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Biosolids and Sludge Dewatering Services

Burch Hydro provides mechanical dewatering of municipal biosolids and other liquid sludges using various methods, depending on the type of sludge and its intended use.


Sludge Dewatering

Types of Dewatering Services

Dewatering services can be provided on a temporary, intermittent or permanent basis, depending on the customer’s particular needs.


Listed below are the typical dewatering services offered by Burch Hydro:

Installation/Operation of Permanent Belt Presses or Centrifuges

Burch Hydro will purchase and install new dewatering equipment or will operate your existing dewatering equipment. If new equipment is purchased, ownership of the equipment can be transferred to the customer or can be retained by Burch Hydro through the course of the contract.

Mobile Belt Pressing

1.5 meter belt presses installed on semi-trailers and complete with all auxiliary equipment such as polymer mixing and sludge pumps, can be brought in by Burch Hydro and used on a temporary or intermittent basis to dewater sludge. These units are often used for one time projects, such as digester cleaning, during emergency periods when permanent dewatering equipment has failed, or as an alternate method for handling sludge during seasons when land application is not an option.

Sludge Dewatering Tubes

Certain projects can benefit from the use of sludge dewatering tubes in lieu of dewatering equipment. These are typically small, one-time projects. Liquid sludge is mixed with polymer and pumped into large bags constructed of a special woven fabric that compresses the sludge and allows the water to escape.


Any of these dewatering services can be provided as a stand-alone service, as part of a biosolids management program or in conjunction with other services offered by Burch Hydro.


Sludge Dewatering

Benefits of Sludge Dewatering

Mechanical dewatering of sludge is the most cost effective method of increasing the concentration of solids. The potential benefits of sludge dewatering vary depending on certain characteristics of the sludge and how it must be reused or disposed of.

Decreased Hauling Costs

This benefit is universal for any sludge. The cost of hauling decreases directly with the volume of sludge to be hauled. Therefore, removing any volume of water from the sludge has a direct and significant effect on the cost to transport the material.

Maximizes Plant Storage

For plants with limited space, dewatering sludge can be a huge advantage. Storage of liquid sludge often requires large tanks which quickly consume valuable space. Removing water from the sludge not only reduces the volume of sludge, but allows the sludge to be stacked and piled maximizing the plant’s storage capacity.

Land Application Advantages

Dewatered sludge is an advantage to plants with land application programs. It allows the sludge to be temporarily stored at land application sites, freeing space at the plant for additional storage. And more importantly, it reduces field compaction during land application and is also less likely to cause issues with run-off.

Necessary for Landfill Disposal

For sludge that must be landfilled, dewatering is required. Some landfills offer solidification, but it is extremely costly and only limited volumes of sludge can be accepted each day. Dewatering sludge on-site before being transported to a landfill is vastly cheaper than landfill solidification.

Contact Burch Hydro today to discuss your unique sludge dewatering needs!

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