Respirometry in control of the activated sludge process

Spanjers, Henri; Vanrolleghem, Peter; Olsson, Gustaf; Dold, Peter

doi:10.2166/wst.1996.0424

Cited by 110 publications

(104 citation statements)

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“…The Michaelis-Menten curve expressing the relation between the consumption rate of a rapidly biodegradable substrate, S(t), and its concentration within the activated sludge sample (S S ) has been used to determine the  max,H and k s values [24,26]. The substrate removal rate as a function of time has been calculated from the experimental respirogram using Equation (17):…”

Section: Methodsmentioning

confidence: 99%

Assessment of Biological Kinetics in a Conventional Municipal WWTP by Means of the Oxygen Uptake Rate Method

et al. 2014

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Pollution control of surface water bodies requires stringent checks on wastewater treatment plants performances. The satisfactory operation of biological treatment, commonly performed by means of activated sludge processes, requires a number of controlling and monitoring procedures. Suitable respirometric techniques for the determination of the kinetic parameters that regulate biological processes have been implemented in order to achieve this aim. This paper describes the results of an experimental research carried out in a conventional Italian municipal wastewater treatment plant. Particularly, the research has been finalized to both evaluate the biological process for the removal of biodegradable pollutants, such as carbonaceous substrates and ammonia nitrogen, and to collect data in order to evaluate a possible plant upgrade. Heterotrophic and autotrophic biomass kinetic parameters have been examined using respirometric techniques based on oxygen uptake measurements. The research performed makes a OPEN ACCESS Sustainability 2014, 6 1834 valuable contribution toward verifying the reliability of the values proposed in the literature for some kinetic parameters, which have been commonly used for a long time.

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Section: Methodsmentioning

confidence: 99%

Assessment of Biological Kinetics in a Conventional Municipal WWTP by Means of the Oxygen Uptake Rate Method

et al. 2014

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“…These parameters are usually estimated by means of respirometric tests [ELSHORBAGY, SHAWA-QFAH 2015; KATIPOGLU-YAZAN et al 2015]. Indeed, the rate of breath is directly related to two important biochemical processes which must be controlled in a WWTP: growth of biomass and substrate consumption [SPANJERS et al 1996].…”

Section: Model Calibration and Validationmentioning

confidence: 99%

Dynamic simulation for wastewater treatment plants management: Case of Souk-Ahras region, north-eastern Algeria

Dairi

Djebbar

Hammar

et al. 2017

Journal of Water and Land Development

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Treatment performances of two wastewater treatment plants (WWTPs), located in North-Eastern Algeria (Souk-Ahras and Sedrata) were tested using ASM1 model.The model, to be considered as a decision tool for the appropriate management of activated sludge systems, served for the prediction of both WWTP behaviours under different operating conditions. In Sedrata WWTP the first management scenarios is based on an increase of inflow rate, taking into account a new transfer volume from a nearby zone. In a second scenerio, the ultimate flow of 40 000 m 3 ·d -1 is estimated. Regarding Souk-Ahras WWTP, three scenarios were tested. The first tested the impact of an increase of the extraction flow rate and yielded a reduction by 37% of sludge production. The second dealt with the management of the mass budget of substrata and biomass. Finally, the third application was devoted to the estimation of the plant ultimate capacity, estimated to be 60 000 m 3 ·d -1.

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“…The respirometric technique is an indirect, simple and efficient method of determining the degree to which the biomass organic fraction decomposes, in relation to two important biochemical phenomena: the biological activity and the substrate consumption [11].…”

Section: Introductionmentioning

confidence: 99%

“…As reported by [11], the respirometric index represents the quantity of oxygen consumed by microorganisms per unit of present volatile solids and over time.…”

Section: Introductionmentioning

confidence: 99%

“…The static methods performed at constant volume or at constant pressure have the disadvantage of limiting diffusion and dispersion of oxygen in the biomass and therefore slowing down the decomposition of the organic fraction [11]. In dynamic systems, the continuous aeration of the substrate guarantees an optimum oxygen concentration for the biological activity at each moment of time [12,14].…”

Section: Introductionmentioning

confidence: 99%

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Respirometric Index and Biogas Potential of Different Foods and Agricultural Discarded Biomass

et al. 2016

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Abstract:The biological stability of biomass is an important parameter for treatment plant design, process control or compost use. Measuring the biological reactivity of waste with the help of indicators such as respirometric indexes (RI) becomes an important tool to prevent the significant environmental impact of biodegradable wastes in accordance with European legislation. The aim of this paper is to show the importance of the RI technique as a tool to establish further uses of biomass such as fertilizer or biogas. The respirometric process length for different types of biomass (grape marc, apple pomace and olive pomace) was quantified. Higher moisture content seemed to favor the biological activity during the respirometric experiments and shorten the length of the process. The duration of olive pomace respirometry did not exceed 3 days, while the respirometric activity of apple scraps the lasted approximately 2 days. The highest RI values were encountered for the apple pomace, 4888 mgO 2 ·kg VS −1 ·h −1 . The majority of the discarded biomasses are categorized in the third class of stability materials in the course of degradation. This technique is important to detect the biodegradability of substrates, as well as to gain insight into the quantity and generation rate of biogas produced, information that is important from an engineering management perspective.

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Respirometry in control of the activated sludge process

Cited by 110 publications

References 0 publications

Assessment of Biological Kinetics in a Conventional Municipal WWTP by Means of the Oxygen Uptake Rate Method

Assessment of Biological Kinetics in a Conventional Municipal WWTP by Means of the Oxygen Uptake Rate Method

Dynamic simulation for wastewater treatment plants management: Case of Souk-Ahras region, north-eastern Algeria

Respirometric Index and Biogas Potential of Different Foods and Agricultural Discarded Biomass

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