Design of In-situ Self-diagnosable Smart Controller for Integrated Algae Monitoring System

Sung Hwa Lee,Vinayagam Mariappan,Dong Chan Won,Jaekwon Shin,Seungyoun Yang 국제문화기술진흥원 2017 International Journal of Advanced Culture Technolo Vol.5 No.1

The rapid growth of algae occurs can induce the algae bloom when nutrients are supplied from anthropogenic sources such as fertilizer, animal waste or sewage in runoff the water currents or upwelling naturally. The algae blooms creates the human health problem in the environment as well as in the water resource managers including hypoxic dead zones and harmful toxins and pose challenges to water treatment systems. The algal blooms in the source water in water treatment systems affects the drinking water taste & odor while clogging or damaging filtration systems and putting a strain on the systems designed to remove algal toxins from the source water. This paper propose the emerging In-Situ self-diagnosable smart algae sensing device with wireless connectivity for smart remote monitoring and control. In this research, we developed the In-Site Algae diagnosable sensing device with wireless sensor network (WSN) connectivity with Optical Biological Sensor and environmental sensor to monitor the water treatment systems. The proposed system emulated in real-time on the water treatment plant and functional evaluation parameters are presented as part of the conceptual proof to the proposed research.

부지면적 축소를 위한 수직형 정수처리 공정 설계에 관한 연구

김성수(Seong-Su Kim),채선하(Seon-Ha Chae),최종웅(Jong-Woong Choi),김정현(Jeong-Hyun Kim),탁세완(Se-Wan Tak),김관엽(Kwan-Yeop Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12

In order to provide a new concept of water supply system that is more sustainable into and beyond the 21<SUP>st</SUP> century, small and decentralized water treatment plants and distribution systems have been suggested for ensuring water security which consists of stability and safety, reserving redundant water for emergency and preventing secondary contamination in distribution. The decentralized water supply systems can ensure water stability and safety with alternative source such as ground water, rain or seawater desalination. They reserve water enough to cope with emergency. Also, decentralization can shorten pipe distance from small plant to each consumer to reduce secondary contamination. The water treatment plant (WTP) for the decentralized water supply systems need to the smaller WTP. Owing to a limitation in the smaller sizes of WTP, developing design and construction technologies is inevitable for compacting of water treatment processes. In addition to the technologies discussed above, pressure systems of vertical structure should be evolved to achieve the WTP for the decentralized water supply systems. The present study focuses on the design and construction technologies for pressure water treatment systems of vertical structure including membrane (UF), ozone, granular activated carbon (GAC), UV. Pilot plant (1,000 m³/day) data was analyzed to investigate the WTP of vertical structure.

Automated conservation of water Quality Unleashed in Aquatic systems (AQUA): a low-cost community based sewage treatment system

Danika Mae D. Soberano,Jason Gil P. Villanueva,Danielle R. Ajoc 국제과학영재학회 2020 APEC Youth Scientist Journal Vol.12 No.1

This study was able to develop a community based sewage treatment system composed of a water monitoring device, a real-time web-based platform, and a helophyte filtration system using waste plastics that only costs 1380 USD. To determine the most efficient helophyte filtration system, setups namely: Horizontal Subsurface Filter, Vertical Subsurface Filter, and Hybrid filter were evaluated on water effluent parameters namely: Biological Oxygen Demand, Dissolved Oxygen, Temperature, Nitrate, pH, Total Suspended Solids, and Phosphorous with water quality guidelines from the Philippine Water Quality Guidelines and General Effluent Standards of 2016. Results showed that the filtration systems’ removal efficiency varied on Nitrification, BOD and TSS. V-SSF filter had high Nitrate and BOD with removal efficiency of 90.61% and 97.55% respectively but poor TSS rate with 66.28% removal efficiency. H-SSF filter showed good BOD and TSS results with removal efficiency of 96.44% and 79.81% respectively, but showed poor Nitrate with 85.91% removal efficiency. Hybrid Filter showed high Nitrate levels with 93.36% removal efficiency. An Arduino with GSM-based transmission and sensors for turbidity, pH, DO, and temperature was used for water monitoring. The website used GSM and python to capture and parse data in a MySQL database via XAMPP server. PHP and google maps API and Charts.js. were used for data retrieval and projection. This study concludes that the developed system is an effective community based water treatment system. V-SSF filter showed high removal efficiencies and cost practicality than other Subsurface systems. Transmission from Arduino to website was also effective in data dissemination.

