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Modified aluminum polychlorid for sewage treatment and preparation method thereof

A polyaluminum chloride and sewage treatment technology, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of poor removal effect of heavy metal ions, polyaluminum chloride Flocculation ability is limited and other problems, to achieve good adsorption, increase flocculation ability, improve the effect of flocculation rate

Inactive Publication Date: 2019-01-08
CHANGSHA XIAORU INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the above method, the invention can make the waste settling speed of polyaluminum chloride faster and the effect better in the wastewater treatment process, but the flocculation ability of the improved polyaluminum chloride provided by the invention is limited, and the effect on the removal of heavy metal ions is limited. bad

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  • Modified aluminum polychlorid for sewage treatment and preparation method thereof

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[0023] A method for preparing the above-mentioned improved polyaluminum chloride for sewage treatment, comprising the following steps: (1) putting hydrochloric acid in the reactor, adding bauxite at the same time, reacting for 10-20min, and then supplementally heating the reactor to 95- React at 105°C for 3-5 hours, add sodium chlorate and keep warm for 2-4 hours, collect the polyaluminum chloride body by precipitation or filtration; (2) mix the polyaluminum chloride body, industrial salt, soda powder, and hydroxyethyl cellulose Sufficiently mix the element, corn oligopeptide powder and polyether modified organosiloxane, and grind to 200 mesh or more.

[0024] The consumption of described bauxite is 15-20% of hydrochloric acid. The concentration of the hydrochloric acid is 20-30%.

Embodiment 1

[0027] An improved polyaluminum chloride for sewage treatment, comprising the following raw materials: 49 parts of polyaluminum chloride body, 23 parts of sodium chlorate, 11.5 parts of industrial salt, 16 parts of soda powder, 13 parts of hydroxyethyl cellulose, corn 6 parts of oligopeptide powder and 3 parts of polyether modified organosiloxane.

[0028] A method for preparing the above-mentioned improved polyaluminum chloride for sewage treatment, comprising the following steps: (1) putting hydrochloric acid in the reactor, adding bauxite at the same time, reacting for 15 minutes, and then supplementally heating the reactor to 100°C for reaction 4 hour, add sodium chlorate and continue to insulate for 3 hours, collect the polyaluminum chloride body through precipitation; The modified organosiloxane is fully mixed and ground to more than 200 mesh.

[0029] The consumption of described bauxite is 17.5% of hydrochloric acid. The concentration of the hydrochloric acid is 25%....

Embodiment 2

[0031] An improved polyaluminum chloride for sewage treatment, comprising the following raw materials: 42 parts of polyaluminum chloride body, 26 parts of sodium chlorate, 10 parts of industrial salt, 19 parts of soda powder, 10 parts of hydroxyethyl cellulose, corn 8 parts of oligopeptide powder and 2 parts of polyether modified organosiloxane.

[0032] A method for preparing the above-mentioned improved polyaluminum chloride for sewage treatment, comprising the following steps: (1) putting hydrochloric acid in the reactor, adding bauxite at the same time, reacting for 20 minutes, and then supplementally heating the reactor to 95°C for 5 minutes hour, add sodium chlorate and continue to insulate for 2 hours, collect the polyaluminum chloride body through filtration; The modified organosiloxane is fully mixed and ground to more than 200 mesh.

[0033] The consumption of described bauxite is 15% of hydrochloric acid. The concentration of the hydrochloric acid is 30%.

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Abstract

The invention discloses modified aluminum polychlorid for sewage treatment and a preparation method thereof. The modified aluminum polychlorid is prepared from the following raw materials: an aluminumpolychlorid body, sodium chlorate, industrial salt, soda ash, hydroxyethyl cellulose, corn oligopeptide powder and polyether modified organosiloxane; a ratio of the hydroxyethyl cellulose to the cornoligopeptide powder to the polyether modified organosiloxane is (10-16):(4-8):(2-4). The preparation method comprises reaction, polymerization, mixing and the like. By taking the hydroxyethyl cellulose, the corn oligopeptide powder and the polyether modified organosiloxane as a reinforcing system, the flocculation capacity and the heavy metal ion removal rate of the modified aluminum polychloridfor sewage treatment are improved.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an improved polyaluminum chloride for sewage treatment and a preparation method thereof. Background technique [0002] Polyaluminum chloride (hereinafter referred to as PAC) is a commonly used high-efficiency water treatment additive, and aluminum-containing raw materials such as calcium aluminate powder or bauxite are important raw materials for its production. Polyaluminum chloride is a new water purification material, inorganic polymer coagulant, also referred to as polyaluminum, English abbreviation as PAC, produced due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions Inorganic polymer water treatment agent with larger molecular weight and higher charge. [0003] The Chinese patent with application number 201410576854.4 discloses an improved polyaluminum chloride for sewage treatment. The improved polyaluminum hydride is composed of pol...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/62
CPCC02F1/5245C02F1/5263C02F1/5272C02F1/62
Inventor 不公告发明人
Owner CHANGSHA XIAORU INFORMATION TECH CO LTD
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