Because of this, the ecology of the wetland (soil components, water, vegetation, microbes, sunlight processes, etc.) becomes the primary system to remove pollutants. Water in an artificial wetland tends to be filtered slowly in comparison to systems with mechanized or explicitly engineered components.
This is why the wetland's ecosystem (including soil components, water, vegetation, microbes, and sunlight processes) serves as the main system for removing pollutants. In contrast, water filtration in an artificial wetland occurs at a slower rate than in systems equipped with mechanized or explicitly engineered features.