摘要
近些年,随着新能源行业的迅猛发展,其主要产品-锂盐(LiFSI)的生产也带来了新的环境污染物质。LiFSI生产产生的废水具有高COD、高盐的特点,较常规的物化、生化处理,处理成本高且难以达到排放标准的要求,本文采用一种新的处理工艺-低温蒸发+紫外芬顿法,研究了此工艺在不同条件下处理该类废水的处理效率;采用低温蒸发-紫外芬顿工艺,通过实验室小试及车间中试实验,发现该工艺针对含甲醇、碳酸二甲酯、碳酸乙烯酯、VC、乙二醇等有机物,COD达10000 mg/L,电导率在6000~8000μS/cm之间的高盐高浓度废水,其COD去除率达80%以上,盐去除率达99%以上,且该工艺具有节能、环保、运行费用低的特点。
In recent years,with the rapid development of the new energy industry,the production of its main product,lithium salt(LiFSI),has introduced new environmental pollutants.The wastewater from LiFSI production is characterized by high COD and high salinity.Compared with conventional physicochemical and biochemical treatments,it incurs higher treatment costs and struggles to meet discharge standards.A novel treatment process,low-temperature evaporation combined with UV-Fenton method,was employed to evaluate its efficiency under different conditions.Through laboratory and pilot-scale experiments,the process was found suitable for treating high-salinity,high-concentration wastewater containing organic compounds such as methanol,dimethyl carbonate,vinyl carbonate(VC)and ethylene glycol.The lowtemperature evaporation-UV-Fenton process can handle wastewater with a COD concentration of 10000 mg/L and conductivity of 6000 to 8000μS/cm,achieving a COD removal rate of over 80%and a desalination rate of over 99%.This process featured energy efficiency,environmental friendliness and low operating costs.
作者
张安
ZHANG An(Shenzhen Capchem Technology Co.,Ltd.,Guangdong Shenzhen 518000,China)
出处
《广州化工》
2025年第13期109-111,126,共4页
GuangZhou Chemical Industry
关键词
紫外-芬顿
低温蒸发
锂盐废水
化工废水
UV-Fenton
low temperature evaporation
lithium salt wastewater
chemical wastewater
