Abstract：
Hexachlorocyclohexanes (HCH) isomers and their transformation products, such as chlorobenzenes (ClB), generate severe and persistent environmental problems at many sites worldwide. The Wetland technology employing oxidation-reduction, biosorption, biodegradation and phytoremediation methods can sufficiently treat HCH-contaminated water. The treatment process is inherently natural and requires no supplementary chemicals or energy. The prototype with a capacity of 3 L/s was installed at Hajek quarry spoil heap (CZ), to optimize the technology on a full scale. The system is fed by drainage water with an average concentration of HCH 129 μg/L, ClB 640 μg/L and chlorophenols (ClPh) of 16 μg/L. The system was tested in two years of operation, regularly monitored for HCH, ClB and ClPh, and maintained to improve its efficiency. The assessment was not only for environmental effects but also for socio and economic indicators. During the operation, the removal efficiency of HCH ranged from 53.5 % to 96.9 % (83.9 % on average) depending on the flow rate. Removal efficiency was not uniform for individual HCH isomers but exhibited the trend: α = γ = δ > β = ε. The improved water quality was reflected in a biodiversity increase expressed by a number of phytobenthos (diatoms) species, a common biomarker of aquatic environment quality. The Wetland outranked the conventional WWTP in 10 out of the 15 general categories, and it is the most relevant scenario from the socio, environmental, and economic aspects.
摘要：
六氯环己烷（HCH）异构体及其转化产物，例如氯苯（ClB），在世界各地的许多地点产生严重和持续的环境问题。采用氧化还原的湿地技术，生物吸附，生物降解和植物修复方法可以充分处理六氯环己烷污染的水。处理过程本质上是自然的，不需要补充化学物质或能量。容量为3L/s的原型安装在Hajek采石场废渣堆（CZ），全面优化技术。该系统由平均浓度为129μg/L的六氯环己烷的废水进料，ClB640μg/L和氯酚（ClPh）为16μg/L。该系统在两年的运行中进行了测试,定期监测六氯环己烷，ClB和ClPh,并保持以提高效率。评估不仅针对环境影响，还针对社会和经济指标。在操作过程中,根据流量的不同，六氯环己烷的去除率从53.5%到96.9%(平均83.9%)。单个六氯环己烷异构体的去除效率不均匀，但表现出趋势：α=γ=δ>β=ε。水质的改善反映在许多植物底栖动物（硅藻）物种表示的生物多样性增加中，水环境质量的常见生物标志物。在15个一般类别中，湿地超过了常规污水处理厂的10个，这是社会上最相关的场景，环境,和经济方面。
