Positions: 1 full time position Experience: 8–15 years
A Mechanical Design Engineer working on a sewage treatment plant (STP) is responsible for designing, selecting, and supporting the installation of mechanical equipment used to treat wastewater safely and efficiently.
1. Design Responsibilities
Design mechanical systems used in wastewater treatment processes.
Prepare equipment layouts, piping layouts, and mechanical drawings.
Design systems for pumps, blowers, mixers, screens, sludge-handling equipment, and aeration systems.
Ensure designs meet project specifications, environmental regulations, and safety standards.
2. Equipment Selection
Select suitable equipment based on plant capacity and process requirements.
Evaluate vendor technical specifications.
Prepare technical data sheets for equipment procurement.
Review and approve supplier drawings.
3. Engineering Calculations
Perform calculations for pump sizing, pipe sizing, flow rates, pressure losses, and power requirements.




Ensure equipment efficiency and reliability.
4. Drawings and Documentation
Prepare and review material submittals, mechanical general arrangement (GA) drawings, piping and instrumentation diagrams (P&IDs;), equipment layout drawings, and fabrication drawings.
Use software such as AutoCAD, SolidWorks, and Autodesk Inventor.
5. Coordination
~ Coordinate with civil, electrical, and process engineers, as well as contractors, to ensure mechanical systems integrate properly with plant structures and controls.

6. Site Support
~ Provide technical support during equipment installation, commissioning, and testing.

Key Skills Required
Mechanical system design
Knowledge of wastewater treatment processes
CAD software proficiency
Equipment sizing and selection
Understanding of piping systems
Project coordination skills

📌 Senior Mechanical Design Engineer CAD (Chennai)
🏢 Cephas Consultancy Services Private
📍 Chennai