Renewable uninterrupted artificial wetland system

Abstract

The invention relates to a renewable uninterrupted constructed wetland system, which comprises a subsurface flow constructed wetland A and a subsurface flow constructed wetland B. The subsurface flow constructed wetland A and the subsurface flow constructed wetland B are both internally provided with a filler area, one side of the subsurface flow constructed wetland is provided with a water inlet pipe and a backwashing drainage pipe, and the other side of the subsurface flow constructed wetland is provided with an aeration / backwashing water pipe and a drainage irrigation pipe. A combined distribution pipe is arranged in the filler area, one end of the combined distribution pipe is connected with an aeration / backwashing water pipe, the aeration / backwashing water pipe is respectively connected with an air pump and a water pump through pipelines, and upper limit alarm liquid level switches and lower limit alarm liquid level switches are arranged in the subsurface flow constructed wetland A and the subsurface flow constructed wetland B. According to the invention, the organic matters blocked among the fillers are degraded through aeration, the total amount of the organic matters blocked among the fillers and attached to the fillers is effectively reduced, and the residual organic matters are further stripped from the fillers through reverse flow flushing water, so that the problem of blocking of the subsurface flow constructed wetland is fundamentally solved.

Description

technical field [0001] The invention belongs to the field of energy-saving and ecological sewage treatment, and in particular relates to a constructed wetland system. Background technique [0002] In view of the fact that a large number of subsurface constructed wetlands have been constructed and put into use in the field of sewage treatment, after long-term operation, most of them have more or less blockage problems. The general solution is to either excavate all the fillers and discard them, and then refill the filter material; or dig out the fillers and perform in-situ regeneration or ex-situ regeneration. These methods all cause huge economic losses and a lot of material waste. SUMMARY OF THE INVENTION [0003] Purpose of the invention: The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a method that does not need to dig out the fillers. When the system is blocked, the organic matter blocked between the fillers can be de...

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Problems solved by technology

[0003] Purpose of the invention: The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method that does not need to dig out the filler. When the system is clogged, the organic matter that is blocked between the fillers can be degraded by aeration to effectively reduce the clogging in the filler. The total amount of organic matter attached to the filler, and then the residual organic matter is further stripped from the filler by reverse flow flushing water, which fundamentally solves the problem of subsurface flow constructed wetland blockage. Renewable uninterrupted constructed wetland system

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