soil infiltration device

Abstract

The invention relates to the technical field of sewage treatment, and especially relates to a soil percolation device. The soil percolation device comprises a shell, plants and improved soil used for filtering sewage, wherein the shell is a hollow shell with an open end, and a water outlet is formed in the lower end of the shell; the improved soil is arranged in the shell, and the plants are planted on the improved soil. The plants are capable of absorbing solid pollution loads such as nitrogen and phosphorus in the improved soil, reducing the background values of the contents of pollutants in the improved soil, and ensuring the adsorption rates of the improved soil for the pollutants such as the nitrogen and the phosphorus; meanwhile, when sewage flows through the soil percolation device disclosed by the invention, the accumulated amounts of the pollutants in the improved soil are low, and the probability of taking the pollutants such as nitrogen and phosphorus in the improved soil away from the soil percolation device to seriously influence the effluent quality is greatly reduced; and therefore, the water body pollution caused by washing out the pollution loads accumulated in the improved soil due to the flowing of the sewage is avoided.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a soil infiltration device. Background technique [0002] In today's society, environmental pollution has become one of the social issues we are most concerned about. Especially with the beginning of the industrial revolution, sewage such as domestic sewage and industrial wastewater produced by human activities entered the water body, and the amount exceeded the self-purification ability of the human body, thus causing water pollution. Since water is the basis of human existence, in order to control water pollution, people have designed soil infiltration devices. [0003] The soil infiltration device in the related art includes a planting layer and a percolation medium layer; the percolation medium layer is arranged at the bottom, and the planting layer is arranged above it. Domestic sewage and industrial wastewater flow into the soil infiltration device before flowing...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a soil infiltration device to solve the problem in the prior art that the accumulated pollution load will be washed out when the sewage flows through the infiltration medium layer of the soil infiltration device, which will seriously affect the water quality of the effluent, thereby causing water body pollution. technical problem

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