目录前言····························································1第一章 实验部分 ···············································2§1 水样和方法 ··············································21.1 水样 ····················································21.2 试剂和检测方法·············································21.3 实验工艺流程 ·············································2§2 水中铬的测定 ··············································22.1 六价铬的测定 ·············································22.2 总铬的测定 ···············································4§3 化学还原法处理含铬废水 ····································43.1 七水硫酸亚铁处理含铬废水 ·································43.2 亚硫酸钠处理含铬废水 ·····································53.3 偏重亚硫酸钠处理含铬废水 ··································63.4 比较并找出最佳还原剂 ·····································73.5 确定最佳还原剂的最佳反应条件 ·····························8第二章 实验结果及讨论 ·······································9第三章 结论 ·················································16第四章 谢辞 ················································ 17参考文献 ··················...
