Inorganic Chemicals Industry >
Research and development of self-fitting nano-sized titanium dioxide catalytic wastewater treatment agent
Received date: 2020-02-02
Online published: 2020-05-21
The by-prodnct dilute sulfuric from the production of TiO2 by sulfuric acid was used to prepare Ti（SO4）2 solution reacted with titanian as raw material.The titanium sulfate solution was neutralized with alkaline printing and dyeing wastewater.Then the ultrafine nano-sized TiO2 powders was self-fitted and obtained.The TiO2 powders were used to catalyze,oxidize and decompose the organic material in sewage,and reduced the amount of hydrogen peroxide in the existing Fenton method by 70%.Using UV-photocatalytic oxidation,the amount of hydrogen peroxide was all replaced,the COD removal rate in sewage increased by 14.5% and reached 94.5%.The economical method of production of waste sulphuric acid from titanium dioxide for the treatment of printing and dyeing wastewater was developed,which was coupled with the redundant chemical resources and chemical energy of two related industries.Thus the goal of economicproduction of nano-sized titanium dioxide catalyst was achieved,the production cost of printing and dyeing wastewater treatment was reduced,and the effect was remarkable.
Jiazhu Gong , Xiangfang Lu , Ninglan Wu , Guoxiong Shao . Research and development of self-fitting nano-sized titanium dioxide catalytic wastewater treatment agent[J]. Inorganic Chemicals Industry, 2020 , 52(5) : 59 -64 . DOI: 10.11962/1006-4990.2019-0047
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