Sep 15, 2019 The refractory nature of residual COD in bio-treated coking wastewater (BTCW) creates barriers for its further treatment and reclamation.
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Hach's COD Digestion Vials (High Range) are used for determination of high range Chemical Oxygen Demand (COD) by the Reactor Digestion method.
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Digestion is required. 1 Ranges 3 to 150 mg/L COD and 20 to 1500 mg/L COD are USEPA approved for wastewater analyses (Standard Method 5220 D), Federal.
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Water resources' use efficiency is an important issue under China's rapid economic growth. The results of the Wilcoxon test present that PCWC, GDP, COD, ...
A COD test typically involves digestion of a water sample in a sealed vial with potassium dichromate and sulfuric acid at 150oC for 2 hours.
