Composite constructed wetland system

Abstract

The invention relates to a composite constructed wetland system. The composite artificial wetland system comprises a horizontal subsurface organic filler constructed wetland unit and a vertical downward subsurface constructed wetland unit which are sequentially arranged in the direction of water current, wherein the horizontal subsurface organic filler constructed wetland unit comprises a drop shaft, a first gravel layer, a second gravel layer, an organic filler layer, a pervious concrete slab, a non-woven fabric layer, a quartz sand layer, aquatic plants, a water inlet, an effluent collectingwell, a water outlet and a ventilating mechanism; the organic filler layer consists of a honeycomb mechanism filled with a magnetic organic filler; a fixed plate is arranged at the bottom of the honeycomb mechanism; the vertical downward subsurface constructed wetland unit comprises a fourth gravel layer, a ceramsite layer, a third gravel layer and a planting layer which are sequentially arrangedfrom bottom to top. According to the composite constructed wetland system provided by the invention, the blockage problem of constructed wetland is effectively solved; in addition, high-load sewage can be effectively purified.

Description

technical field [0001] The invention relates to the field of constructed wetlands, in particular to a composite constructed wetland system, in particular to a composite constructed wetland system capable of effectively removing organic matter and nitrogen and phosphorus pollutants in sewage under relatively high pollution load conditions. Background technique [0002] Constructed wetland system sewage treatment technology is an international proposed in 1970 with low investment and construction cost, low operating cost, low operating technology, low energy consumption, certain biological safety of effluent, significant ecological and environmental benefits and beautification of the environment, which can be realized Sewage treatment process with characteristics such as waste water resource utilization. Constructed wetlands have been a typical ecological sewage treatment technology for decades. At present, they have been widely concerned and applied in many countries at home ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of easy blockage of constructed wetlands and low sewage load, and propose a composite constructed wetland system composed of horizontal subsurface flow organic filler constructed wetland unit and vertical subsurface flow constructed wetland unit, so as to improve wetland treatment of organic matter, nitrogen and phosphorus. The effect of pollutants

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