Determination of Chemical Oxygen Demand for Saline Wastewater

Author

Ma, Xiangjuan ; Gao, Yang

Author_Institution

Sch. of Environ. Sci. & Eng., Zhejiang Gongshang Univ., Hangzhou, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

The interference of the chloride ion (Cl^-) on the standard method for chemical oxygen demand (COD) determination proposed by American Publican Health Association (APHA) cannot be ignored, especially for samples with high salinity. Increasing the ratio of HgSO₄:Cl- and adding some masking agents such as AgNO₃, Cr³⁺, Al³⁺ are all good modifications of the standard method to eliminate the Cl^- interference. Correction method can also be used to calculate the real COD value by analyzing the interfering COD value and the measured COD value. In addition, new techniques such as chemiluminescence (CL) system, chemiluminescence combined with flow-injection method, and new assisted digestion methods can tolerate Cl^- at a certain extent and save time simultaneously.

Keywords

chemiluminescence; wastewater; water pollution measurement; American Publican Health Association; assisted digestion methods; chemical oxygen demand; chemiluminescence; chloride ion; flow-injection method; masking agents; saline wastewater; salinity; Board of Directors; Calibration; Chemical engineering; Chemical industry; Environmental economics; Fuel economy; Oxidation; Oxygen; Wastewater treatment; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5517026

Filename

5517026