• Proceedings of the Korean Society for Bio-Environment Control Conference
• /
• 2001.04b
• /
• pp.69-70
• /
• 2001

포도주 부산물이 퇴비와 혼합처리 시용에 따른 고추생육에 미치는 영향을 구명하기 위해 평창군 비가림재배 시설하우스 농가에서 수행하였다. 초기 생육기인 정식 후 15에는 고추의 초장은 유의차가 인정되지 않았으나 정식 후 기간이 경과함에 따라 높은 증가추세를 나타내었으며, 경경의 경우 정식 후 45일, 75일에는 유의차(p>0.05)가 인정되었다. 대조구(돈분발효퇴비 2,000kg/10a)가 0.53cm에서 1.67cm로 1.14cm 증가하였는데, 처리구 T4(포도주부산물 400kg＋돈분발효퇴비 1,000kg/10a)는 0.5cm에서 1.74cm로 1.24cm 증가하여 대조구에 비하여 8.7% 높은 증가율을 보였다. 각 처리구의 엽록소 함량은 45일에 증가하다가 75일에 다시 감소하는 현상을 나타내었으며, 처리 15일에서 T1(포도주부산물 200kg＋돈분발효퇴비 2,000kg/10a)과 대조구 사이에 유의차가 인정되었으며, T1(포도주부산물 200kg＋돈분발효퇴비 2,000kg/10a)이 대조구(돈분발효퇴비 2,000kg/10a)보다 2.6이 높은 56.1로서 가장 높았으며, T4(포도주부산물 400kg＋돈분발효퇴비 1,000kg/10a)에서는 53.4로 대조구와 같은 수준을 나타내었다. 엽면적은 정식 후 45일에서 T4(포도주부산물 400kg＋돈분발효퇴비 1,000kg/10a)가 60.0$\textrm{cm}^2$로 가장 높게 나타났다. 홍고추의 주당 수량은 돈분발효퇴비와 포도주부산물을 같이 시비한 처리구가 대조구(돈분발효퇴비 2,000kg/10a)에 비하여 감소현상을 보였는데 이러한 현상은 생육후반기에 암모니아 가스에 의해 작물의 피해가 발생하여 수량이 감소된 것으로 사료된다.

• Korean Journal of Soil Science and Fertilizer
• /
• v.45 no.4
• /
• pp.532-539
• /
• 2012

This study was carried out to investigate the effect of substrate to inoculum ratio on ultimate methane potential ($B_u$) from piggery wastes. BMP(Biochemical methane potential) assays were executed for the three samples that have different organic characteristics (Filtrate of pig slurry, LF; Thermal hydrolysate of piggery sludge cake, TH; Mixture of LF and TH at the ratio of 4 to 1, Mix), and $B_u$ values obtained from BMP assays were compared with the theoretical methane potential ($B_{th}$) of each samples. While $B_u$ values (0.27, 0.44, and $0.46Nm^3\;Kg^{-1}-VS_{added}$) of TH sample that was pretreated with thermal hydrolysis were below the $B_{th}$ at all S/I ratios (0.1, 0.3, and 0.5), and $B_u$ values of LF (0.64 and $0.53Nm^3\;Kg^{-1}-VS_{added}$ for the S/I ratios of 0.1 and 0.3, respectively) at the lower S/I ratios of 0.1 and 0.3 exceeded the $B_{th}$ values ($0.418Nm^3\;Kg^{-1}-VS_{added}$). And also biodegradability ($B_u/B_{th}$) of LF sample were obtained as 152.07%, 122.67%, and 95.71% at the S/I ratios of 0.1, 0.3, and 0.5, respectively, and unreasonable $B_u/B_{th}$ values were presented at lower S/I ratios of 0.1 and 0.3. $B_u$ and $B_u/B_{th}$ of Mix sample showed a similar tendency with those of LF sample. Therefore, TH sample by thermal hydrolysis pretreatment showed lower anaerobic biodegradability than those of other samples (LF and Mix) and ultimate methane potentials of LF and Mix samples were overestimated in the lower S/I ratio of 0.1 and 0.3.

