城市污水处理厂对CODCr测定的改进
收稿日期: 2004-07-19
修回日期: 2004-07-19
网络出版日期: 2010-10-01
Improvement in the determination of CODCr in municipal wastewater treatment plants
Received date: 2004-07-19
Revised date: 2004-07-19
Online published: 2010-10-01
匡云霞 . 城市污水处理厂对CODCr测定的改进[J]. 工业水处理, 2005 , 25(1) : 52 -53 . DOI: 10.11894/1005-829x.2005.25(1).51
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.
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