Document ID: chunk:federal_register_of_legislation:F2024C00833:reg:2:p7
Version: federal_register_of_legislation:F2024C00833
Segment Type: reg
Provision Reference: reg 2 (pt 7/12)
Character Range: 726812–729687

where:
           CODpsl is the quantity of COD removed as primary sludge from wastewater and treated in the plant measured in tonnes of COD and estimated under subsection (7).
           CODwasl is the quantity of COD removed as waste activated sludge from wastewater and treated in the plant measured in tonnes of COD and estimated under subsection (8).
CODeff is the quantity of COD in 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 default methane emission factor for wastewater with a value of 6.3 CO2‑e tonnes per tonne COD.
CODtrl is the quantity of COD in sludge transferred out of the plant and removed to landfill 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 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
 unmanaged aerobic treatment: 0.3
 anaerobic digester/reactor: 0.8
 shallow anaerobic lagoon (<2 metres): 0.2
 deep anaerobic lagoon (>2 metres): 0.8.
EFslij is the default methane emission factor for sludge with a value of 6.3 CO2‑e tonnes per tonne COD (sludge).
 (6) For subsection (5), an operator of the plant must choose a treatment for MCFww  and estimate the quantity of COD removed from the wastewater as sludge (CODsl).
 (7) For subsection (5), CODpsl may be estimated using the following formula:

where:
VSpsl is the estimated volatile solids in the primary sludge.
 (8) For subsection (5), CODwasl may be estimated using the following formula:

where:
VSwasl is the estimated volatile solids in the waste activated sludge.
 (9) In this section:
methane correction factor is the fraction of COD anaerobically treated.
primary sludge means sludge from the first major treatment process in a wastewater treatment facility that is designed primarily to remove a substantial amount of suspended matter but little or no colloidal or dissolved matter.
waste activated sludge means sludge from a secondary treatment process in a wastewater treatment facility involving aeration and active biological material.

Division 5.3.3—Method 2—methane released from wastewater handling (domestic and commercial)

5.26  Method 2—methane released from wastewater handling (domestic and commercial)
 (1) Method 2 is:

           Step 1. Calculate the amount of emissions of methane released for