MAPNA Parand Power Generation Company opened a sewage pump house this summer to transfer treated wastewater from the Parand city treatment plant to the combined cycle power plant.
Initially, Parand power plant relied on drinking water from Parand City in the southwest of the capital for its operations. However, after MAPNA Group took over the plant in 2013, studies revealed that freshwater sources would be insufficient for the steam units in the future.
Consequently, using treated wastewater from Parand City was proposed as a sustainable solution. This project aimed to ensure the power plant’s production while significantly conserving urban water resources.
MAPNA Parand Power Generation Company is committed to environmental sustainability and has invested in new phases of the Parand Water Treatment Plant.
They secured a 25-year contract with the region’s water and sewerage company to purchase wastewater, with proceeds funding the construction of new treatment plant phases. The MAPNA Group subsidiary’s share of wastewater amounts to 1,700 cubic meters per day.
The power plant’s major water consumption, especially in the first half of the year, is for irrigating green spaces, peaking at 600 cubic meters per day. The plant also requires some 400 cubic meters of demin water every day at the peak of its consumption.
To meet these needs, the company implemented a comprehensive water supply plan, including storage, additional treatment of wastewater, and modification of the irrigation system. Key projects included:
• Designing, supplying equipment, and building a supplementary treatment plant within the power plant
• Constructing a 400 cubic meter tank for incoming wastewater
• Building a seven-kilometer transmission line to transfer sewage from the treatment plant to the power plant
• Constructing a pump house at the Parand treatment plant
• Improving the green space irrigation system to utilize wastewater.
In 2020, the company began designing and constructing two concrete tanks, each with a 200 cubic meter capacity, and a supplementary water treatment plant. By December 2022, trial operations commenced.
The state-of-the-art supplementary treatment plant can process 48 cubic meters of wastewater per hour. After treatment, the wastewater is sent to the demineralized water production section.
A transmission line was necessary for the continuous operation of the supplementary treatment plant. After reviewing existing routes and considering regional obstacles, the optimal seven-kilometer route was selected and constructed. One significant challenge was installing the pump house within the Parand treatment plant, as the contract specified wastewater delivery outside the plant. Following an agreement, the pump house design began in December 2023, and its construction was completed by June 2024.