Projects & Project References
Projects, a closer look.
Design, fabrication, transportation and installation of 9 steel wastewater treatment packages for the Rasht Mehr Housing Project.Completion: 2011
- Fresh Water Packages / Phase 12, South Pars -Iran Marine Industrial Company
- Industrial Wastewater Treatment Packages / Kermanshah Petrochemical Complex- Kermanshah Petrochemical Company
- Gas Gathering and NGL Recovery Project / Siri Island- NIOC Engineering & Construction Company
- Complete Steel Treatment Packages / Nematabad
- Mazandaran Province Rural Development / Jihad-e Sazandegi
- Complete Steel Treatment Packages /Gohar Baran
- Mazandaran Province Rural Development / Jihad-e Sazandegi
- Complete Steel Treatment Packages / Haftkhal
- Mazandaran Province Rural Development / Jihad-e Sazandegi
- Complete Steel Treatment Packages / Soleymanabad
- Mazandaran Province Rural Development / Jihad-e Sazandegi
- Complete Industrial & Sanitary Wastewater Treatment Package – Pars Khodro- Pars Khodro Company
- Complete Steel Wastewater Treatment Packages – Pars Khodro -Pars Khodro Company
Rasht Mehr Housing Steel Packages
The pumping station equipment and systems included:
- Electric Pumps
- Overhead Crane
- Valves, Fittings and Piping Systems
- Elevator-Type Mechanical Screens
- Penstock Gates
- Access Covers
- Ventilation System
- Step-Down Transformer
- Transformer Installation Equipment
- Diesel Generator
- Electrical and Control Panels
- Site Lighting System
Earthing System
Goldsht District Pumping Station
Integrated Pumping and Transmission Solutions
Mojan provides engineering, equipment supply and construction services for pumping stations associated with water and wastewater projects.
Our scope includes pumping equipment, electrical and control panels, mechanical equipment, valves, fittings, piping systems and other components required for fluid transfer systems, selected and implemented according to the technical specifications and operational requirements of each project.
Selected References
5,000 m³ Intermediary Storage Tank Pumping Station – Pardis New Town
Location: Tehran – Km 28 of Saveh Highway
Capacity: 690,000 m³/day
Storage Tank Capacity: 5,000 m³
The project included the construction of:
- 6,000 m of Ø1,400 mm polyethylene wastewater transmission pipeline using open-trench installation
- 3,500 m of Ø1,400 mm polymer-concrete wastewater transmission pipeline using pipe-jacking technology
Parand New Town Pumping Station
The project included complete site mobilization and preparation for the construction of concrete structures and auxiliary buildings, construction of the treatment plant’s concrete tanks and industrial buildings, equipment installation, system commissioning, and operation until final handover.
Site mobilization included the construction of facilities required for company specialists, supervision personnel and the client, with an area of approximately 200 m², as well as workers’ facilities covering approximately 120 m².
The project also included the installation and operation of:
- Concrete Batching Plant
- Cement Silos
- Backhoe Loader
- Concrete Mixer Trucks
- Dumpers
- Concrete Mixers
- 135 kVA Diesel Generator
- Water Storage Tank
More than 2,000 m² of steel formwork and all associated accessories were supplied.
The civil works included approximately:
- 3,500 m³ of concrete works
- 320 tons of reinforcement steel
- 7,500 m² of formwork
Approximately 480 m² of industrial buildings were also constructed, including:
- Control Building
- Electrical/Panel Building
- Chemical Building
- Blower Building
The project also included the installation of all mechanical, electromechanical, electrical, control and instrumentation equipment, as well as pre-commissioning and final commissioning activities. The wastewater treatment plant was operated by the project team until permanent handover.
Ilam Gas Refinery Industrial WWTP
Due to the presence of oil at concentrations of approximately 3,482 ppm, API and DAF units are utilized to separate oil and grease and reduce their concentration to approximately 28 ppm in the treated effluent.
