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 Settlement Chamber setup questions

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Neli



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PostSubject: Re: Settlement Chamber setup questions   Tue Mar 13, 2012 9:58 am

Q,
It s a simple thing but has some logic and principles behind for it to work well.
I hope I explained what u wanted to know....
I am also not too good at explaining...that is why I am asking...
There are lots of formulas also to calculate the sedimentation rate of different particles, and deduce from it the size of the chamber needed....but I think the rule of thumb applies better here.
Kiss mama GR and GR from me.
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quinten



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PostSubject: Re: Settlement Chamber setup questions   Tue Mar 13, 2012 10:23 am

Thank you Neli ,

How do you post a picture here? Wink Wink
I have draw a sc camber and just want to know if i am correct?

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Neli



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PostSubject: Re: Settlement Chamber setup questions   Tue Mar 13, 2012 10:36 am

U need to post it on Photobucket or something like that, and then just put the link (paste) where U want it to appear..the bottom most link under the picture...(forgot what it was called) IMG link... Got it...
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Neli



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PostSubject: Re: Settlement Chamber setup questions   Tue Mar 13, 2012 11:04 am

The latest for SC is to use pipes inside like a tube settler...U cut pipes and put them over each other like a box at 60 degree angle...But in SA I saw at the show...something used for cooling towers....they use it as media too...it is like a block....that is actually the correct thing to use...Nev showuld know where to get it from, since his friend Bernard is using it at the farm....but I took a picture of it when I was there so I will email it for U...It is very good, easy to clean, and it was around R700 for a big block.
Just google tube settler...A friend of mine is using it now...and he is a pro...on sewerage...and things like tube settlers...He made his from pipes...just chopped them and put them at an angle on top of each other...I will send U the link if U want.
What happens inside is that the particles conglomerate and drop by gravity into an area where they are easy to flash...very easy to maintain.
But now that I connected my sand filter to a compressor I like it a lot.
But the latest again is to build your pond stream flow desigh, put the BD like boxes at the end of the pond ( deepest part) and have the waste sedimented there and removed by a timer or air lift every one hour...
very good system...
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wayneb



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PostSubject: Re: Settlement Chamber setup questions   Tue Mar 13, 2012 8:25 pm

Hi Quinten

The basic idea of a settlement chamber is that it is a "BIG" chamber where the water slows down and all the big heavy solids in the water settles \ filters out in this chamber. Basically gravity makes it sink to the bottom cause the water moves so slow. Then one can easily flush the chamber to get rif of the big solids.

There is also the opposite of a "Settlement chamber" - that is a vortex. It is more useful than a settlement chamber when space is an issue. Water gets sped up in it to settle the solids out.

Have a look at his site. http://koicymru.co.uk/construct.htm

Wayne
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Neli



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PostSubject: Re: Settlement Chamber setup questions   Tue Mar 13, 2012 10:54 pm

Hi Wayne,
Thanks....I always considered a vortex in principle a SC since:
It settles particles...
and it is used for the same purpose...
But yes...U make sense...The way they do it is different: in one the water is fast and in the other is slow...
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PostSubject: Re: Settlement Chamber setup questions   Wed Mar 14, 2012 7:52 am

Very often, a SC is too small and creates too much turbulence due to the water rushing into the chamber and the solids can not settle. A mistake I have seen often is settlement chambers without a flush valve.

The greatest advantage of the SC is that it catches the solids before it reaches the pump. Without the SC, the solids will reach the impellor of the pump, converting a large particle into many small ones, which will then pass your filters and find it's way back to the pond. (Pumping directly from your pond)

The other great advantage and reason why I will never go for any system without a SC, is that you can use submersible pump with a lot of saving in electricity. A submersible pump just don't work without a SC and therefore is a pre-requisite to me.

I have drawn a diagram of how I think it should be done. Sucking pipe maybe a bit lower. You can always add a piece of pipe upwards to get the best results, but you can not lower it afterwards. Any comments on the drawing welcome.


