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Method for directly producing polymeric aluminium chloride additive by employing calcium hypochlorite powder

A technology of polyaluminum chloride and calcium chlorate, applied in aluminum chloride, aluminum halide, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of high yield of waste residue and sludge, long intermediate reaction time, and labor-intensive employees. It can improve the labor environment and labor intensity of employees, reduce the color and luster, and reduce the labor intensity of employees.

Inactive Publication Date: 2008-06-18
HUATAI GROUP
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AI Technical Summary

Problems solved by technology

[0002] Polyaluminum chloride is widely used as a sewage treatment agent in sewage treatment. The existing method of producing polyaluminum chloride treatment agent includes bauxite, calcium aluminate powder, and hydrochloric acid according to a certain process from the composition of raw materials. conditions, the final treatment agent contains a large amount of silt as the bauxite raw material itself, and the intermediate reaction time is long, resulting in a high output rate of waste residue and waste sludge after treatment, high labor intensity of workers and high color of the product Defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] (1), add 10 tons of water, steam heating 60. C was maintained for 1 hour, 10 tons of hydrochloric acid was added, and the steam was turned off.

[0015] (2), slowly drop into 4 tons of calcium aluminate powder, add 5 tons of water simultaneously, react 1 hour.

[0016] (3) Add 6 tons of hydrochloric acid, slowly add 3.5 tons of calcium aluminate powder, add 6 tons of water at the same time, turn on the steam to heat, and keep the temperature at 100-102°C for 8 hours.

[0017] (4) After 2 hours of reaction, add calcium aluminate powder (about 0.15-0.3 tons, 0.05 tons every 5 minutes) and water (about 3 tons) according to the pH value and Baume degree. , the final pH value is controlled at 2.5-2.7 Baume and controlled at 27-28.

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PUM

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Abstract

The invention relates to a method of utilizing calcium chlorate powder to directly produce aluminum chloride treatment agent in sewage treatment agent production field. 1. 10 weight water is added, steam is heated at not below 60 DEG C, heating time is 0.5-1.5h, 10 weigh hydrochloric acid is added, and the steam is closed; 2. 4-4.5 weight calcium aluminate powders are added slowly, simultaneously 5 weight water is added, reaction time is 0.5-1.5h; 3. 6 weigh hydrochloric acid is added, the steam is opened for warming up, the temperature is kept at 100-102 DEG C, reaction time is 7-8h, finally PH value is controlled at 2.5-2.7, baume degree is controlled at 27-28. The process of the invention uses single raw materials for production, the reaction time of the process is 2h less than that of prior process, so as to lower labor intensity of staff, reduce environmental pollution, thereby facilitating sewage treatment effect and improving labor intensity and environment.

Description

technical field [0001] The invention relates to a method for directly producing polyaluminum chloride treatment agent by using calcium chlorate powder in the technical field of sewage treatment agent production. Background technique [0002] Polyaluminum chloride is widely used as a sewage treatment agent in sewage treatment. The existing method of producing polyaluminum chloride treatment agent includes bauxite, calcium aluminate powder, and hydrochloric acid according to a certain process from the composition of raw materials. conditions, the final treatment agent contains a large amount of silt as the bauxite raw material itself, and the intermediate reaction time is long, resulting in a high output rate of waste residue and waste sludge after treatment, high labor intensity of workers and high color of the product Defects. Contents of the invention [0003] The object of the present invention is to provide a method for directly producing polyaluminum chloride treatmen...

Claims

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Application Information

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IPC IPC(8): C01F7/56C02F1/52
Inventor 刘桂林赵海峰孙公立李武
Owner HUATAI GROUP
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