DAILY SLUDGE PRODUCTION OF WASTEWATER TREATMENT PLANT
Terms used & their notation
- Q - Wastewater flow rate (m3/d) (Influent flowrate)
- So - Influent Soluble Substrate Concentration (BOD or bsCOD g/m3)
- S - Effluent Soluble Substrate Concentration
- Xo,i - nbVSS concentration in effluent (g/m3 or mg/l)
- iTSS - inert inorganic Total Suspended Solids (g/m3)
- XT - Total MLVSS concentration (g/m3 or mg/l)
- SRT - Sedimentation Retention Time (d)
- VSSo - Influent Volatile Suspended Solids
- Px,T, TSS - Daily Sludge production kg TSS/d
Px,T, VSS - Daily Sludge production kg VSS/d - Kinetic coefficients
- k - maximum rate of soluble substrate utilization (g COD/g . d)
- y - biomass yield (g VSS/g COD)
- kd - endogenous decay coefficient (g VSS/g VSS . d)
- ks - half velocity constant (g COD/m3)
- fd - fraction of cell mass that remains as cell debries (g VSS/g VSS)
CASE STUDY
- Q = 1000 m3/d
- So = 192 BOD or bsCOD g/m3
- Xo, i = 30 g/m3
- iTSS = 10 g.m3
- XT = 2500 g/m3
- SRT = 6 d
- k = 12.5 g COD/g . d
- y = 0.4 g VSS/g COD
- kd = 0.1 g VSS/G VSS . d
- ks = 1 g COD/m3
- fd = 0.15 g VSS/g VSS
DAILY SLUDGE PRODUCTION
Px, T, VSS = 82.17 kg VSS/d
- Q = 1000 m3/d
- So = 192 BOD or bsCOD g/m3
- Xo, i = 30 g/m3
- iTSS = 10 g.m3
- XT = 2500 g/m3
- SRT = 6 d
- k = 12.5 g COD/g . d
- y = 0.4 g VSS/g COD
- kd = 0.1 g VSS/G VSS . d
- ks = 1 g COD/m3
- fd = 0.15 g VSS/g VSS
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