Reclaimed water supplementing riverway system and method based on river bank filtration

Abstract

The invention provides a reclaimed water supplementing riverway system and method based on river bank filtration. The system comprises a river bank filtration-biological treatment unit. A vertical anti-seepage layer is arranged on the side, away from a riverway, of the river bank filtration-biological treatment unit, revetment bricks are laid on the side, close to the riverway, of the river bank filtration-biological treatment unit, and an organic pollutant efficient removal layer, a denitrification layer and an aerobic nitrification layer are sequentially arranged between the revetment bricksand the vertical anti-seepage layer from bottom to top. The aerobic nitrification layer comprises a first multifunctional tube and mixed and laid gravels and modified zeolite. The denitrification layer comprises a second multifunctional tube and ceramsite, volcanics and iron-coated quartz sand symmetrically distributed from outside to inside. The organic pollutant efficient removal layer comprises a third multifunctional tube and mixed and laid gravels and modified zeolite. It can be avoided that eutrophication is caused when reclaimed water is supplemented to the riverway, and the underground water pollution risk caused by the supplementing of reclaimed water is reduced.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a reclaimed water supply river channel system and method based on river bank infiltration. Background technique [0002] With the population growth and rapid economic development in our country, the demand for water resources is gradually increasing, and the situation of water resources is becoming increasingly severe. The frequent interruption of rivers in the north has caused a series of ecological environmental problems such as water pollution and ecological environment degradation. The water body that meets certain usage requirements after the sewage generated in production and life is treated is called "reclaimed water". Reclaimed water has great utilization potential and has become a reliable and stable water source to maintain the ecological water demand of northern rivers. As a new source of urban water supply, recycled water has a wide range of uses, such as agricultural...

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Problems solved by technology

On the other hand, the concentration of rainwater pollutants in the initial stage of rainfall is high, and the surface runoff formed is likely to cause non-point source pollution to the river.

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