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Water-treating agent for desizing sewage

A technology for desizing wastewater and treatment agents, applied in the direction of adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, chemical instruments and methods, etc., can solve the problems of environmental pollution and poor biodegradability of PVA slurry, and achieve Reduce pollution, good removal effect, and reduce the effect of PVA content

Inactive Publication Date: 2003-01-15
翁林兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor biodegradability of PVA slurry, its BOD 5 / COD CR The value is only 0.1, the wastewater with PVA slurry is discharged directly, which will pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Select 20 parts of polyaluminum chloride, 20 parts of silicon dioxide, 30 parts of sodium silicate, 5 parts of aluminum oxide, 1 part of magnesium sulfate heptahydrate, 1 part of boric acid, 0.1 part of octadecane trimethylammonium bromide and 0.2 parts of chitin deacetate,.

[0018] Put polyaluminum chloride, sodium silicate, and chitin deacetate into the reactor, and stir for 15 minutes at a temperature of 15-25°C to dissolve them; then, add octadecyltrimethyl bromide Melt ammonium, and raise the temperature to 30-70°C, continue to stir for 30 minutes, when the foam of the material increases and becomes viscous, add boric acid and magnesium sulfate heptahydrate, continue stirring for 60 minutes, stop stirring and stand still for 120-720 minutes Then, add silicon dioxide and aluminum oxide, heat up to 40°C, and continue to stir for 60 minutes; finally, dehydrate with a centrifuge, dry in an oven at 60°C, crush and grind with a pulverizer, 120-180 mesh Sieve through a ...

Embodiment 2

[0020] Select 30 parts of polyaluminum chloride, 25 parts of silicon dioxide, 20 parts of sodium silicate, 8 parts of aluminum oxide, 1.5 parts of magnesium sulfate heptahydrate, 0.5 parts of boric acid, 0.3 parts of octadecane trimethylammonium bromide and 0.1 parts of chitin deacetate.

[0021] Put polyaluminum chloride, sodium silicate, and chitin deacetate into the reactor, and stir for 15 minutes at a temperature of 15-25°C to dissolve them; then, add octadecyl trimethyl bromide ammonium, and heat up to 30-70°C, continue to stir for 30 minutes, when the foam of the material increases and becomes viscous, add boric acid and magnesium sulfate heptahydrate, continue stirring for 60 minutes, stop stirring and stand still for 120-720 minutes; Then, add silicon dioxide and aluminum oxide, raise the temperature to 40°C, and continue to stir for 60 minutes; finally, dehydrate with a centrifuge, dry in an oven at 60°C, crush and grind with a pulverizer, and sieve 120-180 mesh Sie...

Embodiment 3

[0023] Select 39 parts of polyaluminum chloride, 16 parts of silicon dioxide, 25 parts of sodium silicate, 10 parts of aluminum oxide, 1.9 parts of magnesium sulfate heptahydrate, 0.8 parts of boric acid, 0.2 parts of octadecane trimethylammonium bromide and 0.3 parts of chitin deacetate.

[0024] Put polyaluminum chloride, sodium silicate, and chitin deacetate into the reactor, and stir for 15 minutes at a temperature of 15-25°C to dissolve them; then, add octadecyl trimethyl bromide ammonium, and heat up to 30-70°C, continue to stir for 30 minutes, when the foam of the material increases and becomes viscous, add boric acid and magnesium sulfate heptahydrate, continue stirring for 60 minutes, stop stirring and stand still for 120-720 minutes; Then, add silicon dioxide and aluminum oxide, raise the temperature to 40°C, and continue to stir for 60 minutes; finally, dehydrate with a centrifuge, dry in an oven at 60°C, crush and grind with a pulverizer, and sieve through a 120-18...

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PUM

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Abstract

A water treating agent for the desizing sewage containing PVA is prepared from aluminium polychloride (20-40 Wt portions), SiO2 (15-25), sodium silicate (20-30), Al2O3 (5-10), bitter salt (0.5-2), boric acid (0.5-1), ammonium octadecyltrimethyl bromide (0.1-0.3) and deacetic chitin (0.1-0.3). Its advantage is high effect on removing PVA.

Description

technical field [0001] The invention relates to a sewage treatment agent. Specifically, it is a treatment agent for removing PVA in wastewater. It is suitable for the treatment of gray fabric desizing wastewater. Background technique [0002] In the textile industry, in order to increase the warp strength and prevent thread breakage, it is mostly treated with PVA size before it is woven into gray cloth. And before the gray cloth is dyed or printed, the PVA size on it must be removed through desizing treatment. After the desizing treatment, the PVA size is separated from the gray cloth and enters the desizing wastewater. Due to the poor biodegradability of PVA slurry, its BOD 5 / COD CR The value is only 0.1, and the wastewater with PVA slurry is discharged directly, which will pollute the environment. Contents of the invention [0003] The object of the present invention is to provide a kind of PVA desizing wastewater treatment agent. The treatment agent has a good e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/01C02F1/28C02F1/52C02F1/54C02F1/56
Inventor 吴海根翁林兴
Owner 翁林兴
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