Waste Stabilization Ponds (WSPs) demand large area requirements, limiting their use. A newly proposed Pond-In-Pond (PIP) technology can reduce the land area requirements by approximately 40% while providing the same level of treatment. However, limited knowledge is available on the actual performance of such ponds. This long-term project aims to create a lab-scale model for PIP units, which, combined with computer modeling, will help develop optimal designs for PIPs. As a first phase of research, an extensive review was conducted and includes 30+ articles on the lab-scale design of WSPs. A few earlier studies date back to the 1960s while most studies were done in the last two decades and nearly 50% of the studies focused on facultative ponds which have similar configurations to PIP. Additional details on design including scaling, flow, retention time, placement, and pollutant type were gathered to develop best practices for building a lab-scale model for PIP. Additional details on design including scaling, flow, retention time, placement, and pollutant type were gathered to develop best practices for building a lab-scale model for PIP.
