Government pushes use of power plant ash, gypsum in construction

06:00 | 15/05/2021 Environment Follow Ven.vn on

(VEN) - The Prime Minister has issued instructions on promoting the treatment and use of ash, slag and gypsum from thermal power plants, chemical and fertilizer factories as raw materials for production of construction materials and in construction works.

government pushes use of power plant ash gypsum in construction

Ministries mobilize for task

Instruction 08/CT-TTg clearly stated that the treatment and use of ash, slag and gypsum have not met set targets and consumption is not balanced with emissions. Large amounts of ash, slag and gypsum are stored in factory yards and continue to increase, with many landfills only capable of storing them for a few years.

To overcome these shortcomings, the Prime Minister asked the Ministry of Construction and related agencies to coordinate with relevant agencies in order to not only continue researching new applications for ash, slag and gypsum, but also to complete the formulation of technical standards, regulations and instructions on the treatment and use of ash, slag and gypsum as construction raw materials and to direct cement factories to increase the use of ash, slag and gypsum as additives.

The Ministry of Industry and Trade has taken the lead in inspecting the implementation of the ash, slag and gypsum treatment approved by emitting facilities, ensuring that the amount of emission stored in their yards does not exceed two years’ worth of production. It also requires coal-fired thermal power investors to choose technology and equipment in order to save fuel.

Large amounts of ash, slag and gypsum are still stored in factory yards

The Ministry of Natural Resources and Environment promulgates the guidance for the treatment of ash, slag and gypsum in the production of building materials, considers the use of ash, slag and gypsum in the production of building materials as the process of treating ash, slag and gypsum. In addition, the ministry also promulgates technical regulations and instructions on treatment and use of ash, slag and gypsum in order to revert the areas where mineral mining has been completed in accordance with the law on minerals and meet the requirements of environmental protection.

Expanding responsibilities

The Prime Minister also asked the Ministry of Transport to continue directing investors in projects using public investment capital to prioritize ash and slag use in traffic projects. The Ministry of Agriculture and Rural Development (MARD) is studying possible use of gypsum residue (phosphogypsum - PG) as raw material for fertilizer production, looking at a December 31, 2022 deadline. Moreover, the MARD continues to prioritize and support the implementation of scientific and technological tasks in research and use of ash, slag and gypsum as raw materials for production industries.

The Thanh Tuyen JSC in Quang Ninh Province uses the ash and slag of the Mao Khe Thermal Power Plant to produce construction materials

The instruction also requires the People’s Committees of provinces and centrally-run cities to only certify landfill areas for thermal power, fertilizer and chemical plants with maximum storage capacity for two years of production. In addition, the emission facility owners are responsible for organizing the treatment and consumption of ash, slag and gypsum generated in the production process.

In 2018 and 2019, the Ministry of Construction issued standards for using ash and slag produced by coal-fired

thermal power plants to level and build road. So far, 17 national standards have been issued for using ash and slag to

make bricks and unburnt brick additives.

Thu Huong

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Government pushes use of power plant ash, gypsum in construction

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