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Floating absorbent and preparation method and application thereof

A kind of floating absorbent and floating suction technology, which is applied in the field of environmental engineering, can solve the problems of difficult separation of dissolved pollutants after treatment, and achieve the effects of adsorption and rapid separation, adsorption and separation, and high effective utilization

Inactive Publication Date: 2019-03-12
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem of difficult separation of soluble pollutants in printing and dyeing wastewater in the prior art, and to provide a floating absorbent that can effectively treat soluble pollutants, and The treated pollutants can float up, so as to realize the rapid separation of pollutants and water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S1. Weigh 10g of hollow glass microspheres and place them in a 500mL beaker, then add 300mL of NaOH solution with a concentration of 0.5mol / L, stir in a constant temperature water bath at 80°C at a speed of 100 rpm for 1.5h, and wait until white After the suspension was cooled, it was repeatedly washed with ultrapure water and filtered until the filtrate was neutral. The resulting white solid was dried in a constant temperature drying oven at 60° C. for 24 hours to obtain a white powder.

[0033]S2. Weigh 10g of the white powder obtained in S1, put it in a 500mL beaker, add 150mL of ultrapure water, 150mL of absolute ethanol and 10mL of silane coupling agent KH550, and place it in a constant temperature water bath at 80°C at 100 rpm Stir at high speed for 2 hours. After the white suspension is cooled, wash it with ultrapure water and filter it. The obtained white solid is dried in a constant temperature drying oven at 60°C for 24 hours, and the product obtained is a whit...

Embodiment 2

[0036] S11. Weigh 10g of hollow glass microspheres and place them in a 500mL beaker, then add 300mL of NaOH solution with a concentration of 0.5mol / L, stir in a constant temperature water bath at 80°C at a speed of 100 rpm for 1.5h, and wait until white After the suspension was cooled, it was repeatedly washed with ultrapure water and filtered until the filtrate was neutral. The resulting white solid was dried in a constant temperature drying oven at 60° C. for 24 hours to obtain a white powder.

[0037] S12. Weigh 10g of the white powder obtained in S1, put it in a 500mL beaker, add 150mL of ultrapure water, 150mL of absolute ethanol and 10mL of silane coupling agent KH550, and place it in a constant temperature water bath at 80°C at 100 rpm Stir at a high speed for 2 hours. After the white suspension is cooled, wash it with ultrapure water and filter it. The obtained white solid is dried in a constant temperature drying oven at 60°C for 24 hours, and the product obtained is a...

Embodiment 3

[0041] S11. Weigh 10g of hollow glass microspheres and place them in a 500mL beaker, then add 300mL of NaOH solution with a concentration of 0.5mol / L, stir in a constant temperature water bath at 80°C at a speed of 100 rpm for 2h, and wait for the white suspension After the liquid was cooled, it was washed repeatedly with ultrapure water and filtered until the filtrate was neutral. The obtained white solid was dried in a constant temperature drying oven at 60° C. for 24 hours to obtain a white powder.

[0042] S12. Weigh 10g of the white powder obtained in S1, put it in a 500mL beaker, add 150mL of ultrapure water, 150mL of absolute ethanol and 10mL of silane coupling agent KH550, and place it in a constant temperature water bath at 80°C at 100 rpm Stir at high speed for 2 hours. After the white suspension is cooled, wash it with ultrapure water and filter it. The obtained white solid is dried in a constant temperature drying oven at 60°C for 24 hours, and the product obtained ...

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Abstract

The invention discloses a floating absorbent and a preparation method and application thereof. The floating absorbent comprises hollow glass beads and a silane coupling agent, wherein the silane coupling agent is grafted onto the outer surface of each hollow glass bead; the silane coupling agent is a silane coupling agent with specificity on dye; the mass ratio of the hollow glass beads to the silane coupling agent is (1 to 2):1. The preparation method comprises the following steps of firstly, pretreating the hollow glass beads; enabling the pretreated hollow glass beads to react with the silane coupling agent; finally, drying, so as to obtain the floating absorbent. The floating absorbent has the advantages that the dissolvable pollutants can be effectively treated; the floating absorbentenriching the pollutants can stably float up, so as to quickly separate the pollutants and a water body.

Description

technical field [0001] The invention belongs to the field of environmental engineering, and in particular relates to a floating absorbent and its preparation method and application. Background technique [0002] In the process of water treatment, how to separate the enriched pollutants economically and efficiently is very important. Researchers have made a lot of efforts on how to improve the separation of water treatment agents. In past studies, precipitation was usually used to separate them. Embedded Fe in water treatment agents has emerged in recent years 3 o 4 nanoparticles, and are separated by magnetic separation with the help of an external magnetic field; but due to Fe 3 o 4 There is unstable divalent iron in the iron, which is easily oxidized and loses its magnetism, resulting in unstable processing. Aerobic granular sludge is also used as a water treatment agent. The advantage is that it can remove organic matter and has a compact structure and high sediment...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/26B01J20/30C02F1/28C02F101/30C02F101/36C02F101/38
CPCB01J20/264B01J20/28011C02F1/285C02F2101/308C02F2101/36C02F2101/38C02F2101/40
Inventor 郑怀礼安延严张世欣肖伟龙余祉双孙强
Owner CHONGQING UNIV
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