The establishment of green chemical parks is an important direction for realizing the high-quality development of my country's chemical parks during the 14th Five-Year Plan period, and is also an important measure to implement the country's green development of the petrochemical industry. In order to better support the realization of green, low-carbon and sustainable development of chemical parks, the Chemical Park Working Committee of the China Petroleum and Chemical Industry Federation initiated the application and certification of "Applicable Technologies for Green Chemical Parks in 2021" in July 2021. After voluntary declaration, document review, expert review, online publicity and other procedures, the first batch of 19 green chemical park applicable technologies covering the four major areas of pollution prevention, comprehensive environmental management, comprehensive utilization of resources, and ecological protection and restoration were finally selected. It was officially released on November 15. TIANS Group's "Multi-factor Synergistic Free Radical Oxidation and Biological Oxidation Coupling Advanced Treatment Technology Research and Application of Pharmaceutical Wastewater" was successfully selected for its advanced nature and unique technical advantages.

Industrial wastewater has the characteristics of various types, complex components, high content of inorganic salts, and certain biological toxicity. In 2015, the government issued the "Water Pollution Prevention and Control Action Plan", which stated that "by 2020, the national water environment quality will be improved in stages; by 2030, strive to improve the overall national water environment quality; in 2050, the ecological environment quality will be comprehensively improved, and the ecosystem will be realized. Virtuous circle".

The Environmental Protection Division of TIANS Group focuses on providing environmental protection and energy-saving solutions for industrial enterprises, and is committed to near-zero emissions of industrial pollutants，Master the current mature and advanced waste water and waste gas treatment unit technology and energy saving and emission reduction technology, and be good at combining technical units reasonably according to customer needs to form the best solution. Committed to providing industrial enterprises with one-stop environmental protection engineering general contracting solutions for professional consulting, design, procurement, construction, commissioning, operation and maintenance. Relying on the Chen Ping laboratory, TIANS Group's research on the near-zero discharge of wastewater in the pharmaceutical industry complements the domestic shortcomings in the subdivisions, solves the problem of environmental protection management of pharmaceutical companies, and effectively supports the green and healthy development of the pharmaceutical industry.

"Multi-factor cooperative free radical oxidation and biological oxidation coupled advanced treatment technology research and application of pharmaceutical wastewater"

The selected "Research and Application of Multi-factor Cooperative Radical Oxidation and Biological Oxidation Coupling Advanced Treatment Technology for Pharmaceutical Wastewater"Innovatively developed advanced waste water treatment technology based on free radical oxidation technology and biological oxidation technology, and formed a complete set of waste water treatment technology and equipment through the construction of a personalized treatment system, which is widely used in the treatment of waste water in pharmaceutical companies.

(1) Developed efficient free radical oxidation technology. By studying the principles, influencing factors and catalytic mechanism of photocatalytic oxidation, electrocatalytic oxidation and ozone catalytic oxidation, a variety of catalytic oxidation unit modules have been constructed, and TOC, COD, GC-MS, LC-MS, HPLC, HS- GC and other tests analyzed the degradation process of a variety of characteristic pollutants, constructed a combined process technology model, and developed a photoelectric combined catalytic oxidation integrated technology, an ozone catalytic oxidation-hydrogen peroxide cooperative catalytic oxidation technology.

(2) Reveal the mechanism and control law of the catalytic material of the free radical oxidation system. The photocatalytic oxidation catalyst, electrocatalytic oxidation catalyst, MgO/AC, Ru/AC catalyst developed by SEM, TEM, XRD, ICP, BET and other detection technologies were used to perform detailed characterization, and the generation, diffusion and effect of hydroxyl radicals were constructed. The effect model reveals the mechanism, catalytic effect and control law of the catalyst under different conditions, and determines the catalyst preparation carrier, loading method and individual application scheme under different application conditions.

(3) Developed a combined process of free radical oxidation and biological oxidation with independent intellectual property rights. Through the integrated application of free radical oxidation technology and biological oxidation technology, a combined process of free radical oxidation and biological oxidation was developed, and a demonstration project for advanced wastewater treatment was established, which achieved stable treatment under different water volume and water quality conditions, reaching the domestic leading level .

After the publication of the first batch of applicable technology catalogs for green chemical parks, it will provide technical reference and choices for 1,000+ chemical park committees and related industrial enterprises. As an important support for the creation of green chemical parks, applicable technologies will actively promote the establishment of a group of green models with a demonstrative effect. A benchmark for chemical parks, leading the national chemical parks and even the entire industry to improve the level of green recycling and low-carbon development.

TIANS Environmental Protection will continue to uphold innovative environmental protection concepts, and provide intellectual support and action practices for building an ecologically beautiful industrial cluster of "blue sky, clear water, and green grass".