• 한국융합학회논문지
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• 제11권10호
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• pp.213-217
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• 2020

천연 광물질, 식물질, 정수장 슬러지를 이용하여 친환경적인 수수질정화제와 이를 활용하는 오폐수복합처리시스템을 개발하였다. 오폐수복합처리시스템은 오염수 유입, 수질정화제 투입, 가압부상장치 가동, 슬러지 부상, 슬러지 수거 및 처리수 배출의 과정을 거친다. 이 장치를 축분 탈리액, 육계 세척수, 공장 폐수, 하수종말처리장 및 연못의 녹조제거에 적용하여 우수한 제거율을 얻었다. 유기성 폐기물 정화에 천연 수질정화제를 활용한 예는 조사되지 못했다.

• 한국환경복원기술학회지
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• 제6권1호
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• pp.41-50
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• 2003

The feasibility as floricultural crops and water garden plant materials of Korean native water plants was investigated. Propagation type, growing and flowering time were observed for development as water garden, interior aquarium plant and water purification materials. Flowering time of the water plant was 7 species in May, 28 species in June, 49 species in July, 55 species in August, 47 species in September, and 17 species in October. Beautiful flowering water plants were Nymphaeaceae, Nymphoides peltata, Nymphoides indica, Monochoria korsakowii, Iris pseudacorus, Iris laevigata, and etc. Ornamental leafy water plants were Ceratopteris thalictroides, Ludwigia ovalis, Myriophyllum verticillatim, Limnophila sessiliflora, Blyxa aubertii, Blyxa echinosperma, Vallisneria asiatica, Hydrilla verticillata and Eleocharis acicularis etc. Isoetes japonica, Isoetes coreana and Isoetes sinensis were propagated by spore. Blyxa aubertii, Blyxa echinosperma, Myriophyllum verticillatim, Nuphar japonicum, Nelumbo nucifera, Ottelia alismoides, Sagittaria aginashi, Trapa japonica, and Trapa natans were propagated by seed. Persicaria amphibia, Ceratophyllum demersum (hornwort), Myriophyllum verticillatim, Myriophyllum spicatum, Oenanthe javanica, Potamogeton crispus, Hydrilla verticillata and Acorus calamus were propagated by division. And Vallisneria asiatica, Hydrilla verticillata and Phragmites japonica were propagated by runner. Ceratophyllum demersum (hornwort), Myriophyllum verticillatim, Myriophyllum spicatum, Limnophila sessilifera were propagated by adventitious bud. Ceratopteris thalictroides was propagated by leaf cutting. The 35 genera, 68 species of water plants were available for horticultural use. The 45 species such as Iris laevigata, Eleocharis acicularis, Menyanthes trifoliata, Nymphaea minima, Nuphar pumilum, Nymphoides coreana, Nymphoides peltata, Nymphoides indica, Nymphaea tetragona (water lily), and Typha latifolia could be use for water garden plant. The 21 species such as Limnophila sessilifera, Vallisneria asiatica, Ceratophyllum demersum and Hydrilla verticillata available for indoor aquarium. The 19 species such as Ottelia alismoides, Oenanthe javanica, Limnophila sessilifera and Blyxa echinosperma could be culture in container. The 27 species such as Trapa japonica, Trapa incisa, Phramites commuris (reed), Phragmites japonica, and Zizania latifolia were usable for water purification plant materials.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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• pp.925-928
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• 2001

Recently great efforts and investment have been made in order to achieve economical production by applying new methods like minimization of man-Power into construction field. This paper describe the performance of water purification, to which living organisms can adapt, and the physical properties of porous concrete with continuous voids. Although conventional concrete has been regarded as a destroyer of nature, water and air can pass freely through concrete when it is made porous by forming continuous voids. this not only enables plants to vegetables, but also makes it possible for microscopic animals and plants, including bacteria, to attach to and inhabit uneven surface as well as internal voids when the concrete is provided in a natural water area or waterside area. As a result, Porous concrete using recycled aggregate improved the performance of water purification.