진공강자흡식 오수시스템에 관한 연구

서기원(Kee-Won Suh),지영배(Young-Bae Ji),김동우(Dong-Woo Kim),강윤진(Yun-Jin Kang),김종호(Jong-Ho Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6

Self-powered electro-coagulation system driven by a wind energy harvesting triboelectric nanogenerator for decentralized water treatment

Jeon, Seung-Bae,Kim, Sunmin,Park, Sang-Jae,Seol, Myeong-Lok,Kim, Daewon,Chang, Yong Keun,Choi, Yang-Kyu Elsevier 2016 Nano energy Vol.28 No.-

<P><B>Abstract</B></P> <P>Many decentralized communities like rural communities of developing countries and remote communities, suffer from a scarcity of adequate water treatment because there is insufficient capital to construct relevant facilities, no experts to handle the required chemicals, insufficient electricity to operate them. Herein, we report a fully self-powered electro-coagulation (SPEC) system for de-centralized water treatment. For this, a triboelectric nanogenerator harvests ambient wind energy to provide the needed power. A simple electro-coagulation unit, composed of a simple pair of electrodes, successfully removes dissolved colloidal pollutants from water, while coagulating and precipitating pollutants, without any use of chemicals or an external power supply. The SPEC system removes 90% of algae and 97% of organic dye with self-powered treatment for 72h. Due to its easy operation, and its low cost arising from its inherently simple structure, requirement for much smaller-scale facilities and low operating cost, the SPEC system could become a powerful candidate for appropriate water treatment in many regions lacking centralized water treatment.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Self-powered electro-coagulation system is developed for decentralized water treatment. </LI> <LI> A wind energy harvesting triboelectric nanogenerator is utilized for power supply. </LI> <LI> Without any external supply, the system successfully removes pollutants in wastewater. </LI> <LI> The system shows high removal rate (>90%) with artificial algae and dye wastewater. </LI> <LI> The system can be utilized for general pollutants removal with broad applicability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

다중수원 수처리 의사결정에 관한 실험적 연구

정정우,조형락,이상호,채수권 대한상하수도학회 2015 상하수도학회지 Vol.29 No.1

A combined treatment system using multiple source water is becoming important as an alternative to conventional water supply for small-scale water systems. In this research, combined water treatment systems were investigated for simultaneous use of multi-source water including rainwater, ground water, river water, and reclaimed wastewater. A laboratory-scale system was developed to systematically compare various combinations of water treatment processes, including sand filtration, microfiltration (MF), granular activated carbon (GAC), and nanofiltration (NF). Results showed that the efficiency of combined water treatment systems was affected by the quality of feed waters. In addition, a simply approach based on the concept of linear combination was suggested to support a decision-making for the optimum water treatment systems with the consideration of final water quality.

유해 중금속 제거를 위한 소규모 정수처리용 여재 성능평가 연구

여인설 ( In-seol Yeo ),박승민 ( Seung-min Park ),박재로 ( Jae-roh Park ),오현재 ( Hyun-je Oh ),박찬규 ( Chan-gyu Park ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.3

In case of Mongolia, even though awareness of the water environment is gradually increased, it is not easy to receive the supply of clean water due to the shortage of water treatment facilities and specialized personnel aging. In addition, ground water quality is also poor with lots of mineral contents including hazardous heavy metal ions. Thus, small-scale water treatment package system, which has considered to design high work performance, portability, low cost and easy replacement, is consist of adsorbent module using alum sludge and zeolite. In this study, batch adsorption tests were conducted using alum sludge and zeolite with heavy metal ions such as arsenic, iron and manganese in order to evaluate applicability in the package system. In the results of experiment, although there are differences of removal rate in accordance with the substance, alum sludge hold great potential to remove cationic and anionic heavy metal species simultaneously with zeolite. Thus, when it applies to small scale water treatment package system in Mongolia, it is able to remove hazardous heavy metal ions effectively.

Chemical Dosing Control for Ultrafiltration Water Treatment System

P. Kungwalrut,A. Numsomran,P. Chaiyasith,J. Chaoraingern,V. Tipsuwanporn 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10

Chemical dosing is a significant process of water treatment system because it influences on water quality and operational cost. This paper presents a chemical dosing pH control using temporal logic technique for ultrafiltration water treatment system, in order to validate and analyze an appropriate control approach. In this study, a simulation was built in Matlab Simulink, and has been tested with the data collected from a pilot-scale ultrafiltration water treatment system. As stated in the simulation results, the proposed control scheme can achieve the performance specification in pH control.

