• Title/Summary/Keyword: Liquid Pig manure

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Situation and Composting Probability of Livestock Manure Generated from Kangwon-do (강원도내 가축분뇨의 오염현황 및 퇴비화 가능성 검토)

  • Kim, Joung-Dae;Park, Joon-Seok
    • Journal of the Korea Organic Resources Recycling Association
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    • v.10 no.1
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    • pp.75-86
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    • 2002
  • This study was performed to investigate situation of livestock manure generated from Kangwon-do and to evaluate its composting probability. The scale of livesrock-farming is bigger and bigger in Korea. Regulation based on the heads of livestock is slightly different from that based on livestock-farming household. So it is needed ro evaluate regulations for livestock head and livestock-farming household. Composting and liquid fertilization were thought to be appropriate technologies to the trearment of Korean cattle and pig manures, respectively. Generation quantity of pig manure was the greatest among pig, Korean cattle, cow and chicken manures. Pig manure generated the greatest amounts of BOD in Kangwon-do. Pig manure contained nitrogen, Korean cattle manure contained $K_2O$, and chicken and pig manures contained $P_2O_5$ in great amount. Alternative ratio of livestock manure to crops-fertilizer was 51% for nitrogen, 38% for $K_2O$, and 34% for $P_2O_5$.

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Effect of the Application of a Suspended and a Mixing-in-Pipe Type Aerator on the Liquid Fertilization of Pig Manure Slurry (현수, 배관 내 혼합 폭기방식 적용이 돼지분뇨 슬러리의 액상 비료화에 미치는 영향)

  • Jeong, Kwang Hwa;Kim, Jung-Kon;Khan, Modabber Ahmed;Kwag, Jung-Hoon;Han, Duk-Woo
    • Journal of the Korea Organic Resources Recycling Association
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    • v.22 no.4
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    • pp.62-71
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    • 2014
  • Three types of diffuser systems were manufactured and applied to investigate the effect of liquid fertilization of pig manure slurry by application of aeration processes. In the first type reactor, commonly used diffuser system, which diffuse air upward by diffusing aerator fixed at the bottom of the reactor is installed. In case of the second type, air diffuser is installed 10 cm above of the bottom of a reactor. In the third type reactor, the venturi-type air diffuser is installed at circulation pipe, which return pig slurry in the reactor(mixing-in-pipe process). The pig manure slurry separated to solid/liquid was flowed into the experimental reactor, and left as it for one week to precipitate solids. The concentration of organic matter, T-N, T-P and BOD in the raw pig manure slurry flowed into the reactor of bottom-fixed type aeration process were 1.82%, 4,400 mg/L, 360 mg/L and 13,542 mg/L, respectively. After aeration the concentration of organic matters, T-N, T-P and BOD in the slurry were 2.01%, 4,400 mg/L, 420 mg/L and 16,824 mg/L, respectively. The concentration of organic matter, T-N, T-P and BOD in the mixing-in-pipe type changed from 1.58%, 3,700 mg/L, 260 mg/L and 15,735 mg/L to 1.96%, 4,000 mg/L, 340 mg/L, and 18,098 mg/L, respectively. Changes of the concentration of organic matter, T-N, T-P and BOD of the pig manure slurry collected from the middle layers of two aeration reactors; bottom aeration process and the mixing-in-pipe process, were 10.4%, 0%, 16.7% and 24.2% and 24.0%, 8.1%, 30.8% and 15.0%, respectively. The thickness of foam layer generated on the surface of pig manure slurry in aeration tank was thinner in mixing-in-pipe reactor than bottom-fixed type aeration reactor.

A Study on Manure Separator Using Screw Press for Dairy Farms (I) - Factorial Tests for Design of Dairy Manure Separator - (낙농가를 위한 스크루 압착식 축분 고액분리기 연구 I - 젖소용 축분 고액분리기 설계요인시험 구명 -)

  • Yu, Byeongkee;Kim, Hyuckjoo;Lee, Sunghyoun;Kim, Jungkon;Ahn, Heekwon;Ra, Changsix
    • Journal of Animal Environmental Science
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    • v.20 no.1
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    • pp.1-8
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    • 2014
  • The study on design criteria of solid-liquid separator for dairy farms was done by testing various screens, presses, and RPMs of screw auger with remodeled screw-press type pig-manure separator. The moisture content of separated solid increase from 68.3% to 74.2% as auger rotating speed increased from 9.8 to 29.2 RPM at 34.8 kPa of pressure and 1.0 mm of slit wedge wire screen condition. The moisture contents of separated solid were 72~77%, work efficiencies were 16~18 kg/min at 1.0 mm of slit wedge wire screen. The efficiency was higher than one at 0.5 mm of slit wedge wire screen, which was used to separate for pig manure. The best work efficiency was 18 kg/min at 42.5 kPa, 1.0 mm slit screen. The separated solid moisture content was 75% at this condition.

