Odor Reducing

Causes of Livestock stench

• The number of livestock breeding continues to increase due to increased consumption of livestock products, but it has emerged as a social problem due to various complaints caused by the smell from livestock manure

Livestock stench Reduction Technology

• Feed control: Controlling stench by controlling protein content
• Processing the slurry inside the pigsty
  a. Drain the slurry in the pigsty manure early and clean regularly
  b. Spray almond skin's fermentation powder or probiotics into manure slurry in pig's cage
• Pigsty ventilation facility : There is a lot of dust in the air inside the pigsty, so it is necessary to control the amount of internal smell emitted to the outside during ventilation. Monitoring equipment for stench detection sensors (ammonia (NH3), Internal environment (temperature, humidity, ventilation volume, etc.), and stench monitoring, analysis, and control of pigsty
• Manure treatment facilities: Manure treatment in three forms: composting, liquefaction, and purification methods

• Feed control

  

• Processing the slurry inside the pigsty

  

• Pigsty ventilation Facility

  

• Manure treatment facility

  

Pigsty ventilation Facility

• Ventilation not only removes dust and stench in the pigsty, but also provides fresh air to pigs and maintains proper temperature and humidity inside the pigsty
• Pigsty consist of open and closed barns, and recently tend to be converted to closed barns

(Table 2) Main contents of the Ministry of Environment (Air Management Division) Comprehensive Odor Prevention Measures (2019-2028)

classification	Main Content
Full-scale sealing of pig farms (2020~)	Open-type barn → A step-by-step transition to Close-type barn(After collecting and treating stench, discharge)
	(2020) New licensed pigsty → (2022) New reported pigsty → (2024) Review of existing licensed pigsty, etc
Designation of facilities subject to prior notification of livestock facilities (2021~)	Making stench prevention measures mandatory and periodic self-measurement when designating facilities to be reported
	Exceeding the permitted standard for stench emission of the reported facility (Current) penalty → (if changed) Order to stop using
Change of emission acceptance criteria (2019)	Definition of stench outlet such as ventilation and window of a barn and reexamination of acceptance criteria for appropriate emissions
	Emission acceptance standard(current) company site boundary → (change) outlet (ventilation, window)
Introduction of an automatic stench management system (2022~)	The introduction of an automatic stench management system in the existing livestock area
	Automatic odor management system: ammonia sensor, notification information service, automatic pit cleaning, etc

Manure facility

• ① Bio-reaction tank facilities, ② Chemical Reaction Tank Facility, ③ Post-processing facilities, ④ Compost facility, ⑤ Stench reduction facilities