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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