• The Plant Pathology Journal
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• 제15권1호
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• pp.34-37
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• 1999

Cymbidium mosaic virus (CyMV) was purified from CyMV infected orchid plant leaves by Sephacryl S-500 HR column chromatography. Partial purification was done by solubilization with Triton X-100 (alkylphenoxypolyethoxy ethanol) and precipitation with polyethylene glycol (PEG 6,000) followed by ultracentrifugation on 30% sucrose cushion. Based on the spectrophotometric analysis, 33 mg of CyMV could be obtained form 100 g of CyMV-infected orchid plant leaves. The purified CyMV represented one distinct homogeneous band by SDS-PAGE, and electron microscopy revealed that it was highly homogeneous and not fragmented. Bioassay demonstrated that the purified CyMV had a normal infectivity to Chenopodium amaranticolor and orchid plants. Based on these results, the purification method in this work could be served as an improved method for the purification of CyMV and similar viruses with good yield, high purity and native integrity.

• 한국인터넷방송통신학회논문지
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• 제24권3호
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• pp.139-145
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• 2024

코로나19 이후로 사람들의 주 생활공간의 대부분이 실내로 옮겨졌다. 이러한 영향으로 많은 사람의 반려식물에 관한 관심이 지속적으로 상승하고 있다. 반려식물을 키우는 사람들은 정서적 안정 또는 공기 정화를 목적으로 키우게 되는 경우가 많다. 실제로 식물은 사람들에게 심리적인 안정감을 주는 효과가 있을 뿐만 아니라 어떤 식물이냐에 따라 실내 공기 정화 능력 또한 탁월하다. 하지만 식물에 대한 지식이 없다면 어떤 식물이 공기 정화 효과가 탁월한지 알 수 없고 키우더라도 금방 시들어 버리는 문제를 마주하게 된다. 따라서 본 논문에서는 사전 지식이 없는 사용자들에게 데이터베이스와 MBTI를 활용하여 사용자의 MBTI 정보 및 회원 정보를 데이터베이스에 저장하여 관리하고, 이를 바탕으로 사용자와 성향이 맞는 식물 데이터를 추천하고 캘린더를 통해 일정을 관리할 수 있는 기능을 제공하는 애플리케이션을 개발하고자 한다.

• 상하수도학회지
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• 제33권5호
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• pp.329-339
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• 2019

Recently, the advancement of information and communication technology(ICT) is expanding the connectivity through Internet of Things(IoT), and the media of connection is also expanding from wire/cable transmission to broadband wireless communication, which has significantly improved mobility. This hyperconnectivity has become a key element of the fourth industrial revolution, whereas the supervisory control network of purification plants in korea is operated as a communication network separated from the outside, thereby lagging in terms of connectivity. This is considered the best way to ensure security, and thus there is hardly any consideration of establishing alternatives to operate an efficient and stable communication network. Moreover, security for management of a commercialized communication network and network management solution may be accompanied by immense costs, making it more difficult to make new attempts. Therefore, to improve the conditions for the current supervisory control network of purification plants, this study developed a industrial security L2 switch that supports modbus TCP(Transmission Control Protocol) communication and encryption function of the transmission section. As a result, the communication security performance improved significantly, and the cost for implementing the network management system using Historical Trend and information of HMI(Human Machine Interface) could be reduced by approximately KRW 200 million. The results of this study may be applied to systems for gas, electricity and social safety nets that are infrastructure communication networks that are similar to purification plants.

• 한국환경생태학회지
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• 제38권4호
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• pp.426-433
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• 2024

본 연구에서는 식물에 의한 표면적 증가와 생리작용이 미세먼지 정화에 미치는 영향을 추정하기 위하여 대조구(Control; Type C)을 설정하고, 관엽식물(Spathiphyllum wallisii; Type P)과 인조식물(Artificial Plant; Shape of Spathiphyllum wallisii; Type A.P)을 활용하여 미세먼지 정화소요시간을 측정하고 비교·분석하였다. 그 결과, 각 실험구별 미세먼지 정화에 소요된 시간은 Type C에 비하여 Type A.P는 57~64%, Type P는 31~32% 수준으로 감소하였다. 이후, LMM(Liner Mix Model)을 활용하여 각 실험구별 시간변화에 따른 교호작용을 검정한 결과, 표면적증가와 시간변화(PM10 : t=3.123, p<0.05, PM2.5 : t=3.180, p<0.05), 생리작용과 시간변화(PM10 : t=4.065, p<0.05, PM2.5 : t=4.307, p<0.05)는 통계적으로 유의한 것으로 분석되어 각 요인과 시간변수의 교호작용이 있음을 확인할 수 있었다. 마지막으로 식물의 미세먼지 정화요인에 따른 효율은, 정화요인이 존재하지 않는 대조구(Type C)에 비하여 표면적 증가로 1.40배, 생리작용으로 1.95배, 총 평균 2.74배의 정화시간이 더 짧은 것으로 비선형회귀분석을 통해 추정하였다. 이상의 결과를 종합하여 식물체의 미세먼지 정화매커니즘 중 생리작용(방출 및 흡수 등)이 표면적 증가(흡착)보다 더 큰 영향을 미치고 있음을 예상하였으며, 이에 따라 미세먼지 정화 기능을 목적으로 하는 녹지에서 비배 및 관수관리등 녹지관리가 중요한 요인임을 피력하였다.

