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Ultrasonic treatment FAQ
Which are the effects of DUMO
Algacleaner on algae?
• Ultrasound produces pressure variations
that affect algae in several...
• These effects cause important damages to algae.
• Finally, algae die and fall down to bottom.
Untreated pond water Treat...
Does DUMO Algacleaner cause
the same effects in all the
aquatic ecosystems?
The effects depend
on several factors:
1) Shap...
2) Qualitative and
quantitative composition of
phytoplankton community:
 Cyanobacteria (green-blue algae)
 Diatoms
 Chl...
3) Algae growth stage
● Lag phase
● Exponential growth rate
● Decreasing growth rate
● Stationary phase
● Death
The key fa...
How much time is necessary to
notice the effects?
• Reaction time depends heavily on many
factors of the aquatic ecosystem...
After treatment, there are lots of
algae on the surface...
• Sometimes algae is
dead, but gas vacuoles
are not completely
...
Is DUMO Algacleaner enough to
solve the problem with algae?
• DUMO Algacleaner is normally enough.
• However, sometimes it...
When is it appropriate to install
DUMO Algacleaner?
• As soon as possible, as it's:
– ecological.
– avoids the use of anti...
Case study
0 days 7 days 14 days 21 days 28 days 35 days 42 days
0,00
500,00
1.000,00
1.500,00
2.000,00
2.500,00
3.000,00
...
DUMO Algacleaner benefits
Ecological
Non hamful
Clean
Easy to install
24/7 Service
Minimal mantenance
Low power
consumption
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DUMO Algacleaner - Ultrasonic treatment FAQ

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Frequently asked questions about the ultrasonic system against algae blooms, DUMO Algacleaner.

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DUMO Algacleaner - Ultrasonic treatment FAQ

  1. 1. Ultrasonic treatment FAQ
  2. 2. Which are the effects of DUMO Algacleaner on algae? • Ultrasound produces pressure variations that affect algae in several ways: – Rupture of gas vacuole. – Effects on cell membrane and/or wall. – Free-radical reactions. – Effects on photosyntesis. 1) Rajasekhar,P., Fan, L., Nguyen, T., Roddick, F.A. 2012. A review of the use of sonication to control cyanobacterial blooms. Water Research 46: 4319-4329.
  3. 3. • These effects cause important damages to algae. • Finally, algae die and fall down to bottom. Untreated pond water Treated pond water
  4. 4. Does DUMO Algacleaner cause the same effects in all the aquatic ecosystems? The effects depend on several factors: 1) Shape, dimensions and use.
  5. 5. 2) Qualitative and quantitative composition of phytoplankton community:  Cyanobacteria (green-blue algae)  Diatoms  Chlorophyta (green algae)  Chrysophyta (golden-brown algae)  Dinoflagellates  Euglenophyta
  6. 6. 3) Algae growth stage ● Lag phase ● Exponential growth rate ● Decreasing growth rate ● Stationary phase ● Death The key factor is to carry out the ultrasonic treatment early in the bloom life cycle, preferably during exponential growth phase (Purcell, 2009)2. 2) Purcell, D. 2009. Control of algal growth in reservoirs with ultrasound. PhD thesis. Department of sustainable systems. Cranfield University. UK. 227 pp.
  7. 7. How much time is necessary to notice the effects? • Reaction time depends heavily on many factors of the aquatic ecosystem dynamics. • Usually, 2-3 weeks are enough.
  8. 8. After treatment, there are lots of algae on the surface... • Sometimes algae is dead, but gas vacuoles are not completely damaged so algae float. • The best solution is to remove algae from the surface. • This reduces eutrophication levels. Algae floating on the surface of a pond
  9. 9. Is DUMO Algacleaner enough to solve the problem with algae? • DUMO Algacleaner is normally enough. • However, sometimes it's necessary additional actions to increase its efficiency.
  10. 10. When is it appropriate to install DUMO Algacleaner? • As soon as possible, as it's: – ecological. – avoids the use of anti-algae chemicals. – a middle/long-term treatment.
  11. 11. Case study 0 days 7 days 14 days 21 days 28 days 35 days 42 days 0,00 500,00 1.000,00 1.500,00 2.000,00 2.500,00 3.000,00 3.500,00 Chl Irrigation pond with cyanophyte Mycrocystis aeruginosa bloom in Seville (Southern Spain). 0 days 7 days 14 days 21 days 28 days 35 days 42 days 0 50 100 150 200 250 DBO 5 • DUMo Algacleaner can reduce algal biomass in 42 days. • Effects become evident in just 2 weeks. • DUMO Algacleaner contribute to water quality improvement (decrease of DBO5 parameter) Test carried out by the Experimental Centre of New Technologies of Water (CENTA) in 2014 (www.centa.es)
  12. 12. DUMO Algacleaner benefits Ecological Non hamful Clean Easy to install 24/7 Service Minimal mantenance Low power consumption

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