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Neli



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PostSubject: Re: Settlement Chamber setup questions   Wed Mar 14, 2012 2:22 pm

Admin,
What do U think of the estimates I have given regarding the size of SC on the previous page?
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PostSubject: Re: Settlement Chamber setup questions   Wed Mar 14, 2012 2:51 pm

I agree with you. The rule is more or less 10% of the flow

I would say:

10 000 liter pond should ideally have a 10 000 liter/h pump with a 1000 settlement chamber

20 000 liter pond should ideally have a 18 000 liter/h pump with a 18000 settlement chamber

30 000 liter pond should ideally have a 25 000 liter/h pump with a 25000 settlement chamber.

Alteratively a smaller SC but then you bypass some of your flow to prevent solids running right through you SC and chambers back into your pond.

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Neli



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PostSubject: Re: Settlement Chamber setup questions   Wed Mar 14, 2012 3:03 pm

Thanks! I also feel SC is a must! I was forced to use the SF since I have no BD and used a flexible perforated pipe on the bottom...but if I make a new pond a SC for me will be a must...
The flow problems I see is:
U have to have enough flow for the BD pipes not to clog, or have a provision to flush them...
I did not understand why do U want to put a submersible pump in the SC...is it not better to feed by gravity to the rest of the filter chambers, and put the pump in the last chamber...to pump to returns?
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PostSubject: Re: Settlement Chamber setup questions   Wed Mar 14, 2012 4:04 pm

Yes Neli, you will notice from the drawing that the line runs from SC to filters (or pump)

Your submersible should ideally be in your last chamber, sucking water from the other bio chambers which sucks again from the SC via gravitation.

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Neli



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PostSubject: Re: Settlement Chamber setup questions   Wed Mar 14, 2012 6:59 pm

U said submersible pump uses lower wattage...or consumption...Which is this pump?
Is PC 18000 a submersible pump?
Do submersible pumps last as long as external pump...
I bought one and it electrocuted my koi, and my worker who was in the pond...he was jumping 2m in the air like a yoyo...so I am scared of them now.
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PostSubject: Re: Settlement Chamber setup questions   Fri Mar 16, 2012 7:01 am

Neli wrote:
U said submersible pump uses lower wattage...or consumption...Which is this pump?
Is PC 18000 a submersible pump?
Do submersible pumps last as long as external pump...
I bought one and it electrocuted my koi, and my worker who was in the pond...he was jumping 2m in the air like a yoyo...so I am scared of them now.

The PC 18 000 is a submersible pump and delivers 18 000l/h. The specifications says @ 90 watts but it uses more than claimed as most submersibles do.

The PC 36 000 delivers 36 000 l/h @ a quoted 250 watts.

I have been using submersible pumps for many years and never experienced leakage of electricity nor any electric shocks. I suppose it depends on who the manufacturer is. Power should also trip immediately when there is a leakage.

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Neli



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PostSubject: Re: Settlement Chamber setup questions   Fri Mar 16, 2012 10:02 am

Thanks Admin!
Do U need to put some additional gadget or the pump has protection in case of leakage?
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PostSubject: Re: Settlement Chamber setup questions   Fri Mar 16, 2012 10:45 am

Some pumps have a GFCI (Ground fault current interrupter). You can also buy a GFCI separate and some pump instructions will require one although nobody adhere to that requirement including me. It will trip as soon as there are any ground fault or earth leakage.

However, your normal modern earth leakage circuit breakers (the green breaker on your board) that you should have on your normal supply anyway, should also do that and trip within milli seconds after a leakage.

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Neli



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PostSubject: Re: Settlement Chamber setup questions   Fri Mar 16, 2012 3:30 pm

He he he! I dont have the green braker in my house...I did most of the electrics my self with the gardener...
and one guy who new a bit...I know a bit the theory...but I am lazy to connect wires...so I connected them remote control...
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