H Hydrex™ Comprehensive range of water treatment chemicals to suit all water treatment needs. Sludge treatment Hydrotech™ Drum Filters Patented mechanical self-cleaning drum filter for municipal and industrial recovery water applications. Filtration Hydrovex™ The Hydrovex™ line of wet weather technologies is applicable in stormwater, combined or sanitary sewer applications and has been available to the American market for over 30 years. With years of experience in providing urban drainage solutions, John Meunier Inc. is dedicated in offering the market with the highest quality products and support. Screening and Separation O Opus™ The Opus™ technology is a proprietary Optimized Pretreatment and Unique Separation process for desalination of feed water with high concentrations of silica, organics, hardness, heavy metals, boron and particulates. Membrane Filtration - reverse osmosis