Device and method for recycling tail water based on food chain

Abstract

The invention discloses a device for recycling tail water based on a food chain. The device comprises treatment tanks, a circulating pump and an aeration pump device; the treatment tanks comprise a first-stage treatment tank, a second-stage treatment tank and a third-stage treatment tank which are communicated with one another; the first-stage treatment tank, the second-stage treatment tank and the third-stage treatment tank are respectively provided with tail water inlets; the first-stage treatment tank and the second-stage treatment tank are respectively provided with reflux holes; the first-stage treatment tank and the third-stage treatment tank are connected through the reflux holes, a water pipe and the circulating pump for circulating fed water; and the aeration pump device is arranged in the third-stage treatment tank; 0.2-0.5 m later artificial matrixes are laid in the first-stage treatment tank, the second-stage treatment tank and the third-stage treatment tank respectively, and plants are planted on the artificial matrixes; the invention further designs a utilization method. The method is easy to operate, can bring the effect of the tail water resource in to full play, islow in operation cost, can further remove nitrogen and phosphorus substances contained in the tail water. The planted plants are scientifically selected, the environment can be beautified, and an ornamental value is achieved.

Description

technical field

[0001] The invention belongs to the technical field of tail water advanced treatment, and specifically relates to a device and method based on food chain tail water resource recycling and utilization, which have the functions of highly efficient deep nitrogen and phosphorus removal and environmental beautification. Background technique

[0002] With the continuous improvement of the requirements for sustainable development of resources, how to efficiently use the tail water after sewage treatment to turn it into a product that can be used as a resource has become a hot spot in the field. Today, the tail water of sewage treatment plants is mainly used for toilet flushing, road flushing, municipal greening, and supplementary landscape water. In addition, the tail water is mainly discharged into rivers and lakes.

[0003] At present, the effluent water quality of most sewage treatment plants has been required to meet the first grade A standard, but there is sti...

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