TY - JOUR
TI - Studies on the three-phase transport of ammonium nitrogen in bioretention
AU - Mei Ying
AU - Gao Yuying
AU - Zhu Xiaohan
AU - Xiang Yajun
AU - Sun Dongxu
AU - Jing Yanyan
JN - Thermal Science
PY - 2026
VL - 30
IS - 2
SP - 1077
EP - 1086
PT - Article
AB - Bioretention, a management strategy employed to address non-point source  pollution in urban settings, has emerged as a prevalent method for the  treatment of pollutants in stormwater runoff. However, there is a paucity of  research on the ammonium nitrogen transport process in the gas-liquid-solid  three-phase of bio-retention. The present study investigates the  distribution of ammonium nitrogen in a gas-liquid-solid three-phase system.  To this end, the study adds various pro-portions (0%, 2%, 4%, 6%, 8%, and  10% by volume) of soil fillers (newspaper, wood chips, and humus leaves) to  sandy soil, plants ryegrass, and constructs a laboratory phytoretention  system to artificially simulate rainfall. The distribution of ammonium  nitrogen in the gas-liquid-solid three-phase system of the sandy soil, with  different proportions of soil fillers, was investigated. The study focused  on the distribution of ammonium nitrogen in the gas-liquid-solid three-phase  system of the phytoretention system. The present study explores the  alterations in the system of ammonium nitrogen transport within the  gas-liquid-solid three-phase configuration. The volatile accumulation of  ammonia in the sandy soil group accounted for 4.67% of the ammonium  nitrogen input. The ammonia nitrogen con-tent of the sandy soil group that  was discharged from the system with rainwater accounted for 0.24% of the  total ammonia nitrogen input. The percentage of soil ammonia nitrogen  accumulation to ammonia nitrogen input for the sandy soil group was 51.84%.
DO - 10.2298/TSCI2602077M
ER -