Title

Induction of phosphorus removal in an enhanced biological phosphorus removal bacterial population

Keywords

Carboxyl group; Inorganic phosphate (P ) 1; Polyphosphate (poly-P) bacteria; Prefermentation; Volatile fatty acid (VFA)

Abstract

Volatile fatty acids (VFAs) resulting from prefermentation of influent glucose were used to cultivate a bacterial population capable of enhanced biological phosphorus removal (EBPR) in two identical anaerobic/aerobic sequencing batch reactors (SBRs). An identical SBR receiving starch, which did not readily preferment, established only marginal EBPR. The Starch SBR population did not respond in batch tests to any of the substrates studied. In batch tests for the glucose SBR populations the two to five carbon VFAs, except propionic acid, induced greater inorganic phosphate (Pi) removal. Succinic acid also improved removals. Branched VFAs were superior to their linear isomers. Isovaleric acid improved Pi removal the most consistently, and at lower molar concentrations than any other VFA. The C2 and C5 alcohols did not have a significant effect on Pi removal, and neither did formate or methanol. The C3 and C4 alcohols did result in relatively small but consistent improvements in removals. Glucose, as well as amino acid rich synthetic wastewater, were both extremely detrimental to Pi removal. Fructose and starch did not have the same detrimental effect as glucose.

Publication Date

1-1-1997

Publication Title

Water Research

Volume

31

Issue

11

Number of Pages

2869-2877

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0043-1354(97)00140-1

Socpus ID

0031282251 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0031282251

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