Table 1 Major operating parameters of WWTPs in this study. Asterisk indicates significant differences between KRWT and VNWT.
From: The capacity of wastewater treatment plants drives bacterial community structure and its assembly
WWTPs | KR1 | KR2 | KR3 | KR4 | VN1 | VN2 | VN3 | VN4 | p-value |
|---|---|---|---|---|---|---|---|---|---|
Wastewater source | Domestic | Domestic | Domestic | Domestic | Domestic | Domestic | Domestic | Industry | — |
Treatment process | MLE/A2O | MLE | MLE/A2O | MLE | MLE | MLE | A2O | SBR | — |
avgSRT (days) | 10 | 9 | 10 | 9 | 16 | 16 | 16 | 18 | 0.0247* |
avgHRT (hours) | 10 | 7 | 7 | 6 | 9 | 9 | 8 | 6 | 0.6704 |
avgFlow rate (m3/day) | 850,000 | 1,500,000 | 1,700,000 | 900,000 | 1,000 | 1,300 | 1,000 | 18,000 | 0.0294* |
avgMLSS (mg/L) | 2,700 | 2,800 | 2,500 | 2,800 | 3,200 | 2,700 | 2,800 | 3,000 | 0.1379 |
pH | 6.9 | 6.9 | 7.0 | 6.9 | 7.1 | 6.9 | 6.8 | 7.0 | 0.8770 |
CODrem (%) | 95.6 | 92.9 | 94.8 | 92.1 | 93.9 | 92.7 | 92.5 | 92.4 | 0.3123 |
BODrem (%) | 92.6 | 91.7 | 94.3 | 92.9 | 92.5 | 93.4 | 91.8 | 93.6 | 0.9439 |
TNrem (%) | 91.8 | 96.8 | 90.4 | 93.9 | 97.7 | 92.7 | 95.5 | 96.3 | 0.2312 |
TPrem (%) | 97.1 | 97.8 | 96.5 | 92.3 | 99.8 | 99.0 | 92.9 | 97.9 | 0.4851 |
