ABSTRACT Assessment and Management of Facilities for Non- point Source Pollution Reduction Kim Duk Hyung Plant Biotechnology Future fusion School of Technology Hankyong National University Recently in developed country, including Korea, initial stormwater runoff flow into the public water inflow and...
ABSTRACT Assessment and Management of Facilities for Non- point Source Pollution Reduction Kim Duk Hyung Plant Biotechnology Future fusion School of Technology Hankyong National University Recently in developed country, including Korea, initial stormwater runoff flow into the public water inflow and it causes water pollution problems in multiple environments as a major issue. Most initial rainfalls are occurred in non-point pollution, usually combined sewer shows characteristics of non-point pollution and discharge as a point pollution. So if we manage chamber or lagoon we could protect pollution of public water inflow. In addition, in case of separated sewer pipelines should be distinguished exactly(drainage and sewer pipes). If initial stormwater treatment facility uses at the end of the pipelines of the drainage or emerging point, it can reduce pollution. Main factors of Initial stormwater runoff pollution load are underlying sewer, roof runoff, road runoff, sediment, etc. In this study evaluates and suggests the reduction alternativesare caused from rainfall runoff in road (high concentration of drainage hazardous substances (organic substances, bacteria, oil, heavy materials). Until now in Korea has installed and is operating device facilities for control road runoff. The reason why facilities are installed is low construction price and easy to construct. But the efficiency is not proven yet. In this study, the classification of the first-type sewer Gwangju, Gyeonggido, the initial target area for stormwater runoff treatment device installed in the two point-type facilities (CDSMFS-type) analysis of the operating status you want to draw the limitations of the existing facilities were. In addition, the management alternatives such as recent domestic and external review of the non-point pollution reduction measures to clean the roads, storage facilities-sewage treatment plant for processing schemes linked to rainfall runoff modeling was to examine the applicability of, the long-term continuous rainfall reduction in the efficiency of the assessment and to quantify the amount of pollution caused by the amount of intensity to overcome the limitations and issues of management measures to be proposed. We analyzed reduction effects concerned about time variation of stormwater effluent’s quality which flows into the above treatment facility. We analyzed BOD5, COD, SS, T-N, T-P on effective rain seasons and picked the samples with monitored the documents which are related with rainfalls and rainfall intensity from 2011 to2012. Result of the monitoring indicates that shows outstanding initial washing appearance of BOD, COD, SS and epending on local characteristics of separated sewers system rainfall continued in subsequent rainfall runoff pollutant concentrations was observed significantly decreasing. BOD/COD ratio of the A point is 0.45 and B point is 0.56. So it shows that almost organic substances are not possible to apply biological method. Non-point reduction facilities show treatment efficiency of BOD 57.5~87.3% and COD 52.5~94.2%. Treatment efficiency is high, but rather large fluctuations in hand, one of the problems with this type of device variability in flow due to the responsiveness is considered by some to fall. Rainfall runoff model is utilized to calculate annual pollutant load reduction and along this result we analyzed applicability of road non-point reduction facilities. In case of capacity 2.5mm/hr device type shows that it can be reduce BOD load reduction ratio almost 30% but due to the limitations of the treatment efficiency it is somewhat hard to reduce BOD load reduction ratio more than 40%. So it can’t be applied to road runoff reduction facilities. Regulation of treatment capacity 5mm/hr is not enough but 3.4mm/hr is enough compared money with business effect. In case of conjunction with storage facility–sewage treatment facility can reach BOD load reduction ratio 40% when the accumulating runoff level and more than 5mm also reach morethan 60%. So it has high ratio compared with device facility and applicability of road runoff management is a very good alternative. Considering the cost-effectiveness proper facility capacity is 4~5mm based on accumulating runoff level. So accumulating runoff level 5mm of the ministry of environment is proper when consider the cost-effectiveness. Pollution load reduction through monthly street cleaning can’t occur reduction effect but weekly can remove BOD 3.6~4.3%. Daily cleaning can remove BOD 24.1~32.4% so it is very effective method and could reduce the rainfall pollution load. The device type of annual pollution load reduction in nearly the same amount of pollution as a result of managing the future in terms of technology for street cleaning and a portion of nonpoint reductions are expected to be able to recognize.
