Effect of Intermittent Aeration and Step-Feed on Nitrogen Removal Performance in Anoxic-aerobic Sequencing Batch Reactor

Gürtekin, Engin

doi:10.28978/nesciences.646457

Cited by 3 publications

(8 citation statements)

References 19 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The mixed liquor suspended solids (MLSS) concentration in the reactor during the experimental study was 2500 ± 100 mg L –1 . [ 17 ]…”

Section: Methodsmentioning

confidence: 99%

“…The synthetic wastewater had an approximate COD concentration of 400 mg L –1 , NH 4 + ‐N concentration of 40 mg L –1 and PO 4 3− ‐P concentration of 10 mg L –1 . [ 9,17 ] The reactor was inoculated with activated sludge from a municipal wastewater treatment plant, and its characteristics are given in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…Ammonium, nitrite, and nitrate analysis were performed using a Standard Kit (Merck Specquorant, Nova 60). [ 17 ] The TIN value was obtained from the sum of ammonium, nitrite and nitrate concentrations.…”

Section: Methodsmentioning

confidence: 99%

“…A laboratory scale sequencing batch reactor with working volume of and PO 4 3− -P concentration of 10 mg L -1 . [9,17] The reactor was inoculated with activated sludge from a municipal wastewater treatment plant, and its characteristics are given in Table 1.…”

Section: Reactor and Operation Strategymentioning

confidence: 99%

See 3 more Smart Citations

Optimizing the efficiency of a three‐step fed anoxic/aerobic sequencing batch reactor using response surface methodology

Gürtekin

2023

CLEAN Soil Air Water

View full text Add to dashboard Cite

In this study, the removal of chemical oxygen demand (COD), ammonium nitrogen (NH4+‐N) and total inorganic nitrogen (TIN) in a three‐step fed anoxic/aerobic sequencing batch reactor was investigated. Response surface methodology (RSM) was used to determine and optimize the effect of operating parameters such as the ratio of aerobic/anoxic (Ae/Ax) phase durations, percentage of feeding to the first anoxic phase (R1) and ratio of feeding percentages to the third and second anoxic phases (R3:R2). The results of the analysis of variance (ANOVA) showed that the three independent variables were statistically highly significant (p < 0.0001). The values of the determination coefficient (R2) for the removal efficiency of COD, NH4+‐N and TIN was 0.9558, 0.9334 and 0.9963, respectively, indicating a good agreement between the experimental results and the predicted values. The quadratic model was valid in predicting experimental results. The optimum conditions obtained using the desirability function were found to be 2.05 for the ratio of Ae/Ax phase durations, 43.09% for R1 and 0.86 for R3:R2, where the COD, NH4+‐N and TIN removal efficiency was 94.29, 97.83 and 86.86%, respectively. As a result of the evaluation of the interactive effect of the independent variables, it was determined that R1 was the most effective factor. The results showed that RSM could be used for optimization of operating parameters and improvement of efficiency in a three‐step fed anoxic/aerobic sequencing batch reactor.

show abstract

“…The mixed liquor suspended solids (MLSS) concentration in the reactor during the experimental study was 2500 ± 100 mg L –1 . [ 17 ]…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Reactor and Operation Strategymentioning

confidence: 99%

See 2 more Smart Citations

Optimizing the efficiency of a three‐step fed anoxic/aerobic sequencing batch reactor using response surface methodology

Gürtekin

2023

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…Unit pengolahan air limbah pada IPAL BR ditujukan untuk mengolah limbah grey water yang merupakan limbah non-kakus yang berasal dari kegiatan mandi, cuci, dan dapur pada blok utara, Gedung Merapi, Bulaksumur Residence. Kelebihan utama penerapan strategi aerasi intermittent dalam pengolahan air limbah diantaranya penyisihan nitrogen yang cukup tinggi, mengurangi biaya operasional karena berkurangnya pasokan oksigen dan mengurangi jumlah sumber daya karbon yang dibutuhkan untuk denitrifikasi (Gürtekin, 2019). Microbubble Generator (MBG) merupakan alat aerasi yang menghasilkan gelembung udara mikro dengan ukuran diameter 10 -50 µm (Liu et al, 2012).…”

Section: Pendahuluanunclassified

Penyisihan Material Organik dan Nitrogen dengan Proses Aerasi Menggunakan Microbubble Generator (MBG) pada Instalasi Pengolahan Air Limbah (IPAL) Asrama

