Case Studies

A plastic recycling company producing polypropylene granulates from post-consumer plastics uses two Börger Bioselect RC 75 in its plant. The two Bioselect units separate plastic residues from the washing water. Reducing the residual water content helps to save a lot of energy in the recovery process.

Before purchasing the Börger separators, the plant had already tested several devices. The Bioselect reduced the residual water content to less than 20 %, whereas a residual water content of almost 50 % was measured in the plastic residues following separation by the other devices.

The two Bioselect RC 75 are integrated in the process. Due to process-related circumstances, the process flow feeding the Bioselect cannot be regulated. A control unit automatically adjusts the speed of the separators to the volume of the feed flow and the solids content contained therein. This ensures that the two separators always operate at their optimal capacity.

The operator of the recycling plant is very satisfied with the two Börger separators as they are very energy-efficient. The customer was impressed by the high dewatering degree and the long service life of the separators.

Technical data

Due to lack of straw, a dairy farmer was looking for an alternative bedding material for the cubicles of his 240 dairy cows. For economic reasons he opted against expensive sawdust and for a separator.

He installed a Bioselect RC 40 separator with Börger control technology and a BLUEline rotary lobe pump. The control unit coordinates the operation of the feed pump, the liquid phase pump and the separator perfectly. Automatic separation at required times can also be selected.

The DS content in the solid phase can be continuously adjusted with ease. Thus, the farmer selects a high DS content (>30 %) for use as bedding material and a low DS content (approx. 22 %) when the solid phase is to be delivered to an associated biogas plant, saving storage capacity of up to 25 %.

Using the separated solid phase as bedding material works very well. The cows like to lie on the soft material and the bacteria count in the milk continues to be at a very low level. The customer is very satisfied with his Bioselect.

Technical data

For the separation of liquid manure and digestate an agricultural contractor uses a Bioselect RC 150 installed on a trailer. The press auger separator achieves a maximum capacity of up to 150 m³/h, with a Börger rotary lobe pump feeding the Bioselect directly and without intermediate container. The Börger control technology continuously measures the capacity utilization of the separator and automatically varies the feeding quantity. This ensures that the separator always operates at its optimal capacity.

In order to protect the pumps and separators from impurities, the feed pump sucks the medium to be separated through a Börger Rotorrake. The macerator shreds the fiber bundles while the impurities are collected in the stone trap. This guarantees long service lives of the pump and the separator.

The power required by the machines is produced by an 88 kW power generator. A 10 m pivotable conveyor belt transports the separated solids to the required location. The DS content in the solid phase can be continuously adjusted between 18 and 38 % by the control technology. The liquid phase is conveyed directly to the required storage location by a Börger rotary lobe pump in the closed system.

Technische Daten

A pig farm uses a Bioselect RC40 to adjust the solid content of pig manure. When the manure enters the separator, it has a dry solids content of approx. 5 %. The Bioselect separates the solid from the liquid phase. The DS content in the solid phase is infinitely variable up to 38 %. The customer separates with a DS content of 22 %. This way, the stackable solid phase that is passed on to a biogas plant contains large quantities of liquid.

Since the solid phase has a high nutrient concentration, the farm provides many nutrients. In addition, the farmer saves storage space. The separated liquid phase can be spread very well. It runs easily down the leaves and quickly penetrates the soil.

Technical data