Modular constructed wetland sewage treatment plant

Abstract

A modular constructed wetland sewage treatment plant comprises a plurality of modules in series connection, parallel connection or series-parallel combination. A module 1 is located at a water inlet end; each module comprises a cubic frame; the frame is sequentially provided with a matrix unit 1, a matrix unit 2 and a matrix unit 3 along the water flow direction; the matrix unit 1, the matrix unit 2 and the matrix unit 3 are filled with matrix; pretreated sewage enters into a distribution channel, then enters the module 1 through a water distribution wall, sequentially passes through the matrix unit 1, the matrix unit 2 and the matrix unit 3, enters a module 2, flows along each module and eventually enters a water-collecting groove at the rear end of the final stage of module. When the wetland is clogged, a draw ring is pulled to take out the blocked part, and a new module or unit is arranged for replacement. The old module, matrix unit and inner matrix are treated for regeneration and can be repeatedly used to avoid wasting resources.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and particularly relates to a modular constructed wetland sewage treatment device, which is especially suitable for short-term, emergency sewage treatment and sewage treatment in small and medium-sized rural towns with low population density. Background technique [0002] With the increasingly serious problem of water pollution, a series of powerful measures have been taken at home and abroad to control water pollution. Constructed wetland is a sewage biological treatment technology developed in the late 1970s. Due to the advantages of low investment and operation costs and convenient maintenance and management, this technology is especially suitable for rural areas with relatively backward capital and technology. Under the background of centralized management of rural environment in my country, this technology has been widely promoted and used. However, in the process of field operati...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a modular constructed wetland sewage treatment device, which can significantly improve the defects of traditional constructed wetland sewage such as long construction period, easy clogging of matrix, and uneven water distribution.

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