Carbon Credits (Carbon Farming Initiative—Domestic, Commercial and Industrial Wastewater) Methodology Determination 2015
22Fraction of chemical oxygen demand in influent that would be in sludge
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22 Fraction of chemical oxygen demand in influent that would be in sludge
(1) The fraction of CODIn, Tot, t (within the meaning of section 18) that would have been in sludge and not undergone treatment in deep open anaerobic lagoon l to produce methane (FSlu, l), is worked out as follows:
(a) if the historical period of sampling is 10 consecutive days—using the default value mentioned in subsection (2);
(b) if the historical period of sampling is 1 year—using either of the following, as chosen by the project proponent:
(i) the default value mentioned in subsection (2); or
(ii) equation 4.
(2) The default value is:
(a) for domestic or commercial wastewater only—0.6; or
(b) for industrial wastewater only—0.17; or
(c) for a mixture of domestic or commercial wastewater and industrial wastewater—0.6.
(3) The following formula is equation 4:
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FSlu, l means the fraction of CODIn,t that would have been in sludge and not undergone treatment in deep open anaerobic lagoon l to produce methane.
CODSlu, l means the amount of chemical oxygen demand in sludge in deep open anaerobic lagoon l in the historical period of sampling (which is 1 year), in tonnes, worked out in accordance with section 23.
CODIn, l means the amount of chemical oxygen demand in influent entering deep open anaerobic lagoon l in the historical period of sampling (which is 1 year), in tonnes, worked out in accordance with section 21.