Nitrification performance and microbial ecology of nitrifying bacteria in a full-scale membrane bioreactor treating TFT-LCD wastewater

Liang Ming Whang, Yi Ju Wu, Ya Chin Lee, Hong Wei Chen, Toshikazu Fukushima, Ming Yu Chang, Sheng Shung Cheng, Shu Fu Hsu, Cheng Huey Chang, Wason Shen, Chung Kai Huang, Ryan Fu, Barkley Chang

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

This study investigated nitrification performance and nitrifying community in one full-scale membrane bioreactor (MBR) treating TFT-LCD wastewater. For the A/O MBR system treating monoethanolamine (MEA) and dimethyl sulfoxide (DMSO), no nitrification was observed, due presumably to high organic loading, high colloidal COD, low DO, and low hydraulic retention time (HRT) conditions. By including additional A/O or O/A tanks, the A/O/A/O MBR and the O/A/O MBR were able to perform successful nitrification. The real-time PCR results for quantification of nitrifying populations showed a high correlation to nitrification performance, and can be a good indicator of stable nitrification. Terminal restriction fragment length polymorphism (T-RFLP) results of functional gene, amoA, suggest that Nitrosomonas oligotropha-like AOB seemed to be important to a good nitrification in the MBR system. In the MBR system, Nitrobacter- and Nitrospira-like NOB were both abundant, but the low nitrite environment is likely to promote the growth of Nitrospira-like NOB.

Original languageEnglish
Pages (from-to)70-77
Number of pages8
JournalBioresource technology
Volume122
DOIs
Publication statusPublished - 2012 Oct

All Science Journal Classification (ASJC) codes

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

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