文档介绍：JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH
Part A—Toxic/Hazardous Substances & Environmental Engineering
Vol. 39, No. 9, pp. 2421–2435, 2004
Ammonia and pH Inhibition in Anaerobic Treatment of
Wastewaters, Part II: Model Development
Nursen O¨z Eldem,1 O¨mer Akgiray,2,* Izzet Ozturk,1
Elif Soyer1 and Bar|s Call|2
1Faculty of Civil Engineering, Department of Environmental Engineering,
Istanbul Technical University, Maslak, Istanbul, Turkey
2Faculty of Engineering, Department of Environmental Engineering,
Marmara University, Goztepe, Istanbul, Turkey
ABSTRACT
A new model to account for the influences of pH and ammonia on methane
production in the anaerobic treatment of wastewaters is presented. The model is
developed and evaluated by using two different sets of experimental data obtained
using seeds from two different full-scale industrial anaerobic reactors. One of the
seeds was obtained from an expanded granular sludge-blanket (EGSB) reactor
treating a corn processing waste. The other seed was obtained from an upflow
anaerobic sludge-blanket reactor (UASB) treating waste from a potato chips
production plant. Model development is based on the data collected at four
different pH values (, , , ) and with six different TAN (Total
Ammonia Nitrogen) values (262 mg/L (control), 1000, 1500, 2000, 2500, 3000).
The proposed model has a considerably more convenient pared to other
models that have been used in the literature for similar purposes. For example,
the model facilitates the calculation of quantities such as the optimal pH as a
function of TAN concentration, or the TAN concentration leading to 50%
inhibition (TAN50) as a function of pH. High levels of correlations were achieved
*Correspondence: O¨mer Akgiray, Faculty of Engineering, Department of Environmental
Engineering, Marmara University, Goztepe 81040, Istanbul, Turkey; E-mail: akgiray@
.
2421
DOI: -200026303 1093-