By Alicia Kadar and Westyn Bennington
Transporting dewatered sludge, or “cake”, can be a considerable challenge, often becoming quite frustrating over time. Most dewatering applications require a method to move the dewatered material to another location for disposal, drying, or further processing. To accomplish this, a system must be used to move cake from Point A to Point B. This is typically handled by pumps or conveyors.
A closer look at the two groups reveals distinct differences in space requirements and cost. While the products within each category may differ, several striking features capture attention and set them apart.
For cake installations, the most common conveyor systems often depend on maintaining low angles for elevation changes, or require uninterrupted runs to seamlessly transport material to the intended destinations. This requirement can consume substantial floor space, whether for the conveyor itself, or the support structures needed to elevate the device off the ground. When confronted with the challenge of significant elevation changes, conveyors must be installed at considerable distances, complicating their efficiency and footprint.
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In contrast, pump piping can exit the pump and seamlessly rise vertically when needed, allowing for a clean overhead installation. This innovative approach keeps the floor space uncluttered, leaving ample room for additional equipment, or for convenient movement throughout the area. Pumps require only the footprint of the unit, making them a more space-efficient choice and enhancing the overall flow of operations.
Conveyor systems often feature open areas that let odours escape, leading to increased housekeeping needs. For instance, an overstuffed auger system can push material out from beneath thin covers, while belt conveyors may spill contents by turning upside down throughout their travel.
Pumps with sealed piping systems can effectively mitigate odour concerns, creating a cleaner and more efficient environment. In outdoor installations, the closed pumping system prevents rehydration from rainwater, maintaining the low water content achieved through dewatering.
The cost of a system can vary significantly based on factors such as travel distance, elevation changes, and the type of product chosen. For straightforward, short runs without turns, conveyors often provide a more economical solution. However, for larger setups, a pump system might prove to be the more cost-effective choice, particularly when dealing with elevation changes or intricate turns.
Unlike conveyors, which require a new drive system for each change in direction, pump pricing is straightforward. It is calculated on a price per volume at a given pressure. It’s essential to note that while conveyor systems can be efficient, their cost rises with increased length.
The distinctions between these two groups are significant and worth exploring. Pumps offer unique advantages particularly when compared to conveyors. Within the pump category, PC pumps offer distinct benefits over piston pumps, including integrated feed augers, lower pressure piping requirements, pulsation free operation, lower maintenance requirements, and lower cost.
Moreover, the realm of PC pump manufacturers is diverse, each bringing unique qualities and innovations to the table. It’s important to explore what sets different PC pump manufacturers apart, highlighting their innovations and strengths in this competitive landscape.
Alicia Kadar and Westyn Bennington are with Ingersoll Rand Inc.
Email: alicia.kadar@irco.com, or westyn.bennington@irco.com
