The variations of major parameters such as pH, alkalinity, and volatile fatty acids, strongly indicated that acidogenesis occurred quickly in the first 15 cm. As the flow rate increased, acidogenesis occurred deeper in the column and its recovery became slower. The oxidation reduction potential (ORP) dropped to as low as −290 mV in the refuse column, indicating the anaerobic conditions of the system.
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Kuo-Shuh Fan; Treatability of High Strength Brewery Wastewater with Stabilized Refuse. Water Sci Technol 1 September 1990; 22 (9): 25–32. doi: https://doi.org/10.2166/wst.1990.0063
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