Team Introduction
The water pollution control theory and technology team led by Researcher Wu Zhiren/specially appointed professor currently has 11 full-time researchers, including 1 national overseas high-level talent, 1 Jiangsu specially appointed professor, 1 talent peak of the six major universities, 1 young specially appointed professor, 3 Jiangsu Province "Double Innovation" PhD holders, and 1 Macao young scholar. The team closely focuses on the development direction of the disciplines in the college, and combines its own professional advantages to carry out basic research and technological innovation in the fields of biological fillers and wastewater biological treatment, sludge disposal and resource utilization, membrane materials and membrane separation, green advanced oxidation environment restoration, river ecosystem restoration, energy conversion catalysis, soil erosion prevention and ecological restoration, etc. The team members have undertaken more than 30 major scientific research projects at or above the provincial and ministerial level (National Key R&D Program International Cooperation Special Project, National Science and Technology Support Program, National Torch Program Industrialization Demonstration, Jiangsu Province Achievement Transformation, Jiangsu Province Key R&D Program, National Natural Science Foundation of China, etc.), obtained more than 60 authorized invention patents, published more than 120 SCI papers (including more than 40 published in TOP journals in Zone 1), and obtained 15 high-tech products. Among them, there is one national key new product Received 4 relevant rewards (including 2 awards at or above the provincial and ministerial level). The team focuses on the combination of industry, academia and research, and has established long-term, stable and friendly cooperative relationships with Jiangsu Aitek Holdings Group Co., Ltd., Danyang Shangde Microbiology Research Institute Co., Ltd., Jiangsu Collaborative Innovation Center, Jiangsu (Aitek) Suspension Filter Material Engineering Technology Research Center, as well as Jiangsu Enterprise Graduate Workstation, Jiangsu Yuxin Environmental Protection Engineering Management Co., Ltd., Nanjing Institute of Soil Research, Chinese Academy of Sciences, Jiangsu Chuangwo Biotechnology Co., Ltd. and other enterprises and research institutes, creating high-quality platforms for graduate training, technical training and transformation; In addition, the team has conducted close exchanges and cooperation with well-known universities at home and abroad, such as Ibaraki University in Japan, Meicheng University, Kyoto University, Alberta University in Canada, Nanyang Technological University in Singapore, Curtin University in Australia, University of Science and Technology of China, Southeast University, and Harbin Institute of Technology, greatly improving the research vision and literacy of young teachers and graduate students.
Team research direction
(1) Wastewater treatment technology and application based on new basalt fiber fillers
Basalt fiber filler (BF) is a new type of green and environmentally friendly material, but its surface zeta potential is negative and its biological affinity is poor, which is a key problem restricting its application in wastewater treatment. With the support of the National Key R&D Program, the government/Hong Kong, Macao, and Taiwan Key Special Projects (2016YFE0126400), the team conducted cooperative research on the water treatment technology and application of modified basalt fiber (MBF) new filler, and achieved the following innovative results: using surface modification methods such as physical coating, chemical grafting, and liquid-phase deposition, a new micrometer level flexible inorganic MBF was independently developed; We have developed manufacturing methods for MBF fillers in three shapes: star shaped, umbrella shaped, and cushion shaped. We have also invented fully automated weaving equipment for umbrella shaped fillers, filling a domestic gap; The three-dimensional "biological nest" structure (diameter greater than 10 cm) of MBF filler was first proposed and analyzed, revealing the mechanism of microbial attachment and pollutant removal; We have developed a wastewater treatment process based on MBF fillers, achieving synchronous carbon, nitrogen, and phosphorus removal within the "biological nest"; Multiple demonstration projects have been carried out and practical engineering promotion and application have been implemented in 5 places; Compared with the conventional activated sludge process, this technology has the characteristics of COD volumetric load exceeding 5 kg/m ³ · d, sludge reduction of 2/3, energy consumption reduction of 3/4, and land occupation reduction of 3/4. The overall treatment cost is reduced by more than 30%, generating significant economic and social benefits, and has broad market prospects and application value; Published a total of 21 high-level academic papers (with special coverage in the journal Environmental Engineering) and obtained 16 authorized invention patents (including 1 PCT patent); Develop two relevant standards and specifications. The team also expanded the innovative cooperation between Jiangsu University, Gunma Institute of Technology in Japan, and Albert University in Canada on MBF fillers in the fields of purification tanks and industrial wastewater, which is of great significance for promoting the development of basalt fiber industry and the promotion and application of MBF in wastewater treatment.
