Improved water quality in response to pollution control measures at Masan Bay, Korea

Chang, Won Keun; Ryu, Jongseong; Yi, Yoonju; Lee, Won‐Chan; Lee, Chan-Won; Kang, Daeseok; Lee, Changhee; Hong, Seongjin; Nam, Jungho; Khim, Jong Seong

doi:10.1016/j.marpolbul.2011.11.011

Cited by 46 publications

(21 citation statements)

References 13 publications

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“…하지만 이러한 하구역은 인접지역의 급격한 도시화 및 공업화에 따라 육상으로부터 물질 유입이 크게 증가했고, 수자원 확보 및 홍수 방지 등의 목적으로 여러 인 공구조물이 건설되어 담수와 해수 교환 및 유동이 변하였다 (Jickells, 1998;안 등, 2011;Chang et al, 2012). 이러한 인위적인 영향으로 인해, 이미 많은 하구에서 생지화학적 순환이 바뀌어 하구 생태계에 영향을 주는 중요한 요인인 영양염 농도 및 분 포가 조절되고 있으며, 이에 대한 이해는 향후 생태계 변화를 예측하는데 필수적이다 (Jickells, 1998;Liu et al, 2003;권 등, 2004;Liu et al, 2009).…”

Section: 서 론unclassified

“…또한 수심이 낮은 지역에서는 질산화 과정이 활발하게 진행된다 (Peterson et al, 2001;Hu and Li, 2009) (Fig. 2(B); Jickells, 1998;Arheimer and Liden, 2000;Chang et al, 2012). 반면에 대체로 유량이 많은 여름철은 선행강우의 영향으로 인해 다량의 영양염이 하류로 이동하였으며, 상대적으로 체류시간이 감소하여 하천 하구 내 영양염의 농도가 낮다 .…”

Section: 세 하천의 영양염 농도의 공간분포는 크게 세 가지 경향을 나타냈다 첫 번째 유형은 영양염 농도가 상류에서 unclassified

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Characteristics of Nutrient Distribution by the Natural and Artificial Controlling Factors in Small Stream Estuary

Kang¹,

Park²,

2017

The Sea

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This study was conducted to investigate the nutrient distribution and controlling factors in small stream estuaries. The seasonal variations of nutrient concentration (nitrate, ammonium and phosphate) were observed from 2010 to 2012 in the three streams located in Dang-hang (closed estuary: Go-seong, open estuary: Gu-man and Ma-am). The nutrient concentrations in Go-seong were significantly higher than other estuaries, because Go-seong is relatively large and has large nutrient load from the watershed. The dyke located at the estuary, also, caused the high nutrient concentration by reducing the dilution and increasing residence time. In all three streams, nitrate concentration was high at upstream and decreased toward the downstream, because high load of nutrient input were located at upstream. Dilution and biogeochemical removal toward the downstream also caused the trends. Especially, denitrification, a typical nitrogen removing process showed clear tendency of gradual decreasing from upstream to downstream. However, Ammonium and phosphate concentrations were high at upstream and decreased toward the downstream only when the nutrient loads from the rivers were high. Nutrient concentrations were low in summer and high in winter. Freshwater discharge in summer caused a decrease of the residence time and increase of the transport of nutrients to downstream and reduced the nutrient concentrations in the estuary. Nutrient removal by the biological production during high temperature periods also affected the low nutrient concentrations. Small stream estuaries showed distinct nutrient dynamics. It is necessary to understand these characteristics in order to properly manage the small stream estuary.

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Section: 서 론unclassified

Section: 세 하천의 영양염 농도의 공간분포는 크게 세 가지 경향을 나타냈다 첫 번째 유형은 영양염 농도가 상류에서 unclassified

Characteristics of Nutrient Distribution by the Natural and Artificial Controlling Factors in Small Stream Estuary

Kang¹,

Park²,

2017

The Sea

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“…Overall, when the salinity increased, COD Cr and acidic COD Mn increased significantly while a little change was observed for alkaline COD Mn. The coastal zone is a special geographical area, a transition zone from the ocean to the land, with two different unique attributes of sea and land [19]. So, it is unscientific to apply surface water quality standards or sea quality standards separately to assess the coastal water quality.…”

Section: Design Of Modeling Test For Influence Of Salinity On Cod Meamentioning

confidence: 99%

Influence of salinity on COD measurements in coastal water management

Sheng

Shi

et al. 2015

Desalination and Water Treatment

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A B S T R A C TChemical oxygen demand (COD) is an important parameter in water quality assessment. COD values by different determination methods were investigated in coastal rivers. The results show that there is no clear relationship between COD Cr and COD Mn in coastal areas. COD Cr does not reflect the degree of pollution of coastal waters. As salinity increased, COD Cr and acidic COD Mn increased significantly, but there was little/no change observed for alkaline COD Mn . Coastal zone water quality standards should be proposed to solve connection problems between marine quality standard and surface water quality standard.

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“…However, it would be a challenge to meet the goal of water quality (grade IVeIII) considering the past experiences related with the similar cases including the Lake Shihwa (Lee et al, inpress). Recently, one model case for the partial improvement of water quality from the severely polluted region of the Masan Bay, Korea suggested the total pollution load management system as a promising water quality management tool in Korea (Chang et al, 2012). In anyhow, if not carefully treated at all, it is highly probable that the Saemangeum would follow the Lake Shihwa case that the government finally abandoned the original desalination plan of the lake after spending a lot of money.…”

Section: Outlook For Further Research and Managementmentioning

confidence: 99%

The Saemangeum tidal flat: Long-term environmental and ecological changes in marine benthic flora and fauna in relation to the embankment

Ryu

Nam

Park

et al. 2014

Ocean & Coastal Management

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Improved water quality in response to pollution control measures at Masan Bay, Korea

Cited by 46 publications

References 13 publications

Characteristics of Nutrient Distribution by the Natural and Artificial Controlling Factors in Small Stream Estuary

Characteristics of Nutrient Distribution by the Natural and Artificial Controlling Factors in Small Stream Estuary

Influence of salinity on COD measurements in coastal water management

The Saemangeum tidal flat: Long-term environmental and ecological changes in marine benthic flora and fauna in relation to the embankment

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