Düsseldorf . Deutschland
A
Simple Way Of Cleaning Waste Water
In
The Potato And Vegetable Processing Industry
Before
waste water leaves the factory it should be thoroughly pre-cleaned. The
firm DORNOW developed a simple three-step system that can
be applied in different phases of completion:
Step
I, separators
(pictures:
brochure P 201 E)
The
waste water is collected in a central place and then fed
regularly, over a pump with by-pass, into the slowly
rotating DORNOW separators of the type 360 or 390.
As for the separators: effective length 3 m each, Ø 600 or
900 mm. Exchangeable sieves inside, optionally with openings
of e. g. 0.4 to 0.9 mm.
Advantage of these separators: The material to be sieved
remains for a long time in the separators, thus leaving them
relatively "dry".
By
means of the cleaning devices AR 360 or AR 390 - provided
with their own air supply (fan) - the separators can clean
themselves by air jet.
For
big capacities and if you want to remove from the waste
water as many particles as possible, but also very small
particles, you can put up two or three separators, one
behind the other, with their sieve dimensions decreasing
accordingly.
The
"dry" waste drops, for instance, in containers or
movable barrel carts to be possibly utilized in the fodder
production for animals.
If pre-cleaning by means of the described separators is
insufficient, the separated water can flow into the DORNOW
cleaning basins:
Step
II, cleaning basins
(Drawing
in brochure P 201 E)
The
cleaning basins for liquids - available in different sizes -
are equipped with a conveying device made of plastic chains
and plastic drivers. The plastic drivers move very slowly
both over the bottom of a basin and through the surface of
its water.
The
residence time of the water depends on the inflow quantity
and on the size of the basin. It can vary between 20 minutes
and several hours.
With a very low expenditure in electrical energy the
cleaning basins can work day and night.
If
you want to remove also as many floating particles as
possible from the waste water, the water - already cleaned
twice - passes through a filter system:
Step
III, filter systems
The
filter systems are simply constructed channel-shaped systems
which can also be supplied in various sizes.
In
a filter system one to two or more filters can be used. The
filters are exchangeable. According to relevant agreements
with the user, washable filters or other types can be
applied.
Final
observations:
| 1. | Combination of steps I and III |
| If the above described steps I till III are applied, one will achieve an especially thorough cleaning of waste water. | |
| 2. | Step I exclusively applied |
| In many cases it is possible to skip stage II or the use of a separator (step I) is sufficient. | |
| 3. | Saving of water |
| In many cases you can take water out of the cleaning basin in order to utilize it once more in a suitable place in the production line. |
This
paper contains non-committal notes. We do not lay claim to
completeness. Alterations reserved.
Our order confirmation, accepted by our customers, is in
effect upon delivery. The presentation of a new edition of this treatise will
substitute for any previous versions.
Copyright
by DORNOW food technology GmbH, D-40549 Düsseldorf
DORNOW total on the Web: www.dornow.de / www.dornow.com
Q59 E3
Dornow food technology GmbH,
Willstätterstr. 12,
D-40549 Düsseldorf - Germany, USt-Id.-Nr. DE119264470
Tel. ++49-211-527060, Mobile ++49-172-2614932,
Fax ++49-211-596883, email office@dornow.de,
Internet: www.dornow.de,
Commerzbank
AG, Konto-No. 1452333, BLZ 300 400 00, Managing Director Karl-Dietrich
Dornow, Amtsgericht Düsseldorf, HRB 22597