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9.3.4 Chemical Oxygen Demand Removal The average COD removal efficiency ( Table 9.7 ) was low for all ponds, which was clearly noticed from the inflow values corresponding to the high outflow values ( Tables 9.5 and 9.5 ).
• Oxygen Demand – Biochemical oxygen demand – Chemical oxygen demand • Indicator organisms – Fecal coliform – Escherichia coli (E Coli 0157:H7 is the really bad boy) • Solids content –
0.5 35 1 Colour - Not objectionable Temperature 0C 40 pH - 5 – 9 Chemical Oxygen Demand (COD) mg/l 120 Biochemical Oxygen Demand (BOD5) mg/l 40 Chloride mg/l 1500 Sulphate mg/l 1500 Sulphide mg/l 0.002 Ammoniacal Nitrogen mg/l 1
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Chemical Oxygen Demand (COD) is a quick, inexpensive means to determine organics in water. COD samples are prepared with a closed-reflux digestion followed by analysis. Determinations can be made titrimetrically by Hach®
The determination of chemical oxygen demand in waters and effluents 1 Introduction Methods for the determination of chemical oxygen demand have been previously published(1, 2). These methods have been revised and other
16mm Hach vials for vials for Chemical Oxygen Demand ( COD ) determination. Results displayed as O2 mg/l. Please note a reactor is required for sample digestion. The tube tests are in high-quality glass and the reagent tubes are
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2012/03/06 · What is biochemical oxygen demand and why is it important? Biochemical oxygen demand, or BOD, measures the amount of oxygen consumed by microorganisms in decomposing organic matter in stream water. BOD also measures the chemical oxidation of inorganic matter (i.e., the extraction of oxygen from water via chemical reaction).
