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Extraction and application of bottom sediments in a closed cycle

Mazur Kamila, Eymontt Andrzej, Wierzbicki Krzysztof

Journal of Water and Land Development

2021

no. 51

265--271

Human activities in relation to aquatic ecosystems result in significant economic losses in the form of contamination of water sources, deteriorating its quality and therefore its availability in lakes, water bodies and even in soil. Hence the need for systematic revitalisation or reclamation of water ecosystems. Such actions, in order to be rational, require a detailed understanding of the causes, and then the use of appropriate technology. The need for the above-mentioned actions result from the weather changes that have been noticeable in recent years, as well as environmental pollutants increasing water eutrophication in reservoirs and stimulating the development of some species of cyanobacteria. These cyanobacteria can cause serious water poisoning, especially in water supply systems. Therefore, a rational, comprehensive technology for the removal of bottom sediments and their processing into organic and mineral fertiliser has been developed with properties similar to manure. It also creates opportunities to improve the structure of soils thanks to the supply of organic carbon, the loss of which was found, among others, in also in soils of Poland and EU. These new possibilities of revitalisation hitherto unknown make it possible to a large extent, compliance with environmental requirements when revitalising water reservoirs and soil.

Zwiększenie żyzności gleb i wydajności pastwisk pod wpływem nawożenia obornikiem

KuÎakov V., Leonidova T., Siedova J. G.

Woda-Środowisko-Obszary Wiejskie

2011

T. 11, z. 3

137-144

W pracy przedstawiono wyniki wieloletnich badań wpływu nawozów organicznych na żyzność gleb i produktywność pastwisk z runią o różnym składzie botanicznym. Stosowanie nawozów organicznych przyczyniło się do zwiększenia plonowania wieloletnich pastwisk (użytkowanych w ciągu 64 lat) o 51 i 71% w warunkach nawożenia obornikiem co 4 lata w ilości 10 i 20 t·ha-¹ i o 75% nawożonej runi wysokotrawiastej, użytkowanej przez 10 lat. Nawożenie znacznie zwiększało podstawowe wskaźniki żyzności gleby - zawartość próchnicy, azotu, fosforu i potasu.

The paper presents results of long-term studies on the effect of organic fertilisers on soil fertility and the productivity of pastures with different botanical composition. Organic fertilisers increased the yield of permanent pastures (used for 64 years) by 51 and 71% when applied every fourth year at a rate of 10 and 20 t·ha-¹, respectively, and the yield of tall-grass sward used for 10 years by 75%. Fertilisation markedly increased the content of humus, nitrogen, phosphorus and potassium - basic indices of soil fertility.