Tank-Bottom Oil Sludge Treatment with LWS250x1025C Three-Phase Decanter
One Decanter and One Polymer Dosing Unit for Continuous Oil-Water-Solid Separation
Project Background
The customer is a specialized oil sludge treatment company handling tank-bottom sludge from crude and fuel oil storage tanks. The project was designed around one LWS250x1025C three-phase decanter centrifuge and one polymer flocculant dosing package.
The engineering target was to keep separation stable under fluctuating feed properties and to provide a practical operation route for continuous recovery and disposal management.
Customer Pain Points
- Tank-bottom sludge composition changes by batch, with varying free oil, emulsified oil, water, and fine solids content.
- Without proper conditioning and decanter control, phase split quality can drift, increasing downstream treatment load.
- The customer required a compact skid-compatible setup with straightforward daily operation and maintenance access.
- Single-line projects need stable startup and shutdown behavior to avoid repeated flushing and unnecessary downtime.
Process Configuration
The sludge stream is pre-conditioned with polymer in the dosing unit before entering the decanter separation stage. The LWS250x1025C then performs continuous three-phase separation into oil phase, aqueous phase, and solid phase in one process step.
On-Site System Scope
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LWS250x1025C Three-Phase Decanter
Core separation machine for continuous splitting of oil, water, and solids in tank-bottom oily sludge service.
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Polymer Flocculant Dosing Unit
Supports feed conditioning to improve particle aggregation and help maintain stable separation quality during feed fluctuations.
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Integrated Commissioning Layout
Field arrangement keeps equipment and utility interfaces concentrated in one operation area for routine inspection and shift handover.
Project Snapshot
- Customer Type Oil Sludge Treatment Company
- Feed Material Tank-Bottom Oil Sludge
- Decanter Model LWS250x1025C
- Decanter Type Three-Phase Horizontal Decanter
- Auxiliary Unit Polymer Dosing System
- Separation Duty Oil / Water / Solids
- Operation Mode Continuous Commissioning Operation
Site Photos and Commissioning Video
The project records include the equipment arrangement and the commissioning-stage machine condition. They show a complete three-phase decanter line with polymer dosing support for tank-bottom sludge treatment.
Application Results
- Process Match: The installed configuration aligns with tank-bottom oil sludge treatment requirements by combining chemical conditioning and three-phase mechanical separation.
- Continuous Operation: The line demonstrates continuous feed and discharge behavior suitable for commissioning and routine operation scheduling.
- Clear Phase Routing: Oil, aqueous liquid, and solids have independent discharge paths, which simplifies downstream handling and monitoring.
- Operational Practicality: The field layout supports operator inspection, adjustment of dosing and machine settings, and normal maintenance access.
Engineering Review Notes
Technical Validity of Configuration
For tank-bottom oily sludge, the combination of polymer conditioning and a three-phase decanter is an industry-standard route to improve separation stability when feed properties fluctuate. This project follows that practical process logic.
Scope of Published Results
This case page reports verified configuration and on-site operation observations only. It intentionally avoids publishing unconfirmed numerical KPIs from the customer side to keep technical communication accurate.
Procurement and Project Relevance
The single-machine plus dosing-unit architecture is suitable for pilot-scale to medium-throughput projects where compact layout, controlled commissioning risk, and straightforward operations are key decision factors.
Implementation Reminder
Final performance in oil sludge duty depends on feed heating condition, emulsion level, solids size distribution, and dosing optimization. Site acceptance should always be confirmed with commissioning records and sampled phase data.
