best available technologies for manure treatment - Baltic Green Belt

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
Best Available Techniques for manure treatment - for intensive rearing of pigs in Baltic Sea Region EU Member States Technical Report "Best Practice Manure Handling, Phase 2"
Ref No. 14 Separation by filter pressing
Brief description
Description of the effect on leaching (positive or negative)
of N and P
The principle is based on a system where the material is passing a specific type of filter (band filter). This
band filter is constantly turning on rollers to make the material moving and to gain pressure on the material,
and thereby the liquid part will pass the filter. Often the band filter separation is followed by a screw pressing
unit, to increase the dry matter content in the fibre fraction. The band filter is both efficient and has a good
capacity, but the investment is fairly high.
Band filter Content in fibre fraction
Capacity (t/h) N P % of total volume % DM (dry matter)
In case the livestock density in an area is the maximally
allowed according the Nitrates Directive, the application of
livestock manure would typically mean the double of the
needs of the crops concerning P.
By exporting the fibre fraction to areas with a low livestock
density, over-fertilisation and leaching of excess P can be
avoided.
8 - 12 29 % 73 % 9 % 35 %
NB: Data for band filter is with flocculation, see other table.
Innovation stage
Research
Pilot
Practice
Major references
1: Nielsen, 2008
2: EU Commission, 2003
Investment price
Basic Variable
~ 125.000 1,00 1,50
Condition for leaching
reduction effect
Scenarios II - V
Operational costs
per tonnes
Certainty of information
Prices High
Effect on
leaching
High
per kg saved N or
P leaching
No data
Medium
Complexity of implementation
There are several commercial plants/technologies on the
market, and is quite easily to install on the farm if the
conditions at the farm are suitable concerning stable
systems, storage tanks etc. But the investment and
complexity is fairly high, also due to the pre treatment as
flocculation.
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