Rectangular Clarifier – Envirex® Chain & Scraper
Evoqua – Rectangular Clarifier – Envirex® Chain & Scraper system provides maximum sludge concentrations and floating solid removal. The system is comprised of light-weight components, which makes installation easy and simplifies maintenance. Flights mounted on two parallel strands of metallic or non-metallic chain scrape the settled solids along the tank floor to sludge hoppers. On the return run, the flights can skim the surface and concentrate the floating material at a scum removal device. Applications include:
- Water Treatment Plants
- Chemical sludge removal
- Pre-sedimentation
- Wastewater Treatment Plants
- Primary & secondary clarification
- DAF thickeners
- Industrial Treatment
- Clarification
- Oil/water separation
Video: Rehab Solutions
Technical Sales Manager, Dennis Kaiser, describes Evoqua’s retrofit/rehab solutions for chain and scrapers, including several new components designed for easy installation, replacement and long life.
Chain and Scraper Components
Flights
- Channel Flights
- Sigma Plus Flights
- Diamond Flights
- Flight Extensions
Collector Chains and Tools
- NCS720S Non-Metallic Collector Chain
- HS730 High Strength Loop Chain
- ENV715 Stainless Steel Collector Chain
- ZipTool™ Chain Assembly Tool
Drive Chains
- NH78 Non-Metallic Drive Chain
- HS360 Non-Metallic High Strength Drive Chain
- ENV78 Stainless Steel Drive Chain
Sprockets
- Drive Sprockets
- Shear Pin Hubs
- Maintenance Free Stainless Steel Shear Pin Hubs
- Cast Iron Shear Pin Hubs
- Driven Sprockets
- Non-Metallic
- Cast Iron
- Collector Sprockets
Shafts
- Metallic and Non-Metallic FRP Headshafts
- Full Tank Width Shafts (live or static)
- Stub Shafts
Bearings
- Split Wall Bearing Housing with Split Polyurethane Hub Ball
- Split Wall Bearing Housing with Polyurethane Hub Ball
- Sprocket Sleeve Bearings
Return tracks and supports
- FRP or Stainless Steel Return Tracks
- Non-Metallic Wall Supports
- Steel or Stainless Steel Wall Supports
Wear Items
- Wear Strips – UHMW Polyethylene
- Standard with convex washers
- Floor – C-Style Wear Strip (optional)
- Return Tracks – C-Style Wear Strip (optional)
- Wear Shoes – UHMW Polyethylene (optional polyurethane)
Cross collectors
- Chain and Flight
- Screw Conveyor
- Torque Tube Drive
- Chain Drive
Scum Skimming
- Scum Pipes
- Lever Operated – Manual
- Worm Gear – Manual or Motorized
- Rack and Pinion – Manual or Motorized
- Power Skimmers – with or without Steel Trough
- Helical Skimmers – with or without Steel Trough
- Surface Skimmers
System Monitoring
- Flight and Sprocket Monitoring
