According to today's policies that pursue both raising the quality of life and improving the economy, many cities are increasing the rate of providing sewage services to its residents. However, because until now the focus has been on the construction of sewage treatment plants rather than the improv...
According to today's policies that pursue both raising the quality of life and improving the economy, many cities are increasing the rate of providing sewage services to its residents. However, because until now the focus has been on the construction of sewage treatment plants rather than the improvement of sewage pipes with respect to collection and transport, a significantly large amount of infiltration water enter the sewage pipes. As a result, the sewage treatment facilities are being operated inefficiently because the inflow volume and water quality are different from the initial expectations. Therefore, clearly identifying the source and amount of infiltration flow is urgently needed. This paper executes sampling research based on the methodologies and outcomes that have been determined through the contract research conducted on the appropriateness of municipal sewage improvement. It lays out studies on the problems of the research and calculation methods on infiltration flow and the ways for improvement, as well as the measures for infiltration flow reduction. Upon calculating the proportion of infiltration water in 9 locations in the Pyo-Bon region of North Kyung-Sang Province, the Gu-Mi area where there are new housing developments had a infiltration water proportion of less than 20%. In contrast, areas lacking improved pipes showed a proportion of up to 80&%, pointing out the large difference between the two. In separate sewer systems, the infiltration water was 11%, whereas in combined sewer systems it was 30%. Some areas even had proportions of 78%, clearly highlighting the importance of improving pipe systems as soon as possible. When expanding the research results from North Kyung-Sang Province to Andong city, the infiltration water at Andong city was 5,866㎥ per day. Here, the necessity of improving pipe systems is again clear since a 15% reduction in infiltration water through the improvements is equivalent to a infiltration water reduction of 3,725㎥. Reducing the occurrence of infiltration water will lead to more efficient operation of sewage treatment facilities, prevention of groundwater contamination, and outflow water of higher quality. Thus, effectiveness can be raised by standardizing assessments of pipe systems through detailed inspections.
According to today's policies that pursue both raising the quality of life and improving the economy, many cities are increasing the rate of providing sewage services to its residents. However, because until now the focus has been on the construction of sewage treatment plants rather than the improvement of sewage pipes with respect to collection and transport, a significantly large amount of infiltration water enter the sewage pipes. As a result, the sewage treatment facilities are being operated inefficiently because the inflow volume and water quality are different from the initial expectations. Therefore, clearly identifying the source and amount of infiltration flow is urgently needed. This paper executes sampling research based on the methodologies and outcomes that have been determined through the contract research conducted on the appropriateness of municipal sewage improvement. It lays out studies on the problems of the research and calculation methods on infiltration flow and the ways for improvement, as well as the measures for infiltration flow reduction. Upon calculating the proportion of infiltration water in 9 locations in the Pyo-Bon region of North Kyung-Sang Province, the Gu-Mi area where there are new housing developments had a infiltration water proportion of less than 20%. In contrast, areas lacking improved pipes showed a proportion of up to 80&%, pointing out the large difference between the two. In separate sewer systems, the infiltration water was 11%, whereas in combined sewer systems it was 30%. Some areas even had proportions of 78%, clearly highlighting the importance of improving pipe systems as soon as possible. When expanding the research results from North Kyung-Sang Province to Andong city, the infiltration water at Andong city was 5,866㎥ per day. Here, the necessity of improving pipe systems is again clear since a 15% reduction in infiltration water through the improvements is equivalent to a infiltration water reduction of 3,725㎥. Reducing the occurrence of infiltration water will lead to more efficient operation of sewage treatment facilities, prevention of groundwater contamination, and outflow water of higher quality. Thus, effectiveness can be raised by standardizing assessments of pipe systems through detailed inspections.
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