Constructed wetland processing and comprehensive utilization technique for farm household sewage water and rainwater

Abstract

The invention relates to a farmholding sewage and rainwater mutual wetland treatment and comprehensive utilization process, which comprises the following steps: collecting farmholding sewage through a drainage pipeline network; transporting the farmholding sewage to a tubular type sand sediment trap; enabling the sewage after being treated by the sand sediment trap to automatically flow into a vertical flow type mutual wetland plant bed; enabling the sweater after being purified by the mutual wetland plant bed and treated by a vertical self-flowing aerator to flow into a water storage biological pond; enabling rainwater collected from house roofs, terraces, water ditches and the like after being subjected to sand settlement treatment by a rainwater sand settling basin to flow into the water storage biological pond; and comprehensively utilizing plants generated by the water storage biological pond, the water storage in the water storage biological pond, the mutual wetland plant bed and the water storage biological pond. In the invention, the farmholding sewage treatment and the rainwater treatment are firstly combined to be stored and recovered; the advanced tubular sand settling basin, the vertical flow type mutual wetland plant bed and the vertical self-flow aerator and the water storage biological pond are applied and combined scientifically, so as to achieve the water purifying requirements; and no electric energy and other resource is consumed during the whole process.

Description

technical field [0001] The invention relates to the field of sewage treatment and reuse, in particular to a process for the treatment and comprehensive utilization of farm sewage and rainwater. Background technique [0002] Farm sewage refers to all domestic sewage except human and animal excrement discharged from scattered or concentrated rural homes, farmhouses and towns. At present, the vast majority of these sewage are directly discharged without treatment, and some are directly discharged into local ditches and rivers, polluting the surface water environment; In order to protect water resources, there are secondary biochemical treatment processes in China to treat domestic sewage, but its operation costs are high and it is difficult to popularize and apply; there are also artificial wetlands for treatment, but generally surface flow and push-flow subsurface flow are used, and the treatment efficiency is high. Low, large footprint. Farm rainwater refers to the rainwate...

AI Technical Summary

Problems solved by technology

At present, most of these sewage are directly discharged without treatment, and some are directly discharged into local ditches and rivers, polluting the surface water environment; some are directly discharged into the local surface, seeping into the ground, and polluting groundwater resources

In order to protect water resources, there are secondary biochemical treatment processes in China to treat domestic sewage, but its operation costs are high and it is difficult to popularize and apply; there are also artificial wetlands for treatment, but generally surface flow and push-flow subsurface flow are used, and the treatment efficiency is high. Low, large footprint

Farm rainwater refers to the rainwater received by farm roofs, floors, and roads in rainy days. At present, the rainwater flows away after being washed away from the surface. Most of the rainwater is not treated and recycled, which wastes water resources.

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