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首页> 外文期刊>Environmental Science & Technology >Occurrence of Pharmaceuticals in River Water and Their Elimination in a Pilot-Scale Drinking Water Treatment Plant
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Occurrence of Pharmaceuticals in River Water and Their Elimination in a Pilot-Scale Drinking Water Treatment Plant

机译：中试饮用水处理厂中河水中药物的产生及其消除

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The occurrence of four beta blockers, one antiepileptic drug, one lipid regulator, four anti-inflammatories, and three fluoroquinolones was studied in a river receiving sewage effluents. All compounds but two of the fluoroquinolones were observed in the water above their limit of quantification concentrations. The highest concentrations (up to 107 ng L~(-1)) of the compounds were measured during the winter months. The river water was passed to a pilot-scale drinking water treatment plant, and the elimination of the Pharmaceuticals was followed during the treatment. The processes applied by the plant consisted of ferric salt coagulation, rapid sand filtration, ozonation, two-stage granular activated carbon filtration (GAC), and UV disinfection. Following the coagulation, sedimentation, and rapid sand filtration, the studied Pharmaceuticals were found to be eliminated only by an average of 13%. An efficient elimination was found to take place during ozonation at an ozone dose of about 1 mg L~(-1) (i.e., 0.2-0.4 mg of O_3/mgrnof TOC). Following this treatment, the concentrations of the Pharmaceuticals dropped to below the quantification limits with the exception of ciprofloxacin. Atenolol, sotalol, and ciprofloxacin, the most hydrophilic of the studied Pharmaceuticals, were not fully eliminated during the GAC filtrations. All in all, the treatment train was found to very effectively eliminate the Pharmaceuticals from the raw water. The only compound that was found to pass almost unaffected through all the treatment steps was ciprofloxacin.
机译：在接受污水的河流中研究了四种β受体阻滞剂，一种抗癫痫药，一种脂质调节剂，四种抗炎药和三种氟喹诺酮类药物的发生。在水中，除了两个氟喹诺酮类化合物外，所有化合物均超出其定量浓度极限。在冬季，测定了这些化合物的最高浓度（高达107 ng L〜（-1））。将河水输送到中试规模的饮用水处理厂，在处理过程中遵循了消除药剂的规定。该工厂采用的过程包括铁盐凝结，快速砂滤，臭氧化，两阶段颗粒活性炭过滤（GAC）和紫外线消毒。经过凝结，沉淀和快速砂滤后，发现所研究的药物平均仅被淘汰13％。发现在臭氧化期间以约1mg L-1（-1）的臭氧剂量（即0.2-0.4mg O_3 / mgrnof TOC）发生有效消除。该处理后，除环丙沙星外，药物的浓度均降至定量限以下。在研究的药物中，亲水性最高的阿替洛尔，索他洛尔和环丙沙星在GAC过滤过程中并未完全消除。总而言之，发现处理程序可以非常有效地从原水中消除药物。发现在所有治疗步骤中几乎不受影响的唯一化合物是环丙沙星。

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