WE&RF Unveils Report on Pre-Treatment Standards for IPR/DPR

Resource Recovery, Technology and Innovation

WE&RF released a new research report on pretreatment standards for agencies interested in adding or expanding their water reuse facilities. The report features three California agencies: City of Los Angeles; City of San Diego and the Orange County Sanitation District. The project was funded by SoCal based Metropolitan Water District.

The research project consisted of three integrated components:

• A literature compendium
• Utility case studies
• Guideline for Source Control and Source Water Treatment Facility Design and Operation

Together, the three documents provide information that facilities can use to implement their own source control programs, especially in cases where a move to potable reuse is in progress or in their future. The Guidelines provide objectives for the development of these programs, as well as design considerations related to advanced water purification and source water treatment facility operational issues that impact IPR/DPR systems.

According to the reports author,  , the primary objectives of the guidance document is:

• Evaluate upstream wastewater treatment impacts (e.g., biological treatment through N/dNnitrification/
  denitrification and other means, chemical treatment, industrial source control) on direct potable reuse (DPR)
  source water quality and DPR processes
• Evaluate impact of hydraulic control mechanisms (e.g., flow equalization and source water storage
  buffers) on influent water quality and flow variations that “stress” the DPR process.

The report is free for WE&RF subscribers, $50 for non-members. Purchase the report >