The faculty in the research field mainly pay attention to the pollution control theory and technology.In the past ten years, the research group experienced a development process from nothing to one and from weak to strong with clear characteristics and certain influence in environmental protection area, which also has important impact on the development of Department of Environmental Science and Engineering. Our group has applied numerous achievements to environmental protection, especially the treatment of odorous gases and hard-degraded waste water.
At present, the research filed includes the following topics:
1. Pollution control theory
The branch emphasizes on chemical conversion of pollutant in the environment. Our researchers deeply investigated the oxidation-reduction reaction, photochemistry, electrochemistry, plasma chemistry, free radical chemistry and surface chemistry of various pollutants in aqueous and gas phases on microscospic level. Pollutants involved include ozone-depleting substances, sulfur compound, greenhouse gas, effluvial substances, dyes, volatile organic compound, polycyclic aromatic hydrocarbons and perfluoro-surfactant. The Research work about the microscopic chemical activities of pollutant in natural environment provides theoretical basis for pollution control technology and engineering. Recently, research on microscopic chemical reaction of pollutants is advanced further by Nanosecond Laser Transient Spectrum Technology, which will undoubtedly provide more important information for the control of pollutant.
2. Pollution prevention and treatment technology
So far, we have successfully applied non-thermal plasma technology to the odor treatment with high-efficiency and power-saving. We also developed photon technology for odorous gases, overpotential electrolysis of three-dimension electrode for medical waste water, multiple-effect evaporation method for high-concentration organic waste water, dielectric barrier discharge method for H2S and CS2, and so on.. At present, we mainly focus on the investigating of high-oxidative flocculation, microwave ultraviolet lamp for dyeing waste water, and new β-PbO2 electrode electrolysis for organic waste water.
3. Design of pollution treatment project
Our group worked on the design of environmental protection projects with the application of new technology. For instances, we used dielectric barrier discharge method to treat the industrial gas (8000 Nm3/h, CS2 60 mg/m3,H2S 2000 mg/m3) of Shanghai Chemical Fibre Company with the removal rates of over 85% for both CS2 and H2S. The NaOCl spraying oxidation method was introduced into the treatment of 10000Nm3/h odorous gas in Wuxi Kyowa Foods Co., Ltd. With the significantly reduction according to the assessment of Wuxi Environmental protection bureau. We used peracetic acid spraying-electrostatic-demister technique to treat odors for Shanghai We also adopted self-developing nano-material FD-4 in the recycling of waste water from vehicle washing station such as Shanghai No. 3 Team of Environmental Sanitation which was responsible for municipal solid waste transportation. In the project of Zhejiang Xianju Pharmaceutical waste water treatment with CODCr20000 mg/l，water volume 3000 t/d, we successfully applied the three-dimension electrode electrolysis to the pretreatment with highly efficient decomposition and the obvious improvement of bio-decomposition level. Currently, we are working on an odor treatment project for Garbage Compressing Station in Putuo District of Shanghai with gas volume 120000 Nm3/h. Active participation in pollution treatment projects not only increases the social influence of the discipline, but also promotes its research development.