Tropical and temperate wastewater treatment plants assemble different and diverse microbiomes

Autor: Yang Song, Pattanop Kanokratana, Cheng-Ying Jiang, Shuang-Jiang Liu, Sarunyou Wongwilaiwalin, Aijie Wang, Verawat Champreda, Wuttichai Mhuantong, Dongru Qiu, Shuangyuan Liu, Nipon Pisutpaisal
Rok vydání: 2020
Předmět:
Zdroj: Applied microbiology and biotechnology. 105(2)
ISSN: 1432-0614
Popis: The diversity and assembly of activated sludge microbiomes play a key role in the performances of municipal wastewater treatment plants (WWTPs), which are the most widely applied biotechnological process systems. In this study, we investigated the microbiomes of municipal WWTPs in Bangkok, Wuhan, and Beijing that respectively represent tropical, subtropical, and temperate climate regions, and also explored how microbiomes assembled in these municipal WWTPs. Our results showed that the microbiomes from these municipal WWTPs were significantly different. The assembly of microbiomes in municipal WWTPs followed deterministic and stochastic processes governed by geographical location, temperature, and nutrients. We found that both taxonomic and phylogenetic α-diversities of tropical Bangkok municipal WWTPs were the highest and were rich in yet-to-be-identified microbial taxa. Nitrospirae and β-Proteobacteria were more abundant in tropical municipal WWTPs, but did not result in better removal efficiencies of ammonium and total nitrogen. Overall, these results suggest that tropical and temperate municipal WWTPs harbored diverse and unique microbial resources, and the municipal WWTP microbiomes were assembled with different processes. Implications of these findings for designing and running tropical municipal WWTPs were discussed. KEY POINTS: • Six WWTPs of tropical Thailand and subtropical and temperate China were investigated. • Tropical Bangkok WWTPs had more diverse and yet-to-be-identified microbial taxa. • Microbiome assembly processes were associated with geographical location.
Databáze: OpenAIRE
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