Installation and piping commissioning of Sewage Treatment Plants (STP), Effluent Treatment Plants (ETP), Reverse Osmosis (RO), and Demineral (DM) / Mix Bed plants demand a disciplined engineering workflow.Installation Setting heavy equipment on civil foundations, anchoring skids, and installing vibration dampeners. Erecting multi-grade media filters, RO pressure vessels, and ion-exchange resin columns.Piping Commissioning Laying process, chemical, and utility pipelines using Stainless Steel (SS), UPVC, or HDPE materials. Performing hydro-static pressure tests, line flushing, and joint integrity checks.Plant Commissioning Checking electrical panels, PLC/SCADA logic integration, and VFD instrumentation calibration. Inspecting pump alignments and motor insulation resistance. Loading sand, activated carbon, and specialized resins, plus calibrating chemical dosing systems. Inoculating biological seed sludge for STP/ETP systems and flushing RO membranes. Running 72-hour trial cycles to achieve target discharge, COD, BOD, TDS, and conductivity limits.Maintenance Executing daily filter backwashing and regular Clean-in-Place (CIP) for RO membranes. Performing acid and caustic regeneration for DM and Mix Bed units. Conducting preventive servicing of dosing pumps, blowers, and instrumentation. Monitoring feed water versus treated water parameters to optimize chemical usage.