Fluorine-containing wastewater treatment device and method

A wastewater treatment and treatment device technology, applied in water/sewage treatment, flotation water/sewage treatment, water/sewage treatment equipment, etc., can solve the problem of large coagulant usage, less dosage of chemicals, and small application range and other problems, to achieve the effect of prolonging lime consumption time, low cost and improving utilization rate
CN112047558AActive Publication Date: 2020-12-08FUJIAN LONGFU CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN LONGFU CHEM
Publication Date
2020-12-08

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Abstract

The invention relates to a fluorine-containing wastewater treatment method and a fluorine-containing wastewater treatment device. The method comprises the following steps: step 1, enriching fluorine ions in wastewater to a certain region by utilizing an external electrostatic field; step 2, separating the wastewater in the fluorine ion enrichment region from the wastewater in the less fluorine ionregion; step 3, removing most fluorine ions from the wastewater rich in fluorine ions by using a chemical precipitation method; step 4, enriching fluorine ions in the wastewater to a certain area byutilizing the external electrostatic field again after the step 3 is finished; step 5, separating the wastewater in the fluorine ion enrichment region and the wastewater in the less fluorine ion region again; step 6, removing most of the remaining fluoride ions from the re-separated fluoride ion enriched wastewater by using a flocculation precipitation method; and step 7, forcibly separating precipitates, floccules, floaters and clear liquid in the wastewater through the centrifugal effect; the de-fluorination efficiency of fluorine-containing wastewater can be remarkably improved, the de-fluorination cost is reduced, the occupied area is small, and wastewater de-fluorination can be continuously and efficiently achieved.
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Description

technical field

[0001] The invention relates to the field of environmental protection and emission reduction, in particular to a treatment device and a treatment method for fluorine-containing waste water. Background technique

[0002] Fluorine is one of the essential trace elements for the human body, and the appropriate concentration of fluorine in drinking water is 0.5-1 mg / L. When the fluorine content in drinking water is insufficient, it is easy to suffer from dental caries; but if the fluorine concentration is higher than 1 mg / L for a long time, it will cause dental fluorosis; the long-term drinking fluorine concentration is 3-6 mg / L water can cause skeletal fluorosis. Fluoride-containing groundwater is widely distributed in my country, especially in the arid regions of Northwest China. About 70 million people drink water with excessive fluoride content, leading to varying degrees of fluorosis. In industry, fluorine-containing ore mining, metal smelting, aluminum pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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