ZHANYong,CAORun-qin,XUJing-jing,et al.Ecological Risk Assessment of Heavy Metals and Polycyclic Aromatic Hydrocarbons in Printing and Dyeing Sludge[J].China Water & Wastewater,2025,41(13):119-125.
印染污泥中重金属和多环芳烃生态风险评估
- Title:
- Ecological Risk Assessment of Heavy Metals and Polycyclic Aromatic Hydrocarbons in Printing and Dyeing Sludge
- 摘要:
- 印染污泥存在重金属和多环芳烃等污染物超标问题，为明晰填埋场多年矿化后的污泥中重金属和多环芳烃的生态风险，采集苏州某印染污泥填埋场10个采样点矿化污泥样品，采用地累积指数（Igeo）、个体潜在生态风险指数（Eir）、污染负荷指数（PLI）和潜在生态风险指数（RI）等污染指标评价重金属污染现状和潜在生态风险。根据Igeo结果显示，重金属Zn（3.45）和Hg（3.48）存在多个中度污染点位，是污染程度较大的潜在有毒污染物；Eir中最高的为Hg（302.93），在单项潜在风险中为高风险，污染较大；PLI结果显示SZ3、SZ6和SZ7点位的PLI均大于6，处于重度污染水平；RI结果显示，SZ3（2 398.78）、SZ4（402.60）和SZ6号（521.33）点位均处于较高风险水平，且占比最大的重金属为Hg。该填埋场污泥重金属整体处于中度污染水平，潜在生态风险较高，其中特别需要注意的是金属Hg和Zn，均对人体有毒性。考虑到多环芳烃对人类健康和生态环境的致癌性和毒性，根据沉积物质量指南分析了多环芳烃的分布和潜在生态风险，结果显示该填埋场污泥中多环芳烃生物毒副作用不明显，生态风险较低，但个别采样点多环芳烃单体浓度较高，对生物体暴露会产生威胁，需引起重视。
- Abstract:
- There are significant concerns regarding excessive pollutants such as heavy metals and polycyclic aromatic hydrocarbons (PAHs) in printing and dyeing sludge. To elucidate the ecological risks associated with heavy metals and PAHs in sludge that has undergone long-term mineralization in a landfill, mineralized sludge samples were collected from 10 sampling points at a printing and dyeing sludge landfill in Suzhou, and the current status and potential ecological risks of heavy metal pollution was evaluated using several pollution indicators, including ground accumulation index (Igeo), individual potential ecological risk index (Eir), pollution load index (PLI) and potential ecological risk index (RI). According to the Igeo results, multiple sites exhibited moderate pollution levels for heavy metals zinc (Zn, 3.45) and mercury (Hg, 3.48). These elements are potential toxic pollutants associated with a relatively high degree of contamination. The highest value of Eir?was observed for Hg (302.93), indicating a significant single-potential risk and substantial pollution. The PLI analysis revealed that the PLI values at points of SZ3, SZ6, and SZ7 exceeded 6, signifying severe pollution levels. Furthermore, the RI results demonstrated that points of SZ3 (2 398.78), SZ4 (402.60), and SZ6 (521.33) were at relatively high risk levels, with mercury (Hg) being the predominant heavy metal contributing to the pollution. The heavy metals in landfill sludge are typically present at a moderate pollution level, posing a relatively high potential ecological risk. Notably, it is crucial to emphasize that both Hg and Zn are toxic to the human body. Considering the carcinogenic and toxic effects of PAHs on human health and the ecological environment, the distribution characteristics and potential ecological risks of PAHs were analyzed based on sediment quality guidelines. The results indicated that the biotoxic side effects of PAHs in the landfill sludge were not significant, suggesting a relatively low overall ecological risk. However, the concentration of certain PAH monomers was relatively high at specific sampling points, which may pose a threat to organisms upon exposure and warrants further attention.
相似文献/References:
[1]李风亭,李杰,王颖,等.饮用水用聚氯化铝新标准的实施与产业影响分析[J].中国给水排水,2022,38(4):33.
LIFeng-ting,LIJie,WANGYing,et al.Implementation of New Standard of Polyaluminum Chloride for Drinking Water Treatment and Its Industrial Impact Analysis[J].China Water & Wastewater,2022,38(13):33.
[2]夏文林,黄伟.黑臭水体综合治理工程中河道底泥清淤深度的确定[J].中国给水排水,2022,38(6):44.
XIA Wen-lin,HUANGWei.Determination on Dredging Depth of River Sediment in the Comprehensive Treatment Project of Black and Odorous Water Bodies[J].China Water & Wastewater,2022,38(13):44.
[3]杨帆,何丹丹,袁隆湖,等.湖南省水域底泥污染评价及资源化利用分析[J].中国给水排水,2022,38(13):97.
YANGFang,HEDan-dan,YUANLong-hu,et al.Assessment of Sediment Pollution and Its Resource Utilization in the Water Areas of Hunan Province[J].China Water & Wastewater,2022,38(13):97.
[4]郝晓地,郭小媛,时琛,等.污泥焚烧灰分磷回收Ash Dec工艺及其研究进展[J].中国给水排水,2022,38(14):17.
HAOXiao-di,GUOXiao-yuan,SHIChen,et al.Advances in the Ash Dec Process for Phosphorus Recovery from Sludge Incineration Ash[J].China Water & Wastewater,2022,38(13):17.
[5]周维奇,方宁,郭亚丽,等.基于多源污泥泥质特性的处理技术路径探析[J].中国给水排水,2022,38(19):16.
ZHOUWei-qi,FANGNing,GUOYa-li,et al.Treatment Technology Path Based on the Characteristics of Multi-source Sludge[J].China Water & Wastewater,2022,38(13):16.
[6]曹汉鹏,李海燕,张轶慧,等.建筑垃圾再生骨料用于透水铺装去除重金属研究[J].中国给水排水,2023,39(1):126.
CAO Han-peng,LI Hai-yan,ZHANG Yi-hui,et al.Construction Waste Recycled Aggregate for Heavy Metals Removal in Permeable Pavement[J].China Water & Wastewater,2023,39(13):126.
[7]张国珍,高广辉,汪光宗,等.西北高寒牧区水质评价与重金属健康风险评估[J].中国给水排水,2023,39(11):42.
ZHANGGuo-zhen,GAOGuang-hui,WANGGuang-zong,et al.Water Quality Assessment and Heavy Metal Health Risk Evaluation in Northwest Alpine Pastoral Area[J].China Water & Wastewater,2023,39(13):42.
[8]李军,焦亮,李开明,等.黄河兰州段城市河道重金属污染特征及健康风险评价[J].中国给水排水,2023,39(15):81.
LIJun,JIAOLiang,LIKai-ming,et al.Characteristics and Health Risk Assessment of Heavy Metal Contamination from Urban River Surface Sediments in the Lanzhou Reach of the Yellow River[J].China Water & Wastewater,2023,39(13):81.
[9]郝晓地,李佳勇,郝丽婷,等.剩余污泥制取生物炭可行性分析与评价[J].中国给水排水,2023,39(20):1.
HAOXiao-di,LIJia-yong,HAOLi-ting,et al.Analysis and Assessment on the Feasibility of Sludge-based Biochar[J].China Water & Wastewater,2023,39(13):1.
[10]刘霖皓,程麒铭,陈垚,等.生物滞留系统去除典型重金属的影响因素识别[J].中国给水排水,2023,39(23):124.
LIULin-hao,CHENGQi-ming,CHENYao,et al.Identification of Influencing Factors for Removal of Typical Heavy Metals in Bioretention System[J].China Water & Wastewater,2023,39(13):124.