精品文档---下载后可任意编辑单质铁、离子交换树脂联合处理化学化工实验室废水的讨论摘要：通过调查、采样分析化工实验大楼的实验室废水中 COD 以及镉、铬、锌、铜、铅等各种金属离子的污染程度。讨论单质铁、离子交换树脂联合处理后的废水中的 COD 和重金属离子的去除情况。结果说明，铁屑投加量在 20g/L—50g/L 阶段时，COD 的去除效果最好,去除率为 91.76%。在 Fe 参加量为 35g/L—45g/L 之间时，废水中的 COD 均到达排放标准。且 Fe 参加量为 35g/L 时处理效果最好,去除率为 94.26%。即铁屑的最正确投药量为 35g/L。各重金属离子的浓度随着树脂投加量的增加而降低，当树脂量到达 100g/L以后，出水中的重金属离子浓度全部到达国家一级排放标准。鉴于节约处理费用，树脂的最正确投药量为 100g/L。当流速在 mL/min 以内时较好的处理效果 ,, , , ,锌离子浓度<1mg/L 到达国家一级排放标准。所以本实验处理流速控制为 mL/min，出水中各重金属离子浓度都可以到达国家?污水综合排放标准?GB8978-2024 一级标准。关键词:化学实验室废水；单质铁；离子交换 Elemental iron, ion exchange resin combination of wastewater treatment chemical chemistry labLiu Weiguo(Water supply and drainage 0601, School of Environmental and Biological Engineering)精品文档---下载后可任意编辑Abstract: Through the investigation and analysis of chemical experiment of sampling in laboratory building wastewater COD and cadmium, chromium, zinc, copper, lead, etc all kinds of metal ions and pollution degree. Elemental research, ion exchange resin wastewater treatment in combination of COD and heavy metal ions removal. Results show that the optimum dosing quantity in 20g/L - 50g/L, COD removal efficiency 91.76% for the best effect. Fe in addition of 35g/L/L 45g - between the COD, wastewater discharge standards are reached. Fe and to 35g/L treatment for the best effect, 94.26% removal. The best medicine is cast iron for 35g/L.The heavy metal ion concentration with resin dosing quantity increases, when the resin content,...
