Vertical turbines are to be used for flocculation in a water treatment plant with a design flow rate of 75 ML/d (20 MGD) and design temperature of 10 C. Flocculation is to be designed with four parallel trains, and each train is to be made of four stages in series. The total detention time in flocculation is to be 20 min. Determine the following design features for the first stage in each flocculation train: 1. The dimensions of the stage 2. The diameter of the impeller (assume a turbine having three pitched blades with camber, a foil) 3. The water power required to achieve a G of 40 s-1 (the power that must be input to the water through the impeller shaft) 4. The rotational speed At 10 C, the absolute viscosity of water is 1.31 x 10-3 kg/m sand the density of water is 999.7 kg/m³.

Vertical turbines are to be used for flocculation in a water treatment plant with a design flow rate of 75 ML/d (20 MGD) and design temperature of 10 C. Flocculation is to be designed with four parallel trains, and each train is to be made of four stages in series. The total detention time in flocculation is to be 20 min. Determine the following design features for the first stage in each flocculation train: 1. The dimensions of the stage 2. The diameter of the impeller (assume a turbine having three pitched blades with camber, a foil) 3. The water power required to achieve a G of 40 s-1 (the power that must be input to the water through the impeller shaft) 4. The rotational speed At 10 C, the absolute viscosity of water is 1.31 x 10-3 kg/m sand the density of water is 999.7 kg/m³.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Collection Systems

The collection systems form a part of sanitary engineering, which is a sub-branch of civil engineering. It is also known as public health engineering and wastewater engineering. It is a methodology followed to remove and properly dispose of human waste, along with creating systems to provide safe and clean usable water. These measures ensure a hygienic and disease-free community. Sanitary engineering, apart from building sewer disposal units, is also involved in plumbing, fire protection, hydraulics, life safety, environmental protection, information technology, microbiology, pathology, and so on.

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Vertical turbines are to be used for flocculation in a water treatment plant with a design flow rate of 75
ML/d (20 MGD) and design temperature of 10 C. Flocculation is to be designed with four parallel trains,
and each train is to be made of four stages in series. The total detention time in flocculation is to be 20
min. Determine the following design features for the first stage in each flocculation train:
1. The dimensions of the stage
2. The diameter of the impeller (assume a turbine having three pitched blades with camber, a foil)
3. The water power required to achieve a G of 40 s-1 (the power that must be input to the water
through the impeller shaft)
4. The rotational speed
At 10 C, the absolute viscosity of water is 1.31 x 10-3 kg/m sand the density of water is 999.7 kg/m³.
.

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