The efficiency of sediment removal in a continuous sedimentation tank...
Sedimentation efficiency does not depend on the tank depth. If the forward velocity is low enough so that the settled material does not re-suspend from the tank floor, the area is still the main parameter when designing a settling basin or clarifier, taking care that the depth is not too low.
Hence, the correct option is (D)
The efficiency of sediment removal in a continuous sedimentation tank...
Efficiency of Sediment Removal in Continuous Sedimentation Tank
Continuous sedimentation tanks are used for the removal of suspended solids from wastewater. The efficiency of sediment removal in a continuous sedimentation tank depends on several factors. Let's discuss them below.
Discharge through the Tank
The discharge through the tank is an important factor that affects the efficiency of sediment removal. The flow rate of the wastewater should be such that the particles have enough time to settle down to the bottom of the tank. If the flow rate is too high, the particles may not settle down, and the efficiency of sediment removal will be reduced.
Width of the Tank
The width of the tank also affects the efficiency of sediment removal. The width of the tank should be such that the particles have enough space to settle down. If the tank is too narrow, the particles may not settle down properly, and the efficiency of sediment removal will be reduced.
Length of the Tank
The length of the tank is another important factor that affects the efficiency of sediment removal. The length of the tank should be such that the particles have enough time to settle down. If the tank is too short, the particles may not settle down properly, and the efficiency of sediment removal will be reduced.
Depth of the Tank
The depth of the tank does not affect the efficiency of sediment removal. However, the depth of the tank is important for the capacity of the tank. The depth of the tank should be such that it can accommodate the required volume of wastewater.
Conclusion
In conclusion, the efficiency of sediment removal in a continuous sedimentation tank depends on the discharge through the tank, width of the tank, and length of the tank. The depth of the tank does not affect the efficiency of sediment removal.