2026-03-27
Project Overview As urban infrastructure continues to develop in Côte d'Ivoire, Africa, ensuring efficient and reliable wastewater treatment has become a critical priority. To address the challenges of handling grit and solid waste in local municipal wastewater, the project integrated the LSSF Spiral Sand-Water Separator. Manufactured by Nanjing Lanjiang, this equipment plays a vital role in the preliminary treatment phase, ensuring downstream processes remain unimpeded by heavy particulate matter.
The Solution The LSSF Spiral Sand-Water Separator is specifically designed for grit chambers in wastewater treatment plants. Its primary function in the Côte d'Ivoire facility is to efficiently separate sand and water from the mixed liquid discharged by the sedimentation tank.
The system's robust construction comprises a shaftless spiral, quick-install lining, U-shaped groove, water tank, baffle, overflow weir, and an advanced driving device.
How It Works In the Côte d'Ivoire plant, the operation is highly automated and relies on a simple yet effective physical process:
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The sand-water mixture is fed into the top of the water tank at one end of the separator.
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Heavier particles, such as sand, naturally deposit at the bottom of the U-shaped groove.
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Driven by the equipment, the shaftless spiral pushes the deposited sand upward along the inclined bottom of the groove.
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After leaving the liquid surface, the sand is pushed further to thoroughly dehydrate before being discharged from the sand outlet into a collection bucket.
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The separated water flows out through the overflow port and is sent to the plant's intake pool.
Key Advantages for the Côte d'Ivoire Project The selection of Nanjing Lanjiang's LSSF series brings several distinct advantages to the African facility:
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High Efficiency: The system achieves a remarkable separation efficiency of 96% to 98%, effectively removing particles with a diameter of ≥0.2mm.
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Low Maintenance: The adoption of a shaftless spiral means there are no underwater bearings, significantly simplifying maintenance routines in a demanding environment.
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Optimized Design: The equipment features a compact structure and is relatively lightweight, making installation manageable even in complex site conditions.
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Advanced Transmission: It utilizes a shaft-mounted reducer, eliminating the need for a coupling and making alignment during installation highly convenient.
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Operational Safety: The axial position of the spiral is adjustable, making it easy for operators to safely calibrate the clearance between the spiral's tail and the tank wall.
By leveraging the LSSF Spiral Sand-Water Separator, the Côte d'Ivoire wastewater project has successfully optimized its grit removal process, ensuring long-term operational stability and contributing to cleaner water infrastructure in the region.
