scholarly journals WATER POLLUTION AND RESTORATION IN OSAKA BAY; HISTORICAL REVIEW AND SCIENTIFIC EVALUAION OF POLICIES OF AREA-WIDE TOTAL POLLUTANT LOAD CONTROL

2003 ◽  
pp. 69-87
Author(s):  
Keiji NAKATSUJI ◽  
Donjin HAN ◽  
Nobuyuki YAMANE
Water Policy ◽  
2018 ◽  
Vol 20 (4) ◽  
pp. 855-870 ◽  
Author(s):  
Satoshi Nakai ◽  
Youhei Soga ◽  
Satoshi Sekito ◽  
Akira Umehara ◽  
Tetsuji Okuda ◽  
...  

Abstract A total pollutant load control system (TPLCS) was implemented in the Seto Inland Sea in 1979 to reduce the water pollution and the frequency of red tides. We estimated primary production from 1981 to 2010 to determine the effects of reducing the nutrient loadings from the surrounding land. While primary production has decreased overall in the Seto Inland Sea in response to the TPLCS and the associated reductions in the total nitrogen (T-N) and phosphorus (T-P) loads from land since 1981, the reductions were limited to 4 of its 11 subareas. Primary production has increased in the Harima Nada but has been stable in the Bingo Nada subarea, reflecting the fact that the T-N and T-P stocks have not decreased in these subareas over the study years. The inconsistent responses of the 11 subareas suggest that the characteristics of each subarea should be considered when environmental management measures are established and implemented in the Seto Inland Sea. The controls on the nutrient loadings according to the TPLCS should be modified to permit better management of this semi-enclosed sea.


2020 ◽  
Vol 4 (4) ◽  
pp. 152-158
Author(s):  
Rakhecha PR

The problem of water pollution in India is not a new one. It has been an age- old practice that people dispose of their waste into rivers and other water bodies. The consumption of polluted water is intimately connected with the occurrence of many deadly diseases. Rapid and unplanned population growth in India is a key factor to the whole equation of water pollution. This paper provides an overview of population growth, the mechanism of water pollutant load, causes of water pollution in India as well as the diseases resulting from the use of polluted water.


2015 ◽  
Vol 8 (1) ◽  
pp. 57
Author(s):  
DINA ISTI’ANAH ◽  
MOCH. FAIZUL HUDA ◽  
AINUN NIKMATI LAILY

Microalgae in Sidoarjo Porong River is one component that can be used as bio-indicators of an imbalance in the ecosystem due to pollution load. Since the end of 2009, the River Porong Sidoarjo mud flow of water into which further aggravate the pollutant load to the Porong River. Water disposal Sidoarjo mud into the Porong River is thought to cause changes in the quality or increase water pollution. This study aims to determine phytoplankton found and to know the status of pollution in the river Besuki Porong Sidoarjo. Sampling was performed twice microalgae by using a plankton net and without plankton net or directly in September 2014. The results showed that the kind of microalgae found Synedra sp. The River Porong Sidoarjo. Synedra sp. is a type of algae from Chrysophyceae division that can live in almost every aquatic environment enough sunlight to sustain its activities. Environmental factors were measured at the time of sampling are: light intensity of 251 lux, the pH of 8, the water temperature was 29 °, and the air temperature at 32°C.


2014 ◽  
Vol 20 (1) ◽  
pp. 29-39 ◽  
Author(s):  
Mohammad J. Emami Skardi ◽  
Abbas Afshar ◽  
Motahareh Saadatpour ◽  
Samuel Sandoval Solis

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