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 equipment for pollution wanted

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James Page



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Join date : 2010-01-21

PostSubject: Re: equipment for pollution wanted   Tue Sep 06, 2011 7:05 am

a mahoosive thanks to ed for covering the cost of the hose and jubilee clips
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David Harvey

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PostSubject: Re: equipment for pollution wanted   Wed Sep 07, 2011 11:43 pm

Did take the opportunity to try out some of the kit today, getting there folks. Needs some modification but certainly learnt a bit










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Ed Randall

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PostSubject: Re: equipment for pollution wanted   Thu Sep 08, 2011 12:46 pm

Looks like you guys were having great fun, and there was I stuck in a meeting at work & missed it all Crying or Very sad

Willie you should be careful holding the pipes down like that, you're getting sprayed by the yucky stuff Mad

Did you try with the yellow pipes attached on the ends at all? If you partially fill them with grit from the river bed (so no need to carry any weight with you) that should hold the end down and make lots of smaller bubbles which is more efficient.

The thing is if you can create lots of small bubbles rather than big ones, the surface area in contact with the water will be much greater, therefore the oxygen can go in to the water faster and more efficently. eg. (I did some maths on paper here) 1 bubble size 80cm diameter (the same as our pipe) has a surface area of 201 sq.cm. But if you can break that same volume of air down in to 1000 small bubbles, each one would have a diameter of 8mm, the overall volume is the same but the total surface area is 2010 sq.cm - 10 times more! Greater surface area => greater speed of reaction, in this case the reaction being oxygen dissolving in to the water.

Great to see it all coming together in action! Ed.
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William Pettigrew

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PostSubject: Re: equipment for pollution wanted   Thu Sep 08, 2011 3:10 pm

thanks ed [brainiac].i never new about the yellow attachments.we were trying to put banksticks into the riverbad and tie rope around the end of the hose to hold it under,but the sticks wouldnt go in [ground too hard] that wouldnt have worked anyway as you would be strangling the hose affraid .

i think i get your drift with the math, thanks willie.

ive just put my shades on = ive been blinded by science lol!
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Steve Holmes



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PostSubject: Re: equipment for pollution wanted   Thu Sep 08, 2011 3:12 pm

Ed I have to say, superb work on all aspects of this.

Combined with our volunteers, if we could multiply that kit thru donations etc and end up with serious numbers of blowers, we'd be able to make a big difference.

For anyone who's not seen a tidal fish kill, the fish come right into the margins, literally in inches of water...so we would be able to aerate the water close to them.
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David Harvey

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PostSubject: Re: equipment for pollution wanted   Thu Sep 08, 2011 5:18 pm

Nice one chaps. Think the same goes if we had an incident in a smaller river, just imagine the amount of oxygen we could get back in.
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James Page



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PostSubject: Re: equipment for pollution wanted   Thu Sep 08, 2011 6:43 pm

ed you're fantabulous m8, not only getting the kit running, but covering the cost as well, and now with the science and maths, you'll do for me my son

update on the blowers folks; I've attached a piece of plastic pipe to the blue hose and wrapped a sheet of roofing lead around it, then lobbed it in the river, and it worked a treat, loads of disturbance and it remained on the bottom
following eds post I'm gonna replace the plastic pipe with a piece of perforated[yellow] pipe

maybe we should meet up at ham car park and give it a proper road test
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James Page



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PostSubject: Re: equipment for pollution wanted   Thu Sep 15, 2011 7:14 am

if anyone wants to meet at ham car park for an hour this weekend, we could fine tune/demonstrate our leaf blowers and get some better pics posted up

excellent news chaps, thanks to all our blue peter efforts, we've been donated the funds to get some more kit

was thinking along the lines of getting our own petrol driven pump, it can operate as a fountain, oxygenating the surface, and should we need to empty a pond or ditch, it'll be waiting

opinions as always folks, but figured in an ideal world we'd get the swiss armyknife of oxygenating kit
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Ed Randall