The API unit consists of two tanks, each with a capacity of 875 m³, equipped with a stainless-steel bridge mechanism for collecting floating oil.
Sludge and oily sludge generated during the treatment process are also collected by the bridge mechanism. A dedicated oil collection pipe is provided for removing floating oil from the wastewater surface.
Two screw pumps are installed for the collection and transfer of settled sludge.
The wastewater discharged from these units is subsequently conveyed to the aeration and clarification stages.
Following disinfection, the treated effluent can be reused for landscape irrigation or discharged to surface water in accordance with applicable requirements.
Fajr Petrochemical Wastewater Treatment
The industrial and sanitary wastewater generated by Bandar Imam Petrochemical Complex, with a total capacity of 30,000 m³/day, enters Manhole A15 and is conveyed by gravity to the Central Wastewater Treatment Plant.
The treatment process is designed for the removal of screenings, oil and grease, and suspended solids. The wastewater passes through a series of treatment units including:
- Screening
- Emergency Storage Tank
- CPI Unit
- Equalization Tank
- Rapid Mixing
- Slow Mixing
- DAF Unit
The wastewater is then transferred to the MBBR biological treatment system and clarification units for further treatment to meet the required discharge standards for surface water.
The treated effluent from the clarification stage is combined with cooling tower blowdown and, when required, raw water. A flow of approximately 40,000 m³/day is then transferred to the UF system, followed by the RO system.
The RO-treated water is stored in a 6,000 m³ storage tank and reused as Process Water within the Bandar Imam Petrochemical Complex.
Bandar Imam Petrochemical Central WWTP
The Shahriar Wastewater Treatment Plant was designed and constructed by the company to serve an equivalent population of approximately 242,000, with an average flow rate of 40,000 m³/day.
The main treatment units include:
- Manual Coarse Screens
- Distribution Chamber
- Pumping Station with Archimedean Screw Pumps
- Mechanical Screening
- Grease and Grit Removal Unit
- Parshall Flume
- Equalization Tank
The biological treatment process is based on the SBR (Sequencing Batch Reactor) process.
Four treatment basins were provided for the SBR process, with each basin being filled over a period of approximately 1.5 hours. The aeration phase operates for approximately 2.5 hours using aeration mixers.
The treated effluent is collected and transferred to the settling tank through decanters. The clarified effluent then flows to the UV disinfection unit.
Excess sludge is transferred to a belt thickening system and subsequently to an aerated sludge digestion unit. The final sludge dewatering stage is carried out using belt filter presses.
Shahriar Wastewater Treatment Plant
The Iran Mall Wastewater Treatment Plant has a treatment capacity of 3,030 m³/day.
A portion of the treated wastewater is reused for irrigation, while the remaining portion is used as feedwater for the RO system and subsequently utilized in cooling towers.
The main treatment units include:
- Screening
- Grit and Grease Removal
- Equalization Tank
- Anoxic Biological Treatment
- MBBR
- Clarifier
Following the clarification stage, the treated effluent is divided into two streams.
The stream designated for irrigation is disinfected through chlorination and passed through sand filters before being pumped outside the site.
The second stream is disinfected using UV and chlorine shock dosing, followed by ultrafiltration (UF) before being transferred to the RO unit for further treatment and reuse in the cooling tower system.
Treatment Iran Mall Wastewater Treatment Plant
The Malayer Drinking Water Treatment Plant utilizes a conventional treatment process incorporating rectangular clarifiers.
The treatment plant was designed and constructed with a capacity of 500 L/s (1,800 m³/h), considering a maximum daily demand factor of 1.3, and with a minimum of two parallel process trains.
The main process units include:
- Raw Water Intake & Pre-Sedimentation Basin
- Primary and Final Disinfection
- Rapid Mixing
- Coagulation and Flocculation
- Rectangular Sedimentation Basins
- Filtration
- Filter Backwash Water Recovery System
- Sludge Thickening and Dewatering
- Clear Water Storage Tank
- Pumping Station and Transmission Pipelines
Malayer Water Treatment Plant
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