부착미생물을 이용한 폐수의 혐기성 처리시 온도의 영향

양병수,진현국,정형숙 한국물환경학회 1986 한국물환경학회지 Vol.2 No.1

The effects of short-and long-term temperature change on organic removal rate and gas production rate were evaluated with the treating the synthetic wastewater composed of glucose and non-fat dry milk in an up flow floating anaerobic digester. Some results from this study are summarized as the followings. During the period referred to as a steady-state condition in an up flow floating anaerobic digester due to the fact that the relative changes in both COD removal rate and gas production rate are sufficiently small, biological solids continually accumulated as operating time elapsed. The activity of the accumulated biological solids could offset a decrease in organic removal rate and gas production rate because of temperature drop. These results imply that high organic removal efficiency can be obtained at even relatively low operating temperature when large biological solids is maintained in digesters. The composition of the produced biogas was nearly not changed during the short-term temperature drop and gas production resumed at the same rate as soon as the temperature restored to initial level. The effects of short-term temperature drop on attached growth anaerobes are not so significant as that on suspended growth anaerobes. It seemed to be because of the difference in biomass in digesters.

低濃度 廢水의 嫌氣性 處理에 關한 硏究

梁秉洙 釜山水産大學校 1987 釜山水産大學 硏究報告 Vol.27 No.1

Laboratory investigation was conducted to evaluate the mixing effects on organic removal efficiency in treating low-strength artificial wastewater in the reactor modified by combining anaerobic filter and upflow anaerobic sludge blanket. Some results from this study were summarized as follows: Using the modified reactor the low-strength wastewater like municipal sewage could be treated with 90% S-COD removal efficiency at hydraulic retention time of 6 hours. At the constant organic loading of 0.5 kg COD/㎥-day, organic removal efficiency and effluent COD concentration are proportionally increased as influent COD concentration ranged from 125mg/ℓto 500mg/ℓ. Mixing effects on organic removal efficiency are evident and optimum mixing speed is found to be about 50 rpm. Placing the granular sludge into the reactor seemed to be very effective in achieving short start-up period, and thus steady-state condition was achieved after about 4 weeks.

압력 및 용존산소 농도가 활성슬러지에 미치는 영향

양병수,신현무,정형숙,류동춘,윤종호,정병곤 한국환경과학회 1995 한국환경과학회지 Vol.4 No.3

This study was conducted to evaluate the effects of pressure and dissolved oxygen concentration on the activated sludge and to determine the optimum depth of deep shaft process. Some results from this study were summarized as follows. 1. It is considered that low sludge product in the activated sludge system maintaining high dissolved oxygen concentration is attributed to the increase of endogeneous respiration rate caused by the increase of aerobic zone in the sludge floc. 2. The increase of dissolved oxygen concentration does not affect to the increase of organic removal efficiency greatly and therefore the limiting factor is the substrate transfer into the inner part of floc. 3. The yield coefficient, Y is decreased in proportion to the increase of oxygen concentration. In this study, Y values arre ranged from 0.70 to 0.41 according to the variation of dissolved oxygen concentration from 18.0㎎/ℓ to 258 ㎎/ℓ. 4. The optimum depth of deep shaft process should be determined within the limits of non-toxicity to the microorganism and it is about 100m in this study.

단일 모듈 반사경을 이용한 태양열 집열 시스템의 설계, 제작 및 온도측정 시험연구

양병수,양우,서태일,손창우 한국금형공학회 2019 한국금형공학회지 Vol.13 No.1

Currently, the world is paying keen attention to the production of renewable energy along with environmental issues, and the share of renewable energy in the world is rising above that of nuclear power. Especially when Korea, which is heavily dependent on foreign countries, needs to reconsider its national competitiveness due to the recent high oil prices, the government's energy policy is to develop and use renewable energy that replaces fossil fuels. In particular, solar energy, the most actively studied and commercialized field of renewable energy, is the main research for solar energy and is commercialized and used. However, the efficiency of solar energy has already reached saturation. Studies are also focusing on increasing the reflectivity of solar energy to increase efficiency. Therefore, this paper proposes a solar collection system that can utilize solar energy rather than solar energy. The proposed solar heat collection system uses solar tracking systems to effectively collect solar energy, particularly those that can be easily produced using single-modular reflectors and have price competitiveness. In addition, temperature measurement experiments with temperature measuring sensors were conducted to ensure reliability in order to verify the results interpreted

Water Quality Control in the Semiclosed Culture System Growing a Flounder,Parali

양병수 부산수산대학교 환경문제연구소 1992 環境問題硏究論文集 Vol.3 No.-

온산만 해역의 수질조사 (Ⅰ)

