Recently, the results of the finals of the 7thBeijing University Student Energy-Saving, Water-Saving, Low-Carbon, and Emission-Reduction Competition were announced. The 23 teams from our university, led by Professors Yu Caihong and Zhang Liping, achieved excellent results, winning a total of 22 awards, including special, first, second, and third prizes. Specifically, in the main track: 1 special prize, 2 first prizes, 5 second prizes, and 6 third prizes; in the enterprise track: 2 first prizes and 2 third prizes; and in the rural revitalization track: 4 third prizes. Eight teachers, namely Zhang Liping, Yu Caihong, Ma Yan, Qi Peng, Han Peng, Yin Juan, Huang Zhanbin, and Liu Jincheng, were awarded as excellent advisors, and our university also won the Excellent Organization Award for the seventh time.
To organize this competition well, with the strong support of the Academic Affairs Office and the College of Chemical and Environmental Engineering, on September 21, 2024, Green Roots & Shoots promoted the competition on its public account and organized the registration process. On November 13, 2024, an offline launch ceremony was held at the Xueyuan Road Campus. Professors Wang Qibao, Yu Caihong, and Zhang Liping introduced the competition and requirements, providing valuable suggestions for participants. From January to April 2025, the competition coaching team, advisors of each team, participating teams, and students from the Green Roots & Shoots association worked tirelessly. Through multiple meetings, they provided comprehensive guidance to students and organized experts to select 23 teams to participate in the Beijing competition at the end of April 2025.
Our university's team, "Extreme Electricity and Pure Flow - PbO2-based New Electrode Empowering Efficient Purification of Coking Reverse Osmosis Concentrated Water," was guided by Associate Professor Zhang Liping from the College of Chemical and Environmental Engineering. The team members included Gao Yiqing, Cai Yuxuan, Yang Sai, Du Xiyao, Chen Yinan, Lv Shangyan, and Liu Siying. The team developed a Ti/PANI-co-PPy/Ce,Nd-PbO2 new electrode, which improves binding force through in-situ polymerization of a conductive interlayer on a titanium substrate and optimizes the PbO2 crystal structure with cerium and neodymium doping. When electrolyzed at a current density of 25 mA/cm² for 120 minutes, the removal rate of 3,5-di-tert-butylphenol reached 78%, energy consumption was reduced by 25.9%, and current efficiency was increased to 42%. This electrode utilizes Cl⁻/SO4²⁻in wastewater to produce active radicals in situ without adding additional reagents. The removal rates of COD, TOC, and UV254 reached 87.76%, 47.92%, and 77.42%, respectively, and the effluent meets the reuse standards for crystalline salt, providing an efficient solution for zero discharge of coking wastewater. In the final defense, they remained calm and stood out from the fierce competition, winning the special prize.
