What is the removal rate of SS COD BOD by grid+oil separation tank+advection sedimentation tank+regulating tank+air flotation tank? I want to calculate the design of ABR

The removal rate of the grid for the above three kinds is not very large, and only larger solids can be removed.

The main function of the grease trap is to remove the floating oil in the water. For your water quality, about 20% of the above three substances can be removed. It is best to do an experiment specially, and the measured data is more accurate.

In fact, the sedimentation tank is more important than the SS part of water. It can remove more than 60% suspended matter. For COD and BOD, it is estimated to be around 10-20%. Accurate data must be tested.

Adjusting the pool has no effect on the above three data.

SS/COD/BOD can remove about 40% (mainly to remove the smaller substances left in front).

The overall removal rate of the above processes can reach about 60%.

This is only a rough estimate. If you want to get accurate data, you must carry out experiments.

These are physical and chemical methods to remove pollutants, which can only be used as pretreatment processes, and biochemical processes must be adopted to meet the discharge standards. At the same time, the above processes can also be replaced or optimized by other processes.

I hope I can help you and wish you an early completion of your graduation project (if conditions permit, experiments are the best foundation and you will learn a lot).