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Cu/AC臭氧催化氧化深度处理复糟酱香型白酒废水
Advanced treatment of wastewater from sauce-flavor Baijiu production with reusing distillers’ grains by Cu/AC ozone catalytic oxidation
【摘要】 该实验考察了活性炭负载铜氧化物(Cu/AC)为催化剂的微气泡臭氧催化氧化工艺对复糟酱香型白酒废水生化出水的深度处理效果。结果表明,序批式反应中催化剂投加量为15 g/L,臭氧投加量为12.5 mg/min,初始pH为7.5时,在此条件下,化学需氧量(COD)和波长254 nm处紫外吸光值(UV254)去除率分别为79.0%和94.7%。催化剂多次使用后COD和UV254去除率下降幅度均<5%。表征结果显示,催化剂表面形态平整,铜元素主要以CuO的形式存在并分散在AC上,有利于提升催化性能。经过长时间连续运行,COD和UV254去除率仍能达到76%和92%,有较强稳定性和抗冲击能力。研究结果为微气泡臭氧催化氧化体系在复糟酱香白酒废水处理领域应用提供参考。
【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 UV254removal 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 UV254remained 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.
- 【文献出处】 中国酿造 ,China Brewing , 编辑部邮箱 ,2024年09期
- 【分类号】TQ426;X797
- 【下载频次】34