Kinetic studies on agrochemicals wastewater treatment by aerobic activated sludge process at high MLSS and high speed agitation

Karkare, M. V.; Murthy, Z.V.P.

doi:10.1016/j.jiec.2012.01.029

Cited by 13 publications

(2 citation statements)

References 29 publications

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“…Kinetic models have presently used in environmental engineering for designing and optimizing the wastewater treatment. Especially, many kinetic models have developed to investigate the biodegradation of wastewater in both anaerobic processes [23,24] and aerobic processes [25][26][27][28][29]. Many kinetic models have been studied to determine the substrate removal rate in wastewater treatment such as First-order, Grau second-order, Monod and Stover-Kincannon [17,18,20].…”

Section: Introductionmentioning

confidence: 99%

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

Nga¹,

Hiep

Hung

2019

Environmental Engineering Research

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A down-flow hanging sponge (DHS) bioreactor was operated for the treatment of domestic wastewater. The Stover-Kincannon model was applied for kinetic evaluation of the reactor performance during the operational period. As a result, the coefficient of determination (R 2) for straight lines of effluent concentration from the experimental data and from the predictive data of BOD5; NH4 +-N; and TN were 0.9727; 0.9883; and 0.9934, respectively. The calculation of saturation value constant (Umax-g L-1 d-1) and maximum utilization rate constant (KB-g L-1 d-1) were 56.818 and 75.034 for BOD5; 2.960 and 4.713 for NH4 +-N; 2.810 and 8.37 for TN, respectively. The study suggests that Stover-Kincannon model can be used for effective evaluation of kinetic removal of BOD5; NH4 +-N; and TN from domestic wastewater treated in a DHS bioreactor.

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Section: Introductionmentioning

confidence: 99%

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

Nga¹,

Hiep

Hung

2019

Environmental Engineering Research

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“…However, the high oxygen demand required for high-degree biological conversion makes the process costly [27][28]. On the other hand, in high-loaded systems, adsorption of colloidal organic matter onto mixed-liquor suspended-solids (MLSS) significantly contributes to the removal of organic matter via the biological pathway [29]. The colloidal organic substances adsorbed on MLSS are removed by settling in the secondary settling tank.…”

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confidence: 99%

Nutrient Removal by Chemical Post Treatment with Lime Following the Biological Stage

Mazlum¹,

Ikizoglu²

2018

Pol. J. Environ. Stud.

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Activated sludge is the common name of the suspended-growth biological processes used for the treatment of domestic and low-to medium-strength industrial wastewater. Activated sludge provides the conversion of organic matter into microbial culture, and then reproduced biomass is easily separated by gravity settling. Thereby organic matter content is eliminated from the influent. Activated sludge also provides adequate biological pathways for the elimination of nitrogen and phosphorus nutrients from wastewater by applying advance treatment methods [1-7]. The usual forms of phosphorus nutrients found in aquatic environments include orthophosphate, polyphosphate, and organic phosphate. Phosphorus compounds undergo hydrolysis and are converted to

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Assessment of the operational performances of two activated sludge systems in Kuwait

Abusam

Mydlarczyk

2018

Environ Monit Assess

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Activated sludge systems (ASSs) are the most globally used wastewater treatment systems. However, there is very little information about the operational practices of ASSs in developing countries. This paper presents how the Riqqa and Umm-Al-Haiman ASSs, in Kuwait, are operated and the methodology used to evaluate and compare their performances. Over a period of 9 months, weekly samples of the influents, aeration tank mixed liquors, and secondary effluents were collected and analyzed according to standard methods. Accordingly, the operational variables of the systems were estimated. The obtained results indicate that the plants were not operated within their recommended design values. The Riqqa ASS was inadequately aerated and hydraulically and organically overloaded, while the Umm-Al-Haiman ASS was operated at a very high mixed liquor suspended solids (MLSS) value. The method used by this study proved to be useful for identifying the operational problems of the studied ASSs, and it can be used to evaluating the performances of other ASSs.

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Kinetic studies on agrochemicals wastewater treatment by aerobic activated sludge process at high MLSS and high speed agitation

Cited by 13 publications

References 29 publications

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

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

Nutrient Removal by Chemical Post Treatment with Lime Following the Biological Stage

Assessment of the operational performances of two activated sludge systems in Kuwait

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