Livestock Housing System

 

Technology

Livestock Category

Environmental Impact

Documentation

Remarks

Cooling of manure (flush tube barns) Pigs

Ammonia: Up to 30 %. The reduction is calculated on the basis of the formula: 0,85*x-0,004x2 (x=W/m2)

Odour: Up to 20 %. The reduction is calculated on the basis of the formula:  0,77*x

MELT Expert Recommendation

Admitted to List of Environmental Technologies in 2018.

 

Cooling of manure (wire-type barn cleaner) Pigs

Ammonia: Up to 34 %. The reduction is calculated on the basis of the formula: 1,66*x-0,02*x2)

No reduction of odour emissions

MELT Expert Recommendation

Admitted to List of Environmental Technologies in 2018.

JH Acidification NH4+

Pigs

64% reduction of ammonia emissions

No reduction of odour emissions

MELT Expert Recommendation

VERA Verification Statement for JH Forsuring NH4+

Admitted to List of Environmental Technologies in 2012.

Revised in 2014.

This technique can on special terms substitute natural surface crust.

JH Smellfighter 

In combination with JH Acidification

Pigs

51 % odour reduction

Same reduction of ammonia emissions as JH acidification in pig barns

MELT Expert recommandation

Admitted to List of Environmental Technologies in 2018.

JH Acidification NH4+

 

Cattle

50% reduction of ammonia emissions

No reduction of odour emissions

Documentation of the technology by the Danish Environmental Protection Agency

Temporarily admitted to List of Environmental Technologies by special agreement with the Danish Environmental Protection Agency.

This technique can on special terms substitute natural surface crust.

Daily removal of slurry in mink cages

Mink

27% reduction of ammonia emissions

No reduction of odour emissions

MELT Expert Recommendation

VERA Verification Statement for daily removal of slurry in livestock housing systems for minks

Admitted to List of Environmental Technologies in 2013.

Remarks on daily removal of slurry

Removal of slurry in mink cages twice a week

Mink

27% reduction of ammonia emissions

No reduction of odour emissions

MELT Expert Recommendation

VERA Verification Statement for removal of slurry twice a week in livestock housing systems for minks

Admitted to List of Environmental Technologies in 2013.

Remarks on removal of slurry at frequent intervals

 

Removal of slurry in livestock housing systems for fattening pigs weekly (flush tube barns)

Fattening pigs i 

No reduction of ammonia emissions

20% reduction of odour emissions

MELT Expert Recommendation

Admitted to List of Environmental Technologies in 2015.

Manure belt for laying hens in cages

Laying hens

30-36% ammonia reduction at respectively two and three weekly removals of manure.

No reduction of odour emissions

Documentation of the technology by the Danish Environmental Protection Agency

Temporarily admitted to List of Environmental Technologies by special agreement with the Danish Environmental Protection Agency.

Manure belt for laying hens in barns

Laying hens

54-66% ammonia reduction at respectively two and three weekly removals of manure.

No reduction of odour emissions

Documentation of the technology by the Danish Environmental Protection Agency Temporarily admitted to List of Environmental Technologies by special agreement with the Danish Environmental Protection Agency.

Point exhaust ventilation in livestock housing systems for fattening pigs

Pigs

Reduction of ammonia emissions depend on the efficiency of the air cleaner attached. The reduction is calculated on the basis of the formula: Overall effect = 0.7 × E – 12

Reduction of odour emissions depend on the efficiency of the air cleaner attached. The reduction is calculated on the basis of the formula: Overall effect = 0.39 × E + 9

MELT Expert Recommendation

Admitted to List of Environmental Technologies in 2014.

Rokkedahl Energi

Heatexchanger for Poultry houses

Poultry

30 % ammonia reduction

No reduction of odour emissions

 MELT Expert Recommendation Admitted to List of Environmental Technologies in 2016.