Sr. Mechanical Design Engineer

Job Title: Mechanical Design Engineer – Sewerage Treatment Plant (STP)

Experience: 8+ years

Location: Chennai

Industry: STP/Water Treatment/RO

Job summary: A Mechanical Design Engineer working in a sewerage 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

• 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 supplier drawings and approve them.

3.Engineering Calculations-

Perform calculations for:

• Pump sizing

• Pipe sizing

• Flow rates

• Pressure losses

• Power requirements

• Ensure equipment efficiency and reliability.

4.Drawings and Documentation-

Prepare and review:

• Material Submittal preparation

• Mechanical General Arrangement (GA) drawings

• Piping and Instrumentation Diagrams (P&ID)

• Equipment layout drawings

• Fabrication drawings

Use software like:

• AutoCAD

• SolidWorks

• Autodesk Inventor

5.Coordination-

Coordinate with:

• Civil engineers

• Electrical engineers

• Process engineers

• Contractors

Ensure mechanical systems integrate properly with plant structures and controls.

6.Site Support-

Provide technical support during:

• Equipment installation

• Commissioning

• 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
  

Typical Employers:

• Environmental engineering companies

• Water utility companies

• EPC contractors