"A Study on Water Quality to Understand the Cause of Bloom of Potamocorbula amurensis in Seomjin River Estuary Wetland"

2018 ◽  
Vol 19 (4) ◽  
pp. 322-327
Author(s):  
Hyoung Gon Kim ◽  
Cheong Jo Cheong ◽  
Seon Woo Cheong ◽  
Hyeong Su Kim ◽  
Young Sik Lee
1991 ◽  
Vol 24 (6) ◽  
pp. 171-177 ◽  
Author(s):  
Zeng Fantang ◽  
Xu Zhencheng ◽  
Chen Xiancheng

A real-time mathematical model for three-dimensional tidal flow and water quality is presented in this paper. A control-volume-based difference method and a “power interpolation distribution” advocated by Patankar (1984) have been employed, and a concept of “separating the top-layer water” has been developed to solve the movable boundary problem. The model is unconditionally stable and convergent. Practical application of the model is illustrated by an example for the Pearl River Estuary.


2004 ◽  
Vol 48 (9-10) ◽  
pp. 852-862 ◽  
Author(s):  
M. Troussellier ◽  
P. Got ◽  
M. Bouvy ◽  
M. M′Boup ◽  
R. Arfi ◽  
...  

Author(s):  
Chunlei Ma ◽  
Jun Zhao ◽  
Bin Ai ◽  
Shaojie Sun ◽  
Zhihao Yang

APAC 2019 ◽  
2019 ◽  
pp. 837-843
Author(s):  
Dang Thi Huyen ◽  
Le Nhu Da ◽  
Vu Duc Toan ◽  
Le Thi Phuong Quynh ◽  
Duong Thi Thuy

Author(s):  
Lani Febriana Safitri ◽  
Niniek Widyorini ◽  
Oktavianto Eko Jati

Perairan Muara Sungai Sayung terletak di wilayah Kabupaten Demak sebelah barat. Perairan ini telah dipengaruhi oleh berbagai aktivitas manusia yang menyebabkan terjadinya penurunan kualitas perairan. Bakteri Coliform merupakan bakteri gram negatif yang berbentuk batang dan tidak membentuk spora. Bakteri ini merupakan bakteri indikator terjadinya pencemaran perairan maupun indikator keberadaan bakteri patogen lainnya. Perhitungan total bakteri Coliform perlu dilakukan untuk mengetahui adanya pencemaran limbah organik yang terjadi di Perairan Muara Sungai Sayung, Morosari, Demak. Tujuan dari penelitian ini adalah untuk mengetahui kelimpahan total bakteri Coliform, dan status perairan di Perairan Muara Sungai Sayung, Morosari, Demak. Penelitian ini juga bertujuan untuk mengetahui hubungan dari jumlah total bakteri Coliform dengan bahan organik terlarut dan oksigen terlarut (DO). Pelaksanaan penelitian ini dilakukan pada bulan Mei 2018. Metode yang digunakan dalam penelitian ini adalah metode survei dan teknik pengambilan sampel menggunakan metode random sampling yang dilakukan pada lima stasiun. Hasil penelitian menunjukkan bahwa kelimpahan rata-rata total bakteri Coliform yang diperoleh berkisar antara 4 x 103 – 550 x 10 3/100ml. Kelimpahan rata-rata total bakteri Coliform yang diperoleh pada setiap stasiun menunjukkan bahwa kandungan total bakteri Coliform telah melebihi baku mutu air menurut Keputusan Menteri Lingkungan Hidup Nomor 51 Tahun 2004. Keberadaan total bakteri Coliform memiliki hubungan yang lemah dengan kandungan bahan organik terlarut, sedangkan keberadaan total bakteri Coliform memiliki hubungan yang cukup dengan oksigen terlarut (DO) di perairan Muara Sungai Sayung Morosari, Demak. Sayung River Estuary is located in the western part of Demak Regency. This estuary has been affected by various human activities which have led to a decline in water quality. Coliform bacteria are a gram-negative bacteria that are rod-shaped and do not form spores. This bacterium is an indicator bacteria of water pollution and an indicator of the presence of other pathogenic bacteria. Total Coliform bacteria calculation needs to be carrid out to find out if there any contamination of organic waste in Sayung River Estuary, Morosari, Demak.. The purpose of this research was to determine total abundance of Coliform bacteria, water quality in Sayung River Estuary, Morosari, Demak and relationship between the total abundance of Coliform bacteria with dissolved organic matter and dissolved oxygen (DO). This research was carried out in May 2018. The method that used in this research were survey method and the sampling technique was random sampling method in five stations. The results showed that the average abundance of total Coliform bacteria obtained ranged between 4 x 103 - 550 x 103 / 100ml. Average abundance of total Coliform bacteria obtained at each station shows that the total content of Coliform bacteria has exceeded the water quality standard according to Minister of Environment Decree number 51 of 2004. The total presence of Coliform bacteria has a weak relationship with the content of dissolved organic matter, while the total number of Coliform bacteria have sufficient relationship with dissolved oxygen (DO) in the Sayung River Estuary,Morosari, Demak.


1977 ◽  
Vol 28 (1) ◽  
pp. 67 ◽  
Author(s):  
E Wolanski

The small drainage area of the Parramatta River and the erratic rainfall pattern over Sydney are responsible for strong stratification phenomena in the upper Parramatta River estuary following rainfalls. A simple model is proposed for the fate of storm water and its effects on the water quality of the esturary.


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