When one is looking for their sludge dewatering choices, there is no doubt that there will be some options. This is the process of separating solid and liquid components that come with the sludge waste. The process aims at making the sludge easier and also more cost-effective to transport and dispose of. Various industries, as well as municipalities, choose to invest in sludge dewatering as one of the steps to meet waste minimization and sustainability aims. Other options that can be used to handle sludge dewatering include plate and frame filter press.
Compared to other technologies used to handle sludge dewatering, belt press filters are considered the most beneficial, especially in the case of continuous operation. Typically, a belt press will produce between 18% and 25% solids by weight of the cake. The belt press works by removing sludge onto two different dewatering belts. The freestanding water molecules are isolated from the mud by gravity, where they are collected by a trough. Next, the solidified sludge is compressed between two belt filters and squeezed under rollers to force any excess water from the muck. Finally, the sludge will be scrapped off the belt where it is collected in a bin while the water content will be transferred into a water system where it is processed. The fact that a belt press performs a continuous action makes it the most-effective option for high-volume waste streams. In most cases, the belt press systems are used in dewatering paper mill sludge, river silt, and in municipal wastewater treatment plants.
There are two primary choices when one is in the market to purchase a belt press. One can decide to buy a new belt press, or you can choose to purchase a used one. In most cases, investing in new equipment will give you the chance to benefit from new technology and design. One is also likely to get a warranty from the manufacturers if they choose to invest in new equipment. However, the major downside of purchasing a new belt press is a large amount of capital needed.
One of the best reasons to consider finding a used belt press to purchase is the fact that this will be cost-efficient. Opting to purchase new sludge dewatering equipment will undoubtedly cost you more when compared to purchasing a piece of used equipment. Whenever a belt press has been purchased, it is likely to see the value decrease by an estimated 30%-50% within one year. When you buy a used belt press, it will be a chance to get an effective system. Used belt presses can be as effective as new ones, but you are purchasing them at a lower cost.
It is also advisable to consider purchasing used belt press, considering that it tends to hold its value. When a belt press is well maintained, it will hold its value, though it might depreciate. If one needs to resell it, they are likely to get close to what they pay for the used belt press, especially when selling at the right time, to a market with high demand.