On March 12th, Ningbo Productivity Promotion Center organized a "Self-fitting Nano-catalytic Wastewater Treatment Agent Production Method and Product" jointly developed by Ningbo Xinfu Titanium Dioxide Co., Ltd. and Chengdu Qian Li Jin Technology Innovation Co., Ltd. in Zhenhai, Ningbo. "The scientific and technological achievements appraisal meeting of new technology and new product projects. Experts of the appraisal committee believe that this achievement is the first in China and has reached the international leading level.
According to Gong Jiazhu, general manager of the research and development unit Qian Lijin, the result is a one-step reaction of sulfur dioxide and titanium-containing raw materials by using titanium dioxide as a by-product sulfuric acid to produce sulfuric acid (H2SO4), iron sulfate (FeSO4) and titanium sulfate Ti (SO4) 2 Self-fitting nano-catalytic wastewater treatment agent is used in the treatment of printing and dyeing industrial wastewater. Under the alkaline conditions and dilution of printing and dyeing industrial wastewater, titanium sulfate is coupled to hydrolyze to nano-TiO2, which catalyzes the decomposition of organic matter in wastewater treatment. The process technology is unique, the process is reasonable, and it is innovative.
Gong Jiazhu told the China Chemical Industry News reporter that this project has 4 innovations, the first self-fitting nano-catalytic wastewater treatment agent production; innovatively simplified the tedious production process of nano-TiO2 catalysts; optimization and improvement of the existing Fenton method Sewage treatment efficiency; expanded new uses of titanium dioxide as by-product sulfuric acid.
The chairman of the appraisal committee, Professor and Ph.D. Professor Zheng Huaili of the School of Urban and Environmental Engineering, Chongqing University, said that the result of the project is to generate nano-TiO2 in situ during the use of the chemical resources by coupling upstream and downstream chemical resources, reducing equipment investment and saving alkali and acid solutions. And separation of auxiliary raw materials in the washing process; the product can be used as the main raw material for the wastewater treatment of Fenton process, which optimizes the production process, reduces production operations, saves industrial sulfuric acid and solid ferrous sulfate, and reduces the use of hydrogen peroxide It has good economic and environmental benefits. In particular, Zhejiang Province, where the result of the project is located, has a large proportion of printing and dyeing textile industry, which has a very broad market application prospect.
Zheng Huaili pointed out that this product uses titanium dioxide as a by-product sulfuric acid as a raw material, opening up new uses of by-product sulfuric acid, saving resources, and meeting the needs of sustainable ecological environment development. It is recommended to increase the promotion of results.
At present, the results have been verified in Shaoxing and Chongqing printing and dyeing industry water treatment projects, and the sewage treatment effect is good. The results of the industrial operation of this technology show that its main technical indicators are excellent. The CODcr, suspended solids SS, and chroma treatment indicators of wastewater treatment are 10%, 40%, and 50% lower than those of the existing Fenton treatment.
Compared with the technology and equipment of nano Ti O2 catalysts developed at home and abroad, this achievement has the advantages of economical raw material sources, simple process flow, low equipment investment, and low production costs. Dissolving, rinsing, filtering, washing, saving caustic soda, hydrochloric acid, and washing distilled water, and not generating waste liquid for separate separation and washing, which has significant economic benefits.
Gong Jiazhu said that, taking advantage of the management and marketing advantages of Xinfu Titanium Dioxide Company ’s existing by-product sulfuric acid and titanium raw materials, the organization and construction of a large-scale "self-fitting nano-catalytic wastewater treatment agent" production unit, which will effectively turn technology into productivity To bring new technologies and products to the market and create more economic and social benefits; to promote the technological progress of the industry for the economic use of nano-TiO2 catalytic materials, and to write a new titanium dioxide production circular economy industrial chain, and use by-product sulfuric acid as a resource And a new chapter in the development of the wastewater treatment industry.
According to reports, at present, research and development units are working to further improve the research and development of nano-catalytic wastewater treatment agent technologies and products applied to the treatment of various organic wastewater, and strive to provide technical support for more areas of the petroleum and chemical industry, and to provide industrial wastewater treatment. Make new achievements by winning the battle to defend the blue sky and clear water environment.