(2) Research on Municipal Sludge Biodrying and Carbonization Energy saving System and Carbonization Resource Utilization
In response to the large amount of municipal sludge in China (≥ 10000 t/a for Chinese cities), low calorific value and complex composition, lack of energy-saving and practical technology system, the team has developed the following key technologies and equipment: developed high-temperature carbonization and activation technology and equipment for municipal sludge, and obtained activated carbides with nanoscale (10-9 m) pore size and specific surface area of over 100 m ²/g; Developed a manufacturing technology for multi-component active carbide products based on crushing and vacuum liquefaction, producing multi-component environmental purification materials with high adsorption, dehydration, hydrophilicity, aggregation, and other functions (such as 0.4 mm dehydration aids, 50 agents, grade deodorizers, and dioxin adsorbents with pore sizes of 2-6 nm); We have developed an environmental purification and in-situ utilization technology based on multiple activated carbon products, including sewage, waste gas (mainly NH3, H2S, dioxins, etc.), and sludge, and carried out corresponding demonstration projects to achieve in-situ resource utilization, helping carbon peak and carbon neutrality, and promoting the development of China's energy conservation and emission reduction industry.
(3) Deep oxidation of recalcitrant wastewater based on CSE and its application technology and equipment
We have successfully developed a new material for decolorization/COD reduction (composite oxidant CSE) that can continuously produce high concentrations of oxidizing groups for different deep oxidation treatment technologies for wastewater. We have evaluated the COD degradation efficiency of pre treated (microelectrolysis) and bio treated printing and dyeing wastewater, screened and optimized the CSE material formula, and determined the final component concentration of the composite oxidant; Based on the pre-treatment and biochemical treatment of printing and dyeing wastewater in the early stage, using COD removal rate as a reference index, a CSE oxidation material was developed that continuously generates high concentrations of oxidative free radicals (hydroxyl free radicals, anionic superoxide free radicals, peroxide free radicals, etc.) under the action of catalyst Fe. The influence of various reaction parameters on the treatment effect was examined, and the optimal parameter range for process operation was determined. In practical application, further optimization and debugging are needed according to specific situations; Further optimize the advanced oxidation treatment process and reactor, develop a new type of oxidant CSE advanced oxidation method deep treatment pilot equipment, achieve good COD and chromaticity removal effects, and solve the technical bottlenecks of hydroxyl radicals with short existence time, large sludge volume, and high cost in general chemical oxidation reactions (such as standard Fenton, photo assisted Fenton, electric Fenton, etc.) deep treatment technology in China.
(4) Development of Electroplating Heavy Metal Wastewater Treatment System Based on New Ecological Iron based Green Rust Environmental Purification Materials
Committed to developing a green rust purification cycle and its ferritization process, building a new type of electroplating heavy metal wastewater treatment system based on new ecological iron-based green rust environmental purification materials. Study the mechanism of "breaking the complex reaction" of metal complexes; Explore the mechanism of adsorption and reduction of heavy metal ions and metal complexes by green rust, and conduct kinetic and thermodynamic studies; Develop an effective method to regulate the ferritization process of heavy metal rich green rust sludge, explore its reaction mechanism, and provide important theoretical basis for the development of electroplating heavy metal wastewater treatment systems based on new ecological iron-based green rust environmental purification materials.
(5) Research and Application of Comprehensive Management Technology for River Water Environment
Our team is committed to the research of comprehensive management technology for river water environment, and has carried out the following two aspects of work: efficient management of river water environment: introducing and transforming advanced river water management technology from abroad, evaluating the contribution of single technology and different technology combinations to river water environment management under different water environment conditions, and providing design parameters for comprehensive management of river water environment based on water quality characteristics for designated rivers, thereby purposefully strengthening the management of attention indicators; Ecological restoration and reconstruction of river environment: Based on the structural characteristics, diversity, and spatiotemporal coupling effects of aquatic plants, aquatic animals, and microbial communities in river channels, research is conducted on a natural ecological restoration technology based on riverbed aquatic plants, aquatic animals, and microorganisms, providing sufficient theoretical basis and practical experience for the ecological restoration and reconstruction of river water environment.
