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Pollution Status Assessment of Heavy Metals in Dalong River and Restoration with Sludge-Derived Biochar
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Qunbo QIAO1, Mingxiang ZHANG1, Bingyi HAN2, Weihua WANG3
Mining and Metallurgical Engineering | 2025, 45(5) : 136 - 141
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Mining and Metallurgical Engineering | 2025, 45(5): 136-141
• METALLURGY •
Pollution Status Assessment of Heavy Metals in Dalong River and Restoration with Sludge-Derived Biochar
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Qunbo QIAO1, Mingxiang ZHANG1, Bingyi HAN2, Weihua WANG3
Affiliations
  • 1.School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
  • 2.School of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
  • 3.Beijing Beikong Industrial Environmental Technology Co., Ltd., Beijing 101407, China
Published: 2025-10-01 doi: 10.3969/j.issn.0253-6099.2025.05.024
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Heavy metal pollution in Dalong River was assessed by field sampling and detection analysis. Hg(II) and Pb(II) in the water and sediment were adsorbed with sludge-derived biochar for ecosystem restoration in Dalong River, and the restoration effect was then compared with that by using activated carbon. The results indicate that heavy metal pollution in Dalong River is relatively slight, and the contents of heavy metals in the surface water at all sampling points are within a safe range, only the sediment at some sampling points has the heavy metal pollution at a light pollution level. It is shown that sludge-derived biochar has a good adsorption for Hg(II) and Pb(II), with the adsorption process conforming to the Langmuir isotherm (with R2 of 0.932 2 and 0.998 9). Compared with activated carbon, the sludge-derived biochar can bring better restoration effect, and its desorption of Hg(II) and Pb(II) also shows that it can have a significantly better fixation effect of heavy metals.

water treatment  /  heavy metal pollution  /  pollution assessment  /  sludge-derived biochar  /  activated carbon  /  adsorbent  /  desorption  /  ecological restoration
Qunbo QIAO, Mingxiang ZHANG, Bingyi HAN, Weihua WANG. Pollution Status Assessment of Heavy Metals in Dalong River and Restoration with Sludge-Derived Biochar[J]. Mining and Metallurgical Engineering, 2025 , 45 (5) : 136 -141 . DOI: 10.3969/j.issn.0253-6099.2025.05.024
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doi: 10.3969/j.issn.0253-6099.2025.05.024
  • Receive Date：2025-03-20
  • Online Date：2026-03-18
  • Published：2025-10-01
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  • Received：2025-03-20
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Affiliations
    1.School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
    2.School of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
    3.Beijing Beikong Industrial Environmental Technology Co., Ltd., Beijing 101407, 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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