Suitability of Sludge Biotic Index (SBI), Sludge Index (SI) and filamentous bacteria analysis for assessing activated sludge process performance: the case of piggery slaughterhouse wastewater

Pedrazzani, Roberta; Menoni, Laura; Nembrini, Stefano; Manili, Livia; Bertanza, Giorgio

doi:10.1007/s10295-016-1767-1

Cited by 13 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Almost all the biological processes have been explored in terms of biomass composition (bacteria, protozoa, metazoan, and fungi) and activity: conventional activated sludge, attached biomass, membrane reactors, and treating either municipal [27][28][29][30][31][32][33][34] or industrial wastewater [35][36][37][38][39]. Likewise, identification and quantification of microorganisms operating under different conditions (aerobic, anoxic, and anaerobic) have been reported [25,[40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Abbà

Collivignarelli

Manenti

et al. 2017

Journal of Chemistry

Self Cite

View full text Add to dashboard Cite

A thermophilic aerobic membrane reactor (TAMR) treating high-strength COD liquid wastes was submitted to an integrated investigation, with the aim of characterizing the biomass and its rheological behaviour. These processes are still scarcely adopted, also because the knowledge of their biology as well as of the physical-chemical properties of the sludge needs to be improved. In this paper, samples of mixed liquor were taken from a TAMR and submitted to fluorescent in situ hybridization for the identification and quantification of main bacterial groups. Measurements were also targeted at flocs features, filamentous bacteria, and microfauna, in order to characterize the sludge. The studied rheological properties were selected as they influence significantly the performances of membrane bioreactors (MBR) and, in particular, of the TAMR systems that operate under thermophilic conditions (i.e., around 50 ∘ C) with high MLSS concentrations (up to 200 gTS L −1 ). The proper description of the rheological behaviour of sludge represents a useful and fundamental aspect that allows characterizing the hydrodynamics of sludge suspension devoted to the optimization of the related processes. Therefore, in this study, the effects on the sludge rheology produced by the biomass concentration, pH, temperature, and aeration were analysed.

show abstract

Section: Introductionmentioning

confidence: 99%

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Abbà

Collivignarelli

Manenti

et al. 2017

Journal of Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nutrient and organic matter removal processes carried out in the activated sludge are based on the activity of the studied microorganisms, thus maintaining optimal conditions for their growth and development is necessary for a better process control and management 18 . The dynamics and organization of microbial communities, along with biotic components of the activated sludge, determine its quality and the efficiency of the depuration process 16 .…”

Section: Discussionmentioning

confidence: 99%

“…WWTP performance should guarantee a certain effluent quality which will vary according to the posterior uses of water. Different techniques have been developed to measure activated sludge quality, such as Sludge Biotic Index (based on the presence and abundance of certain protists) or the Sludge Index (considering macroscopic and microscopic activated sludge features) [16][17][18] . A complementary tool to control microbial community and activated sludge stability based on the bacterial populations is necessary to assess WWTP performance and prevent activated sludge disruptions.…”

mentioning

confidence: 99%

Tuning up microbiome analysis to monitor WWTPs’ biological reactors functioning

Celis

Belda

Ortiz‐Álvarez

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Wastewater treatment plants (WWtps) are necessary to protect ecosystems quality and human health. Their function relies on the degradation of organic matter and nutrients from a water influent, prior to the effluent release into the environment. In this work we studied the bacterial community dynamics of a municipal WWTP with a membrane bioreactor through 16S rRNA gene sequencing. The main phyla identified in the wastewater were Proteobacteria, Bacteroidetes, Chloroflexi, Planctomycetes and Actinobacteria. The WWTP is located in Spain and, like other studied WWTP in temperate climate zones, the temperature played a major role in community assembly. Seasonal community succession is observed along the two years sampling period, in addition to a continual annual drift in the microbial populations. the core community of the WWtp bioreactor was also studied, where a small fraction of sequence variants constituted a large fraction of the total abundance. this core microbiome stability along the sampling period and the likewise dissimilarity patterns along the temperature gradient makes this feature a good candidate for a new process control in WWtps.

show abstract

“…This indicator has even been applied for researching slaughterhouse wastewater treatment [32]. The authors have identified SBI as a very useful indicator for determining both the condition of activated sludge and the analysis of biological working conditions of treatment plants.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Results from Microscopic Tests Concerning the Quality of Activated Sludge and Effluent

Sowińska

Pawlak

Mazurkiewicz

et al. 2017

Water

View full text Add to dashboard Cite

Physicochemical studies on wastewater quality and microscopic analyses of activated sludge are necessary to properly evaluate the condition of activated sludge. The aim of this study was to evaluate the application of the sludge biotic index to determine when a change in treatment quality is short-lived, caused by, e.g., a change in influent quality or quantity, and when it indicates adverse changes in the biocenosis of activated sludge, which would very likely result in the lower efficiency of wastewater treatment in the near future. The objects of the study were two identical parallel running small wastewater treatment plants. The following indicators of contamination were analyzed: the chemical oxygen demand (COD), biochemical oxygen demand (BOD 5 ), and total suspended solids (TSS). The authors additionally carried out a microscopic analysis. The study confirmed a correlation between the sludge biotic index and the removal efficiency of COD and BOD 5 ; however, no correlation was found between the sludge biotic index and the removal efficiency of total suspended solids. The presence of metazoan microorganisms coincided in time with a good effluent treatment efficiency. When their quantity declined, a decrease in the efficiency of wastewater treatment was also observed.

show abstract

Suitability of Sludge Biotic Index (SBI), Sludge Index (SI) and filamentous bacteria analysis for assessing activated sludge process performance: the case of piggery slaughterhouse wastewater

Cited by 13 publications

References 22 publications

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Rheology and Microbiology of Sludge from a Thermophilic Aerobic Membrane Reactor

Tuning up microbiome analysis to monitor WWTPs’ biological reactors functioning

Comparison of the Results from Microscopic Tests Concerning the Quality of Activated Sludge and Effluent

Contact Info

Product

Resources

About