In direct filtration water treatment plants, which step of conventional treatment is excluded?

In direct filtration water treatment plants, which step of conventional treatment is excluded?

• A. Filtration
• B. Sedimentation
• C. Coagulation
• D. Mixing

Answer: (B)

In direct filtration water treatment plants, the step of conventional treatment that is excluded is sedimentation. In conventional water treatment, sedimentation follows coagulation and mixing, allowing particulates to settle out of the water before filtration. However, in direct filtration, the process combines coagulation, mixing, and filtration into one streamlined operation. This eliminates the need for a separate sedimentation step, which is typically used to manage larger particles that can settle out of the water over time. The direct filtration approach is particularly advantageous in situations where the water source is relatively clean, as it simplifies the treatment process and can lead to more efficient operation without the extra time required for sedimentation.

In direct filtration water treatment plants, the step of conventional treatment that is excluded is sedimentation. In conventional water treatment, sedimentation follows coagulation and mixing, allowing particulates to settle out of the water before filtration. However, in direct filtration, the process combines coagulation, mixing, and filtration into one streamlined operation. This eliminates the need for a separate sedimentation step, which is typically used to manage larger particles that can settle out of the water over time. The direct filtration approach is particularly advantageous in situations where the water source is relatively clean, as it simplifies the treatment process and can lead to more efficient operation without the extra time required for sedimentation.