What are the advantages of biological rotary table compared with activated sludge process?

Compared with the traditional activated sludge process, the biological turntable process has the following advantages:

1, the treatment efficiency is high, and the effluent quality is good: there are many kinds and high concentrations of microorganisms on the biofilm, and each level has dominant species and genera, and nitrifying bacteria can also grow, which has good nitrogen and phosphorus removal functions; ?

2. Strong impact load resistance: strong adaptability to the change of influent quality and quantity, even if the influent is stopped for a period of time, it will not bring obvious obstacles to the purification function of biofilm; ? Less sludge production: the microbial food chain on the biofilm is long, and the sludge production is less, which is about1/2 of the activated sludge method; ?

3, solid-liquid separation is easy: even if a large number of filamentous bacteria are produced, sludge will not float in the secondary sedimentation tank; ?

4. It can treat low-concentration sewage: if the influent BOD5 is lower than 50-60 mg/L, the flocculation of the activated sludge treatment system will become worse, and the treated water quality will be very low. The biological disc treatment system can achieve good treatment effect, and BOD5 can be reduced to 5-10 mg/L; ?

5. Low power consumption and operating cost: The biological turntable does not need aeration and sludge reflux, which saves energy 1/2 compared with the activated sludge process, and greatly reduces the daily operating cost. ?

6, simple equipment, stable and reliable operation, easy to maintain and manage; There are no problems of biomass regulation and sludge bulking. ?

7. Wide application range: As long as it is organic wastewater with strong biodegradability and is not limited by water quantity and pollution load, this technology can be used.