Introduction to P-Trap Software for Designing Phosphorus Removal Structures

Phosphorus (P) removal structures are a new best management practice for filtering dissolved P in non-point drainage from legacy P soils through use of P sorption materials (PSMs). Structures must be designed according to characteristics of the site (hydrology and constraints) and PSMs to be utilized, as well as user-defined goals (P removal, lifetime, and flow rate), making it a cumbersome process. A freely available P Transport Reduction App (P-TRAP) allows users to quickly produce a custom design or evaluate a hypothetical or existing structure.