2021

View full text Add to dashboard Cite

Sebuah Instalasi Pengolahan Air Limbah (IPAL) di asrama mahasiswi UGM, Yogyakarta memiliki unit reaktor yang terdiri dari ekualisasi, aerasi 1, aerasi 2 dan clarifier dengan proses aerasi secara intermiten menggunakan Microbubble Generator (MBG) dengan fase aerasi dan tanpa aerasi masing-masing selama 15 menit. IPAL tersebut dibangun sebagai upaya dalam memenuhi standar Green Building bagi bangunan lama asrama di UGM untuk mengolah air limbah grey water. Hasil olahan air limbah akan dimanfaatkan di lingkungan asrama. Selama 208 hari beroperasi, kajian mengenai performa IPAL belum pernah dilakukan. Oleh karena itu, diperlukan kajian untuk mengetahui performa dan konsumsi energi pada IPAL dalam menyisihkan parameter pencemar berupa COD, nitrogen dan fosfat. Kajian dilakukan selama 81 hari pengamatan dengan menguji parameter kualitas air limbah pada setiap unit pengolahan. Parameter COD dan amonia telah memenuhi baku mutu Peraturan Menteri Lingkungan Hidup dan Kehutanan No. 68 Tahun 2016 tentang Baku Mutu Air Limbah Domestik, sedangkan parameter fosfat masih belum memenuhi baku mutu Peraturan Daerah D.I.Y. No.7 Tahun 2016 mengenai kegiatan IPAL Komunal. Hasil pengamatan pada performa IPAL, menunjukkan kedua tangki aerasi memiliki performa yang hampir sama, namun keberadaan tangki aerasi 2 tidak memiliki pengaruh yang signifikan dalam menyisihkan parameter pencemar. Pada tangki aerasi 1, efisiensi penyisihan COD mencapai rata-rata sebesar 73,6±17,46%, penyisihan PO4-P sebesar 39,12±14,96%, penyisihan total nitrogen sebesar 56,15±19,6%, efisiensi nitrifikasi sebesar 73,1±20.07% dan efisiensi denitrifikasi sebesar 61,72±27,48%. Total konsumsi energi pada IPAL dengan proses aerasi intermiten, dengan debit rerata 537,84 l/hari sebesar 14,12 kWh/m3 dan biaya sebesar Rp. 20.414/m3. Urutan konsumsi energi terbesar adalah penyisihan fosfat sebesar 5,10 kWh/gPO4-P, kemudian penyisihan amonia sebesar 1,79 kWh/gNH3-N, penyisihan TN sebesar 1,95 kWh/gTN dan penyisihan COD sebesar 0,45 kWh/gCOD. ABSTRACTA Wastewater Treatment Plant (WWTP) in the student dormitory of UGM, Yogyakarta has a reactor unit consists of an equalization, aeration 1, aeration 2, and clarifier with intermittent aeration process using a Microbubble Generator (MBG) with or without aeration for 15 minutes each. The WWTP was built as an effort to meet the Green Building standards for the old dormitory at UGM to make better process of grey water. The processed wastewater will be used for the dormitory environment. Operated for 208 days, there was no former studies for the WWTP. Therefore, a study is needed to determine performance and energy consumption of the WWTP in removing pollutant parameters consisting of COD, nitrogen and phosphate. The study was carried out for 81 days of observation by testing the wastewater quality parameters in each treatment unit. COD and ammonia parameters have met the quality standards of the Regulation of the Minister of Environment and Forestry No. 68 of 2016 concerning Domestic Wastewater Quality Standards, while phosphate doesn’t meet the quality standards of Regional Regulation D.I.Y. No. 7 of 2016 concerning Communal WWTP Activities. Results shows the performance from two aeration tanks are almost the same, but the existence of aeration tank 2 doesn’t have a significant effect. The results in aeration tank 1 showed the COD removal efficiency reached an average of 73.6±17.46%, PO4-P removal 39.12±14.96%, total nitrogen removal 56.15±19.6%, the nitrification efficiency 73.1±20.07% the denitrification efficiency 61.72±27.48%. The total energy consumption with intermittent aeration process with an average discharge of 537.84 l/day is 14.12 kWh/m3 and a cost of Rp. 20,414/m3 with the largest energy use being phosphate removal at 5.10 kWh/gPO4-P, then ammonia removal at 1.79 kWh/gNH3-N, TN removal at 1.95 kWh/gTN and COD removal at 0.45 kWh/gCOD.

show abstract

Penerapan Aerasi Intermittent Pada Proses Biofilter Aerob Untuk Mendegradasi COD dan Total Nitrogen Limbah Cair Domestik

Kurniawati,

Agung Rachmanto

2024

EMS

View full text Add to dashboard Cite

Limbah cair domestik merupakan sumber pencemar bagi perairan. Limbah ini mengandung bahan organik dan ammonia. Pengolahan biologis seperti biofilter aerob dapat digunakan untuk mendegradasi bahan organik dan amonia. Biofilter aerob akan dikombinasikan dengan aerasi intermittent untuk memaksimalkan proses nitrifikasi dan denitrifikasi. Penelitian ini bertujuan untuk mengetahui efektifitas proses pengolahan air limbah domestik menggunakan biofilter aerob yang dipadukan dengan aerasi intermittent untuk menurunkan parameter COD dan total nitrogen. Variasi yang digunakan ada dua yaitu jenis media dan rasio waktu aerasi intermittent. Media yang digunakan berupa bioball dan bioring. Sedangkan rasio waktu aerasi intermittent yang digunakan yaitu 6,5:1,5 jam (6,5 jam oxic-1,5 jam anoxic); 6:2 jam (6 jam oxic-2 jam anoxic); 5,5:2,5 jam (5,5 jam oxic-2,5 jam anoxic); dan 5:3 jam (5 jam oxic-3 jam anoxic). Persentase penurunan COD dan total nitrogen paling optimum yaitu 83,3% dan 97,5% pada rasio waktu 6,5:1,5 jam dan 6:2 jam di dalam reaktor dengan media bioball.

show abstract

Effect of Intermittent Aeration and Step-Feed on Nitrogen Removal Performance in Anoxic-aerobic Sequencing Batch Reactor

Cited by 3 publications

References 19 publications

Optimizing the efficiency of a three‐step fed anoxic/aerobic sequencing batch reactor using response surface methodology

Optimizing the efficiency of a three‐step fed anoxic/aerobic sequencing batch reactor using response surface methodology

Penyisihan Material Organik dan Nitrogen dengan Proses Aerasi Menggunakan Microbubble Generator (MBG) pada Instalasi Pengolahan Air Limbah (IPAL) Asrama

Penerapan Aerasi Intermittent Pada Proses Biofilter Aerob Untuk Mendegradasi COD dan Total Nitrogen Limbah Cair Domestik

Contact Info

Product

Resources

About