Journal
CHEMOSPHERE
Volume 144, Issue -, Pages 689-696Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2015.09.036
Keywords
Food waste; Anaerobic fermentation; Carbon source; Denitrification rate; Denitrification potential
Categories
Funding
- Natural Science Foundation of China [50838005]
- Program for Innovative Research Teamin Shanxi Province [2013KCT-13]
Ask authors/readers for more resources
Food wastes were used for anaerobic fermentation to prepare carbon sources for enhancing nitrogen removal in wastewater treatment. Under anaerobic conditions without pH adjustment, the fermentation liquid from food wastes (FLFW) with a high organic acid content was produced at room temperature (25 degrees C) and initial solid concentration of 13%. Using FLFW as the sole carbon source of artificial wastewater for biological treatment by sequence batch operation, maximized denitrification (with a denitrification rate of V-DN = 12.89 mg/gVSS h and a denitrification potential of P-DN = 0.174 gN/gCOD) could be achieved at a COD/TN ratio of 6. The readily biodegradable fraction in the FLFW was evaluated as 58.35%. By comparing FLFW with glucose and sodium acetate, two commonly used chemical carbon sources, FLFW showed a denitrification result similar to sodium acetate but much better than glucose in terms of total nitrogen removal, V-DN, P-DN, organic matter consumption rate (V-COD) and heterotrophy anoxic yield coefficient (Y-H). (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available