摘要
以萃取—反萃取体系处理萘系染料中间体 1-2 -4酸生产废水 ,通过静态实验和正交实验确定最佳萃取—反萃取工艺条件。 1-2 -4酸生产废水包括 1-2 -4酸母液和 1-2 -4酸氧体废水 ,两种废水的萃余液平均 CODcr<60 0 mg/ L,萃取效率分别达 95 %和92 % ,反萃取效率 10 0 % ,萃取剂可以循环使用 ,有机物浓缩倍数分别为 9～ 10倍和 5～ 6倍 ,该浓缩液可回用。并对 1-2 -4酸生产废水资源化进行了运行费用分析 ,结果表明 ,该工艺有良好的经济效益。
The extraction treatment of manufacturing wastewater of 1 2 4 acid with system of extraction and stripping were studied. Optimal parameters for the extraction and stripping process were obtained from static and orthogonal experiments. Manufacturing wastewater of 1 2 4 acid had two intermediates wastewater. They were wastewater of aminonaphtholsulphonic acid 1 2 4, and 1 Diazo 2 naphthol 4 sulfonic acid. The COD value of remaied wastewater after extraction decreased less than 600 mg/L, and the COD removal rate reached 95% and 92%. The stripping rate reached almost 100%, and the extractant could be used in cycle without quality changed. Condensed multiple of organism reached 9～10 times and 5~6 times, and condensed liquid could be returned to production section. Consequence of running cost analysis for the resource recovery of manufacturing wastewater of 1 2 4 acid indicated that this treatment process had not only retained profits but also good social and environmental benefits.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2002年第2期65-67,78,共4页
Environmental Pollution & Control
基金
国家"九五"科技攻关项目
