Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:3:p4
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 3 (pt 4/5)
Character Range: 751458–754183

0.75, then:

where:
γ is the factor 6.784 x 10‑4 x GWPmethane converting cubic metres of methane at standard conditions to CO2‑e tonnes.
Qcap is the quantity of methane in sludge biogas captured for combustion for the operation of the plant measured in cubic metres.
 (4) For subsections (1) and (3), Qcap is to be calculated in accordance with Division 2.3.6.
 (5) For subsection (2) the factor CH4gen is estimated as follows:
where:
Σw,i is the total CODw,i of wastewater entering the plant.
CODw,i is the COD in wastewater entering the plant related to the production by the plant of any commodity mentioned in column 1 of the table in subsection (8) during the year measured in tonnes of COD, worked out as follows:

           where:
           Prodi has the meaning given by the table in subsection 5.42(9).
           Wgen,i is the wastewater generation rate from the production of any commodity mentioned in column 1 of the table in subsection (8) produced during the year and measured in cubic metres or kilolitres per tonne of commodity.
           CODcon,i is the COD concentration in kilograms of COD per cubic metre of wastewater entering the plant during the year from the production of any commodity mentioned in column 1 of the table in subsection (8).
CODsl is the quantity of COD removed as sludge from wastewater during the year measured in tonnes of COD, worked out as follows:

           where:
           CODw,i is the COD in wastewater entering the plant used in the production of any commodity mentioned in column 1 of the table in subsection (8) during the year measured in tonnes of COD.
           Fsl is the fraction of COD removed from wastewater as sludge by the plant during the year.
CODeff is the quantity of COD effluent leaving the plant during the year, measured in tonnes.
MCFww is the methane correction factor for wastewater treated at the plant during the year.
Note: IPCC default methane correction factors for various types of treatment are:
 managed aerobic treatment: 0
 unmanaged aerobic treatment: 0.3
 anaerobic digester/reactor: 0.8
 shallow anaerobic lagoon (<2 metres): 0.2
 deep anaerobic lagoon (>2 metres): 0.8.
EFwij is the methane emission factor for industrial wastewater.
CODtrl is the quantity of COD in sludge transferred out of the plant and removed to landfill during the year measured in tonnes of COD.
CODtro is the quantity of COD in sludge transferred out of the plant and removed to a site other than landfill during the year measured in tonnes of COD.
MCFsl is the methane correction factor for sludge treated at the plant during the year.
Note: IPCC default methane correction factors for various types of treatment are:
 managed aerobic treatment: 0