A kind of artificial wetland water purification method
A technology for water purification and constructed wetlands, applied in chemical instruments and methods, multi-stage water/sewage treatment, biological water/sewage treatment, etc. The effect of backflow, promoting efficiency improvement, and improving reoxygenation efficiency
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Embodiment 1
[0042] This embodiment provides a method for purifying water quality in constructed wetlands, using such as Figure 1-2 The technological process of the constructed wetland system shown is:
[0043] After the sewage to be treated is settled and filtered by the trash rack, the sewage is lifted by the water inlet pipe 11 and the water inlet pump to the water inlet adjustment tank 12, mixed with the water flow drawn back from the bottom of the secondary wetland by the return pump 33, and flows into the primary wetland through the pipeline. In the first-grade wetland, the distribution ditch formed by large stones infiltrates vertically, and is filtered and purified by the wetland medium filler. The water level regulating pipe 31 and the water outlet control valve 32 control the highest water level of the water outlet, the lowest water level and the water outlet flow.
[0044] The outlet water from the primary wetland is regulated by the regulating well, and then distributed evenl...
experiment example
[0073] Use the above specific wetland system for rural domestic sewage treatment, specific operating parameters: daily treatment flow rate 30m 3 , wetland effective area 150m 2 , The intermittent operation cycle is 3 times a day for 8 hours each time, and the time for each water inlet and synchronous return is 3 hours. The treatment effect is shown in the following table: unit (mg / L),
[0074] COD NH 3 -N
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