Technological process of recycling nitrogen and phosphorus using an integrated station for flocculants dosing and geotextile bags.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25173154%3A_____%2F17%3AN0000042" target="_blank" >RIV/25173154:_____/17:N0000042 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Technological process of recycling nitrogen and phosphorus using an integrated station for flocculants dosing and geotextile bags.

Popis výsledku v původním jazyce

Currently, more than 50% of arable land in the Czech Republic is under the risk of soil erosion. The gradual loss of soil particles rich in nutrients and the decrease of soil organic matter causes a soil fertility reduction. The Czech landscape is rich in fishponds and fishpond systems. Fishponds have naturally a high potential of nutrient retention (especially phosphorus). Within this process, fishpond sediments, where the substance in question accumulate, play the key role. An interesting opportunity could be the application of fishpond sediment, mostly containing high amount of nutrients and organic matter, back on fields. The main task of this paper is to introduce a trial study of possible technological process of nutrient recycling from the fishpond sediment using suction dredger and geotextile bags. This method proved to be very effective – compounds usable in agriculture production were retained efficiently. Water from the geotextile bags that entered back the pond represented only one potential risk – high concentrations of N-NH4 (20-30 mg l 1), but the effluent was sufficiently diluted by the fishpond waters. After 31 days, the sediment was applied on the experimental field – a 6 cm thick layer contained by an order of magnitude more nutrients (N, P, K) than is usually applied. We assume that a slowly proceeding transformation of nutrients in compounds takes place and is available to vegetation during vegetation season. The project continues focusing on soil fertility characteristics and crop in next two years.

Název v anglickém jazyce

Technological process of recycling nitrogen and phosphorus using an integrated station for flocculants dosing and geotextile bags.

Popis výsledku anglicky

Currently, more than 50% of arable land in the Czech Republic is under the risk of soil erosion. The gradual loss of soil particles rich in nutrients and the decrease of soil organic matter causes a soil fertility reduction. The Czech landscape is rich in fishponds and fishpond systems. Fishponds have naturally a high potential of nutrient retention (especially phosphorus). Within this process, fishpond sediments, where the substance in question accumulate, play the key role. An interesting opportunity could be the application of fishpond sediment, mostly containing high amount of nutrients and organic matter, back on fields. The main task of this paper is to introduce a trial study of possible technological process of nutrient recycling from the fishpond sediment using suction dredger and geotextile bags. This method proved to be very effective – compounds usable in agriculture production were retained efficiently. Water from the geotextile bags that entered back the pond represented only one potential risk – high concentrations of N-NH4 (20-30 mg l 1), but the effluent was sufficiently diluted by the fishpond waters. After 31 days, the sediment was applied on the experimental field – a 6 cm thick layer contained by an order of magnitude more nutrients (N, P, K) than is usually applied. We assume that a slowly proceeding transformation of nutrients in compounds takes place and is available to vegetation during vegetation season. The project continues focusing on soil fertility characteristics and crop in next two years.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40103 - Fishery

Projekt

<a href="/cs/project/TA04020123" target="_blank" >TA04020123: Technologický postup recyklace živin z rybničních sedimentů s využitím sacího bagru, integrované stanice pro dávkování flokulantu a geotextilních vaků pro lokální aplikaci v mikropovodí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

10th International Workshop on Nutrient Cycling and Retention in Natural and Constructed Wetlands

ISBN

978-80-905483-3-6

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

53-57

Název nakladatele

ENKI, o.p.s.

Místo vydání

Třeboň

Místo konání akce

Třeboň

Datum konání akce

21. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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