Agroecologic valuation of organic waste in different technologies of storage

Shindarska, Z. and Zaharinov, Botio and Marinova-Garvanska, S. M. and Kirov, V. and Baykov, Bayko (2013) Agroecologic valuation of organic waste in different technologies of storage. In: Proceedings : 10th International Symposium Modern Trends in Livestock Production, Belgrade, 2 - 4 October, 2013. Institute for Animal Husbandry, Belgrade, pp. 580-589. ISBN 9788682431695

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A study has been conducted, based on three types of fertilizers / cow, pig and bird manure/ and bioshlam /received from clearing station/ that have
been storage in different technologies in order to make an agroecologic valuation. The different types of fertilizers and wastewater in different technologies of storage
have been analyzed according to the following parameters: Dry matter (DM) ,Organic matter (OM), Organic Carbon (OC), Nitrogen Kjeldahl (N), Nitrogen Ammonium (N -ammonium), Nitrogen nitrate (N- nitrate), Sulfates (SO4) ,
Calcium Oxide (CaO), Magnesium Oxide (MgO), Patassium (K), P (Phosphorus), pH (H2O) and heavy metals – arsenic (As), Cadmium (Cd), Chromium (Cr), Copper (Cu), Mercury (Hg), Nickel (Ni), Lead (Pd), Zinc (Zn). The received
results show: variation of the percentage of dry material /from 92,12% to 4,03%/ according to the technology of storage. The way of storage has no essential
influence on the content of carbon in the various stable fertilizers, where pig manure has the highest value of nitrogen in all technologies of storage. Near to the
recommendable optimal values of C:N is stayed/dry/ and fresh/hard/ in all three fertilizer types. The technology of storage by the different manure types has no
influence on the content of heavy metal. Exception can be observed as far as the zinc content in stale /fluid/ pig manure is concerned. High content of dry material
can be observed in bioshlam received from clearing station. In both ways of production of variation in the content of dry material the ratio between the biogenic
macro elements C:N remains. The free nitrogen forms (N-ammonium and Nnitrate) in bioshlam are higher to other organic waste in both technologies of storage. No values over the critically admissible in bioshlam are observed in both technologies of production.

Item Type:Book Section
Uncontrolled Keywords:cow manure (fertilizer), Pig manure, Bird manure, Technology for storage, agri- environmental indicators (assessment), waste water treatment plan, bioshlam
Subjects:Earth and environmental sciences > Biology
Earth and environmental sciences > Ecology. Environmental preservation
ID Code:2186
Deposited By: доц. д-р Ботьо Захаринов
Deposited On:23 Apr 2014 14:50
Last Modified:24 Apr 2014 06:25

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