• 생태와환경
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• 제54권3호
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• pp.240-246
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• 2021

깔따구(Diptera: Chironomidae)는 저서성 대형무척추동물로 환경 및 수질 변화에 민감한 영향을 받는 중요한 환경지표생물이다. 이러한 깔따구 유충이 정수장에서 본 연구에서는 제주 정수처리장에서 발견된 깔따구 유충의 종을 분류하기 위해 형태 사진 및 COI (cytochrome c oxidase subunit I) Primer로 증폭시킨 DNA의 염기서열을 계통수 분석을 통해 분석을 실시하였다. 정수장 내 수도꼭지와 소화관 등에서 채집된 17개체는 둥근깃깔따구(O. tamarutilus) 14개체, 타마긴털깔따구(P. tammaater) 3개체 총 2종으로 확인되었다. 각 깔따구 종의 형태적 특징은 두부, 하순기절, 대악, 안테나, 발톱의 형태적 특징의 분류기로 종 동정하였다. NCBI Genbank에 등록된 깔따구 19종 COI 염기서열을 기반으로 본 연구에서 조사된 17개체의 계통진화적 분석 결과 채집된 깔따구 COI 염기서열이 둥근깃깔따구(O. tamarutilus)와 타마긴털깔따구(P. tammaater) 2종으로 각각 계통군(clade)를 이루는 것이 확인되었다. 이러한 결과는 정수장 환경별 발견되는 깔따구 유충의 다양성의 확인과 형태적-유전적 종 동정 분류정보를 바탕으로 수환경 관리 및 평가를 위한 기반 정보로 활용될 것이다.

• 환경영향평가
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• 제14권4호
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• pp.147-155
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• 2005

This study was designed to investigate the effect of plant as a botanical air purification on the indoor pollution by formaldehyde. Three indoor plants such as Dracaena marhginata, Spathiphyllum and Dracaena reflexa, were placed in the artificially contaminated reactor under laboratory condition. Both plant and soil effects on removal of formaldehyde from contaminated indoor air were observed. Reductions in the formaldehyde levels appeared to have been associated with soil medium factors as well as plant factors. The effect of soil on formaldehyde reduction was high in the early stage of the experiment and the results suggest that sorption could be more important factor than microbial degradation in the initial dissipation of contaminants in the soil. It was suggested that the effect of plant on formaldehyde reduction might be related to the plant species, total leaf surface area of plant, degree of contribution of soil medium, and exposed concentration level. The results of this study showed that air purification using plants is an effective means of reduction on indoor formaldehyde level, though, utilization of soil media with high sorption capacity and/or supplementary purifying aids were also suggested when the source is continuous or exposed concentration level is high.

• 한국농공학회논문집
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• 제51권1호
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• pp.33-39
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• 2009

A number of fallow paddies field continues to increase because of adverse agricultural circumstance such as upsurge income of foreign products, increase of labor costs in local community, imbalance between productivity and profitability etc. Such fallow paddies are necessary to be protected against weeds and trees. If fallow paddies are not managed, it will be devastated and needed cost for re-cultivation. Therefore, management of gradually increased fallow paddy fields should be conducted. In this study, the effect of plants growth inhibition and water quality purification through the control of flood in fallow paddy were examined in an experimental field. The managed and unmanaged fallow paddies through the control of water depth were constructed in the experimental field. The monitoring was conducted from 2005 to 2007. As the result, the managed fallow paddies were more effective than the unmanaged ones on the growth inhibition and water purification. In addition, when the fallow paddy is managed with regular water depth, it was the most effective in the plants growth inhibition.