Status of Anaerobic Digestion Facility for Pig-slurry in Korea (국내 가축분뇨 혐기소화시설 현황 및 운영실태 분석)

  • Jeong, Kwang-Hwa;Kim, Jung-Gon;Han, Duk-Woo;Kwag, Jung-Hun
    • Journal of Animal Environmental Science
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    • v.20 no.1
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    • pp.27-34
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    • 2014
  • This study was conducted to survey and inspect the currently operating anaerobic digestion facilities for animal manure. Recently, the number of anaerobic digestion facility for livestock manure is on the rise thanks to growing interest in developing alternative energy. A anaerobic digestion system has been constructed in large scale farms or animal manure public resource center. Currently, most animal manure anaerobic digestion facilities in operation are producing biogas from the pig slurry which contains 97% water. Methane gas can be used to operate a engine generator which then produces electricity. Anaerobic digestate, a by-product of digestion, is mostly utilized as a liquid fertilizer after curing processing. Only in a few cases, it can be discharged after wastewater treatment process. The problem of anaerobic digestate treatment is the imbalance of C/N ratio. The content of N was too high to keep it into normal process.

Monitoring of Microorganisms in Commercial Liquid Pig Manures in Korea (국내 유통 돈분 액비의 미생물 함량 모니터링)

  • Lim, Seong-Mook;Lee, Ji-Ho;Go, Woo-Ri;Kunhikrishnan, Anitha;Kim, Won-Il
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.6
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    • pp.1181-1184
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    • 2011
  • Total aerobic bacteria, Esherichia coli O157:H7, and Salmonella spp. were examined in commercial liquid pig manures. Commercial liquid pig manures (n=33) were collected from muck joint resource recovery plant at April, June, August, October 2009, Korea. Total aerobic bacteria were incubated at $37^{\circ}C$ for 24-48 hrs, and quantified as a colony-forming unit (CFU) $mL^{-1}$. Analysis of Esherichia coli O157:H7 and Salmonella spp. were followed by Korean Food Standards Codex method. Colony of Salmonella spp. was confirmed by API kit and real time polymerase chain reaction (PCR). Total aerobic bacteria isolated from fermented commercial liquid pig manures ranged from 2.8 to $24.3{\times}10^4\;CFU\;mL^{-1}$. Esherichia coli O157:H7 was not detected, and Salmonella spp. showed the low detection frequency at only 1 sample. This study suggests that continuous monitoring in commercial liquid pig manures is required to improve the agricultural food through management of agricultural land contaminated with liquid pig manures.

Inactivation of Escherichia coli in Surface Water of Saturated Soil with the Pig Manure-based Liquid Fertilizers by Ultraviolet Radiation (자외선에 의한 가축분뇨 액비 시용 논 표면수 중 대장균 사멸율 변화)

  • Kim, Min-Kyeong;Jung, Goo-Bok;Hong, Seung-Chang;Kang, Seong-Soo;Kwon, Soon-Ik
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.3
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    • pp.368-370
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    • 2011
  • Liquid manure fertilizer drived from pig slurry is a valuable source of nutrients for crop production. However, there is no study for environmental assessment regarding microbial quality to apply liquid manure fertilizer. Therefore, this study aimed at quantifying the level of environmental impact on fecal coliform (Escherichia coli or E. coli ) survival in saturated soil such as paddy field. Surface water samples were collected up to 168 and 11 hours under natural sunlight and artificial ultraviolet radiation, respectively. The inactivation rate of E. coli under natural sunlight increased gradually after 48 hours. However, the inactivation rate of E. coli under artificial ultraviolet radiation increased linearly over time. Our findings suggested that the ultraviolet radiation is the limited factor on E. coli survival in surface water of saturated soil. This result will provide useful and practical guideline to applicators of agricultural soil in deciding appropriate handling and time frames for preventing pollution of water quality for sustainable agriculture.