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PostSubject: Re: equipment for pollution wanted   Thu Sep 15, 2011 8:23 am

Should be able to get down there, as to when, I'll be in touch.
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James Page



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PostSubject: Re: equipment for pollution wanted   Sun Sep 18, 2011 3:58 am

myself, ed and mathew, richard and his son ryan road tested 3 leaf blowers yesterday afternoon, they worked a treat in the shallow water, richard will post up pics later

does anyone have any experience of compressors, we've been given a donation that will be used to get a better stream of oxygen in the water, was thinking if we could get a cheap compressor, maybe it could run a kango, which we could then use for our weir notching activities

opinions/info please folks
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Richard King

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PostSubject: equipment for pollution wanted   Sun Sep 18, 2011 9:13 pm

here is a link to the video of our leaf blower experement.
http://www.youtube.com/watch?v=M7UR1NmAmhs
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Steve Holmes



Posts : 2435
Join date : 2010-01-28

PostSubject: Re: equipment for pollution wanted   Sun Sep 18, 2011 10:29 pm

Richard King wrote:
here is a link to the video of our leaf blower experement.
http://www.youtube.com/watch?v=M7UR1NmAmhs

lol!

That should do it!
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James Page



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PostSubject: Re: equipment for pollution wanted   Mon Sep 19, 2011 7:46 am

nice one to everyone for all their help
as everyone can see, we've now got the kit fine tuned, and its stored in our shed at teddington lock, awaiting the elzebub to kill our river again
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James Page



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Join date : 2010-01-21

PostSubject: Re: equipment for pollution wanted   Sun Sep 25, 2011 5:00 am

thanks to donations, yesterday we bought a petrol driven water pump
it has a 3 inch bore, and pumps 800 litres of water a minute to a height of 90 feet
thats some kind of fountain folks
will get pic up later
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Paul Snell



Male Posts : 434
Join date : 2011-06-20
Location : Egham

PostSubject: Re: equipment for pollution wanted   Sun Sep 25, 2011 12:38 pm

James Page wrote:
thanks to donations, yesterday we bought a petrol driven water pump
will get pic up later

Voila:



PS - to give it some scale that's a Great Dane in the photo ;-)
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Ed Randall

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PostSubject: Re: equipment for pollution wanted   Sun Sep 25, 2011 5:19 pm

Nice one, can't wait to see that baby run Very Happy
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Paul Snell



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PostSubject: Re: equipment for pollution wanted   Sun Sep 25, 2011 7:47 pm

EdRandall wrote:
Nice one, can't wait to see that baby run Very Happy

19:30 @ Wimbledon a week Wednesday, trap 4, I believe.
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James Page



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PostSubject: Re: equipment for pollution wanted   Mon Sep 26, 2011 7:37 am

so kit wise; we have a leaf blower and pump in our storage shed
we have another leaf blower available immediately it is needed
two more leaf blowers available within a couple of hours
and an even larger pump available immediately

we are trying to organise a compressor that will double up as an oxygenator, and run a kango for our weir notching activities

many many thanks to all those that have assisted
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Ed Randall

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Join date : 2010-11-19
Age : 51
Location : Twickenham

PostSubject: Re: equipment for pollution wanted   Wed Nov 02, 2011 2:39 pm

Having found the address of the manufacturer on the packaging for the aerators that Thames Water are using on the Crane ( https://picasaweb.google.com/105140280237210420217/RiverCranePollution#5670318909871755714 ), I looked them up, here is the catalogue.

http://www.linn.eu/cms/index.php?option=com_content&task=view&id=8&Itemid=9&lang=english

No prices unfortunately, but interesting to see how the commercial products do it and probably quite a lot more effective than the leaf-blower devices that we've bodged together (although it was good fun). These are electric and will run off a small generator, available in various sizes.
We don't have a generator but do have a petrol-powered pump now, I was wondering if something like one of these aerators is available with a hose-pipe connection instead of the internal electric motor.

I wonder if we can persuade Thames Water to buy some for us.
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