Selected Products for Sludge Reduction, Conveyance, & Storage Systems

Sludge Reduction

Solids reduction system, the destruction of biological solids is accomplished through an interchange recycle flow between the aerobic activated sludge process and a specially controlled sidestream bioreactor. This technology, which has been proven in many facilities of various sizes and applications, can be used for new plant designs or retrofitted into existing sites

Sludge Storage Silos

Sludge storage silos are used to temporarily house biosolids prior to discharge into a truck, or prior to being pumped to a different location. Sludge storage requires an effective way to empty the silos in such a manner that the receiving truck can be loaded accurately and without spillage. Utilizing circular discharge or diamond shaped bottom gates or discharge mechanisms to help control the flow out of the silo. Placing the silos on load cells insures that the truck receives a precise load.

Cake Pumps

The concept of using a progressive cavity pump to transfer dewatered biosolids, commonly called sludge cake, is not new. However, the designs of the pumps used have evolved to increase their utility and reliability. Open hopper cake pumps can transport extremely viscous products and municipal sludge with over 45% solids. They have been used under belt presses, centrifuges and screw presses. Using pumps to convey sludge cake offers numerous advantages over using conveyors for the same purpose . Pumps can move cake through vertical sections of pipe and they consume much less space in a building than a conveyor that is limited in its degree of incline. Pumping dewatered sludge cake in a pipe is also much cleaner , reduces odors and eliminates bearings and other wear components associated with a conveyor.

Thermal Hydrolysis Process

The Thermal Hydrolysis process typically doubles digester capacity, reduces sludge volume by increasing biogas production and dewaterability, while converting sludge to a low odor soil conditioner. Several technologies could increase digestion rates in anaerobic digesters by disintegration and hydrolysis, but none have the same dramatic effect that the THP process has on dewaterability.

Anaerobic Disintegration System

The Disintegration System increases the gas yield from the anaerobic digester by as much as 30%. At the same time, it reduces sludge for disposal by up to 20%, thus drastically lowering disposal costs.