Anti-blocking denitrification wetland structure and treatment method thereof
A wetland and denitrification technology, applied in the direction of sedimentation treatment, sustainable biological treatment, chemical instruments and methods, etc., to achieve the effects of low power, good effluent quality, and structural design to avoid
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Embodiment 1
[0036] Embodiment one, such as figure 1 and figure 2 As shown, a wetland structure for anti-blocking and denitrification includes an upflow treatment area 1 and a swirl treatment area 2, and the swirl treatment area 2 surrounds the upflow treatment area 1;
[0037] The upflow treatment area 1 is a hollow cylinder, and a wetland matrix 13 is filled in the upflow treatment area 1 and wetland plants are planted; a water distribution pipe 11 is laid below the upflow treatment area 1, and the water distribution pipe 11 The water inlet is connected to the cyclone treatment area 2; a return pipe 9 is arranged on the upper part of the upflow treatment area 1, and the return pipe 9 is connected to the top of the cyclone treatment area 2; the upper part of the upflow treatment area 1 An outlet pipe 5 is also provided, and the return pipe 9 and the outlet pipe 5 are provided with corresponding control valves; the return pipe 9 is arranged below the design water level and above the wetl...
Embodiment 2
[0039] Embodiment 2, on the basis of Embodiment 1, wetland plants are planted above the upflow treatment area 1 and opened to the air; the diameter of the upflow treatment area 1 is 3-10m, and the design water level of the wetland is 1.0-2.5m , the total effective volume is 7-200m 3 The wetland matrix 13 filled in the upflow treatment area 1 includes pebbles, gravel and soil, the particle size of the wetland matrix 13 is 0.1-5cm, and the wetland matrix 13 is a homogeneous matrix or a graded assembly.
[0040] The diameter of the return pipe 9 is 50-150mm, and the installation height of the water inlet of the return pipe 9 should be above the wetland substrate 13 and 2-3cm below the design water level of the wetland. A return valve 10 is installed on the return pipe 9, and the return pipe 9 The water outlet is located above the water outlet of the water inlet pipe 3 in the cyclone treatment area 2, and the direction of the water outlet of the return pipe 9 should be vertically ...
Embodiment 3
[0042] Embodiment three, on the basis of embodiment one, the height of the cyclone treatment area 2 is 0.3-1.0m, and the inclination angle of the hypotenuse of the inverted triangle or right trapezoid of the cyclone treatment area (2) is 45- 75 o , The volume ratio of the swirl treatment area 2 to the upflow treatment area 1 is 1:6-1:3; the swirl treatment area 2 is filled with gravel or pebbles.
[0043] The water inlet of the water distribution pipe 11 is located above the end of the swirling flow treatment area 2, the pipe diameter of the water distribution pipe 11 is 40-120mm, and the water outlet holes with an aperture of 10-20mm are uniformly arranged on the water distribution pipe 11, and the water outlet holes The entire upflow treatment area 1 is covered on a plane.
[0044] The water inlet pipe 3 enters water tangentially along the direction of the swirling flow, and has a pipe diameter of 50-150 mm. A water inlet valve 4 is installed on the water inlet pipe 3 .
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