The role of Lecane rotifers in activated sludge bulking control

Fiałkowska, Edyta; Pajdak‐Stós, Agnieszka

doi:10.1016/j.watres.2008.02.001

Cited by 54 publications

(57 citation statements)

References 12 publications

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“…In addition, Daphnia spp. can mechanically interfere with rotifers (Gilbert & Stemberger, 1985;Gilbert, 1989), which are also bacterioplankton consumers (Agasild & Nõges, 2005;Fiałkowska & Pajdak-Stós, 2008), and further contribute to an increase in bacterioplankton. In support of this hypothesis, we found high selection coefficients for ciliates and rotifers in the TP2 experiment, together with an increase in bacterioplankton.…”

Section: Discussionmentioning

confidence: 99%

Impact of different developmental stages of Daphnia magna (Straus) on the plankton community under different trophic conditions

et al. 2009

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In situ 24-h incubation experiments were performed to analyse the grazing effects of Daphnia magna on a planktonic microbial community. Three field grazing experiments under different nutrient concentrations were carried out on treated effluents of a wastewater treatment plant. The grazing effects of three different D. magna size classes (small (0.6-1.6 mm), medium (1.7-2.5 mm) and large individuals (2.6-3.7 mm)) were compared. The different sizes classes had similar effects on the plankton community. However, our results showed big differences in effects among experiments. Our findings suggest that in spite of D. magna's non-selective feeding behaviour and the fact that different developmental stages (i.e. its size) had similar effects on the microbial planktonic community, these effects can differ according to the initial structure and composition of the community and the resulting cascading trophic interactions. Moreover, D. magna effects can be direct through grazing (as is the case with ciliates), or indirect through trophic cascade interactions (as is the case with bacteria).

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Section: Discussionmentioning

confidence: 99%

Impact of different developmental stages of Daphnia magna (Straus) on the plankton community under different trophic conditions

et al. 2009

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“…Temperature was shown to be negatively correlated with the M. parvicella index and positively correlated with an index of rotifers [5]. Previously, rotifers have been shown to be able to control M. parvicella density [6]. Interestingly, in activated sludge samples without rotifers, temperatures in the range of 8-20˚C did not affect the density of filamentous bacteria.…”

Section: Desalination and Water Treatmentmentioning

confidence: 82%

“…As Fiałkowska and colleagues [7] have shown, the growth rate of Lecane inermis drastically decreases as the temperature decreases below 10˚C [6]. At the lowest tested temperature (8˚C), only one of four clones maintained its ability to reproduce.…”

Section: Desalination and Water Treatmentmentioning

confidence: 92%

“…(2016) [1][2][3][4][5][6][7][8] www.deswater.com doi: 10.1080/19443994.2016.1192565 due to seasonally low air temperature and/or snowmelt [1]. There are some discrepancies between the observations made in treatment plants where M. parvicella growth is promoted at low temperatures [1][2][3] and laboratory research regarding the growth kinetics of the two strains of this bacterium in pure culture, showing that the optimum temperature for its growth is above 22˚C [4].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

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Lecane tenuiseta (Rotifera, Monogononta) as the best biological tool candidate selected for preventing activated sludge bulking in a cold season

Fiałkowska

Pajdak‐Stós

Fyda

et al. 2016

Desalination and Water Treatment

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“…Little attention has been paid to the possibility of controlling fi lamentous bacteria using organisms that occur naturally in the activated sludge. Recently a new, promising biological method was described, having an additional advantage of reducing the excessive sludge production if suffi ciently effective consumers are used [5]. Briefl y, the idea consists in rotifers mass breeding in chambers submerged in bioreactor volume and letting them out if sludge bulking occurred.…”

Section: Introductionmentioning

confidence: 99%

The Toxicity of Aluminium Salts to Lecane Inermis Rotifers: Are Chemical and Biological Methods Used to Overcome Activated Sludge Bulking Mutually Exclusive?

Klimek¹,

Fiałkowska²,

Fyda³

et al. 2013

Archives of Environmental Protection

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Abstract:The aim of this study was to assess the effects of two fl occulants that are often used to overcome activated sludge bulking problems -aluminium chloride, AlCl 3 , and aluminium sulphate, Al 2 (SO 4 ) 3 -on Lecaneinermis (Rotifera, Monogononta) at three different temperatures: 8, 15 and 20°C. The mean EC50 value (effective concentration, mg dm -3 ) calculated for the 24 h mortality test was 0.012 mg Al 3+ dm -3. Next, the effects of low concentrations of the Al-salts on the population development from single individuals (parthenogenetic females) were tested in a 21-day experiment. At concentrations as low as EC4.8 and EC0.48, both Al-salts affected rotifer population negatively. However, temperature was the most pronounced factor that modifi ed the toxicity of the Al-salts to the rotifers. On the 12 th day of the experiment, there were signifi cant interactions between temperature and the Al-salts, indicating that the chemicals were more toxic to the rotifers at 20°C than at lower temperatures. The weaker rotifers sensitivity to Al-salts (especially to AlCl 3 ) in temperatures below 15°C, when the biggest problems associated with sludge bulking occurs,may means use both rotifers and chemicals reasonable and effective.

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The role of Lecane rotifers in activated sludge bulking control

Cited by 54 publications

References 12 publications

Impact of different developmental stages of Daphnia magna (Straus) on the plankton community under different trophic conditions

Impact of different developmental stages of Daphnia magna (Straus) on the plankton community under different trophic conditions

Lecane tenuiseta (Rotifera, Monogononta) as the best biological tool candidate selected for preventing activated sludge bulking in a cold season

The Toxicity of Aluminium Salts to Lecane Inermis Rotifers: Are Chemical and Biological Methods Used to Overcome Activated Sludge Bulking Mutually Exclusive?

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