Sewage processing system and sewage processing method using multiple wetland vegetation communities
A wetland vegetation and wetland technology, applied in the field of water treatment, can solve the problems of single vegetation, unsatisfactory sewage treatment effect, and high operating costs, achieve good nitrogen and phosphorus removal, safe and reliable performance and service functions, and reduce on-site operators. Effect
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Embodiment 1
[0032] This embodiment provides a sewage treatment system utilizing multiple wetland vegetation communities, such as figure 1 As shown, it includes sequentially connected pre-wetland pool 1, grid well 2, regulating pool 3, anaerobic pool 4, anoxic pool 5, aerobic pool 6, sedimentation pool 7, first water quality monitoring well 8, Water inlet pool 9, spiral wetland pool 10, water outlet pool 11, second water quality monitoring well 12. The arrows in the figure indicate the direction of water flow.
[0033] Pre-wetland pool 1, grid well 2, and regulating pool 3 are arranged from high to low; anaerobic pool 4, anoxic pool 5, aerobic pool 6, and sedimentation pool 7 are also arranged from high to low. This stepped design makes each unit have a certain height difference, and gravity can be used to promote the automatic flow of water, thereby reducing the frequency of use of the sewage lift pump and reducing energy consumption.
[0034] The bottom of the pre-wetland pool 1 is pro...
Embodiment 2
[0043] This embodiment provides a sewage treatment method using multiple wetland vegetation communities, including the following steps:
[0044] (1) Introduce sewage into the pre-wetland pool, plant reeds in the pre-wetland pool, fill the bottom with biological matrix materials, and the sewage flows through the roots of the reeds and the surface of the matrix, and then automatically flows into the grid well;
[0045] (2) A grid is arranged in the grid well to trap larger suspended solids or particles in the water body, and the sewage will automatically flow into the regulating tank from the outlet pipe at the bottom of the grid, and the water in the regulating tank will flow into the anaerobic through the sewage lifting pump. pool;
[0046] (3) The content of dissolved oxygen in the anaerobic tank is controlled at about 0.1mg / L. In the anaerobic tank, the refractory high-molecular organic matter in the sewage is transformed into a low-molecular organic matter that is easily de...
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