Technical Secondary Circular Bridge Clarifier mechanism

• Diameter (DIA): 9 meters

• Side Water Depth (SWD): 3 meters

• Freeboard (FB): 0.5 meters

Design range:

• Average flow: 8–15 m³/m²/day

• Peak flow: 25–35 m³/m²/day

• Average SOR: 10 m³/m²/day

• Peak SOR: 30 m³/m²/day

Flowrate Range

Condition	Flowrate (m³/day)	Flowrate (MLD)
Average Load	~636	~0.64 MLD
Peak Load	~1908	~1.91 MLD

Technical Specifications.

Parameters

Item	Specification
Type	Circular Bridge Clarifier
Application	Secondary Clarification (STP/ETP)
Diameter	9 meters
Side Water Depth (SWD)	3 meters
Freeboard	0.5 meters
Total Depth	3.5 meters
Material of Construction	Mild Steel Epoxy Painted (MSEP)
Drive Type	Central driven
Capacity	190 m³

Components

Component	Specification
Bridge Structure	Full-span truss beam, MS 8–10 mm thick
Scraper Arms	MS, 6 mm thick, spiral blade type
Center Pier	MS, 10 mm thick, load-bearing
Bottom Slope	1:12 to 1:20 toward sludge pit
Scum Removal	Scum box with lever and flushing port
Overflow Weir	V-notch adjustable, SS 304

Drive System

Component	Specification
Motor Power	0.25–0.75 HP
Gearbox Rating	0.25–0.75 kW
Operating Speed	~1 RPM
Electrical Supply	220/380 V, 50 Hz
Torque Arm	Provided for overload protection
Bearings	Sealed type, low maintenance

Structural MS Thickness

Component	MS Thickness (mm)
Side Wall Shell	6 mm
Bottom Plate	8 mm
Bridge Structure	8–10 mm (with stiffeners)
Scraper Arms	6 mm
Center Pier	10 mm

Richa Environmental is the manufacturer, supplier and exporter of Bridge clarifier.