Technology that sets standards

> Inflowing sewage flows into the solids
   separation reservoir
> Solids are held back
> Prepurified sewage continues into the
   combined collection reservoir

> Collection reservoir filled
> Shut-off ball automatically closes the
   inlet
> Pumping sequence begins

> Pump pumps in the reverse direction
> Sewage flows through the solids
   separation tank, pumping the solids
   into the outgoing pressure pipeline

With the solids separation system, the inflowing sewage flows into the distribution tank and from there into the open solids separation tank. The solids are kept back here. Only prepurified sewage is now able to pass through the pump into the large, combined collection reservoir.

While the collection reservoir is filled, the water level in the solids separation tank rises. The shut-off ball automatically closes the inlet.

Now, pumping starts when the correct level has been reached. The pump pumps in the reverse direction. The sewage flows through the solids separation tank and thus conveys the "filtered-out" solids into the outgoing pressure pipe.

Then, the entire solids separation system is flushed and cleaned. Pumping is stopped again when the correct level has been reached. The shut-off ball drops, leaving the path free for a new filling sequence. During this pumping sequence, the sewage is pumped into the other solids separation tank.

Advantages of the solids separation system:
> Uses pumps with free ball passage
   < 80 mm, thus reducing fuel requirements
   and operating costs while
   increasing efficiency
> Hygienic conditions for maintenance
   and assembly work
> Pump roomis dry, clean and odourless
> Less wear, since the solids are not
   pumped by the hydraulic unit
> Submersible sewage pump with
   adjusted impeller and protection
   class IP 68 (submersible)
> No corrosion problems, no effect
   from the formation of hydrogen
   sulphide