A resource-protective wastewater treatment plant for the city of Tehran. The plant is energy-neutral by use of biogas and the purified water is reused for agricultural irrigation. The plant, which covers 4 water lines & 6 sludge treatment lines, was built on DBO-scheme and was operated by WABAG for a period of 3.5 years.

Project Highlights

• Turn-key construction of one of the large scale WWTP
• Activated sludge process & Anaerobic sludge digestion
• Energy-neutral – >80% self-sufficiency by use of biogas
• Process design enables water reuse for agricultural irrigation