Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 4

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: quality status

Sortuj według:

Ogranicz wyniki do:

Actual Status Assessment and Prediction of the Musi River Water Quality, Palembang, South Sumatra, Indonesia

100%

Rahutami S. , Said M. , Ibrahim E. , Herpandi

Journal of Ecological Engineering

2022

tom Vol. 23, nr 10

68--79

Water pollution in rivers is still a crucial problem for the countries that use river water as the primary water source. This study aimed to determine the water quality of the Musi river and the content of heavy metals in water, sediment and mussels as well as to predict the water quality of the Musi river in the next five years. The water samples were taken from 18 stations (sampling points) from upstream to downstream to be checked physically, chemically and biologically. Prediction of the river water quality was made using the QUAL2Kw software. The research results show that the Musi River water is categorized as lightly polluted with concentrations of TSS and DO that have passed the threshold. The heavy metals in river water, such as Pb and Cr have also passed the quality standard. The Fe, Mn, and Zn concentrations are pretty high in the sediment. In turn, in mussels, the metals measured were Fe, Cu, and Zn. The prediction results reveal that several values of the river quality parameters will pass the threshold value with the same pattern tendency from each station.

Analysis of the Quality and Pollution Load Carrying Capacity of Point Source Pollutants due to Tofu Industry Waste in Garuda River, Sragen Using QUAL2Kw Modeling

100%

Rizky F. A. , Sunarto S. , Suryawan I. W. K. , Suhardono S.

2024

tom Vol. 25, iss. 9

311--327

The Garuda River is one of the tributaries of Bengawan Solo in Sragen Regency which is suspected of experiencing a decline in water quality. This study aims to determine the quality and pollution load carrying capacity (PLCC) of the Garuda River to the source of pollutants, especially those caused by tofu industrial liquid waste. The research method used in this study is a quantitative method to analyze the status of river water quality using the pollution index (PI) method and the calculation of river PLCC using the QUAL2Kw model with 3 modeling scenarios. The analysis showed that the Garuda River was proven not to meet the class III quality standards because several parameters such as temperature, TSS, nitrite (NO2 -N), and total Coliform were above the set quality standards. Based on the calculation of the pollution index, it was found that the Garuda River was proven to be polluted with a lightly polluted quality status with a pollution score ranging from 1.49 to 2.91. Based on QUAL2Kw modeling, it was found that the PLCC of Garuda River for TSS parameters was 233.28–259.20 kg/day, BOD was 12.96–15.55 kg/day, and COD was 51.84–103.68 kg/day. One of the control efforts that can be carried out is reducing the pollutant burden on each source of pollution, especially point source pollutants from tofu industrial liquid waste.

Impact of water sampling frequency on estimating water quality status in the Ondava River

72%

Pekarova P. , Pekar J. , Miklanek P.

nr 1-4

105-113

Water quality status of the Baltic Sea coastal zone - body of sea between Darlowo and Leba Ports

58%

Trojanowski J. , Trojanowska C. , Moczulska A.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

2001

tom 05