President Khurelsukh Ukhnaa expressed his gratitude to everyone involved in the construction of the new Central Wastewater Treatment Plant (WWTP), which aims to provide a healthy living environment for Ulaanbaatar’s residents and ensure ecological balance.

The President thanked the project leaders, relevant organizations, enterprises, engineers, and technical staff from both countries who participated in this massive development project. He noted that the facility is designed to meet the growing needs of the city for the next 20 to 30 years-making it a milestone project of a scale unseen in Ulaanbaatar for decades.

He recalled his time serving as Prime Minister, during which he made the decision to build the new WWTP, laid its foundation stone, and initiated the construction.

President Khurelsukh expressed his satisfaction that the WWTP, which consolidates the “Comprehensive Strategic Partnership” between Mongolia and China and serves as a symbol of friendship and cooperation between their peoples, is establishing the core conditions required for the city’s expansion and the reduction of environmental pollution.

The new plant, consisting of 55 buildings and facilities, can treat 250,000 cubic meters of wastewater per day, which is twice the capacity of the current facility. The facility will fully process its sewage sludge to generate electricity, covering 35% of its own internal energy needs. It means an annual energy savings of MNT 7-8 billion.

A complementary Water Recycling Plant, which integrates technologically with the main treatment facility, was also recently commissioned through a grant from the Millennium Challenge Corporation (MCC).

The feasibility study of the plant was developed by the French company Artelia Ville & Transport under a contract commissioned by the Governor's Office of the Capital City. General contractors were a joint consortium of China Tiesiju Civil Engineering Group and Beijing Construction Engineering Group.

The project involved 400 to 650 personnel from 17 domestic subcontracting companies, alongside more than 60 Chinese engineers and technical specialists.

"Despite facing major difficulties and obstacles such as the global pandemic, we are thrilled that the Central Wastewater Treatment Plant has been successfully commissioned thanks to the decisive actions taken by the government at that time. We have been training around 70 employees in China since 2023 to operate this facility," stated Turkhuu Ts., Head of the Ulaanbaatar Water Supply and Sewerage Authority.

The old Central Wastewater Treatment Plant, commissioned back in 1964, had a design capacity to receive 160,000-170,000 cubic meters of water per day.

Although it underwent three expansions and upgrades over the years, the city's rapid population growth caused pollution levels to spike by 3 to 5 times above acceptable limits. This severely degraded its treatment capacity and led to frequent technical and technological breakdowns.

Published Date:2026-07-01