Artificial wetland treatment method and device of pickled food processing wastewater

Abstract

The invention relates to an artificial wetland treatment method and device of pickled food processing wastewater. The artificial wetland treatment method comprises the following steps: (1) inlet water back-flowing and buffering; (2) purifying treatment; (3) sewage treatment, namely infiltrated sewage is collected on a water collection layer positioned on the bottommost part of a treatment pond and enters an effluent water buffer pond through water through holes; (4) back-flowing and salt squeezing. The device constructed according to the artificial wetland treatment method comprises an artificial wetland body, wherein one side of the artificial wetland body is provided with an inlet water buffer pond, and the other side of the artificial wetland body is provided with the effluent water buffer pond; the artificial wetland body positioned between the inlet water buffer pond and the effluent water buffer pond is provided with the treatment pond; the treatment pond is sequentially divided into the water collection layer, a treatment layer, a water distribution pipe, a salt squeezing pipe and salt resistant plants from bottom to top; the treatment layer is filled with multilayer artificial wetland media; the water distribution pipe and the salt squeezing pipe are distributed on the surface of the treatment layer; the salt resistant plants are planted in the artificial wetland media. The artificial wetland treatment method disclosed by the invention has the advantages of wide medium source and low price. The device disclosed by the invention solves the shock problem of fluctuated impact of the water quality and water amount of distributed sewage without continuous and uniform water inflow.

Description

technical field [0001] The invention relates to an artificial wetland treatment method and device for pickled food processing wastewater, and is especially suitable for treating small-scale pickled food processing wastewater in rural areas. Background technique [0002] There are a large number of small family or small-scale traditional food processing industries that utilize local resources in rural areas of our country, such as pickling and processing of radish, cabbage, pickled cabbage, bamboo shoots, and meat. This industry not only preserves my country's traditional food culture, but also brings considerable income to local rural residents. Special industries have also been formed in some areas and have become an important by-industry of tourism. However, a certain amount of production sewage, especially salty sewage, is generated during the processing of such products, which is difficult to treat. The main problem is that such processing points are scattered, and the...

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Problems solved by technology

[0003] In order to solve the problems of low water volume, large changes in water quality, water quantity and salinity, and return of salt in constructed wetland medium in the waste water containing a certain amount of salt generated during the processing of scattered pickled food in rural areas, and for the high investment cost of the existing conventional technology, special personnel are required for operation and maintenance , high energy consumption, etc., the present invention provides a method and device for treating pickled food processing wastewater with small power consumption, convenient management, control of surface medium return to salt, buffer water quality, water quantity, and salinity.

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