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Formula and process for producing polymeric aluminum chloride

A polyaluminum chloride, production formula technology, applied in the direction of aluminum chloride, aluminum halide, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of low COD removal rate, high moisture content of sludge, non-recyclable, etc. Achieve the effects of reducing moisture content, improving the use effect, and improving the COD removal rate

Inactive Publication Date: 2009-09-16
DONGYING HUATAI FINE CHEM
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AI Technical Summary

Problems solved by technology

[0002] The current formula produces more thin sludge produced by polyaluminum chloride, resulting in high moisture content in the sludge, which cannot be reused and forms a large amount of waste; and the COD removal rate in papermaking wastewater treatment is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A production formula and process of polyaluminum chloride, the production formula is 4.25 tons of bauxite, 5 tons of calcium aluminate powder, 14.2 tons of hydrochloric acid, and 18 tons of water.

[0014] The production process is:

[0015] 1) Add 5 tons of tap water to the reaction tank, add 14.2 tons of 31% hydrochloric acid at the same time, start stirring and mixing evenly; turn on the steam to raise the temperature, and put 4.25 tons of bauxite at the same time, start timing when the temperature reaches 95°C, and the reaction time is 40-60 minutes ;

[0016] 2) After the reaction in step 1) is completed, keep the temperature above 75°C, add 5 tons of calcium aluminate powder while adding 8 tons of tap water, after the addition of tap water and calcium aluminate powder, keep the temperature above 95°C for reaction 2 Hour;

[0017] 3) After the reaction in step 2) is completed, add 5 tons of tap water, adjust the Al2O3 content to 10.0%, pour it into a settling tan...

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Abstract

The invention relates to a formula and a process for producing polymeric aluminum chloride. 5 tons of running water are added into a reaction tank and 14.2 tons of 31 percent hydrochloric acid are added into the reaction tank at the same time, and stirring is started for uniformly mixing; steam heating is started, 4.25 tons of bauxite are put at the same time, the timing is started when the temperature reaches 95 DEG C, and the reaction time is 40 to 60 minutes; after the reaction completes, the temperature is kept above 75 DEG C, 5 tons of calcium aluminum powder are put when 8 tons of running water are added, and the temperature is kept above 95 DEG C after the addition of the running water and the calcium aluminum powder completes for reaction for 2 hours; after the reaction completes, 5 tons of running water are added, and after the aluminum oxide content is adjusted to 10.0 percent, the mixture in the reaction tank is transferred to a sedimentation tank to allow large sludge particles to settle; after the content of the polymeric aluminum chloride water insoluble matters in the sedimentation tank reach 2.0 percent, the sludge is furthered removed to form a qualified product through the treatment of sludge-removing equipment; and water content in the sludge is reduced and the COD removal rate is improved.

Description

Technical field: [0001] The invention relates to a formula and a production process of a water treatment agent, in particular to a production formula and a process of polyaluminum chloride. Background technique: [0002] The current formula produces more thin sludge produced by polyaluminum chloride, resulting in high moisture content in the sludge, which cannot be reused and forms a large amount of waste; and the COD removal rate in papermaking wastewater treatment is low. Invention content: [0003] The purpose of the present invention is to provide a production formula and process of polyaluminum chloride, reduce the moisture content in sludge, and improve the COD removal rate. [0004] The technical scheme adopted in the present invention is: [0005] A production formula and process of polyaluminum chloride, the production formula is 1-2 parts of bauxite; 1-2 parts of calcium aluminate powder; 3-4 parts of hydrochloric acid; 4-5 parts of water (weight ratio ). [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56C02F1/52
Inventor 魏立志朱永河刘桂林孙公立
Owner DONGYING HUATAI FINE CHEM
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