摘要：Protozoa grazing of nitrifiers is important process in activated
sludge process that leads to decrease of mass of active bacteria. In classical
models this process is included in decay processes. Such approach makes
modelling of influence of protozoa grazing on nitrifiers impossible. In cases
when maximization of nitrifiers growth is important (such as nitrifiers
cultivation for bioaugmentation) this simplification becomes major
drawback. This paper presents extended version of ASM3 model that
includes protozoa grazing as well as results of calibration of protozoa
grazing process on experimental data. Additionally new approach for
analysis of decay rate is proposed. This approach includes calculation of new
parameters: substitute decay rate which is sum of ASM3 base decay rate and
excluded predation process.
其他摘要：Protozoa grazing of nitrifiers is important process in activated sludge process that leads to decrease of mass of active bacteria. In classical models this process is included in decay processes. Such approach makes modelling of influence of protozoa grazing on nitrifiers impossible. In cases when maximization of nitrifiers growth is important (such as nitrifiers cultivation for bioaugmentation) this simplification becomes major drawback. This paper presents extended version of ASM3 model that includes protozoa grazing as well as results of calibration of protozoa grazing process on experimental data. Additionally new approach for analysis of decay rate is proposed. This approach includes calculation of new parameters: substitute decay rate which is sum of ASM3 base decay rate and excluded predation process.
