药物及个人护理产品(Pharmaceuticals and personal care products, PPCPs)是一类普遍存在于环境中的微量有机污染物,其浓度常在ng/L-μg/L水平。由于个人和畜牧业中大量而频繁的使用,导致其在环境中形成假性持续性现象。众多的研究结果表明,在低浓度药物中长期暴露是导致微生态动植物基因改变、造成细菌耐药性及形成水环境中内分泌干扰作用的重要原因。由于PPCPs在污水厂中不能完全被去除,导致其通过污水排放或污水回用进入到自然环境当中,因此,有必要寻求一种高效经济的新工艺或新技术以提高PPCPs的去除效率。
本论文以目前发现的在环境中存在最为持久的药物之一氯贝酸(降血脂药物的有效成分及代谢产物)为研究对象,比较了同样条件ultraviolet (UV)、vacuum ultraviolet (VUV)、UV/H2O2、VUV/H2O2工艺的降解效果,考察了H202投加量、氯贝酸初始浓度、溶液初始pH值、阴离子(Cl-、SO42-、NO3-、HCO3-)和有机质(腐殖酸)等的影响。以UV/H2O2工艺为对象,主要研究了温度在氯贝酸去除过程中所起的作用。研究了夏季及冬季...
【英文摘要】
Pharmaceuticals and personal care products (PPCPs) have been frequently detected at ng/L-μg/L levels (trace concentration) worldwide in the environment. Due to the large consumption of human and veterinary medicines, these compounds can be persistent in aquatic environment. Numerous researches showed that the long-term exposure to low concentration of pharmaceutical compounds has been regarded as the main reason to the change of genes in aquatic organisms, development of bacterial resistance to antibiotics ...