Next Article in Journal
Describing and Visualizing a Water–Energy–Food Nexus System
Previous Article in Journal
Soil Moisture, Grass Production and Mesquite Resprout Architecture Following Mesquite Above-Ground Mortality
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Water 2018, 10(9), 1244; https://doi.org/10.3390/w10091244

Effect of Aeration Rates and Filter Media Heights on the Performance of Pollutant Removal in an Up-Flow Biological Aerated Filter

1
State Key Laboratory of Eco-hydraulic in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
2
College of Computing, Georgia Institute of Technology, Atlanta, GA 30301, USA
*
Author to whom correspondence should be addressed.
Received: 24 August 2018 / Revised: 6 September 2018 / Accepted: 7 September 2018 / Published: 14 September 2018
(This article belongs to the Section Water and Wastewater Treatment)
Full-Text   |   PDF [2304 KB, uploaded 14 September 2018]   |  

Abstract

The biological aerated filter (BAF) is an effective biological treatment technology which removes the pollutants in municipal wastewater secondary treatment. However, we still know little about the interaction between the pollutants removal and microbes within the BAF. In this study, we used an up-flow BAF (UBAF) reactor to investigate the relationships between the pollutants removal and microbial community structure at different aeration rates and filter media heights. The microbial community of biofilm was analyzed by Illumina pyrosequencing. Our results showed that the UBAF achieved a better removal efficiency of chemical oxygen demand (COD), NH4+-N, NO3-N, and total phosphorus (TP) at an aeration rate of 65 L/h. In addition, the COD and NH4+-N removal mainly occurred at 0–25 cm height of filter media. The microbial community structure in the UBAF demonstrated that the relative abundance of the Planctomycetes and Comamonadaceae at 10 cm height of filter media were 11% and 48.1%, respectively, proportions significantly higher than those under others treatments. Finally, the changes in relative abundance of Proteobacteria, Planctomycetes, and Nitrospirae likely explained the mechanism of nitrogen and phosphorus removal. Our results showed that suitable conditions could enhance the microbial community structure to achieve a high pollutants removal in the UBAF. View Full-Text
Keywords: aeration rates; filter media; microbial community; pollutants removal; up-flow biological aerated filter aeration rates; filter media; microbial community; pollutants removal; up-flow biological aerated filter
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ren, J.; Cheng, W.; Wan, T.; Wang, M.; Zhang, C. Effect of Aeration Rates and Filter Media Heights on the Performance of Pollutant Removal in an Up-Flow Biological Aerated Filter. Water 2018, 10, 1244.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top