摘要
介绍了污水处理厂化验室用重铬酸钾法同时测定污水处理前和处理后的CODCr浓度时,重铬酸钾溶液的浓度改为0.0500mol/L,硫酸亚铁铵溶液的浓度改为0.02mol/L,不但不会影响测定结果,还能有效地降低化验成本,节约工作时间,同时减少化验室废水对环境造成的二次污染。
It is introduced that when the CODCr concentrations both before and after the treatment are determined by using potassium dichromate method in the wastewater treatment plant laboratory, the concentration of potassium dichromate solution is adjusted to 0.050 0 mol/L and the concentration of ammonium irons(Ⅱ) sulfate hexahydrate solution to 0.02 mol/L. This will not influence the determination result, but can reduce the essay cost, save working hours and reduce the secondary environmental pollution caused by the wastewater from the laboratory.
出处
《工业水处理》
CAS
CSCD
北大核心
2005年第1期52-53,共2页
Industrial Water Treatment
关键词
污水处理厂
化学耗氧量
重铬酸钾
硫酸亚铁铵
wastewater treatment plant
chemical oxygen demand
potassium dichromate
ammonium irons(Ⅱ) sulfate hexahydrate
