Specifications

60
Lifting
Screening
Grease and sand
removal
Clarier
Process step Short description Pumps & motors
Lifting
To ensure the efcient gravity ow in the
plant, wastewater has to be lifted up.
-Redundant pumps to feed in water
-Redundant pumps for rain water tank.
Screening
To remove the most voluminous trash in order
to facilitate the next treatment phases.
-Motor for Grid management and Scraper
-Motor for waste evacuation
-Motor for waste compression
Sand & grease
removal
To separate wastewater from grit and sand
with the help of air. The air that is blown into
the tank resolves the concentrated waste.
-Motor for scraper
-Motor for the shield
-Redundant pumps to extract the sand
and grit
Primary clarier
To remove settled and oating or suspended
materials from the wastewater. Primary sludge
is pumped out of the clarier
Motor for scraper -
Motor for the shield -
In the following parts of the document, the methodology described above is used, from the selection phase to
the implementation and nally the operation phase.
The purpose of this chapter is to provide a real example of a process control application using the recommen-
dations in the previous chapters.
A waste water treatment plant is used to illustrate how to realize a pump and motor application. The rst part of
the process is implemented from the lifting to the primary clarier using the solution platform introduced before.
Presentation
Each process step has specic constraints in terms of pumping and motors.
Process step
Water application example
Objective