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Table 2 The characterization of sewage sludge and filtrate

From: Pretreatments for enhancing sewage sludge reduction and reuse in lipid production

Properties Unit Value
pH 7.30
Total solids (TS) g/L 9.40 ± 0.32
MLSS g/L 7.14 ± 0.69
MLVSS g/L 4.61 ± 0.22
TN % TS 2.84 ± 0.10
TP %TS 4.70 ± 0.25
TN in filtrate mg/L 40.50 ± 3.43
TP in filtrate mg/L 7.02 ± 0.30
SCOD in filtrate mg/L 32.64 ± 5.19
  1. Filtrate was obtained by filtrating sludge with filter paper with pore size 30–50 μm
  2. MLSS mixed liquor suspended solids, MLVSS mixed liquor volatile suspended solids, TN total nitrogen, TP total phosphorus, SCOD soluble chemical oxygen demand