Combination process for advanced treatment on urban storm runoff
A technology of advanced treatment and combined process, which is applied in the directions of water/sewage multi-stage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. and other problems, to achieve high removal efficiency and alleviate the effect of water shortage
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[0028] The combined process of advanced treatment of urban rainstorm runoff according to the present invention can fully remove the pollutant characteristics of urban rainstorm runoff, and through processes such as filtration and adsorption, it can more thoroughly remove various pollutants brought in the process of rainwater washing, and finally reach drinking water standard, to maximize the recycling of rainwater resources.
[0029] Process flow of the present invention is as attached figure 1 As shown, the rainwater forms runoff and flows into the rainwater well of the residential area. The rainwater is pumped into the rainwater raw water tank 1 through the water pump, and then pressurized by the booster pump into the quartz sand filter 2. The quartz sand filter is a common fast filter device. When removing the suspended solids in the storm runoff, when the water containing suspended solid particles flows through the filter material layer, the gaps in the filter material pla...
Embodiment 1
[0033] During a certain rainfall in Beijing, the confluent rainwater was collected in the rainwater wells of the community, and the rainwater was processed through the combined process of advanced treatment of urban storm runoff. The process flow is: raw rainwater tank→quartz sand filter→activated carbon filter→PP filter element→ultrafiltration Membrane module → product water tank, the water output indicators of the process are shown in Table 1.
[0034] The typical index value before and after a certain rainfall rainwater runoff of table 1 is processed by the process of the present invention
[0035]
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