Infuence of Selected Pharmaceuticals on Biogas Production in Mesophilic Anaerobic Fermentation

Kristína Šefčovičová, I. Bodík, Veronika Kvorková, J. Michálek, Andrey Korshunov, M. Soldán
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Abstract

Abstract This article deals with pharmaceutical compounds as micropollutants in anaerobic digestion of sludge from waste water treatment plant (WWTP). Part of the work included the research into presence of pharmaceuticals in different types of waters. Description of anaerobic fermentation process is also important in terms of optimal conditions. The practical aim of the investigation was preparation of a model of anaerobic fermentation of sewage sludge, where influence of pharmaceuticals on mesophilic anaerobic digestion was monitored. Wash out of micropollutants from sludge in big semicontinuous anaerobic reactors was running since October 2013. The resulting non-adapted sludge from mesophilic reactor was used since March 2014 for pharmaceuticals tests in half-a-litre glass bottles with a septum cap. The compounds of interest were diclofenac, tramadol, ibuprofen, carbamazepine and amoxicillin and their concentration in the tested sludge was 10 μg/L and 500 μg/L. The results showed that pharmaceuticals have different influence on the amount of produced biogas even if they are from the same therapeutic group. In the low concentration, the inhibition was present for diclofenac, carbamazepine and amoxicillin, at the high concentration, while diclofenac showed almost no influence. Other compounds caused a stimulative effect on the process. The mixture of all pharmaceuticals of interest in low concentration was stimulative at first, while it was inhibotory since mid-time of the test.
选定药物对中温厌氧发酵产气的影响
摘要本文研究了药物类化合物作为微污染物在污水处理厂污泥厌氧消化中的作用。部分工作包括研究药物在不同类型的水中的存在。厌氧发酵过程的描述在最佳条件方面也很重要。本研究的实际目的是制备污水污泥厌氧发酵模型,监测药物对中温厌氧消化的影响。大型半连续厌氧反应器自2013年10月开始运行,以去除污泥中的微污染物。自2014年3月起,使用中温反应器产生的未适应污泥在半升带隔盖的玻璃瓶中进行药物试验。感兴趣的化合物为双氯芬酸、曲马多、布洛芬、卡马西平和阿莫西林,其在试验污泥中的浓度为10 μg/L和500 μg/L。结果表明,即使来自同一治疗组的药物对产生的沼气量也有不同的影响。在低浓度条件下,双氯芬酸、卡马西平和阿莫西林均有抑制作用,而在高浓度条件下,双氯芬酸几乎没有影响。其他化合物对这一过程有促进作用。所有感兴趣的药物的混合物在低浓度时,一开始是刺激性的,而从试验中期开始是抑制性的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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