American Society of Civil Engineers


Simulation of Ammonia Stripping from Wastewater


by Joseph F. Roesler, M.ASCE, (Sanitary Engr., Treatment Optimization Res. Program, Envir. Protection Agency, WQO, Cincinnati, OH), Robert Smith, (Chf., Treatment Optimization Res. Program, Envir. Protection Agency, WQO, Cincinnati, OH), and Richard G. Eilers, (Mathematician Statistician, Treatment Operation Res. Program, Envir. Protection Agency, WQO, Cincinnati, OH)

Journal of the Sanitary Engineering Division
, Vol. 97, No. 3, May/June 1971, pp. 269-286

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Document type: Journal Paper
Abstract: A computer program that can be used for the design and simulation of ammonia stripping and film packed cooling towers is described. The ammonia stripping portion of the program is embedded in the cooling tower calculation in order that the variation of Henry’s law constant with water temperature can be taken into account. Both crosscurrent and countercurrent tower configurations are calculated and compared. Regression equations relating the height of a transfer unit and gas and liquid flow rates were developed from pilot and full scale plant data. Detailed capital and operating cost data were taken from the literature. The computed results indicate that for a crossflow tower an optimum gas to liquid ratio is about 1.75, and for counterflow the optimum is at about 4. Relations between the height of the tower, percent removal, cost and influent flow are also examined.


ASCE Subject Headings:
Ammonia
Computers
Cooling towers
Costs
Nitrogen
Reclamation
Sanitary engineering
Sewage
Stripping
Waste treatment
Water temperature