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首页> 外文期刊>Journal of Residuals Science & Technology >Presence of Pharmaceuticals and Personal Care Products (PPCPs) in Biosolids and Their Degradation during Composting
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Presence of Pharmaceuticals and Personal Care Products (PPCPs) in Biosolids and Their Degradation during Composting

机译：生物固体中药物和个人护理产品（PPCP）的存在及其在堆肥过程中的降解

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The presence of pharmaceuticals and personal care product (PPCPs) in biosolids generated during municipal wastewater treatment (WWTP) was monitored weekly for 19 weeks. Biosolids samples obtained from a local WWTP were subjected to extraction with Soxhlet? apparatus for 24 hours. The extracts were concentrated and analyzed with a gas chromatograph-mass spectrometer. Therewere 18 compounds representing a wide range of origins identified in biosolids including phthalate esters, ibuprofen and galaxolide. Phthalate esters were the most frequently detected compounds; and 4-nonyl phenol was the most concentrated chemical at 210 mg/kg-dry weight basis. The efficacy of the composting process to degrade the 10 of the PPCP compounds was also investigated with and without spiking biosolids. Biosolids were amended with straw, and composted for up to 45 days using a laboratory-scale composting system. The lowest degradation rate was observed for 50.11% for octyl-4-methoxy cinnamate (OM) and the highest was 99.73% for butylated hydroxyl toluene (BHT). For all tested compounds except for unspiked OM, degradation efficiencies surpassed 85% at the end of the 45 days of composting study. The results of this study confirm the presence of various organic contaminants originated from personal care products in biosolids, and suggest that composting could be an effective treatment alternative for biosolids.
机译：每周监测城市污水处理（WWTP）期间产生的生物固体中药物和个人护理产品（PPCP）的存在，持续19周。从当地污水处理厂获得的生物固体样品用索氏提取仪进行萃取。仪器24小时。将提取物浓缩并用气相色谱-质谱仪分析。在生物固体中鉴定出18种代表广泛来源的化合物，包括邻苯二甲酸酯，布洛芬和Galaxolide。邻苯二甲酸酯是最常检测到的化合物。以210 mg / kg干重计，4-壬基苯酚是最浓缩的化学品。还研究了在有或没有掺加生物固体的情况下，堆肥过程降解10种PPCP化合物的功效。用秸秆修正生物固体，并使用实验室规模的堆肥系统堆肥长达45天。对于4-甲氧基肉桂酸辛酯（OM），观察到最低的降解率是50.11％，而对于丁基化羟基甲苯（BHT）则观察到了最高的99.73％。在未堆肥的OM中，对于所有测试的化合物，堆肥研究45天结束时，其降解效率均超过了85％。这项研究的结果证实了生物固体中存在来自个人护理产品的各种有机污染物，并表明堆肥可以作为生物固体的有效替代处理方法。

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