采用非均相电芬顿和电絮凝组合工艺处理混合工业废水。
Mixed industrial wastewater treatment by the combination of heterogeneous electro-Fenton and electrocoagulation processes.
机构信息
CSIR- National Environmental Engineering Research Institute, Nagpur, Maharashtra, India.
CSIR- National Environmental Engineering Research Institute, Nagpur, Maharashtra, India; Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
出版信息
Chemosphere. 2022 Mar;290:133348. doi: 10.1016/j.chemosphere.2021.133348. Epub 2021 Dec 16.
Mixed industrial wastewater treatment efficiency of combined electro-Fenton (EF) and electrocoagulation (EC) processes was investigated in the present study. Alkali modified laterite soil was used as a heterogeneous EF catalyst and found superior performance than the raw laterite soil. Initially, the effect of catalyst dosage, initial pH, and applied voltage on the performance of EF process was carried out. A total of 54.57% COD removal was observed after 60 min of the EF treatment. Further treatment was carried out with EC process at different voltages. A total of 85.27% COD removal after 2 h treatment was observed by combining two electrochemical processes. Performance of EF followed by EC (EF + EC) process was compared with EC followed by EF (EC + EF) process. Even though efficiency is the same, EF + EC is a better strategy than EC + EF as it nullifies the neutralization requirement after EF process in addition to high mineralization efficiency, enhanced biodegradability, and lesser sludge generation.
本研究考察了联合电芬顿（EF）和电絮凝（EC）工艺处理混合工业废水的效率。用碱性改性红土作为非均相 EF 催化剂，其性能优于原红土。首先，考察了催化剂用量、初始 pH 值和施加电压对 EF 工艺性能的影响。EF 处理 60 分钟后，COD 去除率达到 54.57%。然后在不同电压下进行 EC 处理。通过两种电化学过程的结合，2 小时处理后 COD 去除率达到 85.27%。比较了 EF 后接 EC（EF+EC）工艺和 EC 后接 EF（EC+EF）工艺的性能。尽管效率相同，但 EF+EC 比 EC+EF 更好，因为它除了具有高矿化效率、增强的生物降解性和更少的污泥生成外，还消除了 EF 工艺后的中和要求。
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