Industrial waste water treatment

At a provider of solid wood and plywood, more than one hundred cubic meters of waste water is used in the production process every day. This water is cleaned in their own treatment plant. Part of this process is a flotation system. Here the impurities are caught in a dissolved air flotation unit.

The customer uses a multi-phase rotary pump to feed the flotation. In the narrow channels of the pump, solids build up and cause blockages. The Boerger Multichopper ensures that the solids are chopped up so that the medium can be easily pumped.

Technical data

Börger Rotary Lobe Pumps are installed on many pressure tankers for municipal and private service providers. The pumps all have very different tasks. The Boerger Rotary Lobe Pump is in a sewer flushing vehicle and extracts the waste water through a coarse filter installed on the vehicle.

The initial purification takes place in the coarse filter. The still unpurified waste water is then pumped into a centrifugal separator (cyclone).  This cyclone separates other impurities (sand etc.). The clean water is then pumped to the storage tank in the vehicle and is then available for further use. The clean water is mainly used for flushing sewers.

Thanks to the reversibility of the pump, it can be used for other purposes. The pipe lines to the suction and pressure side of the pump are fitted with cardan couplings. If required these couplings can be connected to hoses or pipe lines. This then also allows the storage tank to be filled or discharged with clean water. Due to the option of reversing the pump direction, the pipe line systems are easier to set up in the vehicle.

Technical data

A globally leading company in the area of environmental services uses a mobile unit for macerating solids in sludge and for the enrichment of this medium with polymers as a flocculating agent. This mobile unit including a mobile centrifuge is used in smaller waste water treatment plants as a drainage system. The company had used Börger products in other applications before and was perfectly satisfied with the high quality and the long service life of the Börger pump and macerating units. So, the customer decided to purchase a Börger rotary lobe pump and a Börger Multichopper plus for equipping the mobile unit.

Technical data

In a textile company the waste water from the bleaching process is conveyed into a tank. In addition to fiber material the waste water also contains small portions of hydrogen peroxide and caustic soda. The fill level of the waste water collecting tank is determined by means of a fill level gauge. When the defined fill level has been reached, a Börger rotary lobe pump is taken into operation via a control unit and conveys the waste water from the collecting tank into the sewage system. In this process, the quantity of waste water supplied to the sewage system is measured by a counter. The Börger rotary lobe pump is made of Duplex stainless steel and equipped with a maintenance-free mechanical seal.

Technical data

A Scandinavian manufacturer of tissue products uses a mobile Börger rotary lobe pump with ATEX-compliant design for conveying pellet sludge. The customer was particularly impressed by the gentle pumping of the medium and the ease of maintenance of the Börger rotary lobe pump.

Technical data

In the waste water treatment system of a manufacturer of soft foam rubber a Börger rotary lobe pump sucks the flotation sludge from the surface of the flotation tank. In the process, the viscous, foam-like sludge is sucked through a long suction line. Pumping in slurp operation is possible without problems and the pump is capable of running dry for a short time. The pump even conveys the more solid flotation layers without any cavitation and is resistant to changing proportions of gas in the pumped medium.

Technical data

An international corrugated cardboard manufacturer required two waste water storage tanks for its own water treatment facility.  

They opted for a Boerger elevated tank, type 13.6 with a total volume of 1,025 m³ (4510 usgpm) (and a Boerger elevated tank, type 04.3 with a volume of 49 m³ (215.6 usgpm).

Technical data