Flocculant capable of recycling dye and preparation method and application thereof

A flocculant and dye technology, applied in chemical instruments and methods, flocculation/precipitation water/sewage treatment, water pollutants, etc., can solve the problems of unfavorable recycling and troublesome processing, and achieve convenient and quick recycling, low moisture content, The effect of enhancing the adsorption force

Active Publication Date: 2020-06-19
湖州达立智能设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The form of flocculant is still mainly granules or powder. Although this form of flocculant acts quickly and is easy to operate, the follow-up treatment will be more troublesome and it is not conducive to recycling.
In addition, the recovery of dyes in printing and dyeing wastewater is also a difficult technical problem, and the report of using flocculants to recover dyes has not yet been found.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] Preparation of simulated printing and dyeing wastewater: add 250 mg of glucose, 1.5 mg of ferric chloride, 150 mg of ammonium sulfate, 20 mg of potassium dihydrogen phosphate, and 20 g of rhodamine B to each liter of deionized water, and use a homogenizer to homogenize at a speed of 7250 to 7750 rpm for 15 ~20min to obtain simulated printing and dyeing wastewater. Wastewater is blue-red. Rhodamine B is a dye, and each component in the simulated wastewater is related to the change of COD value. Except Rhodamine B, the other components have a greater and more direct impact on COD.

[0029] Flocculation performance test: add the flocculant of recyclable dyes into the simulated wastewater according to the addition amount of 5g / L, stir at a speed of 125-175rpm for 4-6min, wait for the flocculant to completely settle, and measure the concentration of the supernatant after treatment. COD, compared with the COD value of the original simulated printing and dyeing wastewater, th...

Embodiment 1

[0031] Dissolve 2.5 parts of graphene and 0.75 parts of titanate coupling agent TMC-201 in 400 parts of ethanol and 100 parts of N,N-dimethylformamide, ultrasonically disperse for 60 minutes, and filter with suction to obtain a modified dispersion. use;

[0032] After cutting the polyurethane sponge into uniform spherical pieces with a diameter of 3-4cm, place them in ethanol for ultrasonic cleaning for 12.5 minutes, and dry them at 50°C, then evenly arrange the cleaned sponge pieces in the modified dispersion liquid, dip into Take it out after 45 minutes, and quickly cure it at 180°C for 10 minutes to obtain a modified polyurethane sponge;

[0033] Grinding the dried corn stalks, coconut peat, and leaf humus (mass ratio 3:3:4) with a drug grinder, and then continue grinding to 400 mesh to obtain natural plant fibers;

[0034] Add 4 parts of polyethylene oxide and 3 parts of baking soda to 500 parts of deionized water, stir at a speed of 90rpm to fully dissolve, then slowly a...

Embodiment 2

[0039] Dissolve 0.5 parts of graphene and 0.15 parts of titanate coupling agent TMC-201 in 400 parts of ethanol and 100 parts of N,N-dimethylformamide, ultrasonically disperse for 60 minutes, and filter with suction to obtain a modified dispersion. With (compared with embodiment 1, the active ingredient of modified dispersion liquid reduces);

[0040] After cutting the polyurethane sponge into uniform spherical pieces with a diameter of 3-4cm, place them in ethanol for ultrasonic cleaning for 12.5 minutes, and dry them at 50°C, then evenly arrange the cleaned sponge pieces in the modified dispersion liquid, dip into Take it out after 45 minutes, and quickly cure it at 180°C for 10 minutes to obtain a modified polyurethane sponge;

[0041] Grinding the dried corn stalks, coconut peat, and leaf humus (mass ratio 3:3:4) with a drug grinder, and then continue grinding to 400 mesh to obtain natural plant fibers;

[0042] Add 4 parts of polyethylene oxide and 3 parts of baking soda...

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PUM

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Abstract

The invention discloses a flocculant capable of recycling dye, a preparation method and application thereof. The flocculant capable of recycling dye comprises, in parts by weight, 17-23 parts of modified polyurethane sponge, 6-10 parts of polyoxyethylene and 4-7 parts of natural plant fiber. The preparation method comprises the following steps of stirring and dissolving polyoxyethylene and bakingsoda, stirring and adding the natural plant fibers and the modified impregnation liquid, dipping the modified polyurethane sponge into the modified dipping solution, and drying. With the method, the dye in the wastewater can be easily recovered while the flocculant can be conveniently and rapidly recovered and utilized.

Description

technical field [0001] The invention belongs to the technical field of water treatment agents, and more specifically relates to a flocculant for recyclable dyes and a preparation method thereof. Background technique [0002] At present, most flocculants approach each other through their charged groups and difficult-to-separate particles with opposite charges in water, reduce their potential, make them in an unstable state, and use their polymerization properties to concentrate these particles, thereby physically or chemically Separated to achieve the purpose of treating water pollution. [0003] The form of flocculants is still mainly granule or powder. Although this form of flocculant acts quickly and is easy to operate, the follow-up treatment will be more troublesome and it is not conducive to recycling. In addition, the recovery of dyes in printing and dyeing wastewater is also a relatively difficult technical problem, and the report of using flocculants to achieve the ...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F1/28C02F101/30
CPCC02F1/285C02F1/56C02F2101/308
Inventor 刘水平
Owner 湖州达立智能设备制造有限公司
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