Document ID: chunk:federal_register_of_legislation:F2022C00227:reg:22
Version: federal_register_of_legislation:F2022C00227
Segment Type: reg
Provision Reference: reg 22
Character Range: 65150–67007

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:

       where:

       t is a project treatment facility.

       l is a deep open anaerobic lagoon that is part of project treatment facility t and was replaced as part of the project.

       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.

       (4) In this section:

       l is a deep open anaerobic lagoon that is part of project treatment facility t and was replaced as part of the project.