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A self-flowing underground soil infiltration system without power

A soil infiltration and self-flowing technology, which is applied in the field of unpowered self-flowing underground soil infiltration system, can solve the problems of high operating efficiency, small footprint, low operation and maintenance costs, and achieve high operating efficiency and land occupation. Small area, the effect of improving the energy efficiency of treatment and purification

Active Publication Date: 2022-03-15
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a non-powered self-flowing underground soil infiltration system, which solves the problem that the existing underground soil infiltration system cannot take into account high operating efficiency, small footprint, and low cost of operation and maintenance. low cost problem

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  • A self-flowing underground soil infiltration system without power

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Embodiment

[0043] The test of this example was carried out in a 12° slope outside the farmyard of a villager in Wangdian Village, Sanyuan County, Xianyang City, Shaanxi Province, and the test time was from January to February 2021. System structure such as figure 1 As shown, from top to bottom, there are: plant layer 1, planting soil layer 2, water distribution layer 3, first soil infiltration layer 41, second soil infiltration layer 42, supporting layer 5, infiltration system Anti-seepage walls 8 are set around and at the bottom.

[0044] The plant layer 1 is planted with holly and Chinese rose, the planting soil layer 2 is composed of 50cm thick cultivated soil; the water distribution layer 3 is 15cm thick and is composed of coarse sand with a particle size of about 4cm; In the water layer 3, the water distribution pipe 6 is composed of a DN10PVC water distribution main pipe and a DN5PVC water distribution branch pipe. The water distribution main pipe is set along the direction from t...

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Abstract

The invention discloses an unpowered self-flowing underground soil infiltration system, which sequentially includes a planting soil layer, a water distribution layer, a soil infiltration layer and a supporting layer from top to bottom. The soil infiltration system is inclined as a whole, and the soil infiltration The filter layer includes a first soil infiltration layer and a second soil infiltration layer from top to bottom, and the first soil infiltration layer and the second soil infiltration layer are wedge-shaped structures that match each other, and the first soil infiltration The soil density of the layer is lower than that of the second soil infiltration layer; the water distribution layer is provided with a water distribution pipe, the highest part of the water distribution layer is provided with a water inlet, and the lowest part of the supporting layer is provided with a water outlet. The invention optimizes the division of redox environment and prolongs the hydraulic retention time of sewage in the system by constructing the soil infiltration layer with variable density and variable thickness, improves the system's treatment and purification energy efficiency of sewage, and reduces the occupation of the system at the same time. The floor area realizes the function of the system integrating high operating efficiency, small footprint, and no external driving force.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an unpowered self-flowing underground soil infiltration system. Background technique [0002] Rural living pollution points are many and widespread, which is one of the important reasons for the severe situation of rural non-point source pollution. Especially in the construction of new countryside in my country's loess area, finding a suitable technology for rural domestic sewage treatment is one of the important problems that need to be solved urgently, and the underground soil infiltration system is one of the most suitable technologies. [0003] The underground soil infiltration treatment system is an artificially enhanced sewage ecological treatment technology. It makes full use of the physical, chemical and biological functions of the animals, microorganisms, plant roots and soil that live in the soil below the surface to purify the sewage. It belongs t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/32
CPCC02F3/303C02F3/306C02F3/32
Inventor 吴耀国胡思海孙然郭茜孟昭辉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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