• 한국환경과학회지
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• 제12권3호
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• pp.359-366
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• 2003

Ecological society and energy conservative systems has become a subject of world wide attention. To examine the technologies of such systems as resource recycling society, this study is proposed for using rainwater as energy source and water resources in urban area. Useful informations for planning of utilizing rainfall as energy source, water resources, emergency water and controlling flood are discussed with model systems in urban area. It is calculated that the rate of utilizing rainwater, amounts of utilizing rainwater, substitution rate of supply water, amounts of overflow rainwater according to rain storage tank volume. By applying the past weather data, The optimum volume of rain water storage was calculated as 200m$^3$ which mean no benefits according to the increase of storage tank volumes. For optimum planing and control method at the model system, several running method of rainwater storage tank was calculated. The optimum operating method was the using weather data as 3hours weather forecast.

• 한국습지학회지
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• 제24권3호
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• pp.161-169
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• 2022

본 연구에서는 수원지방에서 효율적이고 타당한 빗물저류조의 용량을 평가하기 위하여 수원강우관측소의 월평균강수량, 일강수량변동곡선 및 일강우일수를 분석하였다. 빗물저류조 용량별 연평균빗물사용량 및 일평균저수량은 빗물저류조내 유입되는 일강수량, 일수요량, 빗물저류조의 용량 등을 일단위 연속방정식에 적용하여 산정하였다. 빗물저류조 용량별 연평균빗물사용량, 이용효율, 저류조 사용일수, 저류조의 일평균저수량, 일별수요량 등을 감안하여 빗물저류조의 용량을 평가하면 물의 재이용 관련 법령에서 제시한 활용강우량 50.0mm 이상은 과다한 빗물저류조의 용량인 것으로 판단된다. 따라서 지역별로 타당하게 제시될 일별 수요량, 빗물사용량에 따른 빗물저류조 용량별 편익, 빗물저류조 용량별 설치비용 등을 감안하여 빗물 저류조의 활용강우량 즉 빗물저류조의 용량을 결정하는 것이 합리적임을 보여주었다.

• 한국환경농학회지
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• 제18권3호
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• pp.245-249
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• 1999

저선량의 감마선이 조사된 대두종자로부터 자라난 작물체에 인공 산성강우가 미치는 영향을 알아보기 위하여 황금콩과 방사콩의 생육 양상을 조사한 결과 초장은 감마선조사 선량에 따라서만 생육 차이를 보였을 뿐 산성강우 무처리구(pH 6.00)와 처리구(pH 2.45와 2.20)간에는 큰 차이를 보이지 않았으며, 종자 저장기간에 따라서도 큰 차이를 보이지 않았다. 그러나 황금콩의 경우 생육 촉진을 위한 적정 조사선량이 산성강우 무처리구에 비해 처리구에서 낮아지는 경향을 보였다. 또한 피해 병징 양상은 산성강우 pH 2.20 처리구에서 심하게 나타났으며 방사콩에 비해 황금콩에서 산성강우 내성 효과가 컸으며, 종자 저장기간에 따라서도 차이를 보여 1995년산에 비해 1997년산 작물체에서 효과가 큰 것으로 나타났다. 그러나 방사콩의 생육 양상은 산성강우 처리 농도와 감마선 조사에 따라 큰 차이를 보이지 않았다.

• 한국환경복원기술학회지
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• 제24권6호
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• pp.109-119
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• 2021

Thermal environment of city is getting worse due to severe urban heat island caused by climate change and urbanization. Green roof improves the urban thermal environment and save the cooling energy in buildings. This study presented a green roof combined with a storage system that stores rain-water and supplies water through a wick and evaluated the temperature reduction effect as surface temperature and amount of evapotranspiration. For about a week, the surface temperature using a infrared thermal imager and the evapotranspiration by recording change of module weight were measured at intervals of 30 minutes from sunrise to sunset. The results show that the mean surface temperature of the green roof was 15.4 degrees lower than that of the non-green roof from 12:00 P.M. to 14:00 P.M. There was no significant difference between mean surface temperature of green roof with and without storage system immediately after rain, but more than a week after rain, there was a difference with average of 2.49 degrees and maximum of 4.72 degrees. The difference in daily amount of evapotranspiration was measured to be 1.66 times on average. As drought stress increased over time, the difference in daily amount of evapotranspiration and surface temperature between with/without storage system increased simultaneously. The results of the study show a more excellent cooling effect of green roof combined with the rainwater storage system.

