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Author: Mike Wastewater Treatment Engineer Water Treatment Expert Time: July 27, 2026 Introduction: I'm Mike. I've been deeply engaged in the field of wastewater treatment and environmental protection equipment for a long time, with extensive front-line experience. I focus on engineering implementation and operation optimization, sharing practical and applicable industry insights. |
Definition of Submersible Sludge Return Pump
A Submersible Sludge Return Pump is a specialized submersible pumping device designed for wastewater treatment systems. It is mainly used to transfer sludge mixture or treated water within the process tanks through continuous underwater operation.
With a robust hydraulic structure and reliable submersible motor design, it can operate stably in various wastewater conditions, including mediums with pH values from 3 to 12 and liquid density up to 1150 kg/m³.
Function of Submersible Sludge Return Pump
The main function of a Submersible Sludge Return Pump is to provide continuous circulation and transfer of sludge in biological treatment processes. It helps maintain uniform sludge distribution, improves hydraulic circulation inside the tank, and supports stable operation of wastewater treatment systems.
The pump is designed for long-term submerged operation with reliable performance under a diving depth of up to 20 meters, ensuring efficient sludge transportation and process stability.
Installation Position of Submersible Sludge Return Pump
The sludge return pump is installed inside the wastewater treatment tank and operates under fully submerged conditions. It is usually installed at the bottom of the tank and connected with the return pipeline to achieve efficient sludge circulation.
The pump is equipped with a guide rail installation system, including guide bars, support seat, and lifting system.
Main Installation Components
Submersible Pump Unit: Installed at the bottom of the tank for sludge transfer.
Guide Rail System: Guides the pump to the correct operating position.
Support Seat: Fixes and supports the pump during operation.
Through-wall Pipe: Connects the pump outlet with the external pipeline.
Lifting System: Used for pump installation, removal, and maintenance.
Applicable Wastewater Treatment Processes for Submersible Sludge Return Pump
MBR Wastewater Treatment System
Municipal Sewage Treatment Plant
Industrial Wastewater Treatment System
Sludge Recirculation and Internal Circulation System
A/O and A²/O Biological Nitrogen Removal Process
