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Method for preparing and using medicament for purifying and deslagging waster water in aluminum fluoride production

A technology for producing wastewater and aluminum fluoride, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., to achieve clear and transparent water quality

Inactive Publication Date: 2009-04-15
李界文
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of separation and purification of fluoride ions and pollutants from water in aluminum fluoride production waste water within three minutes, so as to achieve the discharge or reuse production of purified water quality, and the medicament used makes the separated waste residue not Will cause secondary pollution to the environment

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0007] Composition standards and preparation methods of medicines:

[0008] 1. Limestone

[0009] Crush the limestone into 10mm-20mm particles and put them into the aluminum fluoride production wastewater tank for reaction. The length of the reaction time is determined by the amount of water, the acidity of the PH value of the water quality and the amount of stones added. But the final requirement standard is that the pH value of the water after the reaction should be controlled between 6-7.

[0010] 2. Drug No. 1: crush quicklime into powder, mix it with sodium hydroxide 1:1, and then dilute it with tap water at a ratio of 1:4 to form a liquid. The pH value is 14.

[0011] 3. Drug No. 2: Mix solid polyaluminum chloride, polyferric chloride, and polysilicon chloride at a ratio of 7:2:1, dilute with tap water at a rate of 1:3, and then use 30% liquid hydrochloric acid to mix with The dry smoke dust after electrostatic precipitating of the coal-fired boiler is prepared accord...

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Abstract

The invention relates to a reagent for the purification and slag removal of aluminum fluoride production wastewater and a using method, relating to the chemical industry wastewater treatment purification field. In the invention, a plurality of chemical reagents are prepared according to proportion, diluted to liquid, and dissolved in the aluminum fluoride production wastewater in three or four stages in different time, then chemical bonds and relatively balanced ionic layers in the wastewater are damaged, property of the wastewater is changed, impurities such as fluorine ions of the wastewater and water are fully separated and precipitated, water quality is clear and transparent, the fluorine ions, COD, SS, pH value in the water can reach the industrial wastewater pollution emission standard of the environmental protection department or can be reused for a production system. Continuous purification for 2 times or 3 times can be realized by using the method and secondary pollution can not be caused to water by using the reagent and the method.

Description

technical field [0001] The invention relates to the fields of wastewater purification and slag removal in aluminum fluoride industrial production. Background technique [0002] The wastewater discharged from the industrial production of aluminum fluoride is not only acidic wastewater with a pH value of 1-2, but also contains fluoride ions in the range of 2800mg / L-7200mg / L, which is hundreds of times higher than the standard of 10mg / L required by the national environmental protection department. , the traditional methods of anaerobic, aeration, amplitude flow, sedimentation or biological treatment have been unable to completely remove the high content of fluoride ions in wastewater. It is no longer suitable to solve the harm problems brought to the environment and local water bodies by the rapid development of the current aluminum fluoride industry. Contents of the invention [0003] The purpose of the present invention is to solve the problem of separation and purificatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 李界文
Owner 李界文
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