Project Overview
At a municipal wastewater treatment plant, a ZK LW series decanter centrifuge was installed to enhance the sludge dewatering circuit. Operating downstream of aeration and thickening processes, the unit dewaters biological sludge conditioned with a polymer flocculant. The system consistently achieves high cake dryness and produces a clear centrate suitable for return to the headworks, supporting the plant's environmental compliance and cost-reduction targets as part of the overall treatment process.
- Feed characteristics: biological sludge after secondary clarification, flocculated with polymer
- Objective: reduce sludge hauling/landfill cost and improve centrate clarity
- Solution: ZK LW series decanter with optimized scroll design and wear protection
System Configuration
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Polymer Dosing & Mixing
Automated polymer preparation and dosing ensures consistent flocculation for stable solids capture and cake dryness.
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ZK LW Series Decanter
Stainless steel bowl and scroll with wear protection at feed zone and discharge; differential speed control for dryness optimization.
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PLC Automation
Integrated PLC/HMI monitors torque, vibration, flow, and differential speed for hands-off, continuous operation.
Performance Highlights
- Stable operation with low vibration and noise
- Efficient solids capture with clear centrate
- Reduced polymer consumption through optimized feed zone design
- Easy maintenance and quick wear-part replacement
On-site Images & Videos
