Ecological grassed swale simulation experiment device and experiment operating method thereof

Abstract

The invention provides an ecological grassed swale simulation experiment device. The ecological grassed swale simulation experiment device comprises a runoff generation device, a flow-through device, a collecting device and a monitoring device, wherein an ecological grassed swale to be analyzed is arranged in the flow-through device; according to the ecological grassed swale simulation experiment device, experiment used water with different pollutant concentrations is prepared to generate surface runoffs with different pollutant concentrations; a water pump is adjusted to generate the surface runoffs with different hydraulic loadings and flow rate conditions; a corresponding valve is used for controlling to generate one or more of rainfall runoff, road runoff and green space runoff; different ecological grassed swales to be analyzed are quantitatively analyzed; the impact degree of the ecological grassed swales with different surface measures and different soil structures on rainwater interception and pollutant subduction is quantitatively analyzed, the structure of the ecological grassed swale suitable for different surface environments can be found, therefore, the simulation experiment device has very important significances on urban rainwater utilization, control of regulation and storage of urban rainfall surface runoff and pollution control. The invention also provides an experiment operating method.

Description

technical field [0001] The invention relates to the field of urban rainfall runoff regulation and storage and pollution control, in particular to an ecological grass planting ditch simulation experiment device and an experimental operation method for urban green space rainfall runoff and pollution control. Background technique [0002] Accelerated urbanization has led to a substantial increase in the impermeable area of ​​the city, resulting in an earlier flood peak and increased flood volume under the same rainfall conditions, posing enormous pressure on urban drainage and river flood discharge. During the precipitation process, the runoff formed by rainfall flows through the urban ground, and the pollutants formed by the collection directly enter the receiving water body through the drainage system, causing environmental problems. The urban rainfall runoff not only has a large amount of water but also poor water quality, and has become an urban water environment pollution o...

AI Technical Summary

Problems solved by technology

[0003] At present, European and American countries have done a lot of research on the treatment of storm runoff and its pollutants by ecological grass-planting ditch, and there are also many designs and applications. However, domestic research in this area is still relatively small. For the regulation and storage of urban rainfall runoff by ecological grass-planting ditch Lack of quantitative studies on capacity and reduction effects on runoff pollutants

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