• Journal of Bio-Environment Control
• /
• v.7 no.2
• /
• pp.91-108
• /
• 1998

This study was carried out to survey basic information of swine farms on the machine holdings. facility type. management of manure by farm scale and operation, and then to develop the mechanization model. Manual feeding was common for sows and nursing sows. but automation feeding was normally furnished for weaners. growing pigs and castrated male pigs. Water supplies was completely automated for all of the surveyed swine farms. Fully mechanized and automated system would not be feasible and affordable for the small scale farms breeding less than 500 heads. Because the environmental control for the nursing sows and weaner was important, some swine houses were constructed with the windowless type. However, the furnished rates ranged from 22.2% to 44.4% of the surveyed nursing sow and weaner houses at the farm scales. In the future, a computerized ventilation system would be commended for the efficient use of heat energy and to maintain the desirable temperature of swine buildings. Over-investment for large scale farm and over-crowded pigpen of small farm would cause wasting construction expenses and spreading epidermic diseases Hence, the size of swine building should follow the recommended scale. The fermentation drier was recommended for the manure management. Urine could be recycled or discharged after treating by the activated sludge process.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.17 no.2
• /
• pp.93-100
• /
• 2009

This research was performed to figure out the optimal mixing ratio of food- to livestock wastewater for the best degradation of organic matter in the anaerobic digestion. The presence of various microorganisms, such as Escherichia coli and Staphylococcus aureus, was also investigated in both wastewater in this process. Enteric bacteria were only found in livestock wastewater, whereas pathogenic bacteria like S. aureus were detected in both wastewater. The optimal mixing ratio of food- to livestock wastewater for the best mineralization was found to fifty to fifty, with reduction ratios of $BOD_5$, CODcr SS as 23.2%, 24.7%, 19.7%, respectively. Hygiene of the digested sludge was also analyzed by counting the number of total colonies and various pathogens. Enterobacteriaceae including E. coli were barely detected in 10 days after reaction. Meanwhile, S. aureus was gradually reduced during reaction, even showing 1,000~5,000 CFU/mL in final days.

• Journal of Animal Environmental Science
• /
• v.8 no.1
• /
• pp.9-16
• /
• 2002

This study was conducted to develope the new solid separating system which can be efficiently and economically removed the solid parts in high pollutants concentration of pig slurry. The pollutants concentration, BOD$_{5}$ , COD and SS of the slurry used in this study was 15,990($\pm$2,389)mg/l, 20,004($\pm$5,512)mg/l and 26,486($\pm$5,935)mg/l, respectively. After removal of solid part in slurry, the pollutants concentration, BOD$_{5}$, COD and SS was change into 5,617($\pm$690)mg/l, 5,553($\pm$633)mg/land 1,456($\pm$341)mg/l, respectively in the Fixed biological membrane tank. The reduction of the pollutants concentration of suspend liquid through membrane will be allowed to greatly improve the water purification by an Activated sludge method. This separating system consisted of a temporary storage, a circulating tank and a Fixed Biological membrane tank. A temporary storage which has a draining system of screw type and an aeration device played a tremendous role in draining the solid by filled an aeration of 0.3 l/min. A Fixed Biological membrane tank of which a styrofoam filled in a 2/3 volume as a Biological media was fixed by a stainless steel net (pore size : 0.5mm) to separate the liquid layer of influx in them. The separating system efficiency factors were the speed of screw motor, cycle number of slurries in a circulating tank and moisture contents of solid effluent through the screw path. Although the pollutants concentration was very variable in temporary storage, the final concentration of $BOD_5$ and SS, except COD of the suspended liquid in a Fixed biological membrane were not different regardless of cycle number of a circulating tank. Moisture contents of effluent from temporary storage was 73% under the speed 1 ppm of screw motor and 62% under the 1/4rpm of it.