Overview

Designed, produced the full technical package, and supervised structural modifications and piping installation for a 130 L/s wastewater treatment station (WWTS) module—Module II. The scope included adapting the concrete structure, installing a new piping layout, and integrating new pumps and valves to resolve persistent clogging observed in Module I, while maintaining continuity of operations.

Requirements and challenges:

• Use “lobular” pumps instead of centrifugal to reduce the constant clogging experienced in Module I.

• Install all pumps and equipment above the flood level to protect assets.

• Work within an existing concrete structure, requiring fit-for-purpose structural modifications.

• Hydraulically connect two equalization tanks that remained in operation during the works.

Outcome and lessons learned:

• Clogging and maintenance were reduced by adopting lobular pumps.

• The new layout increased operational flexibility for maintenance and process control.

• Cast-iron fittings (vs. welded steel) are expected to extend service life and simplify future replacements.