A Deep Bed Constructed Wetland Reactor with Switchable Operation Mode

Abstract

The present invention discloses a deep-bed constructed wetland reactor with switchable operating modes, and the deep-bed constructed wetland reactor comprises a pool body, water in and out pipes, a connection pipe, a guide plate, a gravel filler, a filler net post, aquatic plants and other components. The pool body is partitioned into at least two units, independent water in and out systems of adjacent two pool body units are connected by the connection pipe, each pool body unit is filled with a gravel matrix, the upper part of each pool body is provided with the removable replaceable filler net post, and a nitrogen removal, phosphorus removal or carbon source slow-release filler is added into the filler net post according to design. By use of the deep-bed constructed wetland reactor, working conditions of operation of in-series unit continuous flow-intermittent emptying reoxygenation, namely cyclic continuous water in and out-cyclic emptying spare time are used for processing earth's surface initial rainwater runoff overflowed from a combined system discharge port in a rainy season, and working conditions of unit intermittent operation, namely water inflow-reaction-water draining-spare are used for processing dry season sewage of the combined system discharge port. The reactor has the advantages of flexible operation mode, high processing efficiency, strong resistance to shock load, simple management and operation, small footprint, low investment, good visual effects and the like.

Description

technical field [0001] The invention belongs to the technical fields of sewage treatment and environmental protection, and in particular relates to a deep-bed artificial wetland reactor with a switchable operation mode. Background technique [0002] In the ecological restoration of urban rivers, how to treat the initial runoff sewage of the rainy season rainwater separated by the diversion well at the discharge outlet of the combined system with low cost and high efficiency has become a difficult point. Especially in mountainous cities, on the one hand, many combined discharge outlets have limited land use conditions, and the traditional constructed wetland treatment technology occupies a large area, and its application is limited; The problem of the main sewage interception pipe at high elevations along the coast is prominent. It is a relatively economical and feasible way to treat the sewage from the combined discharge outlet by using low-cost constructed wetland treatmen...

AI Technical Summary

Problems solved by technology

In order to achieve higher treatment efficiency, the above-mentioned artificial wetland reactor has a long process flow, a relatively complex structure, a large floor area, and high cost and operation management costs; although the latter reactor is a vertical flow / submerged flow composite artificial wetland , but the depth is still relatively shallow, occupying a large area, low efficiency, and poor adaptability to water quality changes; and the above constructed wetland reactors are all for general urban sewage, and for the sewage of combined discharge outlets, especially the initial surface rainwater runoff. Constructed wetland reactors are quite different

The depth of this reactor can reach 1.5~3 meters. Under different water quality and water quantity conditions, the operation mode can be flexibly changed by switching the operation mode to cope with the change of water quality and water quantity. It has the characteristics of high treatment efficiency, small footprint and strong impact resistance. There are no related reports

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