best available technologies for manure treatment - Baltic Green Belt

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Best Available Technologies for manure treatment baltic sea 2020 Best Available Technologies for manure treatment baltic sea 2020 ANNEX E: TABLES WITH SHORT DESPRIPTION OF LIVESTOCK MANURE TREATMENT TECHNOLOGIES Ref No. 94 Constructed wetlands Brief description Description of the effect on leaching (positive or negative) of N and P Constructed wetlands mean an area, where a liquid fraction is flooded into. The area is grown with a catch crop, which will capture the N, P and other residues. The crop can be harvested and digested in a biogas plant, for instance. The liquid fraction that is let to the area is typically cleaned up to an economic optimum, In order to minimise the area of the wetland. Examples of constructed wetlands: In the USA such wetlands are used for the disposal of the liquid fraction that are collected from feedlots (Foged, 2009), in Holland for reject water from a nitrificationdenitrification plant (Foged, 2009), and in Denmark they are seen in connection to high-tech biogas plants, also for reject water. The effect shall typically be seen in combination with the entire effect of the livestock manure treatment facility to which the constructed wetlands belongs. Innovation stage Investment price, Basic Variable Operational costs, per tonnes per kg saved N or P leaching Complexity of implementation Research Pilot Practice Foged, 2009 Major references Prices are probably similar to prices of lagoons. Typically 50,000 Condition for leaching reduction effect Scenarios II - V 40 Low Certainty of information Prices Medium Effect on leaching Medium Varying with the concrete situation. Medium – can be constructed at all farms, but typically the wetlands are only a small part of a complex livestock manure treatment plant. 80 80
Best Available Technologies for manure treatment baltic sea 2020 Best Available Technologies for manure treatment baltic sea 2020 ANNEX E: TABLES WITH SHORT DESPRIPTION OF LIVESTOCK MANURE TREATMENT TECHNOLOGIES Ref No. 111 Official P norms for fertilising Brief description Description of the effect on leaching (positive or negative) of N and P Official P norms for fertilising. EU has no demands for official P norms for fertilising, but they have anyway been introduced in Finland, Lithuania, Sweden and Germany, in most cases as a maximal application rate per ha, independent of the crop grown. P fertiliser norms are internationally convened via HELCOM, and can furthermore be imposed via EU’s Water Framework Directive. Official P fertiliser norms would hinder an annual spreading of P above some average levels for the typical environmentally safe application of P. The norms would, however, not consider the P leaching risk from specific fields. Research Pilot Practice Innovation stage Investment price, Basic Variable Operational costs, per tonnes Low Low Low per kg saved N or P leaching Complexity of implementation Major references Condition for leaching reduction effect CBMI Scenarios II to V. Certainty of information Prices High Effect on leaching High Low Low 81 81
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