The deoxygenation rate determination based on physical condition of river body, case study of Citepus River

Yustiani, Yonik Meilawati; Mulyatna, Lili; Pranata, Frans

doi:10.1063/1.4820340

Cited by 11 publications

(15 citation statements)

References 5 publications

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“…The result shows that deoxygenation rate is higher in empirical formula solution. The similar condition had been observed in another urban river such as Citepus and Cikapundung, Bandung, Indonesia [17]. The deoxygenation rate range of Rangkui River in this study ranged from 0.14 to 0.41 per day (laboratory analysis) and from 0.49 to 0.55 per day (empirical formula).…”

Section: The Deoxygenation Rate Calculated By Means Of Empirical Formulasupporting

confidence: 86%

The Study of Deoxygenation Rate of Rangkui River Water During Dry Season

Yustiani¹

2018

GEOMATE

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Rangkui River is a river that passes through the area of Pangkalpinang City, Indonesia. The condition of the River Rangkui is now polluted, especially in the urban areas. Utilization of water quality model is one popular method to recover the river condition. Deoxygenation rate is an important coefficient in the BOD-DO formula used in the water quality model. This study was aimed to find out the actual coefficient of water deoxygenation rate of Rangkui River, especially in the dry season. Sampling was conducted at two location points that are considered to represent the condition of rivers in urban areas. The method of laboratory analysis used in the calculation of deoxygenation rate was using Winkler Method and Slope Method, while empirical formula used in deoxygenation rate calculation was using Hydroscience Equation formula for normal flow. The results showed that the value of deoxygenation rate range (K1) in the Rangkui River was between 0.14 to 0.41 per day and the BOD Ultimate (La) range was between 8.53 to 70.64 mg / L. As for the value of deoxygenation rate range (K1) on the River Rangkui using empirical formula was ranging from 0.49 to 0.55 per day. Higher values of deoxygenation rate generated from the empirical formula show the characteristic of typical polluted urban rivers.

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Section: The Deoxygenation Rate Calculated By Means Of Empirical Formulasupporting

confidence: 86%

The Study of Deoxygenation Rate of Rangkui River Water During Dry Season

Yustiani¹

2018

GEOMATE

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“…For example, the Cikapundung River and the Citepus River in Bandung, Indonesia, function as raw water sources for drinking water, irrigation, tourism, etc. [4], [5]. But on the other hand, this river is also a place for the disposal of domestic waste from housing that is mostly without processing first [6].…”

Section: Resultsmentioning

confidence: 99%

Community Opinion on Environmental Information System for Urban Rivers

2019

ijeat

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River water quality in urban areas needs to be maintained so that it can be used properly. Environmental information systems have become incompetent in developed countries and have produced good monitoring and maintained river water quality. This research was conducted to find out the views of the community on the needs of environmental information systems related to river water quality in urban areas. Data from the community was obtained by distributing questionnaires through internet media with the aim that respondents be reached from among those close to the habit of accessing information online. Based on data collection, it was found that the majority of the community stated that river water quality was important to optimize the function of the river. System information is believed to be very necessary in an effort to improve river conditions for government agencies, and is also considered important for the community. River data that is important to the community, not only the quality of the water but the information related to its use as a tourist area. Most people need information about urban river water quality. The results of this study recommend a river information system design that is complete with a variety of substance contents intended for people with different background needs and interests.

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“…In determining the rate of deoxygenation using this empirical formula considers environmental factors such as river depth. The depth of a river affects the life of the microorganisms present in it, where the deeper the depth of a river the less oxygen content and fewer microorganisms can live in the waters, and if the number of microorganisms in the water is less then the rate of deoxygenation in a river will be low, then the calculation of deoxygenation rate is also done by using empirical formula related to the depth of a river that is by the formula according to Hydroscience [8]. After measuring the depth of the Citarum River middle segment at the upstream and downstream points obtained results that exceeded 2.4 meters, so the formula used is K1 = 0.3 per day.…”

Section: Calculation Of Deoxygenation Rate Using Empirical Formulasmentioning

confidence: 99%

“…To have more information on the deoxygenation rates in other rivers, here are some studies in several rivers in different regions, in determining the value of deoxygenation rate, among others: ranges 0.42-0.64 per day [8]. • Cikapundung River has deoxygenation rate ranges 0.010 to 0.370 per day [9].…”

Section: Analysis Of Deoxygenation Rate Values In Several Riversmentioning

confidence: 99%

Determination of Deoxygenation Rate Coefficient as Component in Water Quality Modeling of Middle Segment of Citarum River, Indonesia

Yustiani¹,

Wang²,

Ayudina³

et al. 2019

IJRTE

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Citarum River is a river that passes in the Purwakarta City at its middle segment. The riverbank is overflowing with people's houses with its wastewater outlet leading directly to the river. Various efforts can be implemented in order to improve the environmental conditions of the Citarum River. One of the activities that can be conducted is the prediction of water quality through the modeling of river quality. This domestic waste polluted river model generally uses BOD and DO equations which require the coefficient of deoxygenation rate in its calculations. This study aims to determine the value of the coefficient of deoxygenation rate using the method of laboratory experiment and using the empirical formula. The coefficient will gives more accurate result of urban river quality modeling. Samplings were carried out at two locations that are considered to represent river condition. The laboratory analysis method used in the calculation of deoxygenation rate is using Winkler Method and Slope Method, while Empirical Formula is used in calculating deoxygenation rate using Hydroscience Equation. The results of the analysis and calculations show that the value of the deoxygenation rate range (K1) in the middle segment of Citarum River ranges from 0.10 to 0.17 per day and the BOD Ultimate (La) concentration ranges from 18.46 to 24.43 mg/L. As for the value of deoxygenation rate range (K1) on Citarum River using empirical formula ranged from 0.270 to 0.278 per day. The difference in value can be attributed to the actual deoxygenation rate in the Citarum River is hampered by the factors that disrupt the process of decomposition of organic matter and its capability on self purification process.

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The deoxygenation rate determination based on physical condition of river body, case study of Citepus River

Cited by 11 publications

References 5 publications

The Study of Deoxygenation Rate of Rangkui River Water During Dry Season

The Study of Deoxygenation Rate of Rangkui River Water During Dry Season

Community Opinion on Environmental Information System for Urban Rivers

Determination of Deoxygenation Rate Coefficient as Component in Water Quality Modeling of Middle Segment of Citarum River, Indonesia

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