Wastewater Treatment Plants Comprehensive Study by Process (Primary Treatment, Secondary Treatment, Tertiary Treatment), Equipment Type (Membrane Separation, Biological, Disinfection, Sludge Dewatering, Others), Service Type (Design & engineering consulting, Building & Installation Service, Operation & Process Control, Maintenance & Repair, Others), End User (Municipal, Industrial (Chemical & Pharma, Oil & Gas, Food, Pulp & Paper, Metal & Mining, Power Generation, Others)) Players and Region - Global Market Outlook to 2026