Method for treating rural rivers through multi-stage ecological pond

Abstract

The invention discloses a method for treating rural rivers through multi-stage ecological pond. According to the method, the multi-stage ecological pond comprise multi-stage ecological pond systems, each ecological pond system is arranged on the two sides of one rural river, and is arranged at intervals in the flow direction of the corresponding rural river and comprises ecological ponds, overflowdams and water gates, each ecological pond is a semi-circular flow channel, the two ends of each ecological pond are communicated with the corresponding rural river, aquatic plants are planted all around in each ecological pond, an aerating device is arranged in each ecological pond, meanwhile, fishes are bred in each ecological pond, and each overflow dam is located in the corresponding rural river and is used for forcing river water to flow into the corresponding ecological pond. The method for treating the rural rivers through the multi-stage ecological pond systems fully relies on an ecological treatment technology and has the advantages of being low in construction and maintenance cost, good in treatment effect, free of secondary pollution, simple in later-period operation management, capable of beautifying the landscape and the like; and in addition, the problem of rural river pollution can be solved, and the water quality problem caused by the fact that the rural rivers flow toa downstream main stream can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of water quality purification, in particular to a method for harnessing rural rivers by multi-stage ecological ponds. Background technique [0002] Rural rivers are generally rural drainage ditches or tributaries of larger rivers, and are the main sinks of rural non-point source pollution such as rural domestic sewage, aquaculture wastewater, and farmland receding water. Rural rivers are usually located on both sides of villages, surrounded by large areas of farmland, and domestic sewage, breeding wastewater, and agricultural pollution continue to flow into rural rivers, resulting in poor water quality and excessive organic matter, nitrogen, phosphorus and other pollutants. With the development of the economy and the improvement of living standards, people's demand for meat products is increasing day by day, and the pollution of animal husbandry will further intensify; with the development of the vegetable, ...

AI Technical Summary

Problems solved by technology

[0004] At present, river regulation methods are mainly divided into three types: physical, chemical, and biological. The physical type mainly includes filtration, sedimentation, natural or artificial aeration, etc. This type of method has the advantages of low cost and universal adaptability, but the removal of pollutants Ineffective, palliative, not root

Chemical methods mainly include spraying flocculants, chemical precipitation, etc., which have a high pollutant removal effect, but have defects such as treating the symptoms but not the root cause, high cost, and may cause secondary pollution; biological methods mainly include artificial wetlands, ecological ponds, ecological Floating beds, biological agents, etc. These methods transfer, transform and degrade pollutants in water, improve water quality, build water ecosystems with complete trophic level structures, and fundamentally restore the health of rural river water systems

The biological method has the characteristics of being stable and effective, safe and durable, low engineering cost, low operating cost, and can be combined with greening environment and landscape improvement. At the same time, there are defects such as slow effect and being affected by seasons and climate conditions.

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