LANXESS participates in Water Today 2018 – February 8 - 10, 2018 in Chennai
A system for
efficient water treatment
Chennai –The LANXESS booth
at this year’s Water Today’s Water Expo (February 8 to 10, 2018) focuses on the
company's integrated expertise and longstanding experience in water treatment.
The specialty chemicals company offers Lewatit brand ion exchange resins,
Lewabrane membrane elements for reverse osmosis and Bayoxide iron oxide
adsorbers.
“Membrane
technology and ion exchange complement each other perfectly and are used by
many of our customers in tandem. At Water Expo, we will showcase our expertise
as an experienced one-stop supplier for all water treatment requirements in the
growing Indian water market,” says Mr. Prakash Shanmugam, GM & Head of
Business Unit – Liquid Purification Technologies (LPT) in India. One well-known
example is the efficient purification of feedwater for water/steam cycles in
power plants. Further groundbreaking examples are also becoming increasingly
important, such as the effluent-free treatment of dye mill wastewater (zero
liquid discharge) or the removal of critical organic pollutants
(micropollutants) in wastewater treatment.
A number of new developments
LANXESS addresses
the current challenges in water treatment with a range of new developments.
These include energy-efficient membrane elements from the Lewabrane RO ULP line
(Reverse Osmosis – Ultra Low Pressure), Lewatit NM 3367 mixed bed ion exchange
resin for desalination and Lewatit TP 107 selective ion exchange resin with
high Cr(VI) binding capacity. LewaPlus design software now features a module
for innovative reverse osmosis technology.
“As a globally
leading supplier of products and solutions for water treatment and
purification, we support our customers in managing scarce water resources
efficiently and sustainably. Our products meet the highest international
production and quality standards,” adds Prakash.
Energy efficiency trumps all
New to the LANXESS
booth are the membrane elements from the Lewabrane RO ULP line, which are
equally suited to treating drinking water and wastewater. They are designed for
a test pressure of just 7.6 bar, meaning the pressure vessel can operate at 40
percent lower operating pressure, resulting in lower energy and operating costs
compared to standard elements. Due to its higher water permeability and
corresponding high flow rates, investment costs can also be lowered at the same
time.
The ULP membrane
elements are set apart by a highly hydrophilic membrane surface and uniform
membrane overflow as a result of the alternating strand design (ASD) feed
spacers. Both factors serve to reduce organic fouling, further reducing
operating costs, as fewer cleaning chemicals are required and cleaning
intervals can be extended.
The new membrane
elements are produced at the Bitterfeld site, where LANXESS doubled its
membrane capacity in mid-2017 in response to growing demand.
Selective and efficient removal of chromium(VI)
The new, selective
Lewatit TP 107 ion exchange resin was developed specifically for municipal
drinking water treatment facilities and is certified to NSF/ANSI standard 61.
Lewatit TP 107 also offers key advantages in the industrial sector, such as for
wastewater treatment in the leather and electroplating industries. The
regenerableadsorber resin (multiple-use) demonstrates extraordinarily good
chromate adsorption kinetics at high specific flow rates, thus significantly
reducing the resin requirements. Compared to traditional strong base anion
exchange resins, the capacity for chromium(VI) is increased by a factor of up
to 2.5. Hazardous chromate is efficiently removed from wastewater with up to
100 ppm Cr(VI) as well as at very low concentrations in the ppb range, thus
meeting all current regulatory requirements. Lewatit TP 107 demonstrates a high
tolerance for other constituents found in water, such as sulfates. Operating
costs remain attractive because the resins require fairly infrequent regeneration,
thereby significantly reducing the consumption of regeneration chemicals.
Following reduction, which produces harmless chromium(III), the regenerating
solutions can be treated easily and safely.
Water desalination in heating installations
LANXESS developed
the Lewatit NM 3367 mixed bed ion exchange resin for desalinating filling and
top up water in modern water heating installations. Its particular mix ratio
allows for a long operating life and highly efficient desalination. The
exchange system owes its high level of efficiency to a special process for
reversing the charge of the anion exchange resin used, resulting in a hydroxide
ion charge of over 90 percent. With this customized mixed bed system, not only
can one prevent scale formation in the water-bearing parts of a heating system,
but also able to avoid corrosion in the long term. This cannot be achieved
through softening alone.
Gas-tight filling of ion exchangers in Jhagadia
LANXESS has built
a new filling plant for ion exchange resins in Jhagadia, India. It processes
special, vacuum-sealed gas-tight bags, similar to coffee packaging. This is
advantageous particularly for longer storage of highly regenerated anion
exchange resins or the corresponding mixed bed filters, as it prevents pre-loading
with carbon dioxide.
The new plant can
also fill bags of just 12.5 liters. In this way, LANXESS offers a handy, small
container especially for customers who would like to fill smaller exchange
cartridges on site, for instance using Lewatit NM 3367 for heating systems.
LewaPlus now also available for CCRO systems
New
functionalities have once again been added to the LANXESS proprietary
simulation and design software LewaPlus, which can be used for reverse osmosis
(RO) as well as for ion exchange (IX) processes or any combination of the two.
A new module introduced allows the users to model systems equipped with closed
circuit reverse osmosis (CCRO) technology from Desalitech, and was developed in
cooperation with the company from Newton, Massachusetts. Using this software,
system planners can also design RO systems based on this innovative technology.
This can contribute to further improving the environmental footprint of water
treatment. The existing performance algorithms and computer-based processes,
CCRO module allows to quickly and precisely design RO systems that are
optimally calibrated to Lewabrane elements.
LANXESS offers a
comprehensive range of ion exchange resins and membrane elements tailored
specifically to the above-mentioned applications and other uses. Detailed
information can be found online at http://lpt.lanxess.com/en/home/
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