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Integration of aerobic granulation and UV/H2O2 processes in a continuous flow system for the degradation of sulfolane in contaminated water
Environmental Science: Water Research & Technology ( IF 5 ) Pub Date : 2020-05-06 , DOI: 10.1039/c9ew01048c
Muhammad Faizan Khan 1, 2, 3, 4 , Linlong Yu 1, 2, 3, 4 , Jordan Hollman 1, 2, 3, 4 , Joo Hwa Tay 1, 2, 3, 4 , Gopal Achari 1, 2, 3, 4
Affiliation  

Sulfolane contamination has increasingly become a major environmental concern around the world with emerging reports of groundwater, drinking water wells and soil contamination. In this study, a novel approach of integrating aerobic granulation technology with UV/H2O2 process in a continuous flow-through operation sequence was investigated to remediate sulfolane contaminated waters. The new hybrid technology was able to eliminate more than 99.99% of sulfolane in less than 6.3 h of combined retention time. The degradation kinetics of sulfolane were evaluated in batch and continuous flow operation which showed zero and first order for aerobic granulation and UV/H2O2 processes, respectively. In addition, the flow-through system was able to generate and maintain a healthy aerobic granular system characterized by a stable MLVSS/MLSS ratio as well as elemental and bacterial community compositions within the granules. H2O2 concentration was a crucial element for sulfolane degradation in UV/H2O2 process and various key factors were also identified that govern residual H2O2 concentration in UV/H2O2 effluents.

中文翻译:

将好氧制粒和UV / H2O2工艺集成在连续流系统中,以降解污水中环丁砜

随着有关地下水,饮用水井和土壤污染的报道不断增多,环丁砜污染已成为世界范围内的主要环境问题。在这项研究中,研究了一种将好氧造粒技术与UV / H 2 O 2工艺相结合的新方法,该方法以连续的流通操作顺序进行处理,以修复环丁砜污染的水。新的混合技​​术能够在不到6.3小时的总保留时间内消除99.99%以上的环丁砜。分批和连续流操作对环丁砜的降解动力学进行了评估,结果表明好氧造粒和UV / H 2 O 2为零级和一级。流程。另外,流通系统能够产生并维持健康的需氧颗粒系统,其特征在于稳定的MLVSS / MLSS比率以及颗粒内的元素和细菌群落组成。H 2 O 2浓度是UV / H 2 O 2工艺中环丁砜降解的关键因素,并且还确定了控制UV / H 2 O 2废水中残留H 2 O 2浓度的各种关键因素。
更新日期:2020-05-06
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