The core of designing and constructing an ecological purification system is based on ecological principles, forming a multi-level aquatic biological system, constructing a food chain, degrading, fixing or transferring pollutants and nutrients, and purifying water quality through this process. The schematic diagram is as follows:

Technical principle:

Planting and restoring aquatic vegetation, especially submerged vegetation, through ecological restoration techniques to improve water quality and make the water clear; And through the photosynthesis of the repaired submerged vegetation, a large amount of dissolved oxygen is brought into the sediment, which increases the oxidation-reduction potential in the sludge, promotes the growth of benthic organisms including aquatic insects, worms, snails, and shellfish, and thus restores the diversity of the aquatic ecosystem; Finally, the original indigenous aquatic animals such as fish, shrimp, and crabs are placed in an orderly manner to balance the productivity of submerged vegetation and optimize the diversity of aquatic organisms in the water, forming a virtuous cycle of aquatic ecological self purification system and comprehensively restoring the aquatic ecosystem. At the same time, the purification of water bodies through the circulation of nutrients in the ecosystem is called "ecological self purification" of water bodies.