Anaerobic Digestion Anaerobic Digestion at Wastewater at Wastewater Treatment PlantsTreatment Plants

Regulatory IssuesRegulatory IssuesBureau of Resource Bureau of Resource ProtectionProtection

April 2011

GoalsGoalsPRIMARY

◦ Effluent that meets permit limits

◦ Proper operation of treatment (AD) unit

◦ Minimize nuisance potential

◦ Promote beneficial reuse of wastewater residuals

SECONDARY ◦ Optimize energy

production ◦ Secure consistent

municipal revenue stream

Regulatory ChangesRegulatory ChangesRevisions to 314 CMR 12.00 –

Operation & Maintenance Regulations◦Allow a POTW to accept SSO at

sludge-only anaerobic digesters with Department approval

◦Clarify requirement for Department approval of the O&M Manual

◦New reporting requirements for SSO

Approval ProcessApproval ProcessSubmission of

Engineering Report◦Design criteria, disposition

of residuals, certificationOperational &

Maintenance Manual Revisions◦Add facilities, changes to

existing facilities, schedules, staffing changes

Reporting Requirements◦Maintain adequate records

of source & volume of approved SSO

Additional ConsiderationsAdditional ConsiderationsTraining Program for operatorsQA/QC ProgramContingency Plan