Chemical Engineering July 2020 - 15

WTA Technologies
or by use of a permeate pump, with or without backwash
the process control and process philosophy is
not touched, " he says.
The company's latest product is MYTEX Blocks (FigFigure
5. MYTEX Blocks incorporate customizable, textile-based, flexible
and back-washable flat sheets that are formed into self-supporting, stackable
blocks
have a closed surface for these corrosive applications.
No single screw will remain in the wetted process area;
therefore a maximum on corrosion resistance in highly
corrosive media is given, " Fevrier says.
Water and wastewater treatment
" In the field of water filtration, the industry is driven by
more and more huge projects in Asia for both water
and wastewater treatment, " says Carsten Bachert,
CEO at WTA Technologies GmbH (Gotha, Germany;
www.wta-tec.com). " As one outcome, the price for
water production dropped to $0.40/m3 of desalinated
water. One effect of reaching such price level is the
eroding margin for contractors and suppliers. Consequently,
the prices for filters went down over the last
two years, " he says.
" To catch up with this trend, WTA Technologies decided
to invest in a fully automatic production line for
submerged membrane modules, " says Bachert. " This
line was commissioned recently and ensures outstanding
quality at low production costs. But the real
challenge is not to standardize productions for huge
quantities, it is more to use such a tool and still offer
a customizable product for a price of a standardized
one, " he says.
" It is not a new application, but for the first time, we
are able to retrofit submerged filtration plants with our
membrane blocks, " says Bachert. " Usually, the genuine
supplier gets an order automatically from his client for
changing the membranes, " explains Bachert. " As these
submerged membrane module markets do not know
anything about " me-too " products, the spare business
is secured just by being selected as supplier during the
construction phase. "
What WTA Technologies does differently is to manufacture
membrane blocks that fit into the frame of
the genuine supplier. " Just by changing the membrane
blocks and adopting the permeate connection,
the membrane module can be retrofitted with latest
state-of-the-art filtration technology, " says Bachert.
" As the membrane block can be operated by gravity
ure 5), a customizable, textile-based, flexible and backwashable
flat sheet. These self-supporting, stackable
blocks allow the highest packing density. They consist
of 2-mm membrane sheet with an 8-mm channel between
the sheets; no extra frame is needed to support
the membrane blocks for up to six blocks stacked on
each other. A membrane-block intensity of 174 m²/m³
is said to be one of the highest available for plate/sheet
configurations. The blocks are easy to service, because
they open from all sides, and are easy to handle
without special tools, cranes and so on. Despite the
high packing density, the blocks have a low propensity
for clogging due to the wide (8-mm) channels between
the sheets.
The MYTEX submerged membranes have been
used in a number of applications. Some examples include:
integrated for use as a membrane bioreactor;
sequential use as a polishing step in tertiary treatment;
sequential use as sludge thickener in aerobic digestion;
and for direct filtration of medium- to high-solids
water and wastewater.
n
Gerald Ondrey
Call the
Solids Mixing
Ribbon & Cone Blenders
Fluidizing Mixers
Sigma Blade Mixers
(also for high-viscosity mixing)
Size Reduction
Wet & Dry Size Reduction
Steel & Ceramic Lined Mills
Jars & Jar Rolling Mills
Vacuum Drying
Dryers & Complete Systems
for all your solids processing
Experts
Applications:
APIs ∙ Ag-Chemicals
Biologics ∙ Catalysts
Ceramics ∙ Chemicals
Food Ingredients
Herbicides ∙ Minerals
Nutraceuticals ∙ Pesticides
Pharmaceuticals ∙ Pigments
Polymers ∙ Powdered Metals
Proteins ∙ Resins ∙ Vitamins
I
n
n
o
va
www.pauloabbe.com
ChemiCal engineering www.Chemengonline.Com July 2020
tio
n
855-789-9827
sales@pauloabbe.com
For details visit adlinks.chemengonline.com/76992-17
15
Q
u
al
1
9
1
it
y
&
Si
n
c
e
1
http://www.wta-tec.com http://www.pauloabbe.com http://adlinks.chemengonline.com/76992-17 http://www.Chemengonline.Com
Chemical Engineering July 2020

Table of Contents for the Digital Edition of Chemical Engineering July 2020
