Method and system for treating sewage by using bound strengthened tidal stream artificial wetland

Abstract

The invention belongs to the field of sewage treatment, and relates to a method and system for treating sewage by using a bound strengthened tidal stream artificial wetland. The system comprises a bound strengthened aerobic wetland bed body (10) and a carbon source replenishing type anaerobic wetland bed body (11), wherein the aerobic wetland bed body (10) consists of a plurality of small tidal stream artificial wetland columns and gaps, and is connected with a pretreatment unit (1) through a water distributing pipe (5); a water distributing pipe (6) is arranged at a water inlet part of the anaerobic wetland bed body (11), and a water distributing pressure divider (7) is arranged in the water distributing pipe (6) and is communicated with the pretreatment unit (1); and a siphon drain pipe (13) is arranged at a water outlet part of the system, and the height of the outlet is equal to that of a permanent submerged liquid level (12). The invention provides the method and system for treating the sewage by using the bound strengthened tidal stream artificial wetland to solve the problems that the tidal stream artificial wetland has shot stream phenomena in practical application, the bed body is poor in removal effect on nitrate and the like.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method and a system for treating sewage in a bundled enhanced tidal flow constructed wetland. Background technique [0002] In recent years, with the rapid development of the economy and the continuous improvement of people's living standards, the amount of sewage discharge has also continued to increase, making my country's water eutrophication and environmental water quality deterioration increasingly serious. At present, my country's sewage treatment mainly relies on the traditional centralized water treatment process. Although the technology and process have become increasingly mature and perfect, they are facing the problem of high construction and operation costs. Many economically underdeveloped areas simply cannot afford large-scale water treatment. Sewage treatment plants or many established sewage treatment plants are idle due to a shortage of operating fund...

AI Technical Summary

Problems solved by technology

[0007] The bundled enhanced aerobic wetland bed is composed of several small tidal flow constructed wetland columns, and the small tidal flow constructed wetland columns and the gaps between the columns can form an independent tidal flow wetland bed, which avoids the phenomenon of short flow. It solves the lack of partial reoxygenation capacity caused by simply expanding the traditional tidal flow constructed wetland, and enhances the large-scale tidal flow constructed wetland reoxygenation capacity, thereby further improving the sewage treatment capacity

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