Wetland sewage purification system

Abstract

The invention provides a wetland sewage purification system which comprises a first wetland pool, a first sedimentation pool, a second wetland pool and a second sedimentation pool which are sequentially connected from top to bottom, the first wetland pool comprises a reed vegetation layer, a planting soil layer and a filtering layer arranged below the planting soil layer, the filtering layer sequentially comprises a gravel filtering layer, a porous concrete zeolite layer and a coal slag layer from left to right, the first wetland pool comprises also comprises a concrete impermeable layer, a first water inlet pipe and a first drain pipe, the first sedimentation tank is arranged below the first wetland tank, the second wetland pool comprises a wild rice vegetation layer, a planting a soil layer, a filter layer, a concrete impermeable layer arranged below the filter layer, a second water inlet pipe and a second drain pipe, and the second sedimentation tank is arranged below the second wetland tank. Application of mechanical equipment is reduced, field operators are reduced, and the effects of saving energy, reducing consumption and reducing operation cost are achieved.

Description

technical field [0001] The invention belongs to the field of sewage purification, and in particular relates to a wetland sewage purification system. Background technique [0002] Constructed wetland is a ground similar to a swamp constructed artificially. It is a comprehensive artificial ecosystem. It mainly utilizes the physical, chemical and biological synergies of soil, filter material, surface vegetation and microorganisms in the process of system operation to treat sewage in depth. The mechanism of action includes adsorption, retention, filtration, redox, precipitation, microbial decomposition, etc. During the operation of the system, microorganisms are the main tool for degrading pollutants in water. Through the daily respiration and metabolism of microorganisms, most of the organic matter in wastewater can be degraded and assimilated, and become part of its cells, and the selection of suitable fillers has a great impact on the protection of microorganisms. Attachment...

AI Technical Summary

Problems solved by technology

[0004] The survey found that the existing wetland sewage treatment technology has the following problems: (1) Too many mechanical equipment are used in the wetland treatment system, which increases energy consumption in disguise and increases the cost

For example, many sewage pumps were often used in previous designs to transfer sewage from different units, and the operation of sewage pumps requires personnel or automatic systems, and also consumes electricity, which undoubtedly increases operating costs

(2) There is a lack of scientific monitoring of the effect of sewage treatment, and there is often a lack of nodes for testing water quality during the treatment process, so it is not very clear how effective the sewage system treatment system is

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