• Journal of Industrial Technology
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• v.3
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• pp.75-85
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• 1983

This study is conducted to provide useful fertilizer or soil conditioner of sludge from nightsoil treatment plant. Several possibilities present themselves. The major sink for disposal of waste sludge is the land, and in this case values will be measured primarily in terms of agricultural benefits. According to the result of sludge drying experiment, the drying rate with mixing once a day was more increased by three times than the state without mixing. And in sludge, N was 7-9%, P was 0.85-4.14%, and coliform groups in dried sludge were 75 MPN/gr.

• Journal of the Korean Society of Food Culture
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• v.10 no.3
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• pp.167-174
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• 1995

A hazard analysis which included watching operations, measuring temperatures of foods throughout preparation and display, and sampling and testing for microorganisms of total plate counts and coliform bacteria was conducted in various phases of product flow of Naeng-myeun (Cold noodles) and Pi-bim bab (mixed rice) prepared at Korean restaurants. Large numbers of total plate counts were counted from the cooked foods after handling and holding. Ingestion of these foods must be considered high risk. Critical control points identified were, pre-preparation, food handling after cooking, and holding on display in product flow of Nang-Meon and pre-preparation, preparation, and holding on display in product flow of Pi-bim bab. It need for effective quality control of Nang-Meon and Pi-bim bab that training program consist of surveillance, education of the staff, standard operation procedures, forbidding dangerous processes and control of critical points.

• Journal of Preventive Medicine and Public Health
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• v.10 no.1
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• pp.59-61
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• 1977

We are calling the erupting ground water as drugwater or mineral water in Korea and thinking those water is good for health from ancient. But most of them were used by mountainer as drinking water and food making water. Authors tried to investigate the evidence of contamination by user on the 10 erupting ground water and gained following results: 1. All of the mineral, waters on 10 area in Seoul were unfitable to drinking water standard. 2. In the view of the bacteriology 80% were contaminated by coliform group. 3. The highest value of the free carbon dioxide contents were 652.96 ppm at Sam Sun Mineral Water.

• Korean Journal of Veterinary Research
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• v.28 no.2
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• pp.397-404
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• 1988

A total of 593 mastitic pathogens were isolated from the clinical mastitic milk of dairy cattle in Gyeonggi area from March 1984 to February 1988. The mastitic pathogens were further studied bacteriologically and examined for susceptibility patterns to 10 antibiotics. The results obtained were summerized as follows: 1. One hundred and seventy three pathogens were isolated in the first year of studies, 205 pathogens in the second year, 122 pathogens in the third year and 93 pathogens in the last year. 2. The pathogens isolated from clinical mastitis were more in summer than other seasons. 3. Staphylococcus spp (50%) and Streptococcus spp (18%) were the main pathogens in the first year of studies but coliforms (15%) and other bacteria (40%) were the main pathogens in the last year of studies. 4. Coliform mastitis was occurred only in summer and autumn. 5. Antibiotic susceptibility patterns of the same genuses from clinical mastitis infections in different herds and in different years varied greatly. Therefore, treatment should be selected on the basis of susceptibility test results.

• Journal of Korean Society of Water and Wastewater
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• v.25 no.6
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• pp.989-994
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• 2011

Nitrate contamination of groundwater is a common problem throughout intensive agriculture areas (non-point source pollution). Current processes (e.g. ion exchange and membrane separation) for nitrate removal have various disadvantages. The objective of this study was to evaluate electrochemical method such as electroreduction using bipolar ZVI packed bed electrolytic cell to remove nitrate from groundwater at field pilot. In addition ammonia stripping tower continuously removed up to 77.0% of ammonia. Bipolar ZVI packed bed electrolytic cell also removed E.coli. In the field pilot experiment for groundwater in 'I' city (average nitrate 30~35 mg N/L, pH 6.4), maximum 99.9% removal of nitrate was achieved in the applied 600 V.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.266-269
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• 2004

