Formation mechanism of high biofilm phosphorus storage capacity and its effect on phosphorus uptake-release and carbon source consumption

Xiaoya Wang; Jun Zhang; Lu Li; Ye Zhu; Yue Zhang; Min Ni; Yanyan Ding; Yong Huang; Yang Pan

doi:10.1016/j.biortech.2024.131363

Formation mechanism of high biofilm phosphorus storage capacity and its effect on phosphorus uptake-release and carbon source consumption

Bioresour Technol. 2024 Nov:412:131363. doi: 10.1016/j.biortech.2024.131363. Epub 2024 Aug 27.

Authors

Xiaoya Wang¹, Jun Zhang², Lu Li³, Ye Zhu¹, Yue Zhang⁴, Min Ni¹, Yanyan Ding¹, Yong Huang¹, Yang Pan⁵

Affiliations

¹ School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China.
² Suzhou Drainage Company Limited, Suzhou 215009, China.
³ School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China. Electronic address: [email protected].
⁴ School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
⁵ School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China. Electronic address: [email protected].

PMID: 39197659
DOI: 10.1016/j.biortech.2024.131363

Abstract

Phosphorus recovery from wastewater is an effective method to alleviate the shortage of phosphorus resources. The biofilm phosphorus recovery process can realize simultaneous removal and enrichment of phosphorus in wastewater. In this study, a sequencing batch biofilm reactor was constructed to study the rapid phosphorus release and slow phosphorus release stages in the phosphorus recovery cycle. The relationship between high biofilm phosphorus storage capacity (P_biofilm), phosphorus recovery solution concentration, phosphorus uptake-release behavior and carbon source consumption were explored. The increase in phosphorus recovery solution concentration promotes the elevation of P_biofilm, which, conversely promotes phosphorus release in the next recovery cycle. In addition, the distinct phosphorus uptake-release characteristics of extracellular polymeric substances and cells were illustrated. This study provides a theoretical foundation to elevate the phosphorus recovery efficiency and reduce carbon source consumption in biofilm phosphorus recovery process.

Keywords: Biofilm phosphorus storage capacity (P(biofilm)); Extracellular polymeric substances; Phosphorus recovery; Sequencing batch biofilm reactor.

MeSH terms

Biofilms*
Bioreactors*
Carbon* / metabolism
Phosphorus* / metabolism
Wastewater / chemistry

Substances

Phosphorus
Carbon
Wastewater