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Frontiers of Environmental Science & Engineering >> 2018, Volume 12, Issue 4 doi: 10.1007/s11783-018-1043-x
Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification in wastewater treatment: Comparison of sludge types
Abstract
CEPS sludge was compared with conventional primary and secondary sludge for the VFAs yield. Fe-based CEPS sludge exhibited the highest efficiency of organic recovery. Fermented CEPS sludge liquor provided a sufficient carbon source for denitrification. 99% of nitrate removal was achieved based on the Fe-CEPS and sludge fermentation.
Keywords
Sewage sludge ; Chemically enhanced primary sedimentation (CEPS) ; Acidogenic fermentation ; Organic carbon recovery ; Nitrogen removal
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