A Amdro™ Amdro™ is a patented technology for desalination of acidic wastewater with high concentrations of metals and calcium salts. Membrane Filtration - reverse osmosis H Hydrotech™ Disc Filters Hydrotech™ mechanical and self-cleaning Disc filters provide reliable suspended solids removal for municipal effluent polishing and industrial water reuse. Filtration I Idrascreen™ High capacity compact screening units for wastewater pretreatment and solids separation. Screening and Separation