Anaerobic Digestion at Wastewater Treatment Plants Regulatory Issues Bureau of Resource Protection...

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