IV. Wastewater Treatment Technologies Topic IV. 7

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Presentation transcript:

IV. Wastewater Treatment Technologies Topic IV. 7 IV. Wastewater Treatment Technologies Topic IV. 7. Mechanical Wastewater Treatment Facilities - Bar Racks, Grit Chambers, Settling Tanks: Kinds, Structures, Basic Parameters Bar Racks Kinds: Coarse (b = 30 - 120 mm) Fine (b = 16 - 25 mm) Vertical Declined Hand-cleaned Mechanically-cleaned Fixed Removable Rotating Disk Drum Wing Comminutors

Bar Racks: Kinds

Declined Mechanically-cleaned Bar Rack Bar Racks: Structures Declined Mechanically-cleaned Bar Rack

Bar Rack Accommodation Bar Racks: Structures Bar Rack Accommodation

Bar Racks: Basic Parameters a) design scheme б) bars cross sections

Grit Chambers: Kinds Horizontal Vertical Tangential Single Classical Circular Aerated Vertical Tangential Single Combined with grease separating chamber Mechanically-cleaned Hydraulically-cleaned

Grit Chambers: Structures Classical Horizontal Grit Chamber

Grit Chambers: Structures Horizontal Circular Grit Chamber

Grit Chambers: Structures Horizontal Aerated Grit Chamber

Grit Chambers: Basic Parameters Velocities Diagram for the Horizontal Aerated Grit Chamber

Settling Tanks: Kinds I. According to their technological functions Primary settling tanks Secondary clarifiers II. According to their construction Horizontal Radial Vertical Combined with other technological units Imhoff tanks Aerated tanks/secondary clarifiers

Settling Tanks: Structures Horizontal Settling Tank

Settling Tanks: Structures Details of Horizontal Settling Tanks Inlets and Outlets

Settling Tanks: Structures Radial Settling Tank

Settling Tanks: Structures Vertical Settling Tank

Settling Tanks: Structures Imhoff Tank

Settling Tanks: Basic Parameters Settling Kinetics