ISSN 0235-7224
ISSN 2029-0586 (online)
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2009 m. Nr. 3-4
Influence of substrate on biological removal of phosphorus
Regimantas DAUKNYS, Giedrė VABOLIENĖ, Marina VALENTUKEVIČIENĖ, Mindaugas RIMEIKA
Nitrogen and phosphorus removal from wastewater is a way to avoid eutrophication of water bodies. The most often used method for phosphorus removal from wastewater is biological treatment. Under anaerobic conditions, phosphorus-accumulating organisms can accumulate more phosphate than is required for their metabolism processes and cell synthesis. The composition of wastewater may have an important influence on phosphorus biological removal from wastewater. In this study, the composition of wastewater in respect of the readily biodegradable chemical oxygen demand (rbCOD) was investigated. The rbCOD characterises the amount of volatile fatty acids (VFAs) and a readily biodegradable substrate in wastewater, which could be rapidly fermented into VFAs and other fermentation products.
Keywords: wastewater treatment, readily biodegradable COD, activated sludge, biological phosphorus removal
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