Experimental apparatus for simulation research on water quality and quantity of biotical retained elements under artificial rainfall condition

Abstract

The invention provides an experimental apparatus for simulation research on water quality and quantity of biotical retained elements under an artificial rainfall condition. The experimental apparatus comprises a rainwater storage tank, a water pump, an aqueduct, a supporting frame, a water quantity regulation tank, a valve, a water outlet pipe, a spray head, rainfall holes, a porous water distribution plate, an experimental soil bin, a small sampling perforated pipe and a large sampling perforated pipe, wherein the lower outlet of the rainwater storage tank is connected with a water inlet of the water pump; a water outlet of the water pump is communicated with the water quantity regulation tank arranged on the supporting frame through the aqueduct; the outlet of the water quantity regulation tank is provided with the valve and connected with the spray head through the water outlet pipe; the porous water distribution plate which is provided with a plurality of rainfall holes is arranged under the spray head and above the experimental soil bin; and the small sampling perforated pipe is positioned on the central part of the experimental soil bin, while the large sampling perforated pipe is positioned on the lower part of the experimental soil bin. The experimental apparatus for the water quality and quantity simulation research on the biotical retained elements under the artificial rainfall condition has a simple structure, can regulate rainfall intensity and uniformity, and realize water sampling of soil in different time and different structural space, and has an application prospect in the field of environment engineering and ecological engineering.

Description

(1) Technical field [0001] The invention relates to an experimental device for the simulation study of the water quality and quantity of biological retention elements under the condition of artificial rainfall, which is mainly used for the dynamic research of the influence of the designed biological retention elements on the quality and quantity of rainwater under the condition of artificial rainfall, and belongs to the field of environmental engineering and ecological engineering . (2) Background technology [0002] Urban non-point source pollution is a new problem with the rapid development of cities. As the main driving force of pollutant migration, urban storm runoff is the main cause of urban water pollution. Relevant studies at home and abroad have shown that urban land use is not only the root cause of non-point source pollution, but also the medium of pollutant migration. Land use and its changes have a significant impact on non-point source pollution. The increase...

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Problems solved by technology

The field experiment and monitoring process can only reflect the impact of bioretention on urban runoff water volume and water quality under a certain condition, and cannot systematically reflect different climatic conditions, different rainfall intensities, plant types, medium components and depths, and different spaces. The influence of time and time on the dynamic changes of water quality and water quantity, so it is difficult to meet the various requirements of practical engineering applications

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