Global Membrane Distillation Market Growth Insights By Types (Direct Contact MD (DCMD), Air Gap MD (AGMD), Vacuum MD (VMD), Sweeping Gas MD (SWGMD), Vacuum Multi-effect Membrane Distillation (V-MEMD), Permeate Gap MD (PGMD)), By Applications Covered (Desalination, Extraction from Petroleum, Mining and Industrial Processes, Food Industry) & Region - Forecast to 2031