Abstract:

In this work, a theoretical analysis method is proposed to analyze the theoretical energy consumption for the organic contaminant mineralization by advanced oxidation processes (AOPs) with the process coupling design framework. Moreover, the theoretical energy consumption for the mineralization of 1000 kg19 representative organic contaminants (8 chlorinated alkyl hydrocarbons, 4 chlorinated alkenes, 3 brominated methanes, 4 aromatic hydrocarbons and their derivatives) by four possible oxidants in AOPs was investigated and compared with that of 1000kg organic contaminants removal by
physical procedures.The results show that the mineralization of the organic contaminants in AOPs is exothermic, and the theoretical energy consumption in AOPs is higher with orders of magnitude compared with that by physical methods. The theoretical energy consumption for organic contaminant mineralization decreases with the more C—H bonds being replaced by C—Cl or C—Br bonds in chlorinated alkyl hydrocarbons, ethenes or brominated methanes, and the theoretical energy consumption follows the order：chlorinated methanes < chlorinated ethanes < chlorinated propanes, which agrees with that by physical methods. Moreover, the theoretical energy consumption for mineralization of chlorinated methane with different oxidants in AOPs follows the order：O₃>O^->·OH>O₂， while for other systems investigated, the order of the theoretical energy consumption is O^->O₃>·OH>O₂.

摘要：

通过过程耦合的概念建立了高级氧化技术矿化有机污染物理论极限能耗的计算方法，并分析了通过与高级氧化技术中4种可能的氧化剂矿化反应分别去除1000 kg19种代表性有机污染物（8种氯代烷烃、4种氯代烯烃、3种溴代甲烷、4种芳香烃及其衍生物）的理论极限能耗，将计算结果与物理法脱除有机污染物的理论能耗进行了比较分析。研究结果表明，高级氧化技术矿化水中有机污染物为放热过程，且高级氧化技术矿化水中有机污染物理论极限能耗较物理法脱除有机污染物极限能耗有高出数量级的差别。矿化氯代烷烃、氯代烯烃和溴代烷烃的理论极限能耗随着有机物中C—Cl或C—Br取代基的增加而普遍降低，且矿化氯代烷烃的理论极限能耗大小为氯代甲烷<氯代乙烷<氯代丙烷， 该结论与物理法脱除有机污染物理论能耗规律一致。此外，不同氧化剂矿化氯甲烷的理论极限能耗为O₃>O^->·OH>O₂；而对其他研究体系而言，不同氧化剂矿化的理论极限能耗为O^->O³>·OH>O₂。