Deacetylated chitosan solution mixed with inorganic flocculant has a good flocculation and decoloration efficiency towards the waste printing and dyeing water. Some factors influencing the process such as amount of ch...Deacetylated chitosan solution mixed with inorganic flocculant has a good flocculation and decoloration efficiency towards the waste printing and dyeing water. Some factors influencing the process such as amount of chitosan, deacetylation degree of chitosan, mixing time, setting time have been examined.展开更多
根据染料中间体吡啶-2-酮生产废水的特点,提出了利用“氧化、脱色和絮凝”三位一体的物化方法处理这种废水;探究了搅拌速度、絮凝反应时间、pH值、药剂用量、废水浓度和温度对COD去除率和脱色率的影响,得出了最佳工艺条件.研究结果表明...根据染料中间体吡啶-2-酮生产废水的特点,提出了利用“氧化、脱色和絮凝”三位一体的物化方法处理这种废水;探究了搅拌速度、絮凝反应时间、pH值、药剂用量、废水浓度和温度对COD去除率和脱色率的影响,得出了最佳工艺条件.研究结果表明,在常温下,两性聚丙烯酰胺NDPAM用量35 mg/L,氧化交联剂PDO用量0.55 mL/L,pH=5.7,搅拌速度80 r/m in,絮凝时间为15 m in和静止时间为30 m in的条件下,COD的去除率和脱色率均达到98%,处理后的废水达到了可生化的指标范围.并对处理成本和絮凝动力学机理进行了探讨.展开更多
文摘Deacetylated chitosan solution mixed with inorganic flocculant has a good flocculation and decoloration efficiency towards the waste printing and dyeing water. Some factors influencing the process such as amount of chitosan, deacetylation degree of chitosan, mixing time, setting time have been examined.
文摘根据染料中间体吡啶-2-酮生产废水的特点,提出了利用“氧化、脱色和絮凝”三位一体的物化方法处理这种废水;探究了搅拌速度、絮凝反应时间、pH值、药剂用量、废水浓度和温度对COD去除率和脱色率的影响,得出了最佳工艺条件.研究结果表明,在常温下,两性聚丙烯酰胺NDPAM用量35 mg/L,氧化交联剂PDO用量0.55 mL/L,pH=5.7,搅拌速度80 r/m in,絮凝时间为15 m in和静止时间为30 m in的条件下,COD的去除率和脱色率均达到98%,处理后的废水达到了可生化的指标范围.并对处理成本和絮凝动力学机理进行了探讨.