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USACE / NAVFAC / AFCEC / NASA UFGS-46 43 21 (February 2020)
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Preparing Activity: NAVFAC Superseding
UFGS-46 43 21 (
February 2011)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated October 2022
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SECTION TABLE OF CONTENTS
DIVISION 46 - WATER AND WASTEWATER EQUIPMENT
SECTION 46 43 21
CIRCULAR CLARIFIER EQUIPMENT
02/20
PART 1 GENERAL
1.1 REFERENCES
1.2 SUBMITTALS
1.3 ADMINISTRATIVE REQUIREMENTS
1.3.1 Pre-Installation Meetings
1.4 DELIVERY, STORAGE, AND HANDLING
1.5 WARRANTY
PART 2 PRODUCTS
2.1 SYSTEM DESCRIPTION
2.1.1 Circular Clarifier
2.1.1.1 Shop Drawings
2.1.2 Clarifier Mechanism Design Requirements
2.1.2.1 Design
2.2 EQUIPMENT
2.2.1 Sludge Collector Assembly
2.2.1.1 Scraper Arms, Blades & Squeegees
2.2.1.2 Center Drive Cage or Drum
2.2.1.3 Center Shaft
2.2.1.4 Rapid Sludge Removal System & Piping
2.2.2 Drive Assembly
2.2.2.1 Motor
2.2.2.2 Speed Reduction and Turntable Gearing
2.2.2.2.1 Gear Lubrication
2.2.2.3 Gearmotor
2.2.2.4 Turntable Bearing Assembly
2.2.2.5 Drive Assembly Bearings
2.2.2.6 Chain Drives and Belt Drives
2.2.3 Scum Removal
2.2.3.1 Skimmer Assembly
2.2.3.2 Scum Trough
2.2.3.3 Scum Removal Assembly
SECTION 46 43 21 Page 1
