Treatment production line for hydrogen fluoride wastewater

Abstract

The invention discloses a treatment production line for hydrogen fluoride wastewater. The treatment production line is characterized by comprising a first mixing tank, an acidic neutralization tank, an alkaline neutralization tank, a second mixing tank, a first coagulation tank, a first flocculation tank, a pickling tank, an alkaline washing tank, an acid-base balancing tank, a second coagulationtank, a second flocculation tank, a first sloping plate sedimentation tank and a second sloping plate sedimentation tank, wherein each of the above tanks comprises a tank body; a quick stirring motorand a slow stirring motor are arranged above each tank body; the quick stirring motor is close to the inlet of the tank body; and the slow stirring motor is located in the middle of the tank body. Thetreatment production line of the invention has the advantage that harmful substances in the wastewater are thoroughly treated and thus meet the national environmental protection emission standards inChina through tandem connection of the acidic neutralization tank, the alkaline neutralization tank, the coagulation tanks and the flocculation tanks by technical means of introduction of wastewaterinto a neutralization adjustment tank, detection of a pH value, detection of the concentration of fluoride ions, rapid stirring in small space, secondary acid-alkali neutralization, secondary detection of the pH value, secondary detection of the concentration of fluoride ions, flocculation, coagulation, solid-liquid separation and the like.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a hydrogen fluoride wastewater treatment production line. Background technique [0002] In the process of producing optical cables and optical fibers, optical fiber industrial enterprises will produce industrial wastewater, which contains hydrogen fluoride acidic medium, and the concentration of fluorine ions greatly exceeds the discharge standards stipulated by the state. Therefore, the hydrogen fluoride must be treated to meet the fluorine ion emission requirements stipulated by the state before it can be discharged outside. During the production of optical cables and optical fibers, fluoride ions are not only dissolved in wastewater, but also adsorbed in silica dust. The fluoride ions adsorbed in the silica dust are replaced, enter the water body, and be treated together with the hydrogen fluoride in the wastewater. The water treatment technology in this case is relatively ...

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Problems solved by technology

Therefore, the hydrogen fluoride must be treated to meet the fluorine ion emission requirements stipulated by the state before it can be discharged outside. During the production of optical cables and optical fibers, fluoride ions are not only dissolved in wastewater, but also adsorbed in silica dust. The fluoride ions adsorbed in the silica dust are replaced, enter the water body, and be treated together with the hydrogen fluoride in the wastewater. The water treatment technology in this case is relatively difficult

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