Potato Starch Protein Recovery Decanter Centrifuge Fruit Water Separation Food Industry 12m3/H

The LW460 potato starch protein recovery decanter centrifuge is designed for potato starch factories that need to recover valuable protein from fruit water while protecting rivers and municipal treatment plants from high organic loads. When potatoes are rasped and washed, the starch milk is separated from the so called fruit water, which contains soluble protein, amino acids and fine pulp. This stream has an extremely high biological oxygen demand and represents both an environmental challenge and a business opportunity. The LW460 decanter separates the suspended solids and coagulated protein from the fruit water, producing a protein rich cake that can be dried and sold as animal feed, while the clarified water is recycled to the starch line or treated at a fraction of the original cost.

Potato processing is seasonal and operates around the clock during the campaign, so reliability is the first requirement. The LW460 combines a 460 mm bowl with a robust 45 kW main drive to handle the high throughput typical of modern starch plants. The machine is built with food grade materials in the product zone, and its scroll conveyor is protected against the abrasive silica that is naturally present in potato pulp. Differential speed control allows the operator to maximize protein capture when fruit water quality fluctuates, and the compact skid layout simplifies installation inside existing starch factories where space is often tight.

• Protein rich cake recovery: captures coagulated potato protein and fine pulp, creating a saleable feed ingredient and reducing effluent load.
• High throughput design: 12 m3/H nominal capacity matches the fruit water output of medium to large potato starch lines.
• Food grade construction: product contact parts in SS304 stainless steel satisfy food processing hygiene expectations.
• Abrasion resistant conveyor: hard faced scroll and wear liners extend service life in sandy potato processing water.
• Water recycling benefit: clarified fruit water can be reused for washing and transport, cutting fresh water consumption dramatically.
• Campaign proven reliability: heavy duty bearings and continuous lubrication support 24 hour operation through the harvest season.

Beyond potato starch, the LW460 is used for sweet potato and cassava starch processing, where the same fruit water problem exists. It also recovers protein and fiber from vegetable processing wastewater, dewaters pulp from root crop peeling lines and thickens sludge in food factory effluent treatment. The clarified water can be further polished by flotation or biological treatment to meet discharge standards, significantly reducing the size and cost of downstream wastewater infrastructure.

Each machine is fully assembled and test run in our factory, with vibration and temperature readings recorded in the test certificate. Food contact surfaces are cleaned and protected with food grade preservative before packing. The LW460 ships in a reinforced wooden case or steel frame container, complete with installation drawings, electrical diagrams and an operation and maintenance manual. We provide 12 months warranty and rapid spare parts dispatch, and our service team can supervise installation during the critical weeks before the potato campaign starts.