| 经济快速发展区六氯丁二烯的来源与分布特征 |
| 摘要点击 2270 全文点击 744 投稿时间：2020-09-08 修订日期：2020-10-14 |
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| 中文关键词 经济快速发展区 六氯丁二烯(HCBD) 氯代烃生产 污水处理厂 环境分布 |
| 英文关键词 rapid economic development area hexachlorobutadiene (HCBD) chlorinated hydrocarbon production wastewater treatment plants environmental distribution |
| 作者 | 单位 | E-mail | | 陶誉铭 | 长春理工大学化学与环境工程学院, 长春 130022
中国科学院生态环境研究中心, 北京 100085 | taoyuming95@163.com | | 孟晶 | 中国科学院生态环境研究中心, 北京 100085
中国科学院大学, 北京 100049 | | | 李倩倩 | 中国科学院生态环境研究中心, 北京 100085
中国科学院大学, 北京 100049 | | | 史斌 | 中国科学院生态环境研究中心, 北京 100085
中国科学院大学, 北京 100049 | | | 苏贵金 | 中国科学院生态环境研究中心, 北京 100085
中国科学院大学, 北京 100049 | gjsu@rcees.ac.cn | | 郭立新 | 长春理工大学化学与环境工程学院, 长春 130022 | guolixin@cust.edu.cn |
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| 中文摘要 |
| 为解析长三角、京津冀和珠三角地区六氯丁二烯（HCBD）来源及分布特征，基于三大区域氯代烃生产水平及废水排放情况对三大区域HCBD排放来源及其在水体和土壤中的分布情况开展研究.结果表明，三氯乙烯（TCE）和四氯乙烯（PCE）生产副产物以及污水处理厂污水污泥排放成为三大区域HCBD主要来源.2018年三大区域中来自TCE和PCE生产副产物的HCBD总排放量为498.46 t，其中来自TCE生产副产物的占比为66.9%.三大区域工业及生活污水处理厂HCBD排放量分别为628.9 kg和254.6 kg.长三角地区氯代烃生产及污水处理厂HCBD排放量显著较高，分别为497.8 t和648 kg，而京津冀地区两类源排放量为0.37 t和125 kg，珠三角地区为0.29 t和110.3 kg.长三角、京津冀和珠三角地区自然水体中HCBD平均质量浓度分别为0.35、0.25和0.64 μg·L-1，饮用水中HCBD平均质量浓度为0.16、0.09和0.04 μg·L-1.城市饮用水中HCBD的整体水平较低.工业土壤中HCBD含量显著高于农田土壤，含量分别为9.3~24.6 ng·g-1和0.13~2.67 ng·g-1.与水体中HCBD污染情况相同，长三角地区土壤中HCBD污染最为严重，这与长三角地区HCBD排放量显著高于京津冀和珠三角地区相关，亟需引起重视. |
| 英文摘要 |
| In order to understand the sources and distribution characteristics of hexachlorobutadiene (HCBD) in the Yangtze River Delta (YRD), Beijing-Tianjin-Hebei (BTH), and Pearl River Delta (PRD), the emission sources, as well as their distribution in water and soil were analyzed based on the production levels of chlorinated hydrocarbons and wastewater discharge in the three regions. The results showed that the by-products of trichloroethylene (TCE) and tetrachloroethylene (PCE) and wastewater treatment plants were the main sources of HCBD in the three regions. In 2018, the total emissions of HCBD from by-products of TCE and PCE in the three regions were 498.46 t, among which the proportion of by-products of TCE was 66.9%. The HCBD emissions of the three regional industrial and domestic wastewater treatment plants were 628.9 kg and 254.6 kg, respectively. The emissions of HCBD from hydrocarbon chlorination production and wastewater treatment plants in YRD were significantly higher at 497.8 t and 648 kg, respectively, while the emissions from the two sources in BTH were 0.37 t and 125 kg, respectively, and in PRD they were 0.29 t and 110.3 kg, respectively. The average concentrations of HCBD in the natural water of YRD, BTH and PRD were 0.35, 0.25, and 0.64 μg·L-1, respectively, and in the drinking water concentrations were 0.16, 0.09, and 0.04 μg·L-1, respectively. The overall level of HCBD in urban drinking water was relatively low. The concentrations of HCBD in industrial soil were significantly higher than in farmland soil, at 9.3-24.6 ng·g-1 and 0.13-2.67 ng·g-1, respectively. Similar to the situation in water bodies, HCBD pollution in the soil of YRD was the most serious, which was related to the fact that HCBD emissions in YRD were significantly higher than in BTH and PRD. |
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