability, and high broad-spectrum effect

Inactive Publication Date: 2016-08-17
LINYI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polyacrylamide, a polymer flocculant commonly used in the market, adopts a relatively single monomer structure, and the product has a narrow application area, which cannot meet the requirements of different water quality in different industries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A flocculant for chemical waste water, the raw materials according to parts by weight include: 20 parts of nonionic monomers, 3 parts of anionic monomers, 10 parts of cationic monomers, 2 parts of dimethylaminoethyl methacrylate monomers, 0.05 parts of initiator parts, 0.3 parts of ammonium persulfate, 120 parts of deionized water, and 20 parts of fly ash.

[0025] The preparation method of described chemical industry wastewater flocculant, concrete steps are as follows:

[0026] (1) Weigh each raw material according to parts by weight;

[0027] (2) Mix fly ash and hydrochloric acid solution in an ultrasonic environment, and treat at 40°C for 1 hour to obtain modified fly ash. The weight concentration of the hydrochloric acid solution is 32%, and the amount of hydrochloric acid solution is enough to wet the fly ash. Ultrasonic frequency is 60KHz, power density is 50w / L;

[0028] (3) Place the dimethylaminoethyl methacrylate monomer at 50°C and a negative pressure of 0...

Embodiment 2

[0032] A flocculant for chemical waste water, the raw materials according to parts by weight include: 22 parts of nonionic monomers, 3.5 parts of anionic monomers, 12 parts of cationic monomers, 2.5 parts of dimethylaminoethyl methacrylate monomers, 0.06 parts of initiator parts, 0.35 parts of ammonium persulfate, 125 parts of deionized water, and 25 parts of fly ash.

[0033] The preparation method of described chemical industry wastewater flocculant, concrete steps are as follows:

[0034] (1) Weigh each raw material according to parts by weight;

[0035] (2) Mix fly ash and hydrochloric acid solution in an ultrasonic environment, and treat at 50°C for 1.5 hours to obtain modified fly ash. The weight concentration of the hydrochloric acid solution is 33%, and the amount of hydrochloric acid solution is enough to wet the fly ash , the ultrasonic frequency is 65KHz, and the power density is 55w / L;

[0036] (3) Place the dimethylaminoethyl methacrylate monomer at 55°C and a n...

Embodiment 3

[0040] A flocculant for chemical waste water, the raw materials according to weight parts include: 25 parts of nonionic monomers, 4 parts of anionic monomers, 15 parts of cationic monomers, 3 parts of dimethylaminoethyl methacrylate monomers, 0.07 parts of initiator parts, 0.4 parts of ammonium persulfate, 130 parts of deionized water, and 30 parts of fly ash.

[0041] The preparation method of described chemical industry wastewater flocculant, concrete steps are as follows:

[0042] (1) Weigh each raw material according to parts by weight;

[0043] (2) Mix fly ash and hydrochloric acid solution in an ultrasonic environment, and treat at 60°C for 2 hours to obtain modified fly ash. The weight concentration of the hydrochloric acid solution is 34%, and the amount of hydrochloric acid solution is enough to wet the fly ash. Ultrasonic frequency is 70KHz, power density is 60w / L;

[0044] (3) Place the dimethylaminoethyl methacrylate monomer at 60°C and a negative pressure of 0.096...

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Abstract

The invention discloses a flocculating agent for chemical wastewater and a preparation method thereof. The flocculating agent for chemical wastewater comprises the following raw materials in parts by weight: 20-30 parts of nonionic monomer, 3-5 parts of anionic monomer, 10-20 parts of cationic monomer, 2-4 parts of dimethylaminoethyl methacrylate, 0.05-0.09 part of initiator, 0.3-0.5 part of ammonium persulfate, 120-140 parts of deionized water and 20-40 parts of fly ash, wherein the nonionic monomer includes acrylamide, methacrylamide and nitrogen substitute thereof. The flocculating agent disclosed by the invention has the advantages of higher density of charged groups, stronger adsorbing and capturing abilities against suspended particles, high-temperature resistance, high-salt resistance and acid-base resistance; compared with other flocculating agents, the flocculating agent has the characteristics of high broad-spectrum property, good stability and good flocculating effect; and in sewage treatment, the flocculating agent has better decolorizing effect and DOD removal effect and realizes comprehensive control of sewage, the chemical treatment effect on sewage is enhanced, and the waste fly ash is turned into wealth while comprehensive utilization is realized.

Description

technical field [0001] The invention relates to a chemical reagent, in particular to a flocculant for chemical waste water and a preparation method thereof. Background technique [0002] Chemical industry includes organic chemical industry and inorganic chemical industry. There are various chemical products with complex components. The wastewater discharged from chemical plants is called chemical wastewater. There are many kinds of chemical wastewater, most of which are highly toxic and not easy to purify. They have a certain accumulation in organisms and have obvious oxygen-consuming properties in water bodies, which can easily deteriorate water quality. [0003] The water quality composition of chemical wastewater is complex, the water quality composition is complex, and there are many by-products. The reaction raw materials are often solvent-like substances or compounds with ring structures, which increases the difficulty of wastewater treatment. Due to the incomplete re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/28
CPCC02F1/281C02F1/52C02F1/56C02F2209/08C02F2209/10
Inventor 张美
Owner LINYI UNIVERSITY
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