What is the effect of increased tension on a belt filter press belt?

Increasing the tension on a belt filter press belt is significant because it enhances the pressure applied to the sludge sitting between the two belts. This greater pressure helps squeeze more water out of the sludge, resulting in a drier cake. The operational efficiency of a belt filter press relies on effectively removing moisture from the solid waste material being processed, and increased tension facilitates better dewatering.

The other options do not align with the effect of increased tension: while longer belt life could be an added benefit of improved tension, it primarily serves the function of enhancing dewatering. Higher hydraulic loading typically refers to the volume of water being treated, which does not directly relate to increased tension. Lastly, increased tension generally does not lead to decreased filter efficiency; instead, it is designed to improve the overall performance and efficiency of the dewatering process. This illustrates why the outcome of producing a dryer cake is the most accurate response to the question regarding the effects of increased tension on a belt filter press belt.