This research examined existing work addressing the performance of primary treatment units in onsite wastewater systems. Design, construction/installation, operation, monitoring, and maintenance issues were considered, with a focus on factors likely to affect primary unit treatment objectives, including influent characteristics, sizing, hydraulic design, compartmentation, influent and effluent appurtenances, and seasonal effects. Published by WERF. 120-page soft cover report, two facts sheets, technical guide, online bibliographic database, and online PDFs. (2008)
Originally funded as WERF project 04-DEC-7.