(KANSAS CITY, Mo., Oct. 29, 2005) – Tnemec Company, Inc., a leading manufacturer of high-performance coatings for specialized industrial and architectural markets, offers more versatility for its popular Series 435 Perma-Glaze, a modified polyamine epoxy for use in wastewater environments, according to Vaughn O’Dea, technical sales manager, Water & Wastewater.
Specifically designed to withstand hydrogen sulfide (H2S) gas permeation, Series 435 can be used as a thin-film coating or high-build liner to protect concrete and steel substrates exposed to wastewater environments such as wet wells, sludge holding tanks, digesters, clarifiers and sewage pipelines.
“Series 435 can be used for three different applications: a topcoat over Tnemec’s popular Series 434 Perma-Shield H2S mortar; a thin-film coating for concrete or steel; and a high-build liner for concrete, providing the versatility needed to protect in severe wastewater environments,” says O’Dea.
When used as a glaze coat over Series 434, Series 435 Perma-Glaze provides extra protection (especially in areas exposed to high H2S levels), sealing the mortar and creating a slicker surface resistant to slime growth.
If using Perma-Glaze as a stand-alone, thin-film coating, it can be applied at 15 to 40 mils over steel or 30 to 40 mils over concrete. Because it is self-priming, one or two coats of Perma-Glaze is all that is needed to protect areas in a WWTP such as clarifiers, rake arms, filters, digesters and wetwells. Ideal applications for this product are steel and concrete located in odor-control domes as they can experience very high H2S levels.
When spray-applied between 40 and 80 mils, Perma-Glaze can be utilized as a high-build liner that provides outstanding corrosion protection over smooth concrete substrates – new or refinished – and can be more economical than trowel-applied systems. This makes Perma-Glaze an attractive, seamless alternative to PVC liners as the labor required to apply the coating is substantially less.
Series 435 provides excellent resistance to microbiologically induced corrosion, H2S gas and the typical contaminants found in wastewater streams. Formulated specifically for wastewater environments, Series 435 holds up extremely well in corrosive and abrasive environments.
According to O’Dea, Series 435 is user-friendly, can be applied by brush, roller or spray, is VOC compliant, offers outstanding chemical resistance, and has been tested in accordance with the ASTM tests for abrasion, adhesion, flexural strength, chemical and water vapor transmission.
Series 435 has been used on a number of projects across the U.S., including Clay County Wastewater facility, Orange Park, Fla.; the Owen Lift Station in Withee, Wis.; the Chambers Creek Digester, Tacoma, Wash.; the Surprise, Ariz. Wastewater facility and the Moccasin Bend Wastewater Treatment Plant, Chattanooga, Tenn.
Series 435 Perma-Glaze
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