Implementing chemical mass balance model and vulnerability the theories to realize the comprehensive evaluation in an abandoned battery plant
Implementing chemical mass balance model and vulnerability the theories to realize the comprehensive evaluation in an abandoned battery plant
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运用化学质量平衡模型和脆弱性理论实现废弃电池厂的综合评价
DOI：
10.1016/j.scitotenv.2019.05.025
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发表时间：
2019
影响因子：
9.8
通讯作者：
Duan Yaxiao
中科院分区：
文献类型：
--
作者：
Lai Yuxian;Wang Fei;Zhang Yimei;Li Shuai;Wu Panpan;Ou Ping;Fang Qinglu;Chen Zhuang;Duan Yaxiao
在中国，地下水污染已成为一个严重的问题。污染场地的评估和补救非常重要。此外，只有少数研究涉及金属形态对人类健康风险评估的影响。本文提出了一种将人体健康风险评价与地下水脆弱性评价相结合的污染区综合评价方法，探索了一种更为合理的Cd形态模拟模型，并采用精确的方法通过权重分析计算出污染区的平均日剂量。应用PHREEQC和Visual MINTEQ软件进行形态学模拟比较，研究平均日剂量修正和未修正的情况，计算致癌和非致癌风险。采用DRASTIC模型对地下水脆弱性进行评价，以DRASTIC指数作为地下水脆弱性的指标。PHREEQC和Visual MINTEQ分别模拟了20种和13种金属形态。Cd ~（2+）和CdCl ~+是地下水中Cd的主要赋存形态。结果显示改良的平均日剂量低于平均日剂量。致癌风险表明，PHREEQC模拟了对人体健康有害的Cd 2+和CdCl+的形态。研究区的DRASTIC指数在109 ~ 134之间，属于污染敏感区。该方法提供了一个更为有效的风险评估模型，为政府决策和场地修复提供了基础性建议。
In China groundwater contamination has become a serious problem. The assessment and remediation of contaminated sites are greatly important. Moreover, only few studies deal with the influence of metal speciation on human health risk assessment. This paper proposed a comprehensive assessment methodology combined human health risk assessment and groundwater vulnerability assessment for contaminated area, exploring a more reasonable model for the Cd morphology simulation, and utilizing accurate method to calculate the average daily dose by the weight analysis. PHREEQC and Visual MINTEQ were applied and compared to the morphology simulation, the modified of average daily dose and non-modified of average daily dose was investigated, carcinogenic and non-carcinogenic risks were calculated subsequently. The groundwater vulnerability was assessed by the DRASTIC model, the DRASTIC index as the indicator of groundwater vulnerability. The morphology simulation results showed 20 and 13 metal species which were simulated by PHREEQC and Visual MINTEQ, respectively. Cd2+and CdCl+were the primary species of Cd in groundwater. The modified average daily dose showed less than the average daily dose in results. The carcinogenic risks showed the species of Cd2+and CdCl+were simulated by PHREEQC which were harmful to human health. The DRASTIC index was ranged from 109 to 134 in the studied area, which showed that the area was susceptible to pollution. This method provided a more effective risk assessment model and supplied a fundamental advice for government policy-making and site remediation.