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Table 2 Calibration coefficients, rates and parameters in the facultative pond model

From: Developing a system dynamics model for prediction of phosphorus in facultative stabilization ponds

Parameter

Symbol

Value

Unit

Volume

v

80,000

m3

Single degree growth rate of algae

kg

0.35

d−1

Hydrolysis rate

Kh

d−1

Hydrolysis rate in 20°

Kh, 20

0.97

d−1

Kh temperature correction factor

Kh, Teta

1.06

Decline caused by respiration

Krc

0.072

d−1

Decline caused by herbivorous zooplanktons in 20°

Krh, 20

1.8

d−1

Krh temperature correction factor

Krh, Teta

1.08

Ratio of phosphorus to chlorophyll

Apa

0.15

mgPmgChLa−1

Ratio of phosphorus to carbon

Apc

0.8–0.22

Decline caused by the combined effect of respiration and excretion

Kra

0.05–0.9

d−1