MOSCOW, Jan. 31, 2020 (Press Release) -Segezha Group Forest Industry Holding (part of Sistema JSFC) will invest RUB 805 million into modernization and upgrade of waste treatment facilities of the main employer of Segezha, JSC Segezha Pulp-and-Paper Mill. The program, aimed at reducing the amount of harmful emissions into the atmosphere at all currently operating technological flows, is expected to take three years to implement.
It is a well-known fact that the Segezha Pulp-and-Paper Mill specializes in production of sack paper for industrial and consumer packaging as well as sulfate unbleached pulp. The process of cooking the pulp leads to accumulation of malodorous sulfur-containing compounds in the pulping liquor. Due to this fact, and also in order to improve the environmental situation in the city, the mill will upgrade the waste treatment equipment. More modern and technologically more advanced equipment will be installed.
In particular, the company plans to replace precipitators on soda recovery boilers at the thermoelectric power station providing the enterprise with steam and electricity. HPP-2, one of the main sources of air emissions consists of three soda recovery boilers (SRBs), which return the earlier produced sulfates into production, thus making the process cyclical. Each SRB has been equipped with a special precipitator to clean the air emissions. The program will include replacement of precipitators on two of three currently existing SRBs, which will help lower the amount of emissions significantly. The third SRB has been fitted with a special precipitator to capture and clean the air emission. The filter, installed in 2018, cost RUB 200 million. At present the efficiency of the precipitator on the fourth SRB exceeds 99.5%.
In addition to replacing the equipment, the enterprise will undertake measures to control the quality of atmospheric air. The mill will also study the physical influences on the atmosphere so that the area of the sanitary protection zone around the PPM could be approved. Considerable money will be dedicated to monitoring of malodorous gas emissions in the areas next to residential districts.
Segezha Group has been working on systemic measures to minimize air emissions for a number of years. For instance, in 2018 the Segezha PPM added a new Valmet-made multi-fuel boiler to its technological equipment. The total cost of building the MFB amounted to RUB 3.5 billion. Its filters allow to improve gas purification efficiency to more than 99%. Today the MFB also produces additional electrical energy for production needs, while also helping solve the problem of waste reclamation. Operation of the MFB helped lower considerably the emission of sulfur dioxide, because instead of mazut, the boiler generally uses wood chips, bark and wood byproducts as fuel. The launch of the MFB helped lower mazut consumption by 30%.
“Segezha has every resource necessary to gradually change the ecological situation for the better,” says Anton Fadeev, Chief Ecologist of the Technical Directorate of JSC Segezha PPM. “The company has dedicated more than RUB 800 million to purchasing cutting-edge gas-cleansing equipment; we have professional and qualified specialists in place, and it is obvious that the top management is committed to implementing these plans in practice. These events will provide a considerable effect on improving the quality of the environment in the city.”