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Aluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant and preparation method thereof

A composite flocculant and aluminum chloride technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, sustainable biological treatment, etc., can solve problems such as solution instability, achieve good turbidity reduction effect, and store at room temperature Stable, high-performance results

Active Publication Date: 2021-01-08
神美科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is that disclosed in U.S. Patent No. 5,233,065, glacial acetic acid is gradually added in the basic aluminum chloride solution to obtain a transparent solution, but the solution is unstable and needs to be added with a glycolate stabilizer before application.

Method used

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  • Aluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant and preparation method thereof
  • Aluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant and preparation method thereof
  • Aluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1

[0035] In a 250ml three-neck flask with stirring, first add 17g of water, place it in a water bath heated at a constant temperature, set the temperature of the water bath to 90°C, and weigh 18g of solid AlCl 3 ·6H 2 O, added to the above-mentioned flask, stirred to dissolve. Take another 6.6g of NaOH solution with a mass concentration of 30%, put it into a constant pressure dropping funnel, and slowly add it dropwise to the solution, controlling the dropping time for 20-40min. Subsequently, 5 g of glacial acetic acid was weighed and added into the flask, and the temperature was kept at 90° C. for 30 min. Continue to drop 3.3g of NaOH solution with a mass concentration of 30wt%, control the dropping time for 10-20min, keep the temperature at 90°C and continue the reaction for 30-60min to obtain a transparent polymeric aluminum acetate-aluminum chloride flocculant aqueous solution, wherein, Al 2 o 3 The content is 7.6%, and the basicity is 41.3%.

preparation example 2

[0037]Add 15g of water to a 250ml three-neck flask with stirring, place it in a constant temperature heating water bath, set the temperature of the water bath to 60°C, and weigh 25g of solid AlCl 3 ·6H 2 O, add to the above-mentioned flask, fully stir to dissolve. Take another 10 g of NaOH solution with a mass concentration of 30%, put it into a constant pressure dropping funnel, and slowly add it dropwise to the solution for 20-40 minutes. Subsequently, 6 g of glacial acetic acid was weighed and added into the flask, and the temperature was kept at 60° C. for 30 min. Continue to drop 5g of NaOH solution with a mass concentration of 30% for 10-20min, keep the temperature at 60°C and continue the reaction for 30-60min to obtain a transparent polymeric aluminum acetate-aluminum chloride flocculant aqueous solution, wherein, Al 2 o 3 The content is 8.7%, and the basicity is 46.5%.

preparation example 3

[0039] Add 15g of water to a 250ml three-neck flask with stirring, place it in a constant temperature heating water bath, set the temperature of the water bath to 80°C, and weigh 25g of solid AlCl 3 ·6H 2 O, add to the above flask, fully stir to dissolve. Another 10g of sodium carbonate was weighed and slowly added into the solution for 20-40min. Subsequently, 8 g of glacial acetic acid was weighed and added into the flask, and the temperature was maintained at 80° C. for 30 min. Then weigh 7g of sodium carbonate, slowly add it into the solution for 10-20min, keep the temperature at 80°C and continue the reaction for 30-60min to obtain a transparent polymeric aluminum acetate-aluminum chloride flocculant aqueous solution, wherein, Al 2 o 3 The content is 9.1%, and the basicity is 48.2%.

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Abstract

The invention belongs to the technical field of sewage purification treatment materials, and particularly relates to a polyaluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant with dual functions of a flocculant and a carbon source, which can be used for purification treatment of natural water bodies, domestic sewage and industrial wastewater. The aluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant product is prepared by compounding a developed aluminum acetate-aluminum chloride copolymer and ferric chloride, and is prepared by controlling the ratio of the aluminum acetate-aluminum chloride copolymer to the ferric chloride, the ratio of the ferric chloride to an alkaline substance and the like. The aluminum acetate-aluminum chloride copolymer ferric chloride composite flocculant aqueous solution is applied to a biological treatment denitrification process, has double effects of nitrogen and carbon source removal and flocculation phosphorus removal, and has the characteristics of good turbidity reduction effect of an aluminum salt flocculant, high floc settling speed of an iron salt flocculant, easiness in separation and thelike as the flocculant.

Description

technical field [0001] The invention belongs to the technical field of sewage purification treatment materials, and specifically relates to an aluminum acetate-aluminum chloride copolymer-ferric chloride composite flocculant with dual functions of flocculant and carbon source, which can be used for natural water bodies, domestic sewage and industrial waste water Purification treatment. Background technique [0002] With the rapid development of science and technology and the continuous increase of population, the water resources that human beings depend on for survival are increasingly scarce, and they are facing the increasingly serious harm of water resource pollution. In order to save water resources and improve water utilization, it is necessary to carry out advanced treatment of industrial wastewater and domestic sewage to realize the recycling and reuse of water resources. In the sewage treatment process, two methods, microbial method and chemical agent, are commonly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54
CPCC02F1/5245C02F1/54Y02W10/10
Inventor 崔秀菊
Owner 神美科技有限公司
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