Xiamen wastewater treatment plant (China)

Integrated in its urban environment with a compact footprint, the Xiamen plant daily discharge 300 000 m³ of highly depolluted effluent to the sea, thanks to nitrification – denitrification treatment through Boofor technology.

The plant is the result of a fruitful collaboration between the city of Xiamen (Fujian province) and SUEZ, started in 1992 with the construction of a conventional primary treatment line, followed by another 100 000 m³/d primary treatment line through SEDIPAC 3D technology.

Construction of the biological treatment phase began in April 2004 and was completed in December 2006. SUEZ’ scope of works in the contract includes process design, project management, delivery of equipment to site, civil works checking, supervision of erection, commissioning and training.

treatment line

• Primary clarification

• Fine screening

• Biological treatment:
  • 2 x 7 Biofor DN: 86.5 m² / unit
  • 2 x 14 Biofor CN: 86.5 m² / unit
  • 2 x 4 aeration system - Q = 25 000 Nm³/h per line

• Dissolved air flotation: 2 x Sediflotazur Ø 20 m

• Chemical dosing: methanol, ferric chloride, polymer