저장기간 중 통닭의 포장형태에 따른 가열감량은 저장 3일과 저장 6일에는 벌크포장은 낮고 비닐포장에서는 높아 통계적인 유의차이(p<0.05)를 보였으며, 전단력은 저장 1일보다는저장 3일이후에 증가하는 경향을 나타내었다. 보수력은 저장 3일에는 벌크포장이 가장 높아 저장 1일의 보수력과는 반대의 결과를 보였다. 총균은 저장 1일에서 포장형태와 관계없이 총균이 모두 검출되었으나 저장 3일과 6일에는 비닐포장에서는 총균이 검출되지 않았으며, 저장 9일에는 비닐포장에서 가장 많이 검출되었다. Coliform는 포장형태와 저장기간에 관계없이 거의 검출되지 않았고, E.coli도 포장형태와 저장기간에 관계없이 거의 검출되지 않았다. 지방산패도(TBARS) 값은 포장형태에 따라 차이는 없었고, 단백질변성(VBN) 값은 저장 3일에서는 벌크포장이 랩트레이 포장과 비닐포장에서 높았다.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.274-277
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• 2004

저장기간 중 닭고기 부분육의 가열감량은 저장 1일과 저장 9일에서 포장형태에 따라 차이는 없었으나, 전단력은 저장 6일에 랩트레이 포장과 진공포장 간에 통계적인 유의차이(p<0.05)가 있었으며, 보수력은 저장 9일에 렙트레이 포장과 진공포장 닭고기에서 통계적인 유의차이(p<0.05)가 있었다. 총균은 저장 9일에 랩트레이 포장이 5.26으로 가장 많이 검출되었으며, Coliform은 벌크포장과 랩트레이 포장은 저장 1일과 3일, 6일에는 검출되지 않았다. 지방산패도(TBARS) 값은 저장 3일에는 각 포장형태에 따라 벌크포장이 0.10mgMA/kg, 랩트레이 0.08mgMA/kg, 비닐포장 0.07mgMA/kg으로 통계적인 유의차(p<0.05)가 있었으나, 단백질변성(VBN) 값은 차이가 거의 없었다.

• Korean Journal of Environmental Agriculture
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• v.15 no.3
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• pp.355-361
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• 1996

The Purpose of this study was to investigate the effect of the Change in the operating conditions on rotary turning compost plants. The major parameters investigated were moisture content and mixing of the sawdust and pig farm wastewater. Pig farm scale composting plants with mixing rotary were used in this study. Wastes used for the study were sawdust, pig manure, urine and wastewater. When the moisture content was 75%, the compost product obtained from the plants had better physical characteristics than that obtained from the plants with moisture contents of 70%, 80% and 85%.(two a day mixing). When the turning was twice a day, the compost product obtained from the plants had better characteristics than that obtained from non-mixing.(moisture content 75%). C/N ratio, pH value and coliform bacterial population were stable in the compost.

• Journal of Korean Society on Water Environment
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• v.21 no.2
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• pp.176-183
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• 2005

Chlorination of wastewater is recently practiced in Korea. While many researchers have studied the kinetics of aqueous chlorine(HOCl) with nitrogeneous compounds and other organic/inorganic contaminants in drinking water, the researches of wastewater chlorination are relatively few. The purpose of this study was to investigate the chlorine decay kinetics and parameters on wastewater chlorination. Chlorine decay rate increased with increasing initial chlorine concentration. The parameters affecting chlorine decay rate were different in each wastewater treatment plant. One of the most important parameters affecting chlorine decay was initial chlorine concentration, and other parameters such as $NH_3-N$, total coliform, $UV_{254}$ and Fe were also affected. The decay ratio of chlorine was decreased with increasing initial chlorine concentration, and the disinfection efficiency showed good correlation with the decay ratio.

• Journal of Korean Society on Water Environment
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• v.26 no.1
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• pp.125-132
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• 2010

Characterization of sediment quality is important for the proper management of surface water quality, yet sediment has not been monitored sufficiently. In this study, fecal indicator microorganism concentrations of sediments in the Geum River Basin were monitored. Sampling was carried out at one paddy field, one lakeshore and five monitoring stations in the lower reach of the Geum River Basin. Surface waters and sediments were sampled four times during rainy season. Total coliform concentrations of sediments were 12 times higher in average to those of surface waters while E. coli concentrations of sediments were six times higher. No correlation found between indicator microorganism concentration between surface waters and sediments.