Additional Info

• In operation since: 2013
• Type of wastewater treated: Domestic
• Hydraulic load: 244 m³/day
• Organic load (PE): 1500 PE
• Organic design load (kg BOD/day): 90
• Location: Villenouvelle (Hte Garonne)
• Client: SMEA Hte Garonne
• Stage 1 type: French system
• Stage 1 surface area (m²): 1129
• Stage 2 type: Vertical flow, saturated
• Stage 2 surface area (m²): 100
• Stage 3 type: Other
• Stage 3 surface area (m²): 70
• stage 4 type: Other
• stage 4 surface area (m²): 300
• Needs:

  Treatment of domestic sewage for 1500 p.e. with specific requirements on nitrogen and phosphorus treatment before final reject.

• Solution:

  Reed bed filter (French system) assures primary and secondary treatment, followed by a trickling fitler for polishing and nitrification. A tertiary treatment with apatite removes phosphorus. The treated wastewater goes through a vegetated effluent discharge area before final reject into the local river Merderic.

• Benefits:

  Sustainable and high performing wastewater treatment plant with low energy requirement and easy maintenance. Guarantee on the outlet quality : BOD5 : 25 mg/l, COD : 125 mg/l, SS : 35 mg/l, TKN : 15 mg/l, TP : 10 mg/l. Design and Build : Epur Nature. Established : 2013.