Ambient temperature SNAD process treating anaerobic digester liquor of swine wastewater

Achlesh Daverey, Nien Tzu Hung, Kasturi Dutta, Jih-Gaw Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

In present study, effluent from anaerobic digestion of swine wastewater was treated by the simultaneous partial nitrification, anaerobic ammonium oxidation and denitrification (SNAD) process using a lab scale 5. L sequencing batch reactor (SBR) under ambient temperature. The fluctuation of anaerobic digester liquor quality (COD, 387 ± 145. mg/L; TKN, 662 ± 190 mg/L; NH4+-N, 519 ± 134 mg/L) and temperature created difficulties to develop a stable SNAD process in the SBR (days 1-285). Fed batch feeding strategy was adopted to have a stable condition in the reactor and overcome the negative effects of organic nitrogen. The average total nitrogen, NH4+-N and COD removal efficiencies in the SBR under steady state conditions (days 485-523) were 80%, 96% and 76%, respectively. The results showed that presence of organic nitrogen, mode of feeding and reactor temperature affects the SNAD process.

Original languageEnglish
Pages (from-to)191-198
Number of pages8
JournalBioresource Technology
Volume141
DOIs
StatePublished - 1 Jan 2013

Keywords

  • Anammox
  • Fed batch
  • Nitrogen removal
  • Organic nitrogen
  • Swine wastewater

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