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

Yustiani, Yonik Meilawati

doi:10.21660/2018.47.28822

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…Ten days of DO measurement results data for each sample point are graphs to get the DO Loss curve over time. DO Loss is an indicator of organic pollutants as measured by the decrease in the amount of oxygen needed by microorganisms during the decomposition of organic matter [4]. After obtained the value of DO Loss then accumulated DO Loss is to get the calculation of deoxygenation rate of each sample.…”

Section: A Onsite Measurement Resultsmentioning

confidence: 99%

“…The rate of deoxygenation is the rate of decrease in the value of dissolved oxygen in water because it has been used by aerobic bacteria to decompose organic substances that can degrade the quality of river water. Low value of deoxygenation rate represents the unhealthy condition of the water in performing self purification process [10] [4]. Viewed from the comparison with some previous research, on the middle segment of Citarum River value of K1 is similiar to the conditions in other urban rivers in Indonesia.…”

Section: Analysis Of Deoxygenation Rate Values In Several Riversmentioning

confidence: 98%

“…The appropriate useful formula utilized in the model is Streeter-Phelps equation that considers aeration and deoxygenation processes [3]. The rate of deoxygenation is the rate of decrease in the value of dissolved oxygen in water because it has been used by aerobic bacteria to decompose organic substances that can re-purify the quality of river water [4]. Dissolved oxygen concentration in the river water can give description on how healthy the water body is.…”

Section: Introductionmentioning

confidence: 99%

“…This value can be used for water quality modeling both in the process of estimating river quality at present and predictions in the future. The result of model calculation using coefficient value of deoxygenation rate will also give description about the environmental characteristics of the river [4].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: A Onsite Measurement Resultsmentioning

confidence: 99%

Section: Analysis Of Deoxygenation Rate Values In Several Riversmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Self Cite

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“…Laju deoksigenasi menunjukkan kecepatan reduksi oksigen terlarut pada suatu perairan akibat penggunaan oleh mikroba mendegradasi bahan organik. 25 Laju deoksigenasi dipengaruhi oleh konstanta deoksigenasi (KD) dan BOD ultimat. Angka konstanta laju doeksigenasi (KD) menunjukkan besarnya laju penguraian bahan organik oleh mikroorganisme aerob di perairan dalam satuan waktu.…”

Section: Gambar 3 Laju Deoksigenasi S Bedaung Hilirunclassified

Purifikasi Alami Sungai Bedadung Hilir Menggunakan Pemodelan Streeter-Phelps

Wahyuningsih

Dharmawan

Novita

2020

Jurnal Kesehatan Lingkungan Indonesia

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Latar Belakang: Sungai Bedadung hilir berada di Kabupaten Jember dan merupakan bagian sungai utama di DAS Bedadung. Sungai ini berperan penting bagi kehidupan masyarakat Jember. Kegiatan pengunaan lahan mengubah fungsi sungai menjadi saluran pembuang limbah. Limbah organik masuk ke badan air Sungai Bedadung dan menurunkan oksigen terlarut di perairan.Metode: Penelitian ini merupakan penelitian deskriptif. Data primer diperoleh dengan melakukan pengukuran debit dan kualitas air (Temperatur, DO dan BOD) sungai di lima titik pantau. Data tersebut kemudian diolah dan digunakan sebagai input variabel persamaan Streeter-Phelps.Hasil: Berdasarkan penelitian yang dilakukan laju deoksigenasi dan reoksigenasi Sungai Bedadung hilir tertinggi berada pada BDG02 masing-masing 7.997 mg/L.hari dan 19.168 mg/L/hari. Purifikasi alami yang dimodelkan dengan persamaan Streeter-Phelps, pada BDG02 tidak menunjukkan tren penurunan oksigen terlarut, sedangkan empat titik yang lain cenderung turun, mencapai kondisi kritis dan saturai di waktu yang berbeda. Hasil pembuktian model menunjukkan terjadi perbedaan nilai DO model terhadap kondisi lapangan (DO aktual).Simpulan: Aplikasi pemodelan Streeter-Phelps untuk menganalisis purifikasi alami Sungai Bedadung tidak dapat menunjukkan kesesuaian dengan kondisi lapang, karena proses deoksigenasi dan reoksigenasi di sepanjang sungai selalu berbeda dengan model bergantung pada tambahan pencemar dan hidraulik sungai. ABSTRACTTitle :Background: Bedadung Downstream, at Jember Region, is the primary river of Bedadung basin. The river has its meaningful advantages to public activities. Change of land uses the stream functions to a big drainage channel. Organic pollutants entrance to the water body and decrease the concentration of dissolved oxygen.Methods: This research was descriptive. The primary data was obtained by measuring stream flows and water quality (Temperature, DO, and BOD) at five observed stations. The data were processed and used as variable inputs to the Streeter-Phelps equation.Results: Based on the research conducted, BDG02 had the highest values of deoxygenation and reoxygenation rates, which were 7.997 mg/L.day and 19.168 mg/L.day respectively. DOmod at BDG02 tends to line up, whereas DOmod at four stations had a tendency to declined to critical conditions and rise to the saturation condition at different times. DO sag model was different from actual DO, which measured directly in the water body.Conclusions: The use of the Streeter-Phelps equation to analyze the self-purification of Bedadung downstream wasn’t appropriate with the field conditions. Deoxygenation and reoxygenation process in the river body was typically difference with the model applied, which were affected by organic pollutants and stream hydraulics.

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Long-term analysis on determination of deoxygenation rate of urban river water

Yustiani,

Wahyuni,

Nuraprilia

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Water quality modeling is one approach in developing river management strategies. The deoxygenation rate is an important coefficient in the water quality of rivers modeling. This study aims to obtain a coefficient of deoxygenation rate using long-term method that can represent the condition of urban rivers with high levels of pollution. The study location was the Cikapundung River, which runs through Bandung, Indonesia. The method used to determine the rate of deoxygenation is long term, with an analysis period of 30 days in the laboratory. The Slope Method and empirical equations from Hydroscience were used to process the data. The results showed that the deoxygenation rate ranged from 0.230 to 0.291 per day. The value of the deoxygenation rate ranges from 0.40 to 0.81 per day using the Hydroscience empirical equation. The overall biochemical oxygen demand Ultimate (La) ranged from 62.03 to 77.18 mg/L. The deoxygenation rate value obtained using the long-term method shows a relatively higher result than the value obtained using the short-term time range. The long-term method is better than the short-term method because the results obtained from the long-term method are closer to the results of the empirical equation.

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

Cited by 6 publications

References 8 publications

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

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

Purifikasi Alami Sungai Bedadung Hilir Menggunakan Pemodelan Streeter-Phelps

Long-term analysis on determination of deoxygenation rate of urban river water

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