What are the Examples of Mechanical Dewatering Equipments?

A piece of mechanical dewatering equipment separates water and solid materials. Mechanical devices process solids by forcing large amounts of liquid into the dehydrator. The chemicals used in mechanical devices are called chemical conditioners. These chemicals aid the dewatering process by handling the solids properly. EOLDE dewatering equipment is a type of mechanical dewatering equipment. It is used in industries where large amounts of water are needed.


Dewatering centrifuges are machines that separate water from slurries and thicken sludge. Most commonly used for municipal sewage dewatering, centrifuges process millions of gallons per day. Their efficiency greatly depends on the type of sludge to be dewatered. In addition, dewatering centrifuges are incredibly durable and have exceptionally long service lives.

A centrifuge works by accelerating the separation of a sludge stream’s solid and liquid phases. Centrifuges separate sludge into a solid cake and a clear liquid known as the center. The centrifuge’s speed and rotation are controlled through a gearbox. A decanter centrifuge is most common for thickening slurries.

A disk-bowl centrifuge is another type of dewatering machine. It has a bowl with a conical shape and a feed tube. The solids in the liquid flow into the bowl and are displaced over a baffle. Once the liquid is discharged, a skimmer is used to remove any remaining liquid. Once the liquid has been dewatered, the solids fall out of the open bottom of the bowl.

Disk-bowl centrifuges are also popular because of their versatility. The disk-bowl design helps separate immiscible liquids, including emulsions. In food processing, they can be used for dewatering industrial sludges. Centrifuges can separate a wide variety of solids and act as thickening devices. In addition, centrifuges are economical and highly efficient.

Filter presses

Filter presses are a common form of mechanical dewatering equipment. The slurry is pumped under pressure into the chamber, where it passes through a cloth medium, drain-field, and corner discharge ports. Once filtered, the filtrate exits the press through a gravity drain. A primary function of the cloth media is to provide a porous support structure for the filter cake. The sludge that enters the press can be solids or liquids, though larger particles bridge the openings of the cloth medium, reducing its practical size.

Converting a pilot unit into a full-scale production system is straightforward to do. Langley Separation & Process can help you make the transition from a pilot system to a fully-equipped process system. Since pilot presses are nearly identical to production systems, scaling up is simple. In addition, you can test a variety of dewatering techniques and determine which one is most suitable for your specific liquid/solid separation requirements.

Depending on the type of filtration media you’re working with, you can choose from fully automatic or semi-automatic models. Fully automatic filter presses offer uninterrupted operation and provide a high degree of automation. High-speed models allow you to achieve a higher volume per square foot of filter area. High-speed filters are often used for highly filterable products. For example, mining residues and concentrates require high filtration speeds. There are many types of filter presses, one suitable for every application.

Electro osmosis dehydrator (ELODE)

An Electro osmosis dehydrator, also known as an ELODE, is a device for wastewater treatment. It can be attached to any dewatering machine. ELODE’s electrodes separate absorbed and free water from sludge. The result is a dry residual product with a moisture content of thirty to sixty percent wt or forty to seventy percent ds. This dehydrator uses just 0.25 kW of electricity per liter and has a low operating cost.

The method of electroosmosis involves an electric field that dehydrates water-containing materials. The DC electric field creates a low-voltage, high-voltage state, and back-section time, which are all characterized by a specific gradient. As a result, an electrolysis machine typically has a high-level cadre and is highly space-efficient. In addition, it is cheap and stable and can process a wide range of wastes, including liquids and solids.

The ELODE process primarily removes absorbed and free water from sludge. As the water level in sludge is below sixty percent, the electrolysis process will produce a dry final product with less moisture. The ELODE method can also be installed downstream of mechanical dewatering, allowing it to be used in various applications. However, it is not always possible to separate free water from sludge.