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Chemical and mechanical processing work together to treat the vibratory finishing wastewater at Aro-Sac, increasing production,making the water reusable and rendering the sludge a non-hazardous waste...

Question: Steve, your column in the September 2005 issue, non-hazardous waste has become hazardous, in which you describe how changes in process and wastewater pretreatment chemistry can have a profound impact upon the filter press cake’s status as a RCRA hazardous or non-hazardous waste reminded me of a situation we had about 10 years ago.

Ultrafiltration system comes in two compact versions.

Dennis Wilson will serve as business development and key account manager.

Products include lineup of membrane-based technologies.

Phosphate conversion coatings are used to impart corrosion resistance, lubricity or to serve as a base layer for subsequent coatings. Hubbard-Hall’s Robin Deal explains their environmental impact. 

This article is based on a presentation given at NASF SUR/FIN 2022, in Rosemont, Illinois, in Session 6, Responses to PFAS / PFOA.  It follows the case study of three facilities’ conversion from PFAS-containing wetting agents to non-PFAS equivalents, eliminating PFAS and moving forward with a smaller and more sustainable environmental footprint.  The journey of conversion from PFAS-containing wetting agents in both chromic-sulfuric etch and hexavalent decorative plating tanks can be complicated and winding due to deep rooted standard industry practices, as well as state and federal regulations.  Outlined here is a clear course of action that led to eliminating PFAS from the facilities’ wetting agent strategies. 

Combined entity focuses on meeting odor and air pollution control needs of both municipal and industrial customers.

PPG has reached agreements to acquire coating companies VersaFlex and Wörwag, with transactions expected to close in the first quarter and half of 2021, respectively.

New final rinse technology optimizes ecoat process, reduces cost and improves sustainability.