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

Abstract

The invention discloses a reproducible filler filter drum for intercepting nitrogen and phosphorus in an ecological ditch of a farmland. A gate A, a middle grating, a gate B, a filter screen A, a gateD, a filter screen B and a gate C are arranged on a filter drum shell from a water inlet to a water outlet; an activated carbon absorbing layer is arranged between the filter screen B and the gate C;a water distributing system and a water quality detecting device are arranged on the top of the filter drum shell; the water distributing system comprises a backwash spraying pipe A and a backwash spraying pipe B; the backwash spraying pipe A and the backwash spraying pipe B are connected with a pressurizing water pump; a circulating system composed of four water collecting pipelines is arrangedat the bottom of the filter drum shell; the regenerated wastewater is drained from the four water collecting pipelines and then is collected into two pipelines; regenerated wastewater in one pipelinedirectly flows back to the ecological ditch and regenerated wastewater in the other pipeline flows to the farmland through a lifting pump. According to the invention, the intercepting efficiency of the ecological ditch for nitrogen and phosphorus is increased, the problem of blocking easily caused by the filler paving is also solved and the larger suspended materials and odors of water in the ecological ditch are effectively removed.

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 nitrogen and phosphorus interception effect

It not only improves the interception efficiency of nitrogen and phosphorus in ordinary ecological ditches, but also solves the problem of easy blockage caused by the laying of fillers, and effectively removes large suspended substances and odors in the water body in ecological ditches, with high treatment efficiency and simple operation , low cost, good environmental benefits, etc.

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