Silicon removal device and silicon removal method

Abstract

The invention discloses a silicon removal device, which comprises a silicon-containing wastewater pool, a silicon dioxide reaction precipitator, a large-flux precision filter, an NF device, a cleaningwater tank and a product water tank, wherein the silicon-containing wastewater pool is communicated with a silicon dioxide reaction precipitator through a pipeline, the silicon dioxide reaction precipitator is sequentially communicated with a large-flux precision filter and an NF device through pipelines, concentrated water of the NF device returns to the reaction area through a water distributorarranged in the reaction area, and produced water of the NF device is communicated with a product water tank; wherein the silicon dioxide reaction precipitator comprises a reaction zone, a settling zone and a water purification zone, the water distributor is arranged in the reaction zone, a water inlet of the water distributor is communicated with the NF device through the pipeline, the silicon dioxide reaction precipitator is further communicated with a cleaning water tank through the pipeline, and the cleaning water tank is communicated with the NF device through the pipeline. According tothe silicon removal device and the silicon removal method provided by the invention, through precipitation and cyclic concentration and filtration of the NF device, the silicon removal effect is excellent, and silicon dioxide and the like in industrial wastewater can be obviously removed.

Description

technical field [0001] The invention relates to the technical field of silicon removal from industrial wastewater, in particular to a silicon removal device and a silicon removal method. Background technique [0002] Desilication (silica removal) is the process of removing silicon dioxide from water by ion exchange or other methods. Silicon compounds in industrial water will cause different degrees of harm to the production process. Silicon compounds in industrial boiler feed water, geothermal water and cooling water are prone to form silicon scale, and the formed silicon scale is dense and hard, which is difficult to clean with ordinary methods, seriously affecting the heat transfer efficiency and safe operation of equipment; in the electronic industry water, Silicon dioxide will cause great harm to the production of semiconductors on the surface of monocrystalline silicon, reducing the quality of electronic tubes and solid circuits; in the paper industry, the content of s...

AI Technical Summary

Problems solved by technology

Silicon compounds in industrial boiler feed water, geothermal water and cooling water are prone to form silicon scale, and the formed silicon scale is dense and hard, which is difficult to clean with ordinary methods, seriously affecting the heat transfer efficiency and safe operation of equipment; in the electronic industry water, Silicon dioxide will cause great harm to the production of semiconductors on the surface of monocrystalline silicon, reducing the quality of electronic tubes and solid circuits; in the paper industry, the content of silicon dioxide is too high, which will make the paper brittle; in the rayon industry water If the content of silicic acid is too high, it will affect the fiber strength and viscose viscosity; in hydrometallurgical water, for this reason, the removal of silicon must be fully considered in different water supply treatment systems

[0003] In order to solve the above problems, it is urgent to invent a silicon removal device and a silicon removal method to solve the problem of removing silicon dioxide in industrial water.

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