It can be said that the issue of environmental protection has never been as concerned as it is now.Ministries, sectors, localities and businesses all strictly adhere to "must harmonize economic development with environmental benefits".For units producing electricity from coal, it is even more necessary in environmental protection.Aware of that responsibility, from the time it was put into operation, Nghi Son Thermal Power Plant has always balanced corporate interests with social responsibilities.Photo of Nghi Son 1 . Thermal Power PlantWith technology designed to burn Anthracite coal and heavy oil HFO (heavy fuel oil) to burn with support in the process of starting - stopping the unit.Because the fuel contains nitrogen and sulfur, the exhaust smoke contains NOx and SOx.However, with modern technology and operation in compliance with the processes and regulations, the emission parameters of Nghi Son 1 Thermal Power Plant are always controlled below the allowable value.Through discussions with the plant's leaders, the boiler of Nghi Son 1 Thermal Power Plant is equipped with Low Nox burner technology to optimize NOx in exhaust fumes.The system of OFA (Over Fire Air) shields in coal burners can be changed to adjust the combustion process and flame length in the furnace with the goal of reducing NOx concentration from the boiler.Since its inception, the first oil-burning nozzle, the ESP (ElectroStatic Precipitator) electrostatic precipitator has been put into operation, the modern ESP (ElectroStatic Precipitator) electrostatic precipitator with dust filtration efficiency up to 99,787 % helps to release smoke into the environment with a much lower dust concentration than specified <=170mg/Nm3 in all cases.Image of ESP . electrostatic precipitator systemIn particular, the smoke after going through the ESP electrostatic precipitator is sent by the smoke fan to the FGD (flue gas desulfurization) absorption tower system to eliminate SOx in the smoke with a reduction efficiency of over 95%.The smoke coming out of FGD is put on the chimney with a height of 205m which has been dedusted, NOx, SOx... so the concentration of emissions is very low, smoke before exiting the chimney is continuously monitored indicators through the system. CEMS (Continuous Emission Monitoring System) system and transmitted to the main screen of the Factory Gate, to the Department of Natural Resources and Environment and Vietnam Electricity for online monitoring.Image of FGD absorption tower system to reduce SOxTo comply with the Prime Minister's Decision No. 452/QD-TTg approving the Scheme to promote the treatment and use of ash, slag and gypsum of thermal power plants, chemical and fertilizer plants as raw materials. materials for the production of building materials and in construction works.Nghi Son Thermal Power Company has been approved by Power Generation Corporation 1 for the project on treatment and consumption of ash, slag and gypsum in Decision No. 514/QD-EVNGENCO1 dated December 28, 2018.Ash, slag, gypsum of Nghi Son Thermal Power Plant has been provided by TQC Quality Certification and Testing Center for product conformity assessment and certification for Nghi Son Thermal Power Plant. 1 according to Vietnamese quality standards and regulations, ensuring the quality of additives and materials for cement and concrete production.For the factory's production wastewater system designed to collect and treat different sources of wastewater in the chain, the wastewater treatment system is designed to treat wastewater from coal and slurry storage areas. sedimentation tank, regenerated wastewater from demineralization system, backwash wastewater of pressure filter and carbon filter, wastewater after treatment system contaminated with oil, non-oil contaminated wastewater, wastewater from FGD, wastewater from heater, wastewater from ESP and boiler wastewater and oil contaminated wastewater from generators, oil tanks, and transformers.Wastewater in the production process is also treated by physico-chemical methods, ensuring that the output wastewater reaches column B QCVN40:2011/BTNMT (National technical regulation on industrial wastewater).As for the source of domestic wastewater after the septic tank, it is led by a pipeline to the collection pit before the domestic wastewater treatment system.Domestic wastewater is treated by biological methods, ensuring that the treated water reaches the value in column B of QCVN 14:2008/BTNMT.Along with that, the wastewater discharged into the outside environment is continuously monitored by the automatic monitoring system and transmitted to the Factory Gate, Department of Natural Resources and Environment and Vietnam Electricity for online monitoring.With the motto of sustainable development associated with social responsibility, environmental protection is a top priority, Leaders and employees of Nghi Son 1 Thermal Power Plant continue to manage and operate to ensure the maintenance of the environment. maintaining emission targets to allowable values ​​for emissions as well as wastewater, contributing to the environmental protection of the whole society.Nghi Son 1 thermal power plant includes 2 units, each with a rated capacity of 300MW/h, put into commercial operation from December 2014 for unit 2, May 2015 for unit 2. 1. With the design of 3.6 billion KWh each year, the annual power output has always exceeded the assigned target, as of August 1, 2022 The plant has generated electricity on the national grid with an output 28,697,263,051 KWh, the units always operate safely and stably.Your comment has been submitted and will be visible once approved by the editor.The editorial board reserves the right to edit the comment content to comply with the content regulations of the Newspaper of Natural Resources and Environment.Head office: Lot E2, Cau Giay New Urban Area, Duong Dinh Nghe Street, Yen Hoa Ward, Cau Giay District, City.HanoiPublishing license number 100/GP-BTTTT issued by the Ministry of Information and Communications on February 18, 2022Editor-in-Chief: Hoang Manh HaDeputy Editor-in-Chief in charge of electronic newspapers: Le Xuan DungDeputy Editor-in-Chief: Ly Thi Hong DiepPhone: 024.37738729 – Fax: 024.37823995.Contact for advertising: 0913411239Reproduction in any form is prohibited without the written consent of the Natural Resources & Environment Newspaper