WRIGHTSTOWN When the Village of Wrightstown discovered a serious level of corrosion in the biosolids tank at its wastewater treatment plant, engineers took concrete measures to repair the damage using a thick-film coating system from Tnemec. “Due to excessive exposure to hydrogen sulfide (H 2 S) gas and biogenic sulfide corrosion, the concrete walls and ceiling were badly deteriorated and desperately needed rehabilitation,” reported Tnemec c

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