Urban rainfall runoff water quality multi-media graded infiltration purification simulation system

Abstract

The invention discloses an urban rainfall runoff water quality multi-media stage seeping-filtering purifying simulation system. The system comprises a device main body (1), wherein the device main body (1) is composed of a plurality of coaxially connected semi-cylindrical uncovered frames with the same semi-diameters, a rotating shaft center of the device main body (1) is positioned at the center of the semicircle; the top layer of the device main body (1) is provided with a combined vegetation layer (2), the middle of the device main body (1) is provided with a plurality of rotary multi-medium percolation layers (3), and the bottom layer of the device main body (1) is provided with an in-situ soil layer (4); each rotary multi-media seeping-filtering layer (3) is communicated with a settling pond (5) through a flexible tube (5); the top end of a rotating shaft of the device main body (1) is connected with a support frame (7), and a rainfall simulation device (6) is arranged on the support frame (7). A water quality state purifying ecological landscape system with compound functions is established through the system disclosed by the invention to meet different water quality emission requirements and urban landscape demands; and meanwhile, the device is simple and compact in structure, easy to realize, convenient to use and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of urban water ecological purification treatment engineering, in particular to a multi-media hierarchical filtration and purification simulation system for urban rainfall runoff water quality, which can quickly simulate different combinations of filtration and purification schemes, and provides for the manufacture and application of urban rainwater purification devices. Certain scientific basis. Background technique [0002] In recent years, with the development of society and economy, the process of urbanization has accelerated, which has not only changed the industrial structure and population occupation, but also changed the land use and regional space. Forests, farmland, wetlands, etc. have been continuously transformed into residential, industrial or commercial land. , leading to a sharp increase in the proportion of urban impervious areas, resulting in changes in evapotranspiration, precipitation, and ...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic and foreign studies on urban rainfall runoff pollutants focus on suspended matter, eutrophic substances, oxygen demand substances, heavy metals and other toxic pollutants as the main pollution sources. Fixed technologies and devices are used to purify the water quality of rain runoff in different regions and under different environmental conditions; cities have special hydrological structures, and the control technology for urban rain runoff pollution processes is unique

The control technology of the existing urban rainfall runoff pollution process at home and abroad takes the treatment of runoff pollution as the breakthrough point, mainly including the establishment of sedimentation tanks, storage tanks, artificial wetlands and water ecological restoration technologies, etc., but the functionality is relatively simple and the purification efficiency In particular, the treatment of runoff compound pollution is still insufficient, and it is urgent to conduct in-depth research on the control technology of rainfall runoff combined with experiments to grasp the dynamic change process of rainfall runoff pollution in water quantity and quality under various purification schemes; outdoor field experiments and monitoring The process can only reflect the rainwater purification effect under a specific condition or scheme, and cannot reflect the impact of rainwater infiltration and purification under different climatic conditions, different rainfall intensities, different plant types, various media filling components, and different time and space. Influenced by the influence, and most of the outdoor experimental devices occupy a large area, easily cause secondary pollution to the environment, and have high production costs; most of the existing related rainwater purification simulation experimental devices only have a single main body, and need to be connected with other devices for matching. Completing the simulation experiment of rainfall runoff water quality purification, the operation is complicated, and it is not convenient for combined installation and transportation

Images