Presentation is loading. Please wait.

Presentation is loading. Please wait.

Odour emission from livestock housing Assoc Prof. PhD. BUI XUAN AN Mobil 0913744166.

Similar presentations


Presentation on theme: "Odour emission from livestock housing Assoc Prof. PhD. BUI XUAN AN Mobil 0913744166."— Presentation transcript:

1 Odour emission from livestock housing Assoc Prof. PhD. BUI XUAN AN Mobil

2 Overview 1.Background odour emission 2.Odour research program in NL 3.Possibilities for odour reduction 4.Current and future research

3 air pollution Air pollution is defined as the presence in the outdoor atmosphere of one or more contaminants (pollutants) in quantities and duration that can injure human, plant, or animal life or property (materials) or which unreasonably interferes with the enjoyment of life or the conduct of business.

4

5 Sources of odour on livestock farms Manure  Livestock building  Outside yards and feedlots  Storage  Manure treatment  Manure application Animals Feed Storage dead animals

6 Odorous compounds Sulphides Volatile fatty acids Phenols Indoles Ammonia and volatile amines (CH3)2 – CH – CH2 – COOH N 3-CH3 – C8H6N CH3 – S – S – CH3

7 Processes and factors Environmental factors Feed AnimalUrine Faeces Manure

8 Processes and factors Feed and water intake Feed composition Protein concentration Amino acid composition Non Starch Polysaccharides Fermentation Species Health Fermentation Behaviour Kind of manure Slurry Liquid and solid manure Storage time Microbial activity Emitting area pH Storage method Emitting area pH FeedAnimal Urine Faeces Manure

9 Processes and factors Environmental factors Feed AnimalUrine Faeces Manure Temperature Ventilation rate Air speed Use of strawDust

10 Odour research program in NL Since 1990’s introduction of new housing systems designed for low ammonia emission (Green Lable systems) What about their odour emission?

11 Selected housing systems in the odour research programme Pig production Poultry production Both: Conventional and new housing systems with low ammonia emission

12 Pig housing systems Dry sows, farrowing sows, weaners and fatteners (conventional and low NH 3 emission) Low emission by: –reducing emitting surface of slurry and pens –cooling surface layer slurry –air scrubbing –group housing sows with straw

13 Selected pig housing systems

14 slurry 2,5 kg NH 3 / y Haye Hendriks Conventional system Metal or plastic slatted floor

15 Slurry Concrete slatted floor 1.2 kg NH 3 / y Reduction of emitting surface area Haye Hendriks

16 Diving cooling elements Metal or plastic slatted floor slurry 1.2 kg NH 3 / y Slurry cooling Haye Hendriks

17 Slurry Metal slatted floor 1.2 kg NH 3 / y Flushing gutters Flushing gutter Haye Hendriks

18 70 to 95% NH 3 reduction Ingoing air Outgoing air Filter material Sprinklers Removal drainwater Pump Liquid level Mixing tank Chemical air scrubber Haye Hendriks

19 Individually housed sows 4,2 kg NH 3 / y

20 2,6 kg NH 3 /y lying area Activity and excreting area Eating area Group housing of sows with straw Haye Hendriks

21 Group housing of sows with straw 2,6 kg NH 3 /y

22 8.3 kg NH 3 / y Farrowing with fully slatted floor Haye Hendriks

23 Slatted floors for weaners 0.60 kg NH 3 /y

24 Metal slatted floor Max m 2 per pig Slurry 0.17 kg NH 3 /y Reduction of emitting surface area weaned piglets Haye Hendriks

25 Poultry systems Laying hens, broilers, parental stock broilers, ducks (conventional and low NH 3 emission) Low emission by: forced drying of manure on belts forced drying of litter

26 Selected poultry systems

27 Floor housing for layers kg NH 3 / y

28 0.090 kg NH 3 / y Aviary system for layers Haye Hendriks

29 0.012 kg NH 3 / y Battery system with forced drying of manure Haye Hendriks

30 Odour sampling scheme Sampling 1 farm location per housing system Sampling during 2 periods: each period 5 samples in duplicate (2x5x2) Odour samples taken between a.m Dust filter at the inlet of sample tube

31

32

33 Results: means of odour emission fattening pigs Systemkg NH3/yOUe/s ConventionalConventional < emitting surface < emitting surface coolingcooling flushingflushing acid scrubbingacid scrubbing

34 Results: odour emission sows and weaners System kg NH3/y OUe/s Sows indiv.Sows indiv Sows group Sows group Farr. sowsFarr. sows Weaners, slatsWeaners, slats W < em.surf.W < em.surf

35 Group housing of sows with straw 2,6 kg NH 3 /y

36 Conclusions research pig housing systems No consistent relation between odour and ammonia emissions Restriction and cooling of emitting surfaces generally reduces both ammonia and odour emission

37 Results: means and variation of odour emission laying hens System kg NH3/y OUe/s Battery cages –slurry –dry manure dry manure Litter housingLitter housing Aviary housingAviary housing

38 Results: odour emission broilers, parental stock and ducks Systemkg NH3/y OUe/s Broilers litter Br. litter drying Par. st. broilers Ducks litter

39 Conclusions odour research poultry housing systems No consistent relation between odour and ammonia emissions between farms and concentrations within farms Battery cage and litter systems for laying hens showed similar odour emission levels Relative small effect of forced litter drying on odour emission

40 treatment of air methodperspective Biofilter+/- Air scrubber + Dilution+/- Ozon-- Active coal-- Additives- odour reduction: options for short term

41 pen factors & manure treatment methodperspective

42 odour reductions: options for long term feed: intake and composition pen-hygiene: behaviour en pen design manure treatment

43 Anaerobic treatment

44 Aerobic treatment

45 Composting

46 Odour filter

47 Ingoing air Outgoing air Filter package Sprinklers Water supply Drain water Water tray Pump Fan 70% NH 3 reduction Bioscrubber Haye Hendriks

48 factors affecting odour emission feed animal urine feces manure air manure treatment air treatment dilution of manure/slurry dilution of air additives feed intake and composition animal behaviour pen factors

49 Reference Aarnink A and Ogink N, Factors affecting odour emission from livestock housing and possibilities for reduction. Proc. International worshop in Odour Management Research at Taipei


Download ppt "Odour emission from livestock housing Assoc Prof. PhD. BUI XUAN AN Mobil 0913744166."

Similar presentations


Ads by Google