Dewatering Solution for Potato Waste – Ireland

Client Background

A engineering firm in Ireland approached us seeking a dewatering solution for food waste generated during potato processing. The feed material consists of a mixture of potato peels and potato starch, both present simultaneously after peeling.

Challenge

Potato peels and starch behave very differently in dewatering. Peels are fibrous and hold structural integrity, while starch is liquid before drying and tends to form a sticky paste. Without proper understanding, equipment selection could easily go wrong, leading to poor solid-liquid separation or frequent clogging.

Our Assessment

After reviewing the client's video, we confirmed that the peels are shredded into small particles rather than large sheets. This key detail allowed us to accurately evaluate the material's dewatering characteristics and avoid mis-specification.

Proposed Solution – Model 260 Press

We recommended our Model 260 screw press, specifically designed for organic waste with mixed consistency.
One of the standout features of this model is its variable-pitch screw design. The screw diameter gradually increases along the shaft, creating progressive compression. As material moves forward, the decreasing void volume applies gentle but increasing pressure, efficiently squeezing out moisture while reducing the risk of blockage. This design also ensures continuous operation with minimal maintenance, making it ideal for variable feed conditions like potato peel-starch mixtures.

Throughput

With an estimated processing volume of 4–5 tons per week and an 8-hour daily operation, the Model 260 easily handles the required capacity, offering reliable performance and consistent cake dryness.

Visuals
Photo 1: Screw PressPhoto 2: Inner Screw Press