Research Article
Combined Application of Coagulation/Flocculation/Sedimentation and Membrane Separation for the Treatment of Laundry Wastewater
Table 3
Mean values (±standard deviation) of the parameters analyzed when characterizing the laundry wastewater.
| | Parameter | Batch 1 | Batch 2 | Batch 3 |
| | TOC (mg·C·L−1) | 54.5 ± 0.8 | 80.4 ± 1.2 | 86.0 ± 0.1 | | Conductivity (μS·cm−1) | 278 ± 13 | 444 ± 1 | 647 ± 8 | | Color (mgPt-Co·L−1) | 394 ± 11 | 365 ± 4 | 425 ± 0 | | BOD (mg·O2·L−1) | 58 ± 0 | 87 ± 0 | 67 ± 0 | | COD (mg·O2·L−1) | 587 ± 4 | 383 ± 15 | 245 ± 8 | | Total nitrogen (mg·L−1) | 2.9 ± 0 | 7.1 ± 0 | 4.8 ± 0 | | pH | 10.0 ± 0.1 | 10.5 ± 0 | 10.9 ± 0 | | TDS (mg·L−1) | 359 ± 4 | 471 ± 2 | 473 ± 4 | | TS (mg·L−1) | 456 ± 6 | 530 ± 3 | 532 ± 7 | | Surfactants (mg·L−1 MBAS) | 11.7 ± 0.1 | 19.6 ± 0.1 | 15.9 ± 0 | | Temperature (°C) | 23.4 ± 0.2 | 25.4 ± 0.1 | 25.1 ± 0.1 | | Turbidity (NTU) | 61 ± 2 | 52 ± 2 | 64 ± 1 |
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MBAS: methylene blue active substances.
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