Engineer – RO & STP Operation & Maintenance

Responsible for the safe, efficient, and reliable operation and maintenance of Reverse Osmosis (RO) plants and Sewage Treatment Plants (STP). The role involves monitoring plant performance, maintaining water quality, troubleshooting equipment and process issues, coordinating preventive and corrective maintenance, and ensuring compliance with environmental, health, and safety requirements. Key Responsibilities Operate and monitor RO and STP systems to ensure continuous and efficient plant operation. • Monitor parameters such as pH, TDS, conductivity, flow, pressure, turbidity, DO, MLSS, COD, BOD, chlorine, and other relevant water-quality parameters. • Maintain daily operation logs, production records, chemical consumption records, and equipment performance reports. • Operate and monitor RO systems including: • Feed and high-pressure pumps • Multimedia and activated-carbon filters • Cartridge filters • RO membranes • Dosing systems • CIP systems • Pressure vessels and associated piping • Operate and monitor STP processes, including: • Screening and grit removal • Equalization • Biological treatment/aeration • MBBR/MBR/SBR or conventional biological systems • Clarification • Filtration • Disinfection • Sludge handling and dewatering • Ensure treated water meets required quality standards and discharge/reuse requirements. • Conduct preventive, predictive, and corrective maintenance of pumps, motors, blowers, valves, instruments, dosing systems, filters, membranes, and other plant equipment. • Troubleshoot equipment breakdowns, abnormal process conditions, high differential pressure, membrane fouling, scaling, low recovery, and poor treated-water quality. • Coordinate with mechanical, electrical, instrumentation, laboratory, and maintenance teams for plant-related issues. • Manage chemical dosing and ensure safe handling, storage, and consumption of treatment chemicals. • Monitor RO recovery, reject flow, permeate quality, membrane performance, and CIP requirements. • Monitor STP biological performance and maintain appropriate MLSS, sludge age, DO, and other process parameters. • Prepare daily, weekly, and monthly O&M reports and performance summaries. • Maintain spare-parts inventory and identify critical spares required for uninterrupted operation. • Support inspection, servicing, calibration, and replacement of instruments and equipment. • Ensure housekeeping and cleanliness of the RO/STP plant and surrounding areas. • Follow HSE procedures, permit-to-work systems, PPE requirements, and chemical safety procedures. • Ensure compliance with applicable environmental regulations, company procedures, and client requirements. • Train and guide operators on proper plant operation, equipment handling, safety, and emergency procedures. • Coordinate with external laboratories, vendors, contractors, and service providers when required. • Participate in emergency response, breakdown maintenance, and plant shutdown/start-up activities. • Required Technical Skills • Good knowledge of RO water-treatment processes and membrane technology. • Good understanding of STP biological treatment processes. • Knowledge of pumps, motors, blowers, valves, piping, dosing systems, and filtration equipment. • Ability to interpret P&IDs, equipment manuals, process flow diagrams, and technical drawings. • Knowledge of water-quality testing and treatment-chemical dosing. • Understanding of preventive maintenance and troubleshooting techniques. • Basic knowledge of electrical and instrumentation systems. • Ability to prepare operational reports and maintain plant documentation. • Familiarity with SCADA/PLC-based plant monitoring is an advantage. • Diploma/Bachelor’s Degree in Chemical, Mechanical, Environmental, Civil, or related Engineering discipline. • Typically 3–7 years of experience in RO/STP/WTP operation and maintenance. • Experience in commercial, industrial, residential, hospitality, or facility-management water-treatment plants is preferred. • Experience with RO membrane cleaning/CIP, STP troubleshooting, pumps, blowers, dosing systems, and water-quality monitoring will be an advantage. • Key Performance Indicators (KPIs) • RO permeate quality and recovery percentage. • STP treated-water quality and compliance. • Plant availability and uptime. • Reduction in chemical and energy consumption. • Preventive-maintenance completion rate. • Reduction in equipment breakdowns and downtime. • Accurate and timely O&M reporting. • Compliance with HSE and environmental requirements. • Personal Competencies • Strong troubleshooting and problem-solving skills. • Good communication and teamwork. • Ability to work under pressure and handle emergency breakdowns. • Strong safety awareness. • Good analytical and decision-making skills. • Ability to supervise operators and contractors. • Willingness to work in shifts, weekends, or on-call schedules when required.