Reproducible filler filter drum for intercepting nitrogen and phosphorus in ecological ditch of farmland

Abstract

The invention discloses a renewable packing filter cartridge applied to nitrogen and phosphorus interception in farmland ecological ditches. The filter cartridge housing is provided with a gate A, a middle grille, a gate B, a filter screen A, a gate D and a filter from the water inlet to the water outlet. The activated carbon adsorption layer is arranged between the screen B and the gate C, and the activated carbon adsorption layer is arranged between the filter screen B and the gate C; the top of the filter cartridge shell is provided with a water distribution system and water quality testing equipment. The flushing spray pipe A and the backwashing spray pipe B are respectively connected to the pressurized water pump; the bottom of the filter cartridge shell is provided with a circulation system composed of four water collection pipes, and the regenerated waste water is discharged through the four water collection pipes and collected into two pipelines , one pipeline directly returns to the ecological ditch, and the other pipeline returns to the farmland through the lift pump. The invention not only improves the interception efficiency of nitrogen and phosphorus by the ecological ditch, but also solves the problem of easy blockage caused by the laying of fillers, and also effectively removes larger suspended substances and odors in the water body of the ecological ditch.

Description

technical field [0001] The invention belongs to the technical fields of sewage treatment and environmental protection, and more specifically relates to a renewable filler filter cartridge applied to nitrogen and phosphorus interception in farmland ecological ditches. Background technique [0002] In recent years, due to the irrational application of a large number of pesticides and chemical fertilizers in agricultural production, the loss of nitrogen and phosphorus has been serious. Nutrients containing nitrogen and phosphorus flow into rivers and lakes through runoff, causing excessive growth and reproduction of algae plants and aquatic organisms, resulting in Eutrophication of river and lake water environment. Therefore, researching and formulating control measures for farmland non-point source pollution, effectively reducing the nitrogen and phosphorus load in the process of farmland drainage, and inhibiting the formation of water eutrophication have become the top priori...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of difficult filler regeneration and low removal efficiency in existing ecological ditches, and to provide a renewable filler filter cartridge for nitrogen and phosphorus interception in farmland ecological ditches, which is not only convenient for filler regeneration but also has Fly ash ceramsite packing filter cartridge with high efficiency nitro

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