Go Back   Steve's Digicams Forums > Post Your Photos > Biweekly Shoot Out

Reply
 
Thread Tools Search this Thread
Old Jun 4, 2009, 4:47 PM   #1
Senior Member
 
Trojansoc's Avatar
 
Join Date: Jan 2007
Location: Hot Springs, AR
Posts: 3,723
Default Wheels, Not Tires--Water

I was at the local fish hatchery this morning when I saw this aerator in action on one of the ponds.



Looking at another of the units, on a different pond, it's really a series of six or seven fairly narrow-bladed water wheels on the same shaft.



Paul
Trojansoc is offline   Reply With Quote
Sponsored Links
Old Jun 4, 2009, 7:17 PM   #2
Senior Member
 
Walter C's Avatar
 
Join Date: Nov 2004
Location: Huntington Beach, CA USA
Posts: 7,739
Default

Good eye! Interesting contraption.
Walter C is offline   Reply With Quote
Old Jun 4, 2009, 8:32 PM   #3
Member
 
Wil Davis's Avatar
 
Join Date: Nov 2008
Posts: 47
Default

Interesting device; I'd love to see the first picture taken using a slow shutter speed, say 1/5th or 1/10th of a second...

- Wil
Wil Davis is offline   Reply With Quote
Old Jun 5, 2009, 9:29 AM   #4
Moderator
 
calr's Avatar
 
Join Date: Sep 2003
Location: Beaverton, OR
Posts: 8,466
Default

Great capture. For a hatchery, that water looks awfully muddy. I've never seen one of these contraptions as Walter called it. I would think it would be much more economical to use fountain sprayers that spray the water up into the air for aeration.

Cal
calr is offline   Reply With Quote
Old Jun 5, 2009, 10:09 AM   #5
Senior Member
 
Trojansoc's Avatar
 
Join Date: Jan 2007
Location: Hot Springs, AR
Posts: 3,723
Default

Quote:
Originally Posted by calr View Post
Great capture. For a hatchery, that water looks awfully muddy. I've never seen one of these contraptions as Walter called it. I would think it would be much more economical to use fountain sprayers that spray the water up into the air for aeration.

Cal
Cal, I'm certainly no expert on fish hatchery maintenance, but I'm going to venture a couple of guesses. The barges on which these "contraptions" are mounted are secured in very shallow water (in fact, I doubt any of the ponds ever reach a depth of more than 5-6 feet), thus the mud is churned up from the bottom. The rest of the pond is not that muddy, although since catfish are the principal fish raised here, mud is not a serious problem.

As far as the sprayers are concerned, my suspicion is that it's a matter of pumping station volume. There are some 30 fairly large ponds located adjacent to a lake. Water is moved in and out of the lake when needed, but significantly, at lake level without having to pump it up vertically. To raise the volume of water needed for aeration, I would think, would require substantially more pumping capacity. These are just guesses, but I'm out there fairly often, and if I run into one of the biologists, I'll ask.

Wil, I will try to get a long exposure of one of these things in action in the next few days. I didn't try that on this trip because I didn't want to lug a heavy tripod out to one that was working. I'll try to catch one close to the road since I'm lazy, lol.

Paul
Trojansoc is offline   Reply With Quote
Old Jun 5, 2009, 12:58 PM   #6
Senior Member
 
Mugmar's Avatar
 
Join Date: Jul 2005
Posts: 3,152
Default

Nice shots Paul. Thanks for the added info.

Mugmar
Mugmar is offline   Reply With Quote
Old Jun 7, 2009, 12:24 AM   #7
Moderator
 
selvin's Avatar
 
Join Date: Aug 2002
Posts: 7,204
Default

Paul,
The photo looks like the paddles are really mad at the water and is beating the stuffing out of it.
As noted it is an ingenious contraption. Is it noisy, all that potential noise can't be good for the fish vs a sprinkler system.
Aloha
selvin is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 2:05 AM.