Powerless-aeration biological filtering bed
An ecological filter bed, power technology, applied in sustainable biological treatment, aerobic process treatment and other directions, can solve the problems of high application and maintenance costs, increased water and air contact, limited application range, etc., to improve the dissolved oxygen in effluent. , reducing the content of organic matter, the effect of wide adaptability
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[0023] Example 1:
[0024] A kind of unpowered aeration ecological filter bed, its composition schematic diagram is as follows figure 1 As shown in the figure, the unpowered aerated ecological filter bed used for the simulation experiment is mainly composed of two parts.
[0025] 1. The vertical sewage receiving pipe is composed of a thick-walled PVC pipe with a height of 1.2 m placed vertically, the bottom of which is tightly connected with the simulated sewage outlet. The remaining natural drop is lifted to the top of the vertical PVC pipe, and the water outlet pipe connected from the top side wall of the sewage pipe is discharged into the ecological filter bed.
[0026] 2. The trial-produced multi-layer ecological filter bed consists of 3 layers, each layer is composed of a PVC tray with a length of 1 m, a width of 0.8 m, a circular uniform fine hole with a diameter of 1 cm at the bottom, and a height of about 5 cm at the edge. The PVC tray is layered Fixed on stainless ...
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[0028] Example 2:
[0029] An application experiment of an unpowered aeration ecological filter bed was carried out at a sewage outlet of a river in the suburbs of Hangzhou. The average flow of the sewage at the outlet was about 380 L / min, the dissolved oxygen in the water was 2.4 mg / L, and the COD MN It is about 138 mg / L, and it is measured through experiments that the effective height of the sewage from the sewage outlet is about 1.3 m lifted by the vertical sewage receiving pipe.
[0030] According to the actual data, the vertical sewage receiving pipe of the unpowered aeration ecological filter bed suitable for the sewage outlet is 1.25 m high, and the ecological filter bed is 3 layers, each layer is 1 m long, 0.75 m wide, and the bottom has a diameter of 0.8 It is composed of a PVC tray with a circular uniform hole of 1 cm and an edge height of about 6 cm. The PVC tray is fixed on a stainless steel bracket in layers, the top layer and the second layer are separated by 35 ...
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