Advanced treatment of wastewater from sauce-flavor Baijiu production with reusing distillers' grains by Cu/AC ozone catalytic oxidation
Year: 2024
Type: article
Abstract: The advanced treatment effect of the micro-bubble ozone catalytic oxidation process with copper oxide loaded on activated carbon (Cu/AC) as catalyst on biochemical effluent from sauce-flavor (Jiangxiangxing) Baijiu production with reusing distillers' grains wastewater was studied. The results showed that the catalyst addition in sequence batch reactors was 15 g/L, the ozone addition was 12.5 mg/min, and initial pH was 7.5, the removal efficiencies of chemical oxygen demand (COD) and ultra violet absorption value at wavelength 254 nm (UV254) were 79.0% and 94.7%, respectively. After multiple cycles of catalyst usage, the decreases in COD and UV254 removal efficiencies were less than 5%. Characterization revealed a smooth morphology of the catalyst surface, with copper predominantly existing as CuO and dispersed on AC, enhancing catalytic performance. The removal efficiencies of COD and UV254 remained at 76% and 92% after long-term continuous operation, indicating strong stability and shock resistance. The results provided a reference for the application of the micro-bubble ozone catalytic oxidation system in treating wastewater from sauce-flavor Baijiu production with reusing distillers' grains.
Author: LI Bowen, LIANG Jiawei, DAI Jihua, WAN Dongjin, LI Shengfei, MAI Wenning, ZHANG Po
Institutions: Henan University of Technology, Zhengzhou University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6959717044
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