Biokinetic Constants: nitrifying_ammonia
Biokinetic constants for biological wastewater treatment design — Monod kinetics parameters (mu_max, Ks, Y, kd, fd, theta) by organism/substrate type
| organism substrate | parameter id | notes | parameter name | temperature basis degC | unit | value max | value min | value typical |
|---|---|---|---|---|---|---|---|---|
| nitrifying_ammonia | kd | ASM1 original b_A=0.05 1/d; updated studies suggest 0.10-0.15 for full-scale plants. Classical kd range 0.04-0.15. | Endogenous decay coefficient | 20 | 1/d | 0.15 | 0.04 | 0.08 |
| nitrifying_ammonia | ks | Very low Ks reflects high substrate affinity. ASM1 K_NH=1.0 mg/L. Some studies report as low as 0.1 mg/L for enriched cultures. | Half-saturation constant (NH3-N) | 20 | mg NH3-N/L | 1.5 | 0.5 | 1 |
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