NBIA Wastewater Treatment Works

Client: New Bangkok International Airport

Location: Suvarnabhumi Airport, Thailand

Highlight of Features:

The BNR wastewater treatment plant with a mechanical dewatering using sludge centrifuge and complete with an effluent reuse or tertiary treatment system.

Challenges and Solution:

The project was on schedule while other parts of the airport are still under the construction. Synthetic wastewater was necessary in order to commence the process commissioning.

Construction time: 24 months

Completion Date: 2 April 2003

Contract Value : 148,665.702.27 MB, total

Aquathai is a nominated subcontractor to Italian-Thai Development for the NBIA or Suvarnabhumi Airport wastewater treatment project. The Central utilities consist of water supply and central wastewater treatment system supporting new international airport and its facility. The scope of service included detail design rechecking services for process, mechanical and electrical work, procurement, supply, installation and commissioning for the NBIA wastewater treatment work.

The Capacity of this plant is 9,000 cu.m./day, the system includes:

Inlet Pumping System
Pretreatment system- Drum Screen, Vortex Grit Removal and Grit Classifier
Secondary treatment system, BNR activated sludge treatmentwith centrifugal air blowers, fine bubble diffusers, and submersible mixers
Secondary Clarifier with a diameter of 22.5 meter complete with RAS & WAS pumping
Tertiary treatment system with a dual media filter using air scour blower and backwash water pumping system
Recycle water treatment system, designed to reuse the treated water in the plant area, completed with a disinfection process,pH control system and the Pumping with ancillaries
Sludge handling process using a mechanical sludge dewatering process with lime stabilization. The system include a holding tank with mixer, sludge feed pump, centrifuge machine,polymer feeding and lime storage and feeding system
Odor control system with odor fan and soil bed filter.