Method for water resource cascade adjustment control and water quality ecological purification in high groundwater level coal-mining subsidence area
A technology of coal mining subsidence area and high water level, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of water system disorder, surface water quality deterioration, Problems such as water resource distribution disturbance, to achieve the effect of reducing large-area occupation, uniform spatial distribution, and changing spatial occurrence conditions
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Embodiment 1
[0031] Embodiment 1: this water resources cascade regulation and control and water quality ecological purification method include the following contents:
[0032] 1) The distribution of surface water in coal mining subsidence areas with high water level is relatively concentrated. For the distribution of surface water in backbone ditches and rivers, it is necessary to establish restraint and hierarchical control and cascade regulation of water resources to form a certain level of water resource spatial distribution. An artificial water circulation system integrating control and adjustment;
[0033] 2) The river channel that forms a certain level difference control is a relatively static water body. On the basis of the cascade regulation of the backbone channel, the three-dimensional layout of submerged plants, emergent plants and floating plants, through the natural material exchange during the growth cycle of the vegetation, the adsorption cascades To control the pollutants i...
Embodiment 2
[0048] Example 2: Cascade control measures: Xuzhou Chengbei mining area is a typical high-water level mining area. There is a large area of water accumulation in the coal mining subsidence area. This area is the old course of the Yellow River and the Dingwan River. Due to the large difference in terrain elevation caused by surface subsidence, considering the requirements of water resource distribution, irrigation, and flood discharge, a control gate is established to form a cascade control.
[0049] 1) According to a step difference of 1-2 meters, three levels of control and four levels of water surface are established. The entire water system connects the large water surface and the Dingwan River in the coal mining subsidence area through the backbone channel, and the Dingwan River flows down to the Beijing-Hangzhou Canal. During the control of the entire water system, irrigation The rising water level also facilitates the discharge of flood water during the flood season, fo...
Embodiment 3
[0052] Example 3: Constructed wetland measures:
[0053] 1) Taking the drainage area of the coal mining area as the planning theme of the constructed wetland, the water source mainly depends on surface runoff, irrigation return water and some domestic sewage. From the analysis of the water catchment pattern in the discharge bearing area, the catchment water in the discharge bearing area is mainly supplied by surface and soil seepage, and the incoming water is mainly surface water. Constructed wetlands in coal mining areas are planned according to the surface flow constructed wetland model. Hydrological conditions are the basic conditions for the planning and construction of constructed wetlands. The backbone ditch rivers in the coal mining subsidence area are controlled by cascade gates to regulate water resources, and the water flow into the discharge area is not continuous. During the planning and construction of the Kadlec surface flow constructed wetland, the structure ...
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