Effect of drilling mud addition on activated sludge and processes in sequencing batch reactors

Babko, Roman; Jaromin-Gleń, Katarzyna; Łagód, Grzegorz; Pawłowska, Małgorzata; Pawłowski, Artur

doi:10.1080/19443994.2015.1033137

Cited by 14 publications

(11 citation statements)

References 16 publications

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“…This is especially important, since the activatedsludge organisms do not function in an environment with the parameters of raw wastewater. This aspect has been discussed in detail in previous work (Babko et al, 2016(Babko et al, , 2017. Second, the technological efficiency omits the actual amounts of pollutants removed during the treatment; hence, the same efficiency may correspond to varying amounts of pollutants removed during the treatment.…”

Section: Influence Of Drilling Fluid On Treated Sewage Parametersmentioning

confidence: 97%

“…The heterogeneous composition of drilling waste requires the use of many different management methods, from physical and chemical methods to biological treatment (Cuttings Treatment Technology Evaluation, 2009;Ball et al, 2012;Onwukwe and Nwakaudu, 2012). Yang et al (2013) and Babko et al (2016Babko et al ( , 2017 found that significant removal of chemical oxygen demand (COD) in water-based fluids can be achieved in laboratory sequencing batch reactors (SBRs) with activated sludge from a municipal wastewater treatment plant (WWTP). However, considering the negative biological effects of offshore discharge of drilling waste on marine filter-feeding organisms (Barlow and Kingston, 2001), it may be supposed that the cotreatment of DF with municipal wastewater may cause adverse changes in the ecological structure of the activated sludge, in which filter feeders are the most important group.…”

Section: Introductionmentioning

confidence: 99%

“…However, considering the negative biological effects of offshore discharge of drilling waste on marine filter-feeding organisms (Barlow and Kingston, 2001), it may be supposed that the cotreatment of DF with municipal wastewater may cause adverse changes in the ecological structure of the activated sludge, in which filter feeders are the most important group. Regardless of the changes in chemical composition caused by the DF, adding it to wastewater greatly increases turbidity and the total amount of suspended solids (TSS) (Babko et al, 2016(Babko et al, , 2017. This may lead to a deterioration in the wastewater treatment process related to qualitative and quantitative changes in the activated sludge community.…”

Section: Introductionmentioning

confidence: 99%

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Short‐term Influence of Two Types of Drilling Fluids on Wastewater Treatment Rate and Eukaryotic Organisms of Activated Sludge in Sequencing Batch Reactors

et al. 2017

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This work presents the results of studies on the impact of spent drilling fluids cotreated with municipal wastewater on the rate of the wastewater treatment process and the structure of the community of eukaryotic organisms inhabiting an activated sludge. The studies were conducted under laboratory conditions in sequencing batch reactors. The effect of added polymer-potassium drilling fluid (DF1) and polymer drilling fluid (DF2) at dosages of 1 and 3% of wastewater volume on the rate of removal of total suspended solids, turbidity, chemical oxygen demand, and the content of total and ammonium nitrogen were analyzed, taking into account the values of these parameters measured at the end of each operating cycle. In addition to the impacts on the aforementioned physicochemical indices, the influence of drilling fluid on the biomass of various groups of eukaryotes in activated sludge was analyzed. The impact of the drilling fluid was highly dependent on its type and dosage. A noticeable slowdown in the rate of the wastewater treatment process and a negative effect on the organisms were observed after the addition of DF2. This effect intensified after an increase in fluid dose. However, no statistically significant negative changes were observed after the introduction of DF1. Conversely, the removal rate of some of the analyzed pollutant increased.