• 한국환경생태학회:학술대회논문집
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• 한국환경생태학회 2008년도 추계 학술대회
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• pp.103-105
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• 2008

• 한국건축시공학회지
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• 제22권6호
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• pp.607-618
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• 2022

본 연구는 황토와 무기질 결합재의 수화반응을 이용하여 빗물저류조용 황토투수블록을 개발한 연구로서 제조과정의 산업부산물인 고로슬래그 미분말과 페로니켈슬래그 순환자원을 골재로 활용하고 황토투수블럭을 제작하여 물성분석을 하였다. 도심지 내 투수성 포장을 확대하고 공극이 막혀 투수기능 상실을 방지하여 우수유출저감용 빗물관리시설에 사용하기 위한 것으로써 도시지역에서 열섬현상과 도심 집중강우에 따른 도로침수 포장체 파손 등이 대한 방안으로 활용이 가능하다.

• 환경영향평가
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• 제15권2호
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• pp.111-119
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• 2006

In Korea, an environment-friendly concept of "rain re-cycling" was initially introduced in apartment complex planning and designs in the late 1990s. Although its application cases are extremely few, with the growing importance of rainwater utilization, introduction of rainwater management facilities in urban areas began to drawn keen attention. In urban areas also, plans to introduce rainwater management facilities in apartment complexes as infrastructure improving living environment, such as sewage treatment facilities are very urgently required. In order to introduce rainwater management facilities as infrastructure in an apartment complex, apartment complex cases that had introduced the facilities were reviewed first. In this study, a few applied rainwater management facilities in an apartment complex were surveyed(Infiltration barrel, Rubble porosity storage tank, Underground storage tank). As a result, problems in introducing rainwater management facilities in apartment complexes in Korea were identified.

• 한국농공학회논문집
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• 제61권3호
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• pp.101-112
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• 2019

This study developed selection criteria of small-scales reservoirs, having under $300,000m^3$ storage capacity, for the Emergency Action Plan(EAP) establishment in order to reduce the disaster risks of the reservoir's failures. Those reservoirs are out of ranges of Korean EAP establishment standard, but have potential risk of disasters as they have often failed by the recent extreme rainfall events and earthquakes, causing economical and life losses. The problem of reservoir aging is also one of the reasons of them. In this study, the developed selection criteria of small reservoirs for EAP establishment are storage capacity, embankment height, reservoir age, heavy rain factor and earthquake factor. These criteria were selected based on the review of the existing EAP establishment guidelines, analysis of the past dam failure cases, and the previous related studies. The quantification of these criteria were conducted for the practical applications in the fields, and applied to 67 previous failures in order to investigate the relation of each criteria with these failures. The earthquake factor found to be the highest relations followed by heavy rain factors, combination of earthquake and heavy rain factors, and reservoir age. The classification was made as observation and review groups for EAP establishments based on overlapping numbers of each criteria. This classifications applied to 354 reservoirs designated as having the potential disaster risk by MOIS, and showed 38.4% of observation and 11.9% of review groups. Anticipatory monitoring and regular inspection should be made by professional facility managers for the observation group, and necessity of EAP establishment should be assessed for the review group based on the downstream status and financial budget.

• 한국물환경학회지
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• 제34권6호
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• pp.669-677
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• 2018

Torrential rain and drought are repeated due to the increase in the unpredictable fluctuating of rainfall patterns. It is time for stabilize water resource management in terms of disaster prevention. Distributed control from sources is needed to minimize damages caused by torrential rains and droughts. Rain barrel can be used to reduce the runoff as they collect and store rainwater. In response to this situation, Seoul Metropolitan Government and other local governments implemented a project to support the installation of rain barrel and provided 90% of the cost of installing it in private areas. However, with limited budget, it is difficult to distribute rainwater to the city which is mostly covered by private areas. In this study, Samho-dong, Ulsan, where pilot projects of water cycle leading city are underway, analyzed the effects of reducing the runoff with respect to the amount of rainwater that can be used, and analyzed the economics of recoverable investment cost when installed. From the analysis, it was established that it is possible to show sufficient efficiency with a small capacity without the need to install large rain barrel effectively in the private sector, and to support the installation cost of less than 70 percent of the rainwater can be recovered.

• 상하수도학회지
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• 제29권2호
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• pp.165-169
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• 2015

Green roofs are gaining much interest in many cities around the world due to its multi-purpose effects of water conservation, flood mitigation and aesthetic benefits. However it may cause additional water demand to maintain green plants, which may intensify the current and future water shortage problems. While ordinary concrete roofs and normal green roof drains off rain water, concave green roof system can retain rain water because of its water holding capability. In this study, the water conservation effect of concave green roof was compared to normal roof on #35 building in Seoul National University, Seoul, Korea. For seven rainfall events the amount of stored rainwater and runoff were measured and proved water conservation effect of the concave green roof system. The concave green roof system of which area is 140m2 showed effect of water conservation from 1.8ton to 7.2ton and the most influence factors on water conservation in green roof are rainfall and antecedent day. If this concave green roof is applied to many buildings in the cities, it is expected as a way to water conservation through rainfall storage.