Composite fluorine removal agent and preparation method thereof

Abstract

The invention discloses a composite fluorine removal agent and a preparation method thereof. The preparation method comprises the following steps of S1, selection of raw materials, wherein 60% of calcium salt, 15% of water, 4% of acids, 2% of ferric salt, 10% of aluminum salt, 5% of magnesium salt and 4% of GMS-F2 are selected as the raw materials; S2, weighing of the raw materials, wherein the solid and liquid raw materials are placed in dry and clean containers respectively and weighed in proportion; S3, mixing of the materials, wherein the raw materials prepared in proportion are added intoa dry and crystallized reaction still in sequence for mixing. For the problem that sewage or use water contains fluorine, the fluorine removal agent can chemically react with fluorine in the water togenerate precipitates, due to the addition of appropriate amounts of GMS-F2, the reaction between the fluorine removal agent and the fluorine can be accelerated, the content is controlled at 1 mg / l or below, the water purification effect is obvious, not only can the fluorine removal efficiency be improved, but also the labor cost and economic cost can be reduced, and the development and use of enterprises are facilitated.

Description

technical field [0001] The invention relates to the technical field of sewage biochemical treatment, and more specifically relates to a composite defluoridation agent and a preparation method thereof. Background technique [0002] Fluorine is one of the widely distributed elements in nature. The stock in the earth's crust is 0.065%, and the order number of the existing amount is 13. Fluorine is also an important trace element of life in the human body, mainly distributed in bones and teeth. The fluorine needed by the human body mainly comes from drinking water. Fluoride widely exists in natural water bodies. Excessive intake of fluoride will lead to fluorosis. If the fluorine content in water is less than 0.5ppm, the incidence of dental caries will reach 70% to 90%. , but if the fluoride content in drinking water exceeds 1ppm, the teeth will gradually produce spots and become brittle. The fluorine content is 0.5-1.0mg / l, so it is very necessary to strictly control the fluor...

AI Technical Summary

Problems solved by technology

[0003] At present, the high-content fluorine-containing wastewater is basically coagulated and precipitated by calcium salt, aluminum salt, and iron salt, which can effectively control the fluorine content in the wastewater to about 10 mg / l, and it is difficult to control the fluorine content to 1 mg / l Below, and the efficiency is low, thus increasing the economic expenditure, which is not conducive to the development of enterprises