Separation of solids and liquid

The operator of a biogas plant was looking for a compact separation unit which could be mounted on a trailer. A top priority for the operator was that the separator should be easy to operate. 

The customer decided on a Boerger Bioselect BS. The Bioselect BS is a highly-efficient combination of two Boerger Rotary Lobe Pumps and effective filter technology with a downstream press channel. One of the rotary lobe pumps ensures that the thick mass is reliably sealed and at the same time transfers it for further processing. Using an intelligent control unit and the adjustable pump speed, the degree of thickness can be determined. 

The Bioselect is mounted on a trailer, as the plant operator wanted to use the unit in various locations. The customer wanted to reduce the DS content in the biogas plant fermenters. To achieve this, the solids are separated from the secondary fermenter by the Bioselect. The thin phase is pumped in the closed system to the fermenter or the final storage tank. The different substances (thin and thick phase) are conveyed for further processing with the separator pumps. Additional pumps are not required. The Bioselect operates in continuous mode for 12 hours per day. The customer is extremely pleased with the Bioselect BS, particularly with the reliable operation and easy handling of the separator.

Technical data