Superposed sewage treatment system

Abstract

The invention discloses a superposed sewage treatment system, and belongs to the technical field of sewage treatment. The whole structure of the system is divided into an upper layer and a lower layer; the lower layer comprises a purifying main body for purifying sewage, a sewage tank communicated with the upstream of the purifying main body, and a clean water tank communicated with the downstreamof the purifying main body. The purification main body is sequentially provided with a central isolation layer and a porous filtration foundation from top to bottom, aquatic plants are planted on thecentral isolation layer, and roots of the aquatic plants extend into the porous filtration foundation; and the horizontal height of the central isolation layer is higher than the horizontal height ofthe upper surface of the clean water tank, and a wetland is arranged on the upper portion of the central isolation layer. The system has the advantages that the occupied area is small, total phosphorus and total nitrogen reach the standard stably, terminal maintenance is easy, maintenance is convenient, and environment protection is achieved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a superimposed sewage treatment system. Background technique [0002] With the increase of social population, the development of industry and agriculture has also been greatly improved, and the sewage produced by industrial and agricultural production and life is also increasing day by day. In order to bring a better environment to production and life, improving the treatment effect of sewage has become a problem that needs to be dealt with urgently. [0003] At present, most sewage treatment systems use microorganisms to remove pollutants in sewage, which have limited removal capacity for heavy metals, total nitrogen and total phosphorus; sewage treatment systems have a strong odor and the treatment environment is dirty and messy. In recent years, my country's environmental protection requirements are also gradually increasing, and the sewage discharged into the river is require...

AI Technical Summary

Problems solved by technology

[0005] 1. After sewage treatment, the dissolved oxygen content in the drainage is low, the nutrients in the water are less, and the biochemical effect is poor, which is not conducive to the biochemical degradation of organic matter in the water

[0006] 2. High investment cost, high operating cost, complicated management and operation, and many managers

[0007] 3. The sewage treatment device occupies a large area

[0008] 4. The total nitrogen and total phosphorus after sewage treatment are not up to the standard

[0009] 5. The operation process of the sewage treatment plant will cause great damage to the surrounding environment

[0010] 6. The uneven filling of sewage treatment fillers makes the water flow uneven. With the increase of the operating time of the device, the fillers are hardened and the sewage treatment effect is reduced.

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