The purpose of this study is to develop the automatic water wank for rural living water with a built-in filter device. For this purpose, the author carrying out the design and production of devices such as a stacked plate filter, automatic water tank and water purification equipment, main control system and solenoid valve, solar cell, battery, water gauge, flowmeter and pump, etc. As a result, the author obtained very good results which satisfy all the research and development objectives planned. In addition, the water quality test results received, it is determined that the water is suitable for rural living water standards of the developed prototype.

In 2013, Chinese President Xi Jinping put forward to build “Silk Road Economic Belt”and "21st Century Maritime Silk Road”(One Belt One Road). “One Belt One Road” would also directly contribute to the continues growth of China's FDI. FDI is one of the key issues in the process of economic development all around the world. With the rapid development of China-Korea economic, the FDI between Korea and China is particularly attracting extensive attention. In this paper, by using South Korea to China's FDI as a carrier, the determinants of FDI from South Korea to China has been studies under conditions of both practical evidences and experience. In the aspect of practical evidence, green data KTL is introduced timely along with the use of PANELDATA data, which is the product with the development of global green economy, knowledge and technological innovation has been imported to econometric model as determinants. On the other hand, the FDI from China to Korea has been analyzed while with its successful experience. Results shows that GDP (market and the scale of economies), TIEC (Industrial clusters and regional attraction), WAGE (cost and factors), KTL (knowledge innovation and technology) are the determinants of South Korea to China's FDI. Selecting the target stage by stage, implementation of the Chinese localization, taking resource-oriented and making reasonable choice of business focus, concentrating its attention to technology innovation and patent protection is South Korea's successful experience to outward FDI.

2009년 1월 3일부터 12월 1일까지 11개월간 공업용수를 주변지역에 공급하는 A정수장 응집침전조의 상등수를 대상으로 실험을 진행한 본 연구는 RO막 전처리 장치로서의 압력식 섬유여과기인 PCF 여과기 2대를 직렬연결한 공정의 적용 가능성을 평가한 것이다. 성능평가는 SDI (Silt Density Index)를 통해 간접적으로 RO막에 대한 전처리 성능을 평가하였다. 실험 기간 동안 PCF Filter로 유입된 원수의 탁도는 평균 0.79 (0.28~4.01) NTU이었으며, 처리수의 탁도는 평균 0.16(0.04~0.50) NTU로 탁도 제거효율은 평균 77%이었다. 일일 평균 처리유량은 약 230 ㎥/day고 평균 역세유량은 8.7 ㎥/day로 평균 역세수량은 3.8%로 나타났다. 여과수의 탁도 및 SDI 값은 측정 전 보관시간에 따라 증가하는데 이번 실험에서 몇몇 시료는 1~11일 동안 보관한 후 탁도 및 SDI가 측정되었으며, 이들 전체의 평균 SDI 값은 3.6 (2.26~5.00)으로 RO 제조업체에서 RO의 수명보증을 위해 통상 요구하는 SDI 값인 5.0 이하를 나타내었다. 따라서 RO 전처리공정의 SDI 측면에서 2단 섬유여과 공정이 적합함을 알 수 있었다.

A water reuse system was designed for a demonstration plant by combining fiber filtration and electrolysis. A discharged dye wastewater after treated with biomedia was used in this study. It was found that an additional removal of suspended solids (SS) was feasible with 2‐stage filtration while electrolysis was not effective. Also, CODcr and CODMn were not removed with 2 ‐stage filtration but electrolysis resulted in about 26.9% additional removal. This indicates that electrolysis play an important role in organic removal. Removal of T‐N and T‐P was negligible with 1 and 2‐stage fiber filtration and low‐level electrolyte. However, with 2000 ppm of electrolyte, their removal efficiencies were about 83.1 and 60%, respectively, suggesting that the removal rates are well associated with the electrolyte concentrations. With high‐level electrolyte, colority was removed about 82% while chlorine ions were removed only about 10%. Therefore, to treat underground water containing high‐level salinity in the follow‐up study, based on the results in this paper, a combined system with selection of additional unit process and reverse osmosis will be designed.