Industrial Water: Demineralization

Water treatment by ion exchange is a common unit operation in chemical, petrochemical, oil refining, semiconductor manufacturing, and utility plants. DOWEX™ ion exchange resins effectively remove silica, dissolved solids and total organic carbon (TOC) for reduced chemical regeneration usage, waste handling, and maintenance costs.

The main considerations for demineralization operation are operating economics, quality and reliability of resin performance, and minimizing environmental costs. The primary variables in determining the operating economics are costs associated with regeneration, waste neutralization and disposal, as well as, resin replacement and disposal. The advent of uniform particle size (UPS) resin technology by Dow has brought about a paradigm shift in the performance and resulting economics of ion exchange resins.

Field experience and lab tests show that DOWEX (UPS) ion exchange resins offer numerous advantages over resins with a conventional Gaussian particle size. These advantages include, but are not limited to, higher regeneration efficiency, greater operating capacity, reduced leakage and better rinse characteristics.

Dow is the technology leader in demineralization through the synergy of DOWEX resins and FILMTEC™ membranes. Unique in the industry, Dow is able to offer its customers an unbiased product offering which will optimize performance and economics.

Product Overview
English (117KB PDF)
German (40KB PDF)
Russian (84KB PDF)

Product	Description	Type	Matrix	Total Exchange Capacity* eq/l (kgr/ft3)	Available Forms
DOWEX MARATHON 550A (OH)	A uniform particle size strong base anion exchange resin for mixed bed demineralization and condensate polishing applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.1 (24.0)	OH-
DOWEX MARATHON 650C (H)	A uniform particle size strong acid cation exchange resin for mixed bed demineralization and condensate polishing applications.	Strong Acid Cation	Styrene-DVB, Gel	2.0 (43.7)	H+
DOWEX MARATHON C	A uniform particle size, high capacity cation exchange resin for industrial and residential softening and demineralization applications.	Strong Acid Cation	Styrene-DVB, Gel	2.0 (43.7) 1.8 (39.3)	Na+ and H+
DOWEX MARATHON C-10	A uniform particle size, high capacity cation exchange resin for industrial softening and demineralization applications.	Strong Acid Cation	Styrene-DVB Gel	2.2 (48.1) 1.9 (41.5)	Na+ and H+
DOWEX MARATHON MSC	Uniform particle size, high capacity, macroporous cation exchange resin for industrial softening and water demineralization applications.	Strong Acid Cation	Styrene-DVB Macroporous	1.7 (37.1) (1.6 (35.0)	Na+ and H+
DOWEX MAC-3	A macroporous weak acid cation exchange resin used for water softening, dealkalization, and demineralization applications.	Weak Acid Cation	Polyacrylic, Macroporous	3.8 (83.0)	H+
DOWEX MARATHON A	A uniform particle size, high capacity, strong base anion exchange resin for demineralization applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.3 (28.4) 1.0 (21.9)	Cl- and OH-
DOWEX MARATHON A LB	A uniform particle size, strong base anion exchange resin specifically designed for layered bed applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.2 (26.2)	Cl-
DOWEX MARATHON 11	A uniform particle size, porous gel, strong base anion exchange resin specifically designed for demineralization of high organic water and as an organic scavenger.	Type I Strong Base Anion	Styrene-DVB, Gel	1.3 (28.4)	Cl-
DOWEX MARATHON A2	An efficient, uniform particle size, high capacity, Type II strong base anion exchange resin for demineralization applications.	Type II Strong Base Anion	Styrene-DVB, Gel	1.2 (26.2)	Cl-
DOWEX MARATHON MSA	Uniform particle size, high capacity, macroporous strong base anion exchange resin for water demineralization applications.	Type I Strong Base Anion	Styrene-DVB, Macroporous	1.1 (24.0)	Cl-
DOWEX MARATHON WBA	A uniform particle size, high capacity, weak base anion exchange resin for water demineralization applications.	Weak Base Anion	Styrene-DVB, Macroporous	1.3 (28.4)	FB (Free Base)
DOWEX MARATHON WBA-2	Uniform particle size, high capacity, weak base anion exchange resin for water demineralization applications.	Weak Base Anion	Styrene-DVB, Macroporous	1.7 (37.1)	FB (Free Base)
DOWEX MARATHON MR-3	Uniform particle size, high capacity, mixed ion exchange resin for demineralization.	1 : 1 by equivalent cation : anion	Styrene-DVB, Gel	1.0 (21.9) 1.8 (39.3)	OH- and H+
DOWEX IF-59	A floating inert resin specially designed for use in upflow service ion exchange packed bed counter-current regeneration systems.	Inert	Polypropylene
DOWEX MB	A cost effective, mixed ion exchange resin for making spot-free water.	1 : 1 by equivalent cation : anion	Styrene-DVB, Gel	1.0 (21.9) 1.6 (35.0)	OH- and H+