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Bioretention cells with epoxy resin modified loess to remove runoff pollutants
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Hang ZHOU, Jia-jia ZHOU, Jia-qing XIONG*, Yan-wei XU
China Environmental Science | 2025, 45(1) : 175 - 184
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China Environmental Science | 2025, 45(1): 175-184
• Water Pollution Control •
Bioretention cells with epoxy resin modified loess to remove runoff pollutants
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Hang ZHOU, Jia-jia ZHOU, Jia-qing XIONG*, Yan-wei XU
Affiliations
  • Key Lab of Northwest Water Resource, Environment and Ecology, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
Published: 2025-01-20
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This paper chose epoxy resin modified loess as the primary filler for the biological retention tank. It tested 48 different raw material types with varying parameters to improve the ratio of epoxy resin to loess as the benchmark (greater than 2mm/min). The corresponding epoxy resin content is 5% (b5), 10% (b10), 5% (b5d1), and 10% (b10d1). The adsorption capability of the four enhanced materials for NH4+ -N and phosphate was stronger than that of conventional fillers. After the biological retention tank was filled, b5d1had the best average removal of NH4+ -N and COD, reaching 93.97% and 77.5%, respectively. b5also removed NO3- -N(76.6%), TN (62.4%), and TP (98%) more successfully than the other two. Through microbial investigation, b5was found to contain more organisms including Chloroflexi and Steroidobacter that are engaged in the flora process. The NH4+ -N, NO3- -N, TN, TP, and COD can all be efficiently removed by an enhanced loess packed biological tank. According to studies, loess enhanced with epoxy resin has a wide range of promotional uses, may be utilized as biological tank packing, and effectively filters contaminants in runoff rainfall.

bioretention cell  /  loess  /  epoxy resin  /  pollutant purification  /  in-situ construction
Hang ZHOU, Jia-jia ZHOU, Jia-qing XIONG, Yan-wei XU. Bioretention cells with epoxy resin modified loess to remove runoff pollutants[J]. China Environmental Science, 2025 , 45 (1) : 175 -184 .
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  • Receive Date：2024-06-03
  • Online Date：2026-03-18
  • Published：2025-01-20
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  • Received：2024-06-03
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Affiliations
    Key Lab of Northwest Water Resource, Environment and Ecology, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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