Oil-water separation magic cube refers to a device with bioretention function that standardizes, modularizes, and intensifies the design of traditional sponge tree pools using finished components. Through multifunctional modules, it controls elevation, infiltration rate, drainage time, and oil-water separation, while enhancing oil-water separation, ecological aesthetics, and sedimentation purification effects. It adapts to different environments and achieves controllable storage functions. Additionally, based on delayed regulation technology, it intensively utilizes the space of prefabricated functional modules to store runoff rainwater, which is evenly released slowly after rainfall—effectively preventing urban waterlogging by "not competing for drainage during rain and discharging orderly after rain." Through delayed filtration, sedimentation, and purification, it effectively controls runoff pollution and enables automatic pollutant removal. Standardized modules improve construction quality, shorten construction cycles, reduce environmental pollution, and increase comprehensive benefits, making it a green, environmentally friendly, economical, and low-carbon foundational rainwater control facility for sponge cities.

The equipment features numerous characteristics such as no power requirement, no water accumulation, no clogging, short construction period, long lifespan, oil-water separation, delayed regulation, even and slow release, automatic sewage discharge, low maintenance, manageable rainwater planning, and guaranteed quality. It can be widely applied in all aspects of non-point source pollution treatment.