Composite subsurface flow constructed wetland

• Main Authors: REN JUN, PANG CHANGLONG, PENG KUNGUO, LONG BIN
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2024
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model discloses a composite subsurface flow constructed wetland which comprises a water purification area, a water collection channel arranged on one side of the water purification area, a valve well arranged on the other side of the water purification area and a water distribution channel arranged on the other side of the valve well, the water purification area comprises a planting layer, a protective layer and a gravel layer, and the protective layer is composed of a sponge layer and a steel frame layer. The sponge layer is located on the opposite side of the planting layer and the steel frame layer, the gravel layer comprises a fine sand layer, a gravel layer and a cobblestone layer, the fine sand layer is located at the bottom of the steel frame layer, the gravel layer is located at the bottom of the fine sand layer, the cobblestone layer is located at the bottom of the gravel layer, and impermeable layers are arranged at the bottoms of the water purification area, the water collection channel