sewage sludge (#1516)

ID-number#1516
Materialsewage sludge
Classification ECN Phyllis classification ▸ sludge ▸ sewage ▸ sewage sludge
NTA 8003 classification ▸ [400] slib ▸ [410] zuiveringsslib RWZI
Submitter organisationECN (Netherlands)
Submission date1999-07-07
RemarksAll values are the average of the minimum and maximum values for sewage sludge from the Saar region in Germany; ash deformation temperature minimum values are shown. Max. values are: IST 1100, HT: 1210; FT: 1260 C
LiteratureK. R. G. Hein: Combined combustion of biomass/sewage sludge and coals; Clean Coal Technology Programme 1992-1994, Stuttgart, IVD, ISBN 3-928123-16-5 (1994).

Values

Property Unit Value Std dev Det lim Lab Date Method Remarks
ar dry daf

Fuel Properties

Proximate Analysis

Moisture content wt% 4.93
Ash content wt% 47.25 49.70
Volatile matter wt% 41.97 44.15 87.77
Fixed carbon wt% 5.85 6.15 12.23 Calculated

Ultimate Analysis

Carbon wt% 25.20 26.51 52.70 Average
Hydrogen wt% 3.90 4.10 8.15 Average
Nitrogen wt% 3.00 3.16 6.28 Average
Sulphur wt% 1.06 1.11 2.21 Average
Oxygen wt% 14.69 15.45 30.72 Average
Total (with halides) wt% 100.08 100.09 100.17 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 9.90 10.54 20.96
Gross calorific value (HHV) MJ/kg 10.88 11.44 22.74
HHVMilne MJ/kg 11.33 11.92 23.70 Calculated

Chemical Analyses

Halides

Chlorine (Cl) mg/kg 522.9 550.0 1 093.4 Average

Major elements

Phosphorus (P) mg/kg (dry) 24 450.0 Average

Minor elements

Arsenic (As) mg/kg (dry) 10.2 Average
Cadmium (Cd) mg/kg (dry) 5.5 Average
Cobalt (Co) mg/kg (dry) 16.5 Average
Chromium (Cr) mg/kg (dry) 171.0 Average
Copper (Cu) mg/kg (dry) 252.0 Average
Nickel (Ni) mg/kg (dry) 35.5 Average
Lead (Pb) mg/kg (dry) 135.5 Average
Zinc (Zn) mg/kg (dry) 1 810.0 Average
Mercury (Hg) mg/kg (dry) 1.8 Average

Physical Properties

Ash melting behaviour

American standard method, measured in oxidizing conditions

IDT (initial deformation temperature) °C 1 080
HT (hemispherical temperature) °C 1 190
FT (fluid temperature) °C 1 240

Ash Properties

Ash composition

SO3 wt% (ash) 0.26
P2O5 wt% (ash) 5.60
SiO2 wt% (ash) 20.05
Fe2O3 wt% (ash) 6.35
Al2O3 wt% (ash) 6.70
CaO wt% (ash) 4.70
MgO wt% (ash) 1.10
Na2O wt% (ash) 0.36
K2O wt% (ash) 0.89
TiO2 wt% (ash) 0.35