Nature protection technologies

3.5.4. Use of ash and slag for improving the properties of soil

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.1. Ash from stone coal as a source of ground biological layer for reclamation of devastated land

J. Wereszczaka, S. Pużyński, K. Kuglarz, I. Gluba, West Pomeranian University of Technology in Szczecin, Poland

The study was conducted on reclaimed ash-storage (N 53o13’10’’, E 14o26’53’’). Samples of ash from hard coal, sewage sludge and mixture of these two components produced in 2009 y., upon recommendation prepared by researchers from West Pomeranian University of Technology in Szczecin, were tested.

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.2. Potential utilization of brown coal fly ash in agriculture

M. Gibczyńska, G. Hury, P. Kujawa, M. Romanowski, West Pomeranian University of Technology, Szczecin, Poland

Soil-introduced ashes affect mainly physical and chemical properties of soil, i.e. its reaction, acidity, amount of aluminium exchangeable, capacity of sorption complex and water absorbing power.

Addition of fly ash significantly enriched soil in exchangeable calcium and magnesium. During second and third year of the experiment it has been observed that the effect of brown coal ash presence tended to get lower.

Applied brown coal ash, despite using large quantities, did not contribute to abundance changes of metals: zinc, copper, nickel, lead and cobalt in soil and did not affect crop size, its structure and biometric features of cultivated plants.

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.3. Perspectives of ash-and-slag materials usage in agriculture

L.V. Berezin, M.A Lee, Omsk State Agrarian University named after P.A. Stolypin, Omsk, Russia

V.R. Shevtsov, OJSC "Territorial Generation Company #11", Novosibirsk, Russia

Results of laboratory and field texts on ash-and-slag materials usage as an obligatory element during complex melioration of low fertility soils are presented in this article. Pilot studies showed that input of up to 1 tonn per ha Omsk TPPs' ash-and-slag materials to the soil increases effectiveness of agronomic experiments aimed at improving soil water and physical properties.

A field experiment on ash-and-slag materials input into the soil for summer barley was held in 2011 on the basis of the data acquired and with the help of working model of combined tool. The experiment showed yield increase by 1...2 centner per ha.

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.4. The biomass ash. Waste or useful by-product?

S. Stankowski, R. Maciorowski, M.Gibczyńska, West Pomeranian University of Technology Szczecin, Poland

 This paper is a short overview presenting the different areas of biomass ashes application in the agriculture and forestry. The advantages and disadvantages of biomass ashes as a source of nutrients for the plants are discussed.

The dynamic changes on energy suppliers market have been observed in Poland during last decade.  The EU policy by pressing great attention on the environment protection has great impact on the energy production sources balance. The emission CO2 quotas enforce the power companies to invest in renewable technologies, mainly wind farms and thermal combustion of plant biomass installations. This last technology, based mainly on fluidized bed combustors, is especially developed by electrical industry

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.5. Effects of hard coal ash irrigation on release of chemical elements

T. Wojcieszczuk, E. Meller, A. Sammel, S. Stankowski, West Pomeranian University of Technology in Szczecin, Poland

 Under laboratory conditions chemical composition of leachates from the soil fertilized with increasing doses of ash and chemical content of water passing through ash, ash+zeolite and ash+brown coal were determined. Additionally, chemical content of surface lysimeters water, the water passing through the profile as well as groundwater on the experimental object of power plant „Dolna Odra”, were analysed. The amounts of chemical elements, soluble in water, from ashes of different origin were compared.

Chemical composition of leachates was affected by the origin of hard coal, the method of fertilising the surface layer of pile and the dose of ash applied as fertiliser.

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.6. Biological conservation of the first section of Novocherkasskaya SDPP ash disposal area

I.V. Gurina, N.А. Ivanova, Novocherkassk State Land Reclamation Academy, Novocherkassk, Russia

Ye.А. Lysenko, Novocherkasskaya SDPP – a branch office of the “WGC-2”, Novocherkassk, Russia

 The results of biological conservation for the first section of Novocherkasskaya SDPP ash disposal area are given. On the grounds of carried out laboratory experiments in vegetative vessels for phytoamelioration during biological conservation for the first section of ash disposal area a perennial four-component grass mixture of melilot + awnless bromegrass + burnet + Hungarian sainfoin was recommended. This grass mixture was sown in the second 10-day period of April 2011. To the middle of vegetation good sod formation for the first section surface of Novocherkasskaya SDPP ash dump was observed and this made it possible to stop dusting and eliminate from water and wind erosion owing to developing and rooted plants of the perennial grass mixture that provided for grassing-down the recultivated area.

Part 3. ASH AND SLAG HANDLING

3.5. Applications of ash and slag from power coals

3.5.4. Use of ash and slag for improving the properties of soil

3.5.4.7. Monitoring of recultivated ash dumps of SDPPs

I.V. Gurina, N.А. Ivanova, P.А. Mikheyev, Novocherkassk State Land Reclamation Academy, Novocherkassk, Russia

V.G. Lukianov, A.N. Antonenko, Novocherkasskaya SDPP – a branch office of the “WGC-2”, Novocherkassk, Russia

 A system of monitoring indices for biological recultivation that includes observations of phytocenosis forming processes and changes taking place in the recultivative layer is proposed. The results of monitoring of biological recultivation for the second section of Novocherkasskaya SDPP ash disposal area using the proposed system of indices are given. For the period of 2005-2012 the successful growth and development of plants in grass mixture “Hungarian sainfoin + coach grass + awnless bromegrass” used for grassing down as well as substantial increase in biotic diversity of vegetation and settling down of fauna that was lacking earlier were stated. The monitoring results allowed to make a conclusion about proceeding positive processes stimulating accumulation of organic matter in the recultivative layer. Decrease in pH values and the content of heavy metals in the recultivative layer was established that is a positive factor achieved as a result of biological recultivation being carried out.