Technical Resources for Biosolids Managers
Information on methods, technologies, management practices, and domestic septage for biosolids managers.
Pathogen Equivalency Committee (PEC)
According to the 40 CFR Part 503 sewage sludge standards, before sewage sludge can be applied to land, biosolids must be treated to reduce pathogens using nine methods outlined in the regulation. Alternatively, innovative pathogen reduction processes can gain regulatory acceptance by demonstrating equivalency in a process managed by the Pathogen Equivalency Committee and overseen by the permitting authority. In reviewing an equivalency application, the committee ensures that new processes employed for sewage sludge treatment are robust and effective in pathogen reduction in order to protect human health and the environment. For more information on the PEC, Processes to Further Reduce Pathogens (PFRPs), and Processes to Significantly Reduce Pathogens (PSRPs) visit link below.
Biosolids Analytical Methods and Sampling Procedures
Specific analytical methods are required in order to meet monitoring requirements and demonstrate compliance with 40 CFR Part 503. EPA has also developed guidance and conducted studies related to sampling procedures.
Wastewater Treatment Train Technologies
When wastewater reaches a wastewater treatment plant (WWTP) it goes through physical, biological, and chemical processes which clean the wastewater and remove and treat the solids. The following fact sheets are common wastewater treatment train technologies used to treat, stabilize, and dewater biosolids:
Use and Disposal Management Practices
Common management practices for biosolids include land application, incineration, surface disposal, and landfilling. EPA’s 40 CFR Part 503 regulates land application, incineration, and surface disposal of sewage sludge while landfilling of biosolids in municipal solid waste landfills is regulated by 40 CFR Part 258.
Domestic septage is the liquid or solid material removed from septic tanks, cesspools, portable toilets, Type III marine sanitary devices, or similar systems. 40 CFR Part 503 includes requirements for the land application of domestic septage.
- Domestic Septage Regulatory Guidance: A Guide to the EPA 503 Rule
The information in this domestic septage guidance is provided to help the users and disposers of septage understand and follow Part 503. Requirements for persons who apply domestic septage to non-public contact sites is discussed.
- Guide to Septage Treatment and Disposal
The purpose of this guide is to present practical information on the handling, treatment, and disposal of septage in a concise, recommendations-oriented format for easy use by administrators of waste management programs, septage haulers, and managers or operators of septage handling facilities.
- Process Design Manual: Land Application of Sewage Sludge and Domestic Septage
Chapter 11 of this document focuses on the land application of domestic septage to agricultural land, forests, or reclamation sites.