Metito Case Study: Water & Wastewater Treatment, National Fertiliser Public Company - Thailand

National Fertilizer Public Company Ltd. of Thailand (NFC) constructed a modern NPK fertilizer plant, that included a Phosphoric Acid manufacturing unit, within the complex. As a natural result, the wastewater had an abnormally high content of various highly toxic pollutants like Phosphoric Acid & Fluorides couples with Sulphates. The characteristics of this wastewater and the amount of waste to be treated, coupled with the strict environmental discharge regulations, required a tailor-made water management solution, and special treatment processes. Due to the nature of the project and to such stringent requirements set by NFC, Metito was chosen and entrusted to execute the wastewater plant and other water treatment facilities. The plant was then classified as one of a few of its kind in the world.

Metito Case Study: Water & Wastewater Treatment, National Fertiliser Public Company - Thailand

Key Data

Location: Map Ta Phut, East Coast of Thailand Gulf - Thailand

Plant Type: Desalination, Water & Wastewater Treatment, Demineralisation & Chemical Injection

Capacity: Different Capacities for Various Packages

User: Fertiliser Plant

Client: Hyundai Engineering & Construction Company (HEC)

End User: National Fertiliser Public Company (NFC)

Contract Type: Foster Wheeler Design & Supply on FOB Basis


Scope of Work

Metito took charge of the complete design, engineering, manufacture, inspection, testing & supply on FOB basis, supervision of installation & commissioning, start-up and performace testing of the complete water & wastewater treatment plant packages. The packages included:

  • Process Wastewater Treatment Plant with a capacity of 100 m3/h to treat waste streams from the various production units. The plant units include a Hastelly-C heat exchanger, a 1200m3 Acidic water-lined equlisation basin, automatic lime handling and dosing system, two lime silos each measuring 6.5 diameter and 31m high, pre-contact tanks, 15m diameter primary and secondary clarifiers, and belt press sludge thickeners with polmer dosing units.
  • Water Pretreatment System treating 310 m3/h of raw water for process use, through solid contact clarifiers
  • 20 m3/h Ion Exchange Chemical Waste Treatment Collection and Treatment System
  • Ion Exchange Plant Chemical Waste Treatment Collection and Treatment System
  • 168 m3/day Extended Aeration Sanitary Drainage and Treatment System
  • Distributed Control System for controlling all plant operation


Key Benefits

  • A total solution for the fertiliser plant water and wastewater treatment needs
  • An optimum design that takes into consideration the stringent requirements set by the owner and the project consultants
  • More efficient project management since all packages are handled by one contractor: Metito
  • An efficient wastewater treatment plant that takes into consideration the tough and varying quality of the feed waste with a practical Zero Liquid Discharge (ZLD)
  • A reliable design that meant trouble free operation and minimum downtime
  • Full local support and customer service, in a world-class quality, from a well established company




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