Biological filter and design method thereof

A design method and technology of filtering ditch, which are applied in waterway systems, drainage structures, water supply devices, etc., to achieve the effect of simple process, restoration of urban ecological environment, and advanced technology

Inactive Publication Date: 2015-11-18
XIAN MUNICIPAL ENG DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the pollution and waterlogging problems caused by urban road surface hardening, and provide an ecological filter ditch and its design method, which can alleviate urban waterlogging disasters, reduce urban road runoff pollution, realize rainwater resource utilization, and restore urban ecological environment

Method used

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  • Biological filter and design method thereof

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be further described.

[0030] see figure 1 and figure 2 , an ecological filter ditch, comprising an aquifer 1 with a water inlet 7, an overburden layer, a planting soil layer 2, a packing layer 4 and a gravel drainage layer 5 are successively arranged under the aquifer 1, and the gravel drainage layer 5 is provided with The perforated drainage pipe 6 connected to the overflow well 8, the aquifer 1 is lower than the road edge, and the total depth of the planting soil layer 2, the filling layer 4 and the gravel drainage layer 5 is greater than 0.6m.

[0031] The top of the aquifer 1 is 3-5cm lower than the edge of the road, and the planting soil layer 2 is made of sandy loam or a mixture of sand and soil, and the thickness of the planting soil layer 2 is ≥0.25mm.

[0032] The filler layer 4 is a combination of one or more of fly ash, blast furnace slag, sand or planting soil with a particle siz...

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Abstract

The invention discloses a biological filter and a design method thereof. Through a planting soil layer, a filling layer and a gravel drainage layer, sewage can be subjected to multistage filtering and then is introduced into an overflow well through a perforated drain pipe. By employing the biological filter, runoff pollution of urban roads can be reduced, reclamation of rainwater can be achieved, the urban ecological environment can be restored, and rainwater utilization engineering of construction zones and urban roads can be safe, reliable, economical and applicable, and can be advanced in technology.

Description

【Technical field】 [0001] The invention belongs to the field of municipal construction, and in particular relates to an ecological filter ditch and a design method thereof. 【Background technique】 [0002] With the improvement of urbanization level and the continuous expansion of land hardening area, the problem of urban non-point source pollution is becoming more and more serious. A series of pollutants are washed and collected during the process of rainfall and runoff, and finally discharged into the water body to cause non-point source pollution. It is an important part of urban water environmental pollution. The US Environmental Protection Agency (USEPA) has classified this Pollution ranks as the third leading source of pollution in rivers and lakes across the United States. It has the characteristics of accumulation in sunny days, discharge in rainy days, strong randomness, strong suddenness, and large pollution runoff. [0003] The main pollution sources of storm runof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F5/04
Inventor 王社平黄宁峻王亚陆马耀平张斌令朱文涛周文献张日霞
Owner XIAN MUNICIPAL ENG DESIGN & RES INST
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