Dow Water & Process Solutions

Groundwater and Waste Water

In commercial groundwater and waste water treatment applications, ion exchange resins are indispensable tools for cost effective removal of a broad spectrum of metal salts and organic contaminants.

Metals and Perchlorate: Dow offers ion exchange resins ideally suited for the commercial scale removal and/or recovery of pollutants such as uranium, radium, perchlorate, arsenic, etc., from groundwater and industrial waste waters. To select the appropriate ion exchange resin products for a specific metals removal applications, refer to the Periodic Table based Product Selection Guide.

Organics Removal from Water: Organic materials are traditionally removed from water with activated carbon. Activated carbon is difficult to regenerate, however, and is usually used only once before it is discarded or thermally regenerated off-site. Dow has developed synthetic, polymeric adsorbents that are engineered for regeneration under milder conditions so on-site regeneration is possible. Now the organic solvent or product can be returned to the process, eliminating a waste product.

Organic acids can be removed from water with DOWEX™ M-43, a general purpose acid absorber.

DOWEX Resins

Product	Description	Type	Matrix	Total Exchange Capacity* eq/l (kgr/ft3)	Available Forms
DOWEX OPTIPORE L493	A general purpose polymeric adsorbent for the concentration of a wide variety of chlorinated and organic solvents from water.	Adsorbent	Styrene-DVB, Macroporous
DOWEX M-43	Corrosion control with DOWEX M-43 ion exchange resin.	Weak Base Anion	Styrene-DVB, Macroporous	1.55	FB (Free Base) form
DOWEX 21K XLT	Uniform particle size, high capacity, strong base anion exchange resin for mineral processing applications.	Type I Strong Base Anion	Styrene-DVB, Gel	1.4	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 1	High capacity strong base anion exchange resin.	Type I Strong Base Anion	Styrene-DVB, Gel	1.4 (30.6)	Cl-
DOWEX NSR-1	A strong base, nitrate selective, anion exchange resin.	Triethylamine Strong Base Anion	Styrene-DVB, Macroporous	0.9 (19.7)	Cl-
DOWEX M4195	Chelating resin for copper, nickel, and cobalt processing.	Chelating Resin	Styrene-DVB, Macroporous		Bis-Picolylamine
DOWEX G-26 (H)	Uniform particle size strong acid cation exchange resin for specialty demineralization and catalyst applications.	Strong Acid Cation	Styrene-DVB, Gel	2.0	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 RSC	Highly selective for removal of radium and barium from water.	Barium Doped	Styrene-DVB, Gel	.65 meq/mL	H+
DOWEX BSR-1	A uniform particle size weak base anion exchange resin for selective boron removal.	Weak Base Anion	Styrene-DVB, Macroporous	0.7
DOWEX TAN-1	An open pore macroporous strong base anion exchange resin for organics removal from potable water and food applications.	Type I Strong Base Anion	Styrene-DVB, Macroporous	0.7 (15.3)	Cl-