• Title/Summary/Keyword: Total Pollution Load Control(TPLC)

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Research on the Development Management Basin and Goal for 3th T.W.Q on the Boundary between Metropolitan Cities/Dos Specified in Nakdong River Basin (낙동강수계 3단계 광역시·도 경계지점 목표수질 설정을 위한 관리권역 및 관리목표 설정 방법 연구)

  • Hwang, Ha Sun;Park, Ji Hyung;Kim, Yong Seok;Rhew, Doug Hee;Choi, Yu Jin;Lee, Sung Jun
    • Journal of Korean Society on Water Environment
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    • v.31 no.5
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    • pp.569-575
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    • 2015
  • The current Total Pollution Load Control (TPLC) sets the Target Water Quality (TWQ) by utilizing the delivery ratio, unit loads, and water quality modeling, it also allocates the watershed's permitted discharge load. Currently, common target pollutants of every unit watershed in TPLC are BOD and T-P. This study has reviewed the 1th and 2th of TWQ setting process for the Nakdong River 3th TWQ setting in Total Pollution Load Control (TPLC). As a result of review, 1th and 2th were divided into one management basin (mulgeum) for setting management goals. However, 3th was divided into six management basins (mulgeum, gnagjeong, geumho river, nam river, miryang river, end of nakdong river). The principle of management goal setting were to achieve the objective criteria of Medium Areas for the linkage of the water environment management policy. And Anti-Degredation (principle of preventing deterioration) were applied to the 3th TWQ. Also, additional indicators were considered in accordance with the reduction scenarios for the final management goals.

Research on How to Set 3rd Phase Target Water Quality on the Boundary between Metropolitan Cities/Dos Specified in Nakdong River Basin (낙동강수계 3단계 광역시·도 경계지점 목표수질 설정 방법 연구)

  • Hwang, Ha Sun;Park, Ji Hyung;Kim, Yong Seok;Rhew, Doug Hee;Choi, Yu Jin;Lee, Sung Jun
    • Journal of Korean Society on Water Environment
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    • v.33 no.1
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    • pp.70-77
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    • 2017
  • Total Pollution Load Control (TPLC) is a system for managing the discharge load assigned by satisfying the Target Water Quality (TWQ) in Standard Flow Conditions (SFC). TWQ for a between Metropolitan Cities/Dos Specified (Cites/Dos TWQ) is very important to be the basis of each Unit Watershed TWQ. The purpose of this study was to establish a rational and scientific 'Calculation Metohd of Cites/Dos TWQ'. A methodology for the 3rd phase 'Cites/Dos TWQ' was proposed in this study based on review of the past phase (1rd and 2rd) 'Cites/Dos TWQ' in nakdong river. And utilized water quality model to estimate 3rd phase 'Cites/Dos TWQ' The allocation method of individual discharge sources are important for estimating 'Cites/Dos TWQ' In this case, the key point of the method of calculating the total allowable individual sources is the balance of the equity and the efficiency between individual sources of reduced pollutants. Thus, water quality shall be determined with regard to the current emission levels, the reduction capacity and the technical possibilities of individual sources. We estimate 3rd phase 'Cites/Dos TWQ' according to the 'Calculation Method of Cites/Dos TWQ'.

A Study on Estimated Pollutant Delivery Load for the Basic Plan of TPLC (수질오염총량관리계획 수립을 위한 유달부하량 추정방법 연구)

  • Hwang, Ha Sun;Rhee, Han Pil;Ahn, Ki Hong;Park, Ji Hyung;Kim, Yong Seok;Lee, Sung Jun
    • Journal of Korean Society on Water Environment
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    • v.32 no.4
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    • pp.375-383
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    • 2016
  • Total Pollution Load Control (TPLC) calculates and manages the allowable pollutant load that is discharged from the watershed, which can meet the water quality target. Delivery Ratio (DR) is generally used for predicting the variation of pollutant mass balance between the pollutants discharged from the watershed and a certain point in the stream, and it is very important for estimation of accurate allowable pollutant load. The concept of DR in TPLC is different from prevalent DR, because DR in TPLC includes both the discharge of pollutants from the watershed and the delivery mechanism. Therefore, DR in TPLC should be estimated by using a proper and unified methodology. The appropriate method and equation for estimation of DR in TPLC was developed through the review of various methodologies, and the applicability of the equation was evaluated in a study area (Geumho A). Determination coefficients (R2) of regression were shown to be relatively high (BOD 0.71~0.87, T-N 0.86~0.90, T-P 0.62~0.69). Applicability of the developed methodology and equations was evaluated as appropriate for TPLC, and it is suggested.

A Study on Selection Method of Management Watershed for Total Pollution Load Control at Tributary (지류총량관리를 위한 관리유역 선정 방법에 관한 연구)

  • Hwang, Ha Sun;Lee, Sung Jun;Ryu, Jichul;Park, Ji Hyung;Kim, Yong Seok;Ahn, Ki Hong
    • Journal of Korean Society on Water Environment
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    • v.32 no.6
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    • pp.528-536
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    • 2016
  • The purpose of Total Pollution Load Control at Tributary is to obtain maximum improvement effect of water quality through finding the most impaired section of water-body and establishing the proper control measure of pollutant load. This study was implemented to determine the optimal management of reach, period, condition, watershed, and pollution source and propose appropriate reduction practices using the Load duration curve (LDC) and field monitoring data. With the data of measurement, LDC analysis shows that the most impaired condition is reach V (G4~G5), E group (flow exceedance percentile 90~100%) and winter season. For this reason, winter season and low flow condition should be preferentially considered to restore water quality. The result of pollution analysis for the priority reach and period shows that agricultural nonpoint source loads from onion and garlic culture are most polluting. Therefore, it is concluded that agricultural reuse of surface effluent (storm-water runoff with non-point sources) and low impact farming that includes reducing fertilization and controlling the height of drainage outlet are efficient water quality management for this study watershed.