Wastewater treatment device for semiconductor production and processing

Abstract

The invention discloses a wastewater treatment device for semiconductor production and processing, which comprises a preliminary filter residue assembly, a secondary transmission pipe, a reaction harmremoval assembly, a floating foam removal assembly, an input pipe and a precipitation cylinder, the upper side of the precipitation cylinder is provided with the preliminary filter residue assembly,and the right side of the precipitation cylinder is connected with the input pipe; a reaction harm removal assembly is arranged at the end, away from the precipitation cylinder, of the input pipe, a secondary conveying pipe is connected to the upper side of the reaction harm removal assembly, a floating foam removal assembly is arranged on the side, away from the reaction harm removal assembly, ofthe secondary conveying pipe, and the primary residue filtering assembly comprises a fixing column, a residue filtering disc, a sweeping brush, a filtering net, filtering cloth and a butt joint column; a butt joint column is detachably inserted into the top of the precipitation cylinder, and a residue filtering disc is fixed to the end, away from the precipitation cylinder, of the butt joint column. Fluorine ions are adsorbed by aluminum hydroxide precipitates generated by lime powder and aluminum sulfate, and the fluorine ions are neutralized and degraded, so that harm to human bodies and pollution to the environment are reduced.

Description

technical field [0001] The invention relates to the field of semiconductor technology, more specifically, it relates to a wastewater treatment device for semiconductor production and processing. Background technique [0002] In the process of our country's development, the semiconductor industry is a new and fast-growing production industry. Semiconductors play an important role in the construction of our country and are mainly used in electronic machinery manufacturing. During the production process of the semiconductor industry, a certain amount of wastewater will be produced. The wastewater mainly contains raw material elements in the semiconductor production process, such as fluorine, copper, nitrogen, etc. Excessive discharge of these elements into the river will cause serious damage to the water source. pollute. Among them, fluorine-containing wastewater mainly comes from hydrofluoric acid and ammonium fluoride in the etching process. These reagents react with the pol...

AI Technical Summary

Problems solved by technology

Generally speaking, excessive intake of fluorine will cause great harm to the human body. Fluorine can cause great damage to human eyes, mucous membranes, upper respiratory tract and important skin tissues, etc., and at the same time affect the metabolism of human substances. Metabolic disorders, and then have harmful effects on various organs of the human body, and severe cases will lead to death. Therefore, those skilled in the art provide a wastewater treatment device for semiconductor production and processing to solve the problems raised in the above-mentioned background technology

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