양병수 부산수산대학교 1982 부산수산대학교 연구보고(자연과학편) Vol.22 No.2

질소 및 인 제거를 위한 기존 폐수처리장 개선방안에 관한 연구

양병수,박남배,이재관 한국물환경학회 1990 한국물환경학회지 Vol.6 No.1

This research is aimed to suggest any possibilities of upgrading nitrogen and phosphorus removal in the exsisting activated sludge process with simple modification. The comparition between a partially aerated (A/O) and fully aerated activated sludge process was made at different mixing and aeration time, and sludge recycle to evaluate the effect of compartalized reaction tank on COD, nitrogen and phosphorus removal. The COD removal efficiency showed up to 95% in the A/O process as well as fully aerated activated sludge process. In the A/O process the substrate removal efficiency remained constant irrespective of anoxic/oxic reactor retention time ratios. Nitrogen and phosphorus removal efficiency in the A/O process was higher than that in the fully aerated activated sludge process. The efficiency in the A/O process was strongly affected by recycling rate. The total nitrogen removal efficiency increased with increasing recycle rate in the range of 25% to 200%. Phosphorus removal efficiency in this process trended to increase as the anoxic reactor volume in the system increased. Sludge settleability improved greatly as the first reactor volume to total reactor volume decreased.

Water Quality Control in the Semiclosed Culture System Growing a Flounder, Paral

양병수 부산수산대학 해양과학연구소 1992 연구논문집-부산수산대학교 해양과학공동연구소 Vol.24 No.-

온산만 해역의 수질조사(1)

양병수 부산수산대학 해양과학연구소 1983 연구논문집-부산수산대학교 해양과학공동연구소 Vol.15 No.-

반폐쇄 순환여과식 넙치양식장의 수질제어에 관한 연구

양병수,정병곤,이헌모 한국수산학회 1992 한국수산과학회지 Vol.25 No.3

넙치양식장의 수질관리 및 제어 방안을 검토하기 위하여 같은 조건에서 양식되고 있는 유수식 및 순환여과식 양식장을 선택하여 상호수질의 비교 평가를 행하였다. 두양식장 공히 COD, PO₄-P 및 SS의 최대농도는 급이와 동시에 나타났고 2시간 이내에 평상농도로 회복되어 일정한 농도로 거의 유지되었다. NH₄-N의 경우 유수식에는 급이후 시간 경과에 따라 농도차이가 별로 없으나 순환식의 경우는 급이후 2시간 이후에 다소 증가하는 경향을 보였다. NH₄-N을 제외한 COD, PO₄-P, SS 및 TIN의 농도는 순환여과식에서 다소 높은 경향을 보였다. 이는 처리 시스템내에 축적된 유기부유물이 무기화에 기인된 것을 평가되었으며, 이것이 질산화율을 떨어뜨리는 결과를 초래한 것으로 사려되었다. 유수식 및 순환여과식의 수질에 직접적인 영향을 주는 해수 교환율이 양식장마다 크게 다르게 나타나 이에 대한 최적화가 시급한 것으로 나타났다. A comparative evaluation of water quality in the existing semiclosed fish culture system was made to improve the system management. From the comparison of water quality between the flow-through mode and the recycle mode of the semiclosed system, the malfunctioning of the settling channel deteriorated water quality and reduce the nitrification rate in the recycle mode. The peak concentrations of COD, PO₄-P and SS in the fish tanks appeared just after feeding, and then decreased to normal levels within two hours. However, the NH₄-N concentration increased slightly after two hours of feeding in the recycle mode. The water exchange rate was directly related to the water quality in the semiclosed fish culture system. Water quality in a semiclosed system of flounder culture in Korea was evaluated to improve the fish culture system management skill with particular emphasis on enhancement of water quality. From the comparison of water quality between the flowthrough mode and the recycle mode of the existing semiclosed system, the followings were found. The peak concentrations of COD, PO₄-P and SS appeared just after feeding, and decreased gradually to normal levels within two hours. However, the ammonia nitrogen concentration in the recycle mode tended to increase after two hours of feeding. Concentrations of all the water quality parameters except ammonia in the recycle mode were slightly higher than those in the flow-through mode. These were attributed to the mineralization of organic debris accumulated in the RBC and the submerged filter unit due to the poor functioning of the settling channel. Consequently, the average nitrification efficiency of the recycle mode was 22% that was not effective than might be expected. The water exchange rate was directly related to water quality in the semiclosed fish culture system. The rate should be optimized based on water quality to reduce the running cost of the fish culture system.