Bridge scraper PVA

Overview
PVA travelling bridges for grease and grit removal are reciprocating bridge units designed for simultaneous separation and collection of floating grease/scum and settled grit in rectangular tanks used in municipal and industrial wastewater treatment. The bridge runs on two motorized carriages and carries a surface scraper and a submerged pump; a central gearbox drives the reciprocating motion. An air injection system (not supplied) can be installed in the grit channel to enhance separation.

Key functions

• Surface grease/scum removal
• Grit/sand removal and transport to collection hopper
• Reciprocating travelling bridge operation (forward/backward passes)
• Integration with existing rectangular tanks

Applications

• Municipal wastewater treatment plants
• Industrial wastewater treatment
• Rectangular grit chambers and desludging lines

Features

• Designed for tanks up to 8 m wide and 50 m long
• Surface scum removal unit and bottom scraper
• Submerged pump for grit transport
• Festoon power cable and on-board control panel
• Construction materials: hot-dip galvanized carbon steel / AISI 304L / AISI 316L

Advantages

• Rapid installation and straightforward retrofit
• Combined removal of floating grease and settled grit in one unit
• Accessible components for maintenance

Options

• Airlift grit suction
• Cable holding chain (festoon alternative)
• Rail travel instead of wheel-mounted carriages
• Material options: AISI 304L / AISI 316L / painted finish
• Alternative voltages/frequencies and motor protection classes

Accessories

• Stainless steel baffle wall between grease and grit channels

Technical specifications

• Model / Series: PVA
• Product type: Travelling bridge for grease and grit removal
• Maximum tank dimensions: up to 8 m width and 50 m length
• Main components: movable bridge, two motorized carriages, surface scraper, bottom scraper, submerged pump, central gearbox
• Operation: reciprocating travel — bottom scraper conveys grit to hopper; surface scraper collects scum
• Air injection system: optional (not supplied)
• Materials: hot-dip galvanized carbon steel, AISI 304L, AISI 316L
• Control: on-board control panel; festoon power supply
• Manufacturer / Brand: WAMGROUP