So coal ash needs to be recyled
Coal combustion residuals (CCR) landfills of most power plants in Russia will reach their design capacity in 10-15 years. This forecast was given by Yulia Chizhova, Lead Expert of Operations and Process Management Department of OGK-2 PJSC, when she was speaking at the session “Trends and innovations in ecology” of the International Forum on Industrial Safety on Wednesday, BNA reports.
Generation of coal combustion residuals is a common burden of all coal-fired power plants. About 25 million tons of coal ash are generated in Russia every year and 1.5 billion tons of CCR have been accumulated by now”, Chizhova said. She added that at 80% of power plants, CCR landfills either have reached their capacity or approached the limit.
However, coal ash can be recycled. Chizhova told that the kind of recycled product depends on the grade of coal combustion waste. Residuals of different grades can be used in production of concrete, items and material that become solid when heated, in roads construction.
Yet, the projects that are being developed by industrialists face certain obstacles when it comes to implementation, Chizhova noted. Recycling plants turn out to be too expensive and dumping CCR on top of other wastes requires additional permits.
Coal combustion residuals currently account for 95% of all by-products of power plants. Of this amount, 85% is disposed in landfills which, in total, occupy about 20 thousand sq.km across Russia.
In Europe, from 70% to 90% of CCR is recycled. A high rate of coal ash beneficial reuse is marked in India where CCR have been actively used for bricks production since the end of XX century. The International Forum on Industrial Safety is held in St. Petersburg every year. In 2018, it is the 16th time. This year the Forum venue is Hilton Hotel St. Petersburg Expoforum. The conference was attended by more than 170 people from different states. The organizer is GCE Group.
Source: Business News Agency