Tandem type two-stage three-segment aerating biological filter
An aerated biological filter, a series-type technology, is applied in the field of a series-type two-stage three-stage aerated biological filter, which can solve the problems of low contact efficiency between sewage and air, uneven wastewater treatment, secondary pollution, etc. Conducive to biofilm attachment, avoiding direct impact and improving removal efficiency
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[0019] A series two-stage three-stage biological aerated filter pilot plant was established in a factory, and the material was made of organic glass. The inner diameter of the biological aerated filter is 50cm, the thickness is 5cm, and the overall height is 250cm; the bottom supporting layer is 50cm high and is composed of homogeneous quartz sand with a particle size of 20cm; the filler layer in the biological aerated filter I is 100cm high, and the biological aerated filter The filling layer in Pool II is 150cm high and consists of porous homogeneous volcanic rock particles with a particle size of 3 to 5cm. The packing density of the volcanic rock particles is 750-780Kg / m 3 , The porosity is around 82%. In the aeration filter I, an aeration pipe with a diameter of 10 cm is set at a height of 60 cm from the supporting layer, and five aeration holes with an inner diameter of 5 cm are placed at the bottom, and a stainless steel screen is built in to prevent the ...
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