ABSTRACT Assessment and Management of Facilities for Non- point Source Pollution Reduction Kim Duk Hyung Plant Biotechnology Future fusion School of Technology Hankyong National University Recently in developed country, including Korea, initial stormwater runoff flow into the public water inflow and it causes water pollution problems in multiple environments as a major issue. Most initial rainfalls are occurred in non-point pollution, usually combined sewer shows characteristics of non-point pollution and discharge as a point pollution. So if we manage chamber or lagoon we could protect pollution of public water inflow. In addition, in case of separated sewer pipelines should be distinguished exactly(drainage and sewer pipes). If initial stormwater treatment facility uses at the end of the pipelines of the drainage or emerging point, it can reduce pollution. Main factors of Initial stormwater runoff pollution load are underlying sewer, roof runoff, road runoff, sediment, etc. In this study evaluates and suggests the reduction alternativesare caused from rainfall runoff in road (high concentration of drainage hazardous substances (organic substances, bacteria, oil, heavy materials). Until now in Korea has installed and is operating device facilities for control road runoff. The reason why facilities are installed is low construction price and easy to construct. But the efficiency is not proven yet. In this study, the classification of the first-type sewer Gwangju, Gyeonggido, the initial target area for stormwater runoff treatment device installed in the two point-type facilities (CDSMFS-type) analysis of the operating status you want to draw the limitations of the existing facilities were. In addition, the management alternatives such as recent domestic and external review of the non-point pollution reduction measures to clean the roads, storage facilities-sewage treatment plant for processing schemes linked to rainfall runoff modeling was to examine the applicability of, the long-term continuous rainfall reduction in the efficiency of the assessment and to quantify the amount of pollution caused by the amount of intensity to overcome the limitations and issues of management measures to be proposed. We analyzed reduction effects concerned about time variation of stormwater effluent’s quality which flows into the above treatment facility. We analyzed BOD5, COD, SS, T-N, T-P on effective rain seasons and picked the samples with monitored the documents which are related with rainfalls and rainfall intensity from 2011 to2012. Result of the monitoring indicates that shows outstanding initial washing appearance of BOD, COD, SS and epending on local characteristics of separated sewers system rainfall continued in subsequent rainfall runoff pollutant concentrations was observed significantly decreasing. BOD/COD ratio of the A point is 0.45 and B point is 0.56. So it shows that almost organic substances are not possible to apply biological method. Non-point reduction facilities show treatment efficiency of BOD 57.5~87.3% and COD 52.5~94.2%. Treatment efficiency is high, but rather large fluctuations in hand, one of the problems with this type of device variability in flow due to the responsiveness is considered by some to fall. Rainfall runoff model is utilized to calculate annual pollutant load reduction and along this result we analyzed applicability of road non-point reduction facilities. In case of capacity 2.5mm/hr device type shows that it can be reduce BOD load reduction ratio almost 30% but due to the limitations of the treatment efficiency it is somewhat hard to reduce BOD load reduction ratio more than 40%. So it can’t be applied to road runoff reduction facilities. Regulation of treatment capacity 5mm/hr is not enough but 3.4mm/hr is enough compared money with business effect. In case of conjunction with storage facility–sewage treatment facility can reach BOD load reduction ratio 40% when the accumulating runoff level and more than 5mm also reach morethan 60%. So it has high ratio compared with device facility and applicability of road runoff management is a very good alternative. Considering the cost-effectiveness proper facility capacity is 4~5mm based on accumulating runoff level. So accumulating runoff level 5mm of the ministry of environment is proper when consider the cost-effectiveness. Pollution load reduction through monthly street cleaning can’t occur reduction effect but weekly can remove BOD 3.6~4.3%. Daily cleaning can remove BOD 24.1~32.4% so it is very effective method and could reduce the rainfall pollution load. The device type of annual pollution load reduction in nearly the same amount of pollution as a result of managing the future in terms of technology for street cleaning and a portion of nonpoint reductions are expected to be able to recognize.
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