Correlations of Substrate Microorganisms and Enzyme Activities with Wastewater Purification Effects in Subsurface Infiltration System

Abstract:

The number of substrate microorganisms and enzyme activities of a lab-scale subsurface infiltration system (SIS) were monitored by plate counts, MPN and colorimetric analysis. The removal rates of BOD, COD, TP, TN and ammonia-N were measured. The results showed there were significantly positive correlation (P<0.05) between numbers of bacteria, fungi in the substrate and removal rates of COD and BOD. The correlation between number of nitrifying bacteria and removal rates of ammonia-N and correlation between number of denitrifying bacteria and removal rates of TN were significant. Meanwhile, a significant correlation between phosphatase activities and removal rates of TP (r=0.9885, P<0.05) can be also found. There was significantly positive correlation between urease activities and removal rates of TN (r=0.9698, P<0.05). These conclusions give reference to future research on utilizing substrate microorganisms and enzyme activities as an evaluating wastewater purification effects in SIS.

• Periodical: Advanced Materials Research (Volumes 1010-1012)
• Pages: 20-23
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.20
• Online since: August 2014
• Authors: Jing Pan*, Si Yu Song, Yang Zhang
• Keywords: Correlation, Substrate Microorganisms, Subsurface Infiltration System

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