Design of In-situ Self-diagnosable Smart Controller for Integrated Algae Monitoring System

Lee, Sung Hwa,Mariappan, Vinayagam,Won, Dong Chan,Shin, Jaekwon,Yang, Seungyoun The International Promotion Agency of Culture Tech 2017 International Journal of Advanced Culture Technolo Vol.5 No.1

The rapid growth of algae occurs can induce the algae bloom when nutrients are supplied from anthropogenic sources such as fertilizer, animal waste or sewage in runoff the water currents or upwelling naturally. The algae blooms creates the human health problem in the environment as well as in the water resource managers including hypoxic dead zones and harmful toxins and pose challenges to water treatment systems. The algal blooms in the source water in water treatment systems affects the drinking water taste & odor while clogging or damaging filtration systems and putting a strain on the systems designed to remove algal toxins from the source water. This paper propose the emerging In-Situ self-diagnosable smart algae sensing device with wireless connectivity for smart remote monitoring and control. In this research, we developed the In-Site Algae diagnosable sensing device with wireless sensor network (WSN) connectivity with Optical Biological Sensor and environmental sensor to monitor the water treatment systems. The proposed system emulated in real-time on the water treatment plant and functional evaluation parameters are presented as part of the conceptual proof to the proposed research.

순환식 수경재배를 위한 수처리 기술

이승윤,김유창 대한환경공학회 2019 대한환경공학회지 Vol.41 No.9

Hydroponics is a cultivation technology of growing plants in nutrient solutions without soil. Hydroponic cultivation has the advantages of high yield per unit area and high quality crop production, however, there is a problem that the waste hydroponic nutrient solution can cause eutrophication when discharged into aquatic systems. In hydroponic cultivation, generally 30% of the nutrient solution is drained. By introducing closed hydroponic water treatment system, it is possible to prevent environmental pollution and reduce the cost of fertilizer and water resources. To reuse the nutrient solution, the plant pathogenic bacteria must be sterilized, while the nutrients contained in the waste hydroponic solution must be preserved. In the Netherlands and Europe, where hydroponic cultivation is developed, the distribution rate of the closed hydroponic system is more than 95%, but is less than 5% in Korea. In order to prepare for environmental regulations related to discharge of hydroponic solutions and to increase the distribution rate of closed the hydroponic system in Korea, it is necessary to develop Korean-type nutrient solution treatment technology. This review provides the characteristics and examples of the physical and chemical water treatment processes for closed hydroponic system so far and analyzed the current technology status of commercial closed hydroponic water treatment system. In addition, we suggest the development direction of closed hydroponic water treatment technology suitable for korean hydroponic characteristics. 수경재배는 토양을 이용하지 않고 액상비료인 양액으로 작물을 재배하는 방법이다. 수경재배는 단위 면적당 높은 생산량, 고품질 작물생산의 장점이 있으나 사용한 폐양액이 수계로 방류되면 부영양화를 일으킬 수 있는문제가 있다. 수경재배 시 일반적으로 급액된 양액의 30%가 배액되는데, 이를 재이용하는 순환식 수경재배를 도입하면 환경오염을 방지하고, 비료 및 수자원 비용을 절감 할 수 있다. 양액을 재이용하기 위해서는 폐양액에 포함된 영양소는 유지하되, 식물 병원균은 살균하는 수처리 기술이 필요하다. 수경재배가 발달한 네덜란드 및 유럽은 순환식 수경재배 시스템 보급율이 95% 이상이지만, 국내에는 5% 미만으로 낮다. 국내 순환식 수경재배 관련향후 환경규제를 대비하고, 순환식 양액재배 시스템 보급율을 높이기 위해서는 한국형 순환식 양액재배 수처리기술개발이 필요하다. 본 총설에서는 순환식 수경재배에 대표적으로 사용된 물리/화학적 수처리 공정의 특징과 사례를 소개하고, 국내외 순환식 수경재배 시스템 현황에 대해 분석하였다. 더불어 국내 수경재배 특성에 적합한 순환식 수경재배 수처리 기술개발 방향에 대해 논의해 보고자 한다.