Compared with biological filter, what are the characteristics of biological turntable?

The process flow of biological rotary table, biological filter and biological contact oxidation tank is similar, and they all have the advantages of biofilm method: there is no need to return sludge. Compared with biological rotary table process, biological filter and biological contact oxidation tank, they all have their own characteristics:

1, the specific surface area of the biological turntable is large, the wastewater contact time is longer than that of the biological filtration method and the biological contact oxidation tank, the wastewater treatment efficiency is high, and the filter material is not easily blocked;

2. There is an alternating process of "oxygen enrichment-anoxia" during the operation of the biological turntable, which can be used for biological nitrogen removal of wastewater;

3. The operation and management cost of biological turntable is the lowest, but the construction cost is also lower than that of biological filter and the operation cost is lower than that of biological contact oxidation tank. Although it covers a large area, it still has advantages in the long-term benefit;

4. Although the biological turntable is greatly affected by temperature, there are mature protective measures: for example, adding a cover (usually made of glass fiber) on the turntable unit can protect the equipment from bad weather, freezing and sun exposure [2 1], and at the same time, it can control the odor generated by the biological turntable. To sum up, the biological turntable has the best domestic sewage treatment efficiency and comprehensive economic benefits. So this design is recommended.

Process characteristics of biological rotary table: In addition to the same characteristics as biofilm method, it has strong adaptability to water quality and quantity, and has many biological phases, and can treat wastewater with a wide range of concentrations.