期刊
WATER RESEARCH
卷 93, 期 -, 页码 214-221出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2016.02.028
关键词
Wastewater treatment; Biological treatment; Electron beam irradiation; Zero-valent nano iron; Metalworking fluid; COD
资金
- STFC CLASP [ST/K006568/1]
- Engineering and Physical Sciences Research Council [1511010, 1337652] Funding Source: researchfish
- Science and Technology Facilities Council [ST/K006568/1, ST/K006487/1] Funding Source: researchfish
- STFC [ST/K006487/1, ST/K006568/1] Funding Source: UKRI
Hybrid approaches for the remediation and detoxification of toxic recalcitrant industrial wastewater were investigated. The focus was waste metalworking fluid, which was selected as a representative model of other waste streams that are toxic, recalcitrant and that require more sustainable routes of safe disposal. The hybrid approaches included biodegradation, electron beam irradiation and zero-valent nano iron advanced oxidation processes that were employed individually and in sequence employing a factorial design. To compare process performance operationally exhausted and pristine metalworking fluid were compared. Sequential hybrid electron beam irradiation, biological, nanoscale zero-valent iron and biological treatment lead to synergistic detoxification and degradation of both recalcitrant streams, as determined by complementary surrogates and lead to overall improved COD removal of 92.8 +/- 1.4% up from 85.9 +/- 3.4% for the pristine metalworking fluid. Electron beam pre-treatment enabled more effective biotreatment, achieving 69.5 +/- 8% (p = 0.005) and 24.6 +/- 4.8% (p = 0.044) COD reductions. (C) 2016 Published by Elsevier Ltd.
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