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Green Algae

Green Algae

Ultrasonic algae control, how does that work?

The biofilm and algae control is now possible without damaging the environment with technology LG Sonic. These highly reliable systems, efficient and safe use ultrasound to control algae and unwanted microorganisms in the water.

  This innovative technology has been found and developed by the Dutch company LG Sound after 2 years of cooperation with several European universities in a project of 1.5 million Europeans. LG Sonic technology controls algae, biofilm and some types of bacteria by sending ultrasonic sound waves at several specific frequencies in water, which control algae in the resonance and acoustic pressure.

To establish optimal control of algae, LG Sonic systems use a "mixture" frequency ultrasound of a certain power that is emitted in water by specific transducers. This will improve the specificity and selectivity of ultrasound. The algae are treated established with ultrasonic sound waves at precise frequencies that directly affect the cellular structure of the algae. The amount of algae in water is reduced and controlled manner efficient, profitable, and more growth is inhibited. green layers disappear, biofilm formation is prevented, and the appearance and clarity of the water is visibly improved. Your continued use of this device prevents water from recontamination.

This type of algae ultrasound systems can be used in all situations water is stored, from large industrial water applications to small private swimming pools or ornamental ponds. These systems range from high-capacity drives to small the, allowing a 'tailor-made solution' for all purposes.

The amount of time needed to see improvements depends on parameters, such as the type of algae present in the population of algae, water temperature, the amount of light, the amount of nutrients (especially phosphates and nitrates) the size and depth of the water body, TSS levels, total dissolved solids (TDS) levels, turbidity, retention time, etc.

Wastewater application

Often, the treated wastewater for reuse as drinking water or for other purposes. As high levels of nutrition are available in these waters, the algae can grow rapidly, and other microorganisms such as bacteria. The algae can compete for nutrients to the bacteria responsible for the reduction of sludge and also can block the whole system. LG Sonic ultrasound uses the newest techniques to eliminate the threat of algae treatment plants for sewage and reclaimed water reservoirs.

A research project Sound executed by LG (the producers of the LG Sonic systems) to study the effect of ultrasound in wastewater treatment project was the Chem-Free. This was a European project, which focused on the development of a chemical-free water treatment system for treatment (secondary treated) municipal wastewater. Chem-Free is a Cooperative Research Project (CRAFT) project, funded within the European Union (EU) 6th Framework Programme horizontal research activities.

In short, some of the results obtained in applications for wastewater using LG Sonic systems are:

  • Strong reduction in the concentration algae (± 90% reduction of chlorophyll-a)
  • Reduced biofilm formation
  • Reduction of TSS, turbidity, BOD, COD levels, etc.
  • Reduced levels of free bacteria (E. coli, etc Enteroccoci)
  • ultrasonic vibrations to make it more efficient for bacteria in the mud to get the nutrients and accelerates the use of nutrients, accelerating the degradation of organic waste and consumption of nitrates and phosphates.
  • side effect, the improved performance of the ozone layer UV / in removing microorganisms

LG Sonic systems can be applied, for example in DAF (dissolved air flotation) tanks, flocculation tanks, clarifiers, settling ponds, etc …

Lakes, rivers and other natural reservoirs

Lakes vary physically in terms of light levels, temperature and currents of water.

Light intensity on the surface of the lake varies seasonally and with cloud cover and decreases with the depth of the water column. The most deep in the water column that can penetrate the light, photosynthesis can occur deeper. Photosynthetic organisms are the algae in the water that can cause serious problems in recreational lakes. Blooming blue-green algae can cause illness in humans and animals, so that recreational use of a lake nearly impossible.

The LG Sonic can be used to effectively control the growth of algae in lakes, harbors and rivers without adding chemicals. LG Sound has years of experience in the use of LG Sonic in lakes, rivers, etc and have worked with the LG Sonic in many different countries. In the Netherlands, the LG Sonic has been used for the control of flowering blue-green algae in a port of Tholen. In Japan, the units have been used to control the growth of algae in a large lake and many more applications show the effects beneficial use of the LG Sonic in natural waters, some of these effects with the LG Sonic are:

  • Reduce and control algae in ponds and lakes an efficient and cost effective
  • Reduction of TSS, turbidity, BOD, COD levels, etc.
  • Also prevents algae growth
  • Reduces toxins by enhancing the rate of degradation of toxins produced by blue-green algae (cyanobacteria), but mostly for control of blue-green algae itself.
  • Will not harm aquatic plants, fish, frogs, zooplankton, shrimps and other life in the water.
  • Do not threaten the ecosystem
  • 100% organic
  • Low maintenance of devices
  • Low power consumption

Aquaculture application

On the basis of results from two projects, Chem-Free (see above) and a research project in collaboration with the USDA-ARS (U.S. Department of Agriculture Agricultural Research Service) and the Catfish Genetics Unit Research (USA) using the LG Sonic ultrasound systems, LG Sound has developed and implemented a new system of LG Sonic, Sonic LG aquaculture, specially designed for use in aquaculture.

Some of the results obtained in aquaculture with the LG Sonic aquaculture models are:

  • Strong reduction the concentration of algae (about 90% reduction)
  • Reduced biofilm formation
  • Reduction of the fouling and the growth of other fish cages (interior and open sea)
  • Reduction?-Cyclocitrol, 2-Methylisoborneol concentration
  • Reduction of microcystin (cyanobacterial toxins)
  • Reduced levels of free bacteria (E. coli, Enteroccoci, total coliforms, etc)
  • Ammonium and nitrite reduction
  • A little heavier fish yield

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