Effect of organic matter strength on anammox for modified greenhouse turtle breeding wastewater treatment

Chongjun Chen, Xiaoxiao Huang, Chenxiao Lei, Tian C. Zhang, Weixiang Wu

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Anaerobic ammonium-N removal from modified greenhouse turtle breeding wastewater with different chemical oxygen demand (COD) strengths (194.0-577.8mgL-1) at relatively fixed C/N ratios (~2) was investigated using a lab-scale up-flow anaerobic sludge blanket (UASB) anammox reactor. During the entire experiment, the total nitrogen (TN) removal efficiency was about 85% or higher, while the average COD removal efficiency was around 56.5±7.9%. Based on the nitrogen and carbon balance, the nitrogen removal contribution was 79.6±4.2% for anammox, 12.7±3.0% for denitrification+denitritation and 7.7±4.9% for other mechanisms. Denaturing gradient gel electrophoresis (DGGE) analyses revealed that Planctomycete, Proteobacteria and Chloroflexi bacteria were coexisted in the reactor. Anammox was always dominant when the reactor was fed with different COD concentrations, which indicated the stability of the anammox process with the coexistence of the denitrification process in treating greenhouse turtle breeding wastewater.

Original languageEnglish (US)
Pages (from-to)172-179
Number of pages8
JournalBioresource Technology
Volume148
DOIs
Publication statusPublished - Nov 2013

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Keywords

  • Anammox
  • Greenhouse turtle breeding wastewater
  • Nitrogen removal
  • PCR-DGGE

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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