Effective start-up biofiltration method for Fe, Mn, and ammonia removal and bacterial community analysis

Yan'an Cai; Dong Li; Yuwen Liang; Yahong Luo; Huiping Zeng; Jie Zhang

doi:10.1016/j.biortech.2014.11.025

Effective start-up biofiltration method for Fe, Mn, and ammonia removal and bacterial community analysis

Bioresour Technol. 2015 Jan:176:149-55. doi: 10.1016/j.biortech.2014.11.025. Epub 2014 Nov 15.

Authors

Yan'an Cai¹, Dong Li², Yuwen Liang¹, Yahong Luo¹, Huiping Zeng¹, Jie Zhang³

Affiliations

¹ Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
² Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China. Electronic address: lidong2006@bjut.edu.cn.
³ Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.

PMID: 25460996
DOI: 10.1016/j.biortech.2014.11.025

Abstract

Three identical lab-scale biofilters were employed to optimize the start-up process for simultaneous removal of iron (Fe), manganese (Mn), and ammonia from potable water supplies. Nitrifying sludge and backwashing sludge containing Mn-oxidizing bacteria (MnOB) were used as the inocula. The start-up strategies consisted of simultaneous and separate inoculation of the two kinds of sludge. The influent Fe was removed immediately when the biofilters began to operate. The effects of nitrification for ammonia removal showed no significant difference between these biofilters. However, the beginning of Mn removal with separate inoculation was faster than that of simultaneous inoculation. The Mn removal can be described by using first order reaction; and the k (rate constant, min(-1)) values were 0.147±0.007 (mean±standard deviation) and 0.153±0.006. Besides the commonly reported MnOB genus Crenothrix, MnOB genera were also found to be related to the genera rarely reported in the potable water treatment systems.

Keywords: Biofilter; Manganese-oxidizing bacteria; Nitrification; Start-up method.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Ammonia / metabolism
Bacteria / metabolism*
Iron / metabolism
Kinetics
Manganese / metabolism
Oxidation-Reduction
Sewage / microbiology*
Ultrafiltration / methods*
Water Pollutants, Chemical / metabolism*
Water Purification / methods*
Water Supply / analysis*

Substances

Sewage
Water Pollutants, Chemical
Manganese
Ammonia
Iron