Iran’s second city expands wastewater capacity with Grundfos

Mashhad expansion relieves residents, industries and Kashf Rood River from overspill
Wastewater plant expansion

The City of Mashhad faced an urgent challenge of improving the quality and size of its wastewater treatment facilities. As Iran’s second-largest city with more than 3 million people, Mashhad attracts more than 33 million religious tourists per year. The existing wastewater treatment plant’s capacity was only 100,000 cubic metres (m3) per day.

The lack of wastewater treatment capacity has also affected Mashhad’s water-intensive industries, including saffron and barberry production, leather and carpets.

Significant amounts of untreated wastewater have discharged into the local Kashf Rood River as a result. So the municipality set out to expand its wastewater transfer networks and treatment plants.

The situation
One of these is the Alteymour Wastewater Treatment Plant, a Modified Ludzack-Ettinger (MLE) treatment plant, which will cover about one-third of the population. The plant has a primary capacity of about 80,000 m3 per day for 472,000 people and target capacity of 167,000 m3 per day for 1,000,000 people.

The project budget is IRR 368 billion (EUR 10.7 million) and the contract type is Design, Build & Operate (DBO) between Mashhad Water & Wastewater Co. and Kayson-Mushrif Co. with Pars Ab Tadbir Co. as the consultants. The project began in 2011 and is expected to be complete before 2015.

Sadrab Sanat Co., a well-known water and wastewater contractor in Iran, entered the project as Kayson’s sub-contractor for procurement and installation of hydro-mechanical equipment.

Grundfos supplied its SE and S lines of wastewater pumps for the Alteymour Wastewater Treatment Plant at Masshad, Iran – pictured here under construction.

The Grundfos solution

Sadrab Sanat Co. selected Grundfos submersible pumps and mixers as well as chlorination and chlorine gas neutralisation (scrubber) systems.

“The issues with sewage handling facing a large city such as Mashhad can seem overwhelming for the municipality,” says Kaveh Samimi, Senior Sales Engineer, Grundfos Iran. “We were able to work with the water utility, the contractor and the consultant to build a solution that met the requirements for wastewater treatment for a very large population, as well as help resolve the water quality issues in the Kashf Rood river.”

The order was finalised with 31 submersible wastewater pumps in different sizes with accessories, 11 AMG mixers with accessories, 3 chlorination systems each with a capacity of 40 kg/hr and a chlorine gas neutralisation system suitable for 1,000 kg. of chlorine gas.

“Grundfos products have proven world class capability and performance.”

Amir Soofi, Chairman of the Board, Sadrab Sanat Co.

Grundfos supplied its SE1 wastewater pumps with the new S-tube® impeller to the new wastewater plant in Mashhad, Iran.

The outcome

“Grundfos products have proven world class capability and performance,” says Amir Soofi, Chairman of the Board, Sadrab Sanat Co. “The selection process for these products has been never easier, because we could access the user-friendly documentation we needed. Although a broad range of very different products was required, specification was done efficiently, which is what we expect from a top European manufacturer.”

This plant is one out of four current projects planned to help with wastewater collection in the city of Mashhad. The plant covers 30% of the population and when the other projects are built, this will complete the city’s wastewater infrastructure.

For more information about Grundfos wastewater treatment and transport, please see our detailed pages here.

Products supplied:

• 17 pcs SE1 wastewater pumps with S-tube® impeller
• 2 pcs SEV wastewater pumps with SuperVortex impeller
• 12 pcs high flow, heavy duty S wastewater pumps
• 11 pcs AMG mixers
• 3 chlorination systems, each with a capacity of 40 kg/hr
• Chlorine gas neutralisation system suitable for 1000 kg of chlorine gas


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