Hi all, this might be novice stuff, but I am a novice.
The reading I have done explains how to work out the forces and moments on a static cantilever beam, but not what is required at the support to provide these reaction forces and moments..
I need to make sure a cantilever Unistrut beam will...
That's what I think Latexman - it aint broke - it used to have issues but they have been resolved but he still thought 200kpa was too high for headlosses. However I have a better understanding now with the wetting jet being the pressure user so I can explain it to him.
You might be on the...
Problem is my supervisor wants to replace 30m of PVC pipework as he thinks the line must be blocked as we are running such a high pressure.
But I have opened the pipework up at a couple of areas and the inside wall was clean. I also believe a gritty (sand like) carbon slurry is unlikely to foul...
I think I have found the issue here. The venturi can work at a lower pressure than 200Kpa, the reason I need 200kpa+ is because of the wetting jet on the cone. This jet needs a 200kpa+ pressure to put out a jet with enough velocity to get around the cone and wet it entirely. If the wetting jet...
Thanks for feedback guys, yea this is a working system. There is a minimum flow rate/velocity for the venture to work. If I close the supply valve off too much to the venturi the cone will simply fill with water and carbon. So I try to find the minimal flow for the system to work reliably.
Hi guys, sorry for late reply. Hope everyone had a good Xmas.
I have attached a pdf diagram of the carbon system. What I basically wish to do is explain why the pressure at the 200kpa gauge is 200kpa instead of zero.
My supervisor is stating the pressure at the 200kpa gauge should be near on...
Yeah the venturi is working fine now with good flow once I found the PRV was blocked and had it replaced. But my boss still thinks the pipework is fouled causing a restriction. he says the pressure on the gauge shouldn't be zero as there is headlosses in the pipework but it shouldn't be 200kPa...
Hi - the flow rate is around 10m3/hr. The bends is x12 and height is 6m vertical after the venturi, at sea level.
The water at pressure is supplied to the venture which takes in the carbon powder and coveys it into the raw water as a slurry. This is for odour, colour, organics removal of the raw...
Hi guys, I have a question about water pressure through a 1.5" PVC pipeline.
The supply pressure is around 700kPa (from a reservior on a hill). The water line runs about 10m to a pressure regulator which is currently set to 200kPa. This water is then used to power a venturi to suck up powdered...
Yeah good idea bimr, as forgetfullness is something I need to take into account. We don't currently turn off the poly pump as operators don't seem to be trusted to turn it on again. The polymer is batched from a hopper into a tank, 25kg bag to 10 000L water to achieve 0.25% solution. That...
Woops that pdf isn't much good. Here's anotherhttp://files.engineering.com/getfile.aspx?folder=de7f6a3e-e5d0-4e1e-a8c8-d283caf0800c&file=Sludge_Dewatering_2.pdf
Hopefully this helps. We don't carry water for our poly. As it's consistency as it's batched is OK. But it is rigged so carry water can be used this is dosed into the poly line just before it meets the sludge feed...
Hi guys, this is my first post in this forum.
I am an operator at a Water Treatment plant and have been offered my first project so want to do a good job.
Poly electrolyte is pumped into a centrifuge to thicken the sludge inside and help dewatering. The poly is plumbed into the sludge input...
