A Amdro™ Amdro™ is a patented technology for desalination of acidic wastewater with high concentrations of metals and calcium salts. Membrane Filtration - reverse osmosis E Evaled™ Evaporation technologies for wastewater treatment, water reuse and zero liquid discharge (ZLD), waste volume and disposal cost reduction, and by-products recovery. Evaporation - Distillation - Crystallization 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