All property packages
Sour water (NH₃ + H₂S) property package
Bounded weak-electrolyte model for refinery sour water — ammonia and hydrogen sulfide over water, with the mutual suppression that defines the system: ammonia raises pH and holds H₂S down as bisulfide, H₂S lowers pH and holds ammonia down as ammonium, and heat reverses both so a stripper drives them off together. Equilibrium speciation with Davies activity; NH₃/H₂S only — a CO₂-bearing sour water is out of scope.