Multistage treatment method suitable for river pollution in rural areas

Abstract

The invention aims to provide a multistage treatment method suitable for river pollution in rural areas. Multistage composite biological filter walls are arranged in a river at intervals, the composite biological filter walls are perpendicular to the water flow direction of a river channel, the composite biological filter walls are laid from the bottom of the river, the top surfaces of the composite biological filter walls are higher than the normal water level of the river, each composite biological filter wall comprises a gravel layer, a zeolite layer, a functional filler layer and a coarsesand layer are sequentially laid from bottom to top, and every composite biological filter wall is covered with a gabion box. The multistage treatment method conforming to the pollution characteristics of rural rivers is created for the characteristics of high nitrogen and phosphorus content, obvious eutrophication trend and the like of rivers in rural areas, enriches the waterfront landscape of rural rivers, creates layout to provide hydrophilic landscape and appreciation experience, has ecological property and landscape property, and is suitable for being promoted and used.

Description

technical field [0001] The invention belongs to the field of river sewage treatment, in particular to a multi-stage treatment method suitable for river pollution in rural areas. Background technique [0002] In recent years, with the construction of new countryside, the living standards of farmers in our country have been greatly improved, and the living conditions have been greatly improved. However, at the same time of economic development, due to the weak awareness of ecological environmental protection of rural residents and the lack of corresponding governance measures, various problems have also appeared in rural rivers, such as the wanton discharge of domestic sewage, and the random stacking and dumping of domestic garbage, which has led to rural Rivers are seriously polluted, and problems such as eutrophication, loss of biodiversity, water pollution, damage to ecosystems, and decline in ecological functions are common. According to statistics, at present, more than ...

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Problems solved by technology

However, non-point source pollution and some other pollution are difficult to stop, and most of these measures require a large amount of engineering, which is time-consuming and labor-intensive to implement, and the economy is not high, which weakens the

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