Suspended Carrier Used in Municipal Wastewater Treatment

Abstract:

In this study, suspended carrier bed process was applied to treat the effluent from the chemical-biological flocculation plant. The bio-startup characteristics and the mechanisms of biofilm maturation were investigated. Results showed that the NH₃-N removal efficiency was higher than 80% after a 10d run, and the NH₃-N concentration of effluent was lower than 5.0mg/L, which satisfies the needs of The Pollutants Discharge Standard for Municipal Wastewater Treatment Plants (Class I-A). In other words, the suspended carrier used here did a good job. The bed finished its bio-startup process with stable nitrification efficiency. The biofilm formed on the carriers wing plates, which was helpful for its adhesion and ageing biofilm to fall off. It was found through electron microscope observation and PCR-DGGE (Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis) that the biofilm which formed on the surface of the carrier contained plenty of microbes. The stability of the microbial system was efficient in stabilizing nitrification.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 143-150
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.143
• Online since: September 2013
• Authors: Tian Yin Huang, Rong Wang, Wei Wu, Feng Liu
• Keywords: Biofiller, Biofilm Culturing, Bio-Startup, Suspended Carrier Bed Process

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