Ultrasonic: how futuristic wave system is helping to cut algae at reservoir

Bournemouth Echo: GREEN SOLUTION: Tim Latchham, right, with Tony Primmer, SBW’s production manager GREEN SOLUTION: Tim Latchham, right, with Tony Primmer, SBW’s production manager

FUTURISTIC technology is being used to kill off algae at an East Dorset reservoir.

Sembcorp Bournemouth Water (SBW) has installed an ultrasonic algae control system at Longham Lakes.

The system, supplied by Dutch company LG Sound, is used widely in mainland Europe but is the first to be installed by an English water company.

It uses underwater sound waves on scientifically proven frequencies to eliminate common algae, including toxic blue-green algae.

The ultrasonic waves 'pop' the air bubbles in the algae causing it to lose buoyancy and sink to the bottom of the lake and die.

The environmentally-friendly system is run on solar energy, requires no chemicals and has no harmful effects for fish, water plants and insects. Tim Latcham, head of water supply, said the system was installed in February and had been fully operational since March.

“It’s early days and we haven’t hit the peak time for algae but following the first significant outbreak, we’ve already seen a dramatic reduction which is very encouraging,” he said.

Comments (5)

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11:27am Tue 27 May 14

crispy_pants says...

Poole council. I hope you're reading this article. This could sort out your Poole Park lake problem.
Poole council. I hope you're reading this article. This could sort out your Poole Park lake problem. crispy_pants
  • Score: 3

12:19pm Tue 27 May 14

Arjay says...

Looks to be a very elegant solution to the problem -- no chemicals involved, so no 'collateral' environmental damage. Solar powered as well, so no carbon footprint either... A win-win situation, by the sound of it .......or I should say, by the 'ultrasound' of it....
Looks to be a very elegant solution to the problem -- no chemicals involved, so no 'collateral' environmental damage. Solar powered as well, so no carbon footprint either... A win-win situation, by the sound of it .......or I should say, by the 'ultrasound' of it.... Arjay
  • Score: 3

12:31pm Tue 27 May 14

anotherfatslob says...

Anyone asked the fishes if they like it?
Anyone asked the fishes if they like it? anotherfatslob
  • Score: 0

6:39pm Tue 27 May 14

boardsandphotos says...

anotherfatslob wrote:
Anyone asked the fishes if they like it?
Taken from a website about Ultrasonic:

Is Ultrasound Safe for me to use around my Fish?

Yes, ultrasound has been proven time and time again to be extremely safe for fish and other aquatic wildlife. You might note that our ultrasonic units are frequency tuned to damage just the cellular wall of the algae. Therefore, this range of frequency is ultimately not harmful to other wildlife.

We have of course personally tested the devices in a variety of situations such as Koi ponds and other types of fish ponds and not only noted zero ill affects, but the fish would swim up to the unit, look it over and then eventually swim away. There has been no indication whatsoever of any kind of stress or stress related reactions caused by our applications...other than a bit of curiosity by the fish themselves!
[quote][p][bold]anotherfatslob[/bold] wrote: Anyone asked the fishes if they like it?[/p][/quote]Taken from a website about Ultrasonic: Is Ultrasound Safe for me to use around my Fish? Yes, ultrasound has been proven time and time again to be extremely safe for fish and other aquatic wildlife. You might note that our ultrasonic units are frequency tuned to damage just the cellular wall of the algae. Therefore, this range of frequency is ultimately not harmful to other wildlife. We have of course personally tested the devices in a variety of situations such as Koi ponds and other types of fish ponds and not only noted zero ill affects, but the fish would swim up to the unit, look it over and then eventually swim away. There has been no indication whatsoever of any kind of stress or stress related reactions caused by our applications...other than a bit of curiosity by the fish themselves! boardsandphotos
  • Score: 0

8:25pm Tue 27 May 14

anotherfatslob says...

Oh good,didn't mean to carp on.
Oh good,didn't mean to carp on. anotherfatslob
  • Score: 0

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