Filtering capacity of Daphnia magna on sludge particles in treated wastewater

Pau, Conxi; Serra, Teresa; Colomer, Jordi; Casamitjana, Xavier; Sala, Lluís; Kampf, R.

doi:10.1016/j.watres.2012.09.047

Cited by 41 publications

(46 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The settling rate K s , which has units of s -1 , can be considered to be proportional to the settling velocity of particles (v s ) divided by the height of the water column (H); i.e., K s = v s /H. The total Daphnia filtering rate (K Dph ) can be considered to be a linear function of the Daphnia concentration (C Dph ) and the individual Daphnia filtering rate (F) by following K Dph = FC Dph (Pau et al 2013). F is the individual filtering rate of each Daphnia and has dimensions of ml h -1 individual -1 .…”

Section: Theoretical Modelmentioning

confidence: 99%

“…The artificial food web system was composed of bacteria, Chlorella and Daphnia magna working in sequential chambers. Serra et al (2014) and Pau et al (2013) studied the wastewater filtration by Daphnia magna in both laboratory and mesocosm experiments. In the experiments of both Serra et al (2014) and Pau et al (2013), Daphnia preyed directly on the suspended sludge particles.…”

Section: Introductionmentioning

confidence: 99%

“…Serra et al (2014) and Pau et al (2013) studied the wastewater filtration by Daphnia magna in both laboratory and mesocosm experiments. In the experiments of both Serra et al (2014) and Pau et al (2013), Daphnia preyed directly on the suspended sludge particles. Serra et al (2014) did not found any relationship between the removal of E. coli and the particle retention by conventional treatments, in the range of particle sizes from 2.5 to 500 lm.…”

Section: Introductionmentioning

confidence: 99%

“…However, they did find that the Daphnia filtration method was more efficient in inactivating E. coli than the conventional particle retention methods, but less efficient than the inactivation attained by UV light. Pau et al (2013) found that Daphnia magna prey on a sludge population of particles with diameters below 30 lm and that the greater the Daphnia concentration is, the greater the removal of suspended sludge particles. They found efficiencies in the range of 12-30 % for Daphnia concentrations in the range from 10 to 50 ind l -1 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The hydraulic retention time on the particle removal efficiency by Daphnia magna filtration on treated wastewater

Serra

Colomer

2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

The study of low-cost techniques for the tertiary treatment of wastewater is of global interest; above all low-energy techniques that do not require the use of chemicals. In this study, a wastewater treatment technology based on the filtration by a zooplanktonic population (Daphnia magna) is studied in controlled laboratory and mesocosm experiments for different hydraulic retention times (HRT). The efficiency of the treatment is evaluated in terms of particle removal efficiency. From laboratory experiments, HRT over 12 h and Daphnia concentrations above 50 individuals l -1 guarantee a particle removal efficiency greater than 30 %. However, low HRT of 6 h would require Daphnia concentrations above 70 individuals l -1 in order to obtain a particle removal efficiency of 20 %. The minimum removal efficiency of 2 % was for HRT = 3 h, independent of the Daphnia concentration. In the mesocosm, the growth of Daphnia individuals enhanced Daphnia magna filtering rates and higher removal efficiencies than those in the laboratory for the same HRT range. In the mesocosm experiments E. coli concentrations were reduced to a maximum of 2 logarithmic units. A balance equation model is proposed to predict particle removal efficiencies for varying HRT.

show abstract

Section: Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The hydraulic retention time on the particle removal efficiency by Daphnia magna filtration on treated wastewater

Serra

Colomer

2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Daphnids will remove fine suspended particles in the size range of 0.5 to 40 µm and pathogens such as coliforms and E. coli [10]-although the unit is not expected to provide the level of disinfection necessary for direct water re-use. However, reductions in turbidity resulting from removal of suspended solids will improve the efficacy of any final ultraviolet (UV) disinfection stage [11].…”

Section: Daphniafiltermentioning

confidence: 99%

EU Horizon 2020 Research for A Sustainable Future: INNOQUA—A Nature-Based Sanitation Solution

Tompkins¹,

Bumbac

Clifford

et al. 2019

Water

View full text Add to dashboard Cite

This paper explores the experiences of partners in the multi-national, EU-funded INNOQUA project, who have developed and are currently demonstrating the potential for novel nature-based, decentralised wastewater treatment solutions in ten different countries. Four solutions are under investigation, each at different Technology Readiness Levels (TRLs): Lumbrifilter; Daphniafilter; Bio-Solar Purification unit; UV disinfection unit. An overview of the solutions is provided, along within data from pilot sites. The project is currently entering an intensive demonstration phase, during which sites will be open for visits and act as the focus for training and dissemination activities on sustainable wastewater treatment. Barriers to market for nature-based solutions are also explored.

show abstract

Effects of Ammonia and Density on Filtering of Commensal and Pathogenic Escherichia coli by the Cladoceran Daphnia magna

Nørgaard

Roslev

2016

Bull Environ Contam Toxicol

View full text Add to dashboard Cite

Grazing by cladocerans can reduce the survival of enteric bacteria associated with fecal pollution. This study examined the potential of Daphnia magna to filter commensal and pathogenic Escherichia coli of human origin. Grazing on commensal and pathogenic bacteria was comparable, but slightly greater at 20 compared to 15 and 25°C. Filtering activity was strongly dependent on D. magna and E. coli densities at environmentally relevant bacterial concentrations. Maximum feeding rates were >10 cells h daphnid, clearance rates were 1-6 mL h daphnid, and filtering was independent of bacterial cell sizes between 0.7 and 1.8 µm. Filtering and ingestion of E. coli by D. magna was susceptible to acute inhibition by unionized ammonia with a 24 h EC50 of 0.18 mg L NH-N, and a LOEC of 0.09 mg L NH-N. The study indicated that biological and chemical constraints should be considered when applying Daphnia for attenuation of fecal pollution.

show abstract

Filtering capacity of Daphnia magna on sludge particles in treated wastewater

Cited by 41 publications

References 28 publications

The hydraulic retention time on the particle removal efficiency by Daphnia magna filtration on treated wastewater

The hydraulic retention time on the particle removal efficiency by Daphnia magna filtration on treated wastewater

EU Horizon 2020 Research for A Sustainable Future: INNOQUA—A Nature-Based Sanitation Solution

Effects of Ammonia and Density on Filtering of Commensal and Pathogenic Escherichia coli by the Cladoceran Daphnia magna

Contact Info

Product

Resources

About