Kinetic modeling of organic and nitrogen removal from domestic wastewater in a down-flow hanging sponge bioreactor

Nga, Dinh Thi; Hiep, Nguyen Trung; Hung, Nguyen Tri Quang

doi:10.4491/eer.2018.390

Cited by 17 publications

(11 citation statements)

References 43 publications

(67 reference statements)

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“…Conducting batch tests with the actual wastewater could describe that system more accurately or verify the default parameters. Review of biokinetic parameters has shown variances and value ranges for these parameters [19]. The biokinetic coefficients obtained from this study are within these ranges.…”

Section: Determination Of Biokinetic Parameters From Experimental Datasupporting

confidence: 72%

Biokinetic Study of Microbial Decontamination of Oilfield Produced Water

K²,

G³

et al. 2022

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This work was aimed at identifying microbials and determining the biokinetic parameters for bio-decontamination of oilfield produced water. An extant physical treatment unit for produced water was re-engineered and retrofit with a discontinuous aerobic bioreactor (Bio-Unit) system. The Bio-Unit was operated in a fill-and-draw sequence and the rates of total organic carbon (TOC) removal and biomass growth were monitored. The isolated microbial strains were identified as Bacillus, Pseudomonas and Chryseobacterium spp. The biokinetic parameters of the bio-detoxification process were determined by fitting experimental data into the Monod Equation. The maximum specific substrate utilization rate (k_m), maximum specific growth rate (μ(m,h )), substrate half saturation coefficient (K(STOC )), yield (Y), and endogenous decay rate (b_h), were found to be 0.20 day-1, 0.31 day-1, 2.7 mg TOC/l, 1.6 mg MLSS/mg TOC, and 0.23 day-1, respectively. These values are within the range published in literatures for oilfield produced water, thus will suffice for designing, modeling and control of biological treatment systems, since biokinetic parameters for real oilfield produced water treatment using discontinuous biological configuration is scanty.

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Section: Determination Of Biokinetic Parameters From Experimental Datasupporting

confidence: 72%

Biokinetic Study of Microbial Decontamination of Oilfield Produced Water

K²,

G³

et al. 2022

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“…The μ max and K B for COD removal of this study were relatively higher than other studies such as up-flow anoxic-aerobic sludge reactor [13], up-flow aerobic-anoxic sludge bed reactor [24], integrated anaerobic-aerobic reactor [25], up-flow aerobic anoxic sludge fixed film [7], moving bed biofilm reactors [5,[26][27][28], biofilm processes [10,29], modified septic tank system [29], anaerobic-anoxic-aerobic moving bed bioreactors [20], and integrated rotating biological contactor-activated sludge system [31]. However, the values of μ max, and K B in this study were lower than those of the down-flow hanging sponge bioreactor by Nga [32], probably which used lower strength wastewater in their studies. respectively.…”

Section: Determination Of Kinetic Coefficientsmentioning

confidence: 56%

Performance and kinetic modeling of modified attached-growth anoxic-oxic-anoxic reactor for onsite sanitation system treating septic tank effluent

Koottatep

Kamngam

Chaiwong

2021

Environmental Engineering Research

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This paper investigated a combined process of a modified attached-growth anoxic-oxic-anoxic reactor (AG-AOAR) as a sustainable and effective post-treatment system for septic tank effluent was developed. The AG-AOAR was operated by varying hydraulic retention times (HRTs) from 24 to 72 h. The results showed that the AG-AOAR achieved highest removal efficiencies of 84, 66 and 91% of chemical oxygen demand (COD), total nitrogen (TN) and ammonium nitrogen (NH 4 -N), respectively, under the HRT of 72 h, resulting its effluent meeting the international and national discharge quality standards for non-sewered sanitation system. The Stover-Kincannon model was applicable to describe the kinetic constants of COD, TN, and NH 4 -N removal in the AG-AOAR (R 2 > 0.85). Accordingly, the maximum utilization rates (μ max ) were determined to be 41.1, 0.15 and 0.50 g/(L-d) for COD, TN and NH 4 -N removals, respectively, while the saturation constants (K B ) were 57.7, 0.12 and 0.51 g/(L-d), respectively. These constant values could be applied for the design of the AG-AOAR to produce treated effluent meeting desired standards.

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“…Kai dumblo koncentracija yra optimali ir pastovi, lengviau valdyti nuotekų valymo procesą. Tarp nuotekų valymo parametrų nusistovėjus dinaminei pusiausvyrai, įmanomas procesų modeliavimas (Nga et al, 2020). Kad būtų galima lengviau ir giliau suprasti nuotekų valymo VD sistemos procesus, IWA užduočių grupė sukūrė keletą veikliojo dumblo modelių (Ayoub, 2018).…”

Section: įVadasunclassified

Kintančios Koncentracijos Veikliojo Dumblo Procesai: Charakteristika Ir Analizė

Šarko

Kaladiun

Mažeikienė

2020

24-Osios Jaunųjų Mokslininkų Konferencijos „Mokslas – Lietuvos Ateitis“ Teminės Konferencijos Aplinkos Apsaugos Inžinerija Stra

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Nuotekų valymo įrenginių veikliojo dumblo darbas gali būti projektuojamas, optimizuojamas ir vertinamas taikant matematinį modeliavimą. Šio darbo tikslas – ištirti ilgalaikius (10 mėn. trukmės) mažojo individualaus NVĮ darbo duomenis, rasti priklau-somybes tarp parametrų ir patikrinti, ar yra galimybė optimizuoti vykstančius nuotekų valymo procesus taikant įprastus ASM (angl. Activated Sludge Model) modelius. Modeliuojant svarbiausi yra trys kinetiniai ir stechiometriniai kalibravimo parametrai: maksimalus heterotrofinis mikroorganizmų augimo greitis, aerobinis endogeninis heterotrofinės biomasės kvėpavimas ir aerobi-nis heterotrofinės biomasės prieaugis. Tarp šių parametrų turi būti dinaminė pusiausvyra, veikliojo dumblo koncentracija įrengi-nyje turi būti pastovi ir optimali. Išanalizavus gautus duomenis paaiškėjo, kad mažo našumo NVĮ-102 aeracinėje kameroje išma-tuota veikliojo dumblo koncentracija nėra pastovusis dydis. Tyrimo metu ši koncentracija kito nuo 3 iki 6,9 g/l. Kintant veikliojo dumblo koncentracijai, kinta jo apkrova organinėmis medžiagomis (g BDS5/g dumblo sausosios medžiagos), tūrinė apkrova, grąžinamojo veikliojo dumblo debitas (m3/d.), grąžinamojo veikliojo dumblo koncentracija, grąžinamojo veikliojo dumblo pro-centinis kiekis, deguonies poreikis. Apibendrinus galima teigti, kad mažojo NVĮ darbui optimizuoti įprasti ASM modeliai nėra pritaikyti.

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Kinetic modeling of organic and nitrogen removal from domestic wastewater in a down-flow hanging sponge bioreactor

Cited by 17 publications

References 43 publications

Biokinetic Study of Microbial Decontamination of Oilfield Produced Water

Biokinetic Study of Microbial Decontamination of Oilfield Produced Water

Performance and kinetic modeling of modified attached-growth anoxic-oxic-anoxic reactor for onsite sanitation system treating septic tank effluent

Kintančios Koncentracijos Veikliojo Dumblo Procesai: Charakteristika Ir Analizė

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