Three-dimensional radial inward artificial wetland sewage treatment system

Abstract

The invention discloses a three-dimensional radial inward artificial wetland sewage treatment system. The three-dimensional radial inward artificial wetland sewage treatment system comprises an annular anaerobic unit and an artificial wetland, wherein the inner ring of the annular anaerobic unit is vertically filled with the artificial wetland; a water inlet pipe for guiding sewage to flow to the annular anaerobic unit is mounted on the outer ring of the annular anaerobic unit; a seal cover is arranged on the top face of the annular anaerobic unit; a drainage pipe is mounted at the circle center of the bottom of the artificial wetland; the sewage permeates in the artificial wetland from the annular anaerobic unit, and flows in the drainage pipe for drainage to the circle center of the bottom of the annular anaerobic unit after being filtered through the artificial wetland. The system has the advantages of simple structure and blockage prevention, and the decontamination effect can be effectively improved.

Description

technical field [0001] The invention mainly relates to sewage treatment technology, in particular to a three-dimensional centripetal constructed wetland sewage treatment system. Background technique [0002] Constructed wetland ecological engineering is a sewage treatment system developed in the 1970s, which makes full use of the triple synergy of physics, chemistry and biology of the "substrate-microbe-plant" complex ecosystem to purify sewage. Compared with other traditional biological treatment methods, constructed wetland ecological engineering has the advantages of low investment, low operation and management costs, utilization of renewable energy (solar energy, wind energy), and strong adaptability to changes in water quantity and water quality. It is widely used in the field of sewage (waste) water treatment. [0003] However, in the process of sewage treatment of constructed wetlands, the problem of system function loss due to system blockage is common, which has be...

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Problems solved by technology

Under the same hydraulic load, the organic load in the water intake area is relatively large, which is also the reason why the water intake area is more likely to be blocked; as the wetland system removes organic matter in the sewage, the flow direction of the organic load gradually decreases, which is not conducive to the plants and animals in the wetland system. Growth of microorganisms and whereabouts of pollutants

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