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Section: Influence Of Drilling Fluid On Treated Sewage Parametersmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Short‐term Influence of Two Types of Drilling Fluids on Wastewater Treatment Rate and Eukaryotic Organisms of Activated Sludge in Sequencing Batch Reactors

et al. 2017

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“…If the anoxic volume is kept unchanged, the nitrate concentration will increase in the effluent, potentially causing problematic issues in the sedimentation tank (floating sludge), demanding additional method of sludge treatment or usage of membranes [10][11][12][13][14][15][16]. The A/O system is characterized by the same configuration as in the case of the Phoredox, Bardenpho system; however, the anaerobic zone is compartmentalized, inducing a plug-flow regime that improves the removal capacity of phosphorus as well as facilitates converting the easily biodegradable material to acetate [11][12][13][14][15][16]. While comparing the existing schemes of biological phosphate removal or recovery from wastewater presented in literature, it is necessary to distinguish their advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

New Approaches in Biological Wastewater Treatment Aimed at Removal of Organic Matter and Nutrients

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Kuzminskiy

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et al. 2019

Ecological Chemistry and Engineering S

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The article presents the developed anaerobic-aerobic wastewater treatment technologies. These technologies aimed at removing the organic matter, nitrogen and phosphorus by means of microorganisms immobilized on fibrous carrier surfaces. The results of the laboratory research show the high efficiency of milk wastewater treatment. The following degrees of reduction were achieved for the pollutant indicators: COD -86.7-93 %, total nitrogen - 96.9-97.9 %. Compared to the traditional treatment technologies applied in Ukraine, these values are high. The concentration of organic matters and biomass of not attached bacteria decreased in bioreactor chambers. When the purification process ends, a small amount of excess biomass remains; therefore, its self-oxidation and self-regulation occurs as a result of consumption by the organisms occupying higher levels of trophic chains. The use of anaerobic-aerobic bioreactors system for the treatment of wastewater enables achieving high outflow quality and prevents the suspended substances from slipping. Immobilization of microorganisms on the first stage of the technology prevents the formation of big amount of excessive sludge and removes biomass from the bioreactor, which allows the technology even for the heavily polluted wastewater. In reactors containing immobilized microorganisms, the organic matter compounds used in subsequent reactors for phosphate accumulation are split. The presented biotechnology saves electric energy, provides sufficient quality of treatment, and ensure the compliance of treated wastewater with the effluent standards.

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“…It also allows adjusting the length and order of individual phases [14][15][16][17][18][19]. The basic operation phases in SBRs are as follows: filling, mixing, aeration, settling, decantation, idling [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Modelling of sequencing batch reactor operating at various aeration modes

et al. 2019

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The presented study involved designing a computer model of a sequencing batch reactor (SBR) at laboratory scale. The data pertaining to the technical aspects of the bioreactor and quality indicators of wastewater constituted the input for the employed simulation tool, i.e. GPS-X software package. The results of a simulation involving a 12-hour operation cycle are presented in this work; each cycle included 6 phases: filling, mixing, aeration, settling, decantation and idling (wasting of excess sludge). The simulations were carried out using two different modes of aeration. Concentration of dissolved oxygen (DO) was maintained at constant level of 2 mgO2/L using the PID controller in the first case. On the other hand, variation of DO concentration was employed in the aeration stage of the second variant, which was achieved using appropriately elaborated set point of oxygen concentration, considering the specific intervals in oxygen supply. The changes observed in DO concentration varied from 0.5 to 2.5 mgO2/L. This research proved that the second variant, involving variation of DO concentration, was characterised by reduced levels of pollution indicators in treated sewage, as well as lower consumption of electricity, both of which contributed towards improving the effluent quality and resulted in significant degree of dephosphatation.

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Effect of drilling mud addition on activated sludge and processes in sequencing batch reactors

Cited by 14 publications

References 16 publications

Short‐term Influence of Two Types of Drilling Fluids on Wastewater Treatment Rate and Eukaryotic Organisms of Activated Sludge in Sequencing Batch Reactors

Short‐term Influence of Two Types of Drilling Fluids on Wastewater Treatment Rate and Eukaryotic Organisms of Activated Sludge in Sequencing Batch Reactors

New Approaches in Biological Wastewater Treatment Aimed at Removal of Organic Matter and Nutrients

Modelling of sequencing batch reactor operating at various aeration modes

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