Method for preparing polyaluminium sulfatochloride water treatment agent

A technology of aluminum chloride sulfate and water treatment agent, applied in water/sewage treatment, chemical instruments and methods, adsorbed water/sewage treatment, etc., can solve the problems of unsatisfactory flocculation effect, complicated preparation process, poor product stability, etc. To achieve the effect of improving flocculation effect, simple preparation process and low cost

Inactive Publication Date: 2020-12-29
广西锋盛环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyaluminum sulfate chloride (PACS) currently provided still has some deficiencies such as unsatisfactory flocculation effect, poor product stability, weak adsorption performance, and complicated preparation process.

Method used

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  • Method for preparing polyaluminium sulfatochloride water treatment agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing polymeric aluminum chloride water treatment agent, comprising the steps:

[0024] (1) According to the following weight ratio, 13 tons of aluminum hydroxide and 18 tons of hydrochloric acid were reacted at 135°C and 0.5MPa high temperature and high pressure for 3h to obtain aluminum chloride liquid;

[0025] (2) Add 12 tons of aluminum sulfate liquid and 16 tons of water to the aluminum chloride liquid and react for 1.5h at a temperature of 80 ° C, then add polyethylene glycol 60030kg and cetyltrimethylammonium bromide 35kg at the temperature To react at 100 ° C for 1 h to obtain a mixed solution of aluminum sulfate chloride;

[0026] (3) 70kg of chitosan was added to the aluminum sulfate chloride mixed solution, heated to 60°C and stirred for 40min, then filtered by pressure, and dried with supercritical fluid, and the drying took carbon dioxide as a drying medium at a temperature of 40°C , and drying under the pressure of 8MPa to obtain a water...

Embodiment 2

[0029] A method for preparing polymeric aluminum chloride water treatment agent, comprising the steps:

[0030] (1) According to the following weight ratio, 10 tons of aluminum hydroxide and 16 tons of hydrochloric acid were reacted at 140°C and 0.4MPa high temperature and high pressure for 2.5h to obtain aluminum chloride liquid;

[0031] (2) Add 14.5 tons of aluminum sulfate liquid and 18 tons of water to the aluminum chloride liquid and react for 2 h at a temperature of 70 ° C, then add 60020 kg of polyethylene glycol and 30 kg of cetyltrimethyl ammonium bromide at a temperature of The reaction was carried out at 120 °C for 1.5 h to obtain a mixed solution of aluminum sulfate chloride;

[0032] (3) 60kg of chitosan was added to the aluminum sulfate chloride mixed solution, heated to 60°C and stirred for 40min, then filtered by pressure, and dried with supercritical fluid, and the drying took carbon dioxide as a drying medium at a temperature of 50°C , and drying under the ...

Embodiment 3

[0035] A method for preparing polymeric aluminum chloride water treatment agent, comprising the steps:

[0036] (1) According to the following weight ratio, 14 tons of aluminum hydroxide and 20 tons of hydrochloric acid were reacted at 140° C. and 0.5MPa high temperature and high pressure for 3.5h to obtain aluminum chloride liquid;

[0037] (2) Add 12 tons of aluminum sulfate liquid and 17 tons of water to the aluminum chloride liquid and react for 1.5h at a temperature of 80°C, then add 60045kg of polyethylene glycol and 25kg of cetyltrimethylammonium bromide at a temperature of 80°C. The reaction was carried out at 110 °C for 2 h to obtain a mixed solution of aluminum sulfate chloride;

[0038] (3) 50kg of chitosan was added to the aluminum sulfate chloride mixed solution, heated to 70°C and stirred for 60min, then filtered by pressure and dried with supercritical fluid, and the drying took carbon dioxide as a drying medium at a temperature of 60°C , and drying under the p...

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Abstract

The invention discloses a method for preparing a polyaluminum sulfatochloride water treatment agent, which comprises the following steps: reacting 10-15 parts by weight of aluminum hydroxide and 15-20parts by weight of hydrochloric acid at high temperature and high pressure for 2-4 hours; adding 10-15 parts of aluminum sulfate liquid and 15-20 parts of water into aluminum chloride liquid, conducting reaction for 1-2 h, then adding 0.01-0.05 part of polyethylene glycol and 0.01-0.05 part of hexadecyltrimethylammonium bromide, and conducting reaction for 1-2 h, so as to obtain an aluminum sulfate and aluminum chloride mixed solution; and adding 0.05-0.10 part of chitosan, conducting heating and stirring for 30-60 minutes, and carrying out filter pressing, drying and packaging to obtain thepolyaluminium sulfatochloride water treatment agent. The polyaluminium sulfatochloride water treatment agent prepared by the invention has a large specific surface area and good adsorption performance, improves the flocculation performance and flocculation effect, has good stability, can quickly remove pollutants such as turbidity, chroma, heavy metal ions, COD and the like, and has a wide application prospect in sewage or drinking water treatment.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for preparing a polyaluminum sulfate chloride water treatment agent. Background technique [0002] The flocculation process is one of the key links in modern urban water supply and industrial wastewater treatment processes. It can not only remove sensory indicators such as turbidity and chromaticity of raw water, but also remove various toxic and harmful pollutants. As the most widely used flocculant in water treatment, polyaluminum is widely used in drinking water, industrial wastewater and domestic sewage treatment. [0003] The current products of polyaluminum flocculants mainly include polyaluminum chloride (PAC), polyaluminum sulfate (PAS), polyaluminum chloride sulfate (PACS), polyaluminum chloride phosphate (PPAC), polyaluminum ferric chloride sulfate (PAFCS) ), polyaluminum silicate (PASI). At present, the most widely used and studied polyaluminum chlo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/28C02F1/56C02F1/54
CPCC02F1/5236C02F1/281C02F1/56C02F1/54
Inventor 韦晨熙农成龙黄海林陆锋
Owner 广西锋盛环保科技有限公司
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