Simultaneous Removal of Nitrate and Phosphate in a Pyrrhotite and Sulfur-Circulating Packed Bed Reactor

نویسندگان

چکیده

A pyrrhotite and sulfur-circulating packed bed reactor (PS-CPBR) was constructed to study the removal process mechanism of NO3−-N PO43−-P with different electron donors. The results showed that performance mixed donors (pyrrhotite sulfur) superior single donor (pyrrhotite). optimum conditions in PS-CPBR were a hydraulic retention time (HRT) 12 h C/N 0, average efficiency 100% 86.39%. sulfur able promote dissolution formation polysulfide increase effectiveness donors, promoting NO3−-N, while removed form FePO4 precipitation. Microbial functional gene analyses demonstrated influence abundance microbial communities denitrification genes. Meanwhile, protein content biofilms reduce resistance transfer between microorganisms electrons.

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ژورنال

عنوان ژورنال: Water

سال: 2023

ISSN: ['2073-4441']

DOI: https://doi.org/10.3390/w15122158