SOLUTIONS CAVITATION FOR DISINFECTION

Washing potatoes Process

BENEFITS

Influent of

reused water

SEEDLING POTATOES

Treatment - Filtration and Controlled Hydrodynamic Cavitation (CHC)

Treatment System

Removes

Kills Bacteria Combining

CHC (Controlled Hydrodynamic Cavitation)

Separation/Filtration

Pressure

Vacuum

Shear Force

Precipitated Calcium Carbonate

Other Suspended Solids

Food Value Chain

0

1

2

3

4

5

6

1992 1995 1999 2003 2007 2010

10

5 t

on

es

Years

Dutch potato exports seed potatoes potatoes products ware potatoes total

With the increasing shortage of global fresh water resources,

there is a growing need of reusing water and thus increasing

the potential of potable water savings. Some of the water reuse

must be done in the food value chain where more than 70%

of the fresh water use occurs.

The Netherlands are the largest seedling potatoes producing and

exporting countries with 60 000 hm2 area that is used to grow

seedling potatoes and 75% of it is being export. About 260 000 m3 of

water is used to wash exported potatoes per year, that can't be reused

because of bacterial and chemical infection

CHALLENGE DECREASING THE WATER FOOTPRINT IN THE FOOD VALUE CHAIN

Historically, by nature, water is purified by rolling over rocks. When water is put under

sufficient physical stress, it tears apart at weak points in its structure, forming bubbles which

collapse when the tearing force is gone (Cavitation). The Cavitation is a well-known force in fluid

mechanics which can destroy submarines, imagine what occurs on a micro scale when a

multitude of cavitation bubbles collapse next to bacteria.

Treatment

CHC Equipment