Changes of Soil Properties in Corn (Zea mays L.) Fields Treated with Compost and Liquid Fertilizer (가축분뇨 퇴.액비가 시용된 옥수수 밭토양 특성 변화)

  • Kim, Min-Kyeong;Kwon, Soon-Ik;Kang, Seong-Soo;Jung, Goo-Bok;Kang, Kee-Kyung
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.3
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    • pp.473-478
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    • 2011
  • A wide diversity of liquid fertilizers and composts produced from the livestock manure in Korea is commonly applied to agricultural lands as an alternative of chemical fertilizers. However, their effects on the crop production and environmental impacts are still vague. The current study was conducted to understand the effects of the pig manure-based liquid fertilizer on the growth of Zea mays L. and soil properties. Four different liquid fertilizers were treated to each cultivated upland plot located in Gyeong-gi province, Korea while no fertilizer (control A) and a chemical fertilizer (control B) were treated to separate plots for comparison. The liquid fertilizer treatment did not make a significant difference in the fresh weight of Zea mays L. compared to the controls. This is probably due to the nutrient residues carried over from the last year fertilization. Electric conductivity (EC) and organic matter contents in soils were increased right after the liquid fertilizer treatments compared to the controls. However, soil pH was maintained as the same as the level of control A. A long-term effect of the continuous treatment of the manure based liquid fertilizer will be carried out in the successive study.

Effects of Ozone Treatment to Pig Liquid Manure on Reduction of Odorous Gases (돈분뇨 액비의 악취저감을 위한 오존처리 효과)

  • Jeong, J.W.;Yoo, Y.H.;Park, K.H.;Kam, D.H.;Choi, H.J.;Kim, T.I.;Cho, Y.S.
    • Journal of Animal Environmental Science
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    • v.13 no.3
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    • pp.161-170
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    • 2007
  • Ozone from a pilot-scale ozone generator was treated on fermented pig liquid manure stored in a storage tank in order to reduce odor substances during the process of fermented liquid manure production. The group of ozone treatment showed one less than the organic matter compared that of the control. The preferable condition for characteristic changes was when the ratio of BOD to COD was less than 1.5. Ozone treatment showed better oxidizing power than control as it removed more suspended solids and had less methyl isobutyl ketone(P<0.05). Odor reduction measured by olfactory method was higher in ozone treatment than in control.

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The Nutrients and Microbial Properties of Animal Manure and Spent Mushroom Compost Tea and the Effect of Growth of Lettuce (Lactuca sativa L.) (가축분뇨와 폐버섯 퇴비차의 양분 및 미생물적 특성과 상추의 생육에 미치는 영향)

  • Ryoo, Jong-Won
    • Korean Journal of Organic Agriculture
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    • v.19 no.4
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    • pp.589-602
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    • 2011
  • In this study, experiments were conducted to determine the effect of different compost teas on plant growth reponses and yield of leaf lettuce. Compost tea is a liquid extract of compost obtained by mixing compost and water for a defined period of time. The pig manure and spent mushroom compost were made by steeping compost in water. Compost tea was aerated from 24 hours and molasses and kelp were added as supplements. The four types of compost were tested growth of lettuce. EC of animal manure compost tea was higher than that of spent mushroom compost tea. Mineral nutrients were significantly higher in animal manure compost tea compared with spent mushroom compost tea. Compost tea contains nutrient and a ranges of different organisms. The beneficial fungi and actinomycetes were prominent in a spent mushroom compost tea. Compost tea from animal manure had the higher numbers of total bacteria. The actinomycetes densities were high in spent mushroom compost tea. But actinomycetes were not founded in animal manure compost tea. The growth characteristics of lettuce in animal manure compost tea were higher than those of spent mushroom compost tea. And also SPAD value in leaf was high in plot treated with animal manure compost tea. The fresh yield of lettuce in animal compost tea was higher by 181% that of control plot. The effect of compost tea on growth of lettuce was largely attributable to mineral nutrient.

The Changes of Solid, Nitrogen and Phosphorus Concentrations in Pig Slurry Stored at Various Depth of Slurry Storage Tank (돼지분뇨슬러리의 액비조내 저장깊이별 고형물 및 질소, 인의 함량분포에 관한 연구)

  • Jeong, Kwang-Hwa;Chung, Eui-Soo;Park, Chi-Ho;Kwag, Jung-Hoon;Choi, Dong-Yoon;Yoo, Yong-Hee
    • Journal of Animal Environmental Science
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    • v.12 no.3
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    • pp.161-168
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    • 2006
  • This paper describes the changes of characteristics of pig slurry according to storing depth. Most of the substances containing pollutants, such as were Management of manure and wastewater from animal confinement facilities is a critical factor for pollution control. With proper treatment processing method in both solid and liquid forms, it can be used as a fertilizer and soil conditioner. In Korea, liquid-manure handling system is very popular because its treatment and application is easy and labor saving. In the storage tank treatment, the period of fermentation process and solids-liquid separation averages six months and the supernatant liquid is being used as a fertilizer. In this study, the changes in chemical characteristics of pig slurry at varying depths of the storage tank were investigated. Results showed that the pH value of the fermented pig slurry was > 7, while the major pollutants such as BOD, SS, N and P were highest in the bottom of the tank. Therefore, the above findings proved that varying depths in the storage tank can influence the concentration of pollutants of the fermented pig slurry.

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