Venturi dredge setup questions - Pond Boss Forum

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blaroche

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Setup thoughts

Questions

Pond details

: Looking to build a Gold/Muck dredge using Venturi effect. I think I have the pump and nozzle set, looking for guidance on hosing sizes. Or at least confirm my thoughts.I&#;ve been reading through the forum, trying to piece together the information I need, with a lot coming from Driver Cody&#;s posts.This trash pump seems to have enough power and is affordable. Craistlist and FB marketplace didn&#;t seem to offer much better options.Going to spend a little extra for a nozzle, I suspect I could make one cheaper, but I like these:or:So, I&#;ll have a 3&#; trash pump that I&#;ll put on my floating dock so it can move with me as needed. I&#;ll probably only need a few feet of 3&#; intake hose. I&#;ll have a short 3&#; discharge hose from the pump that I&#;ll have to reduce to 1.5&#; or 2&#; to the suction nozzle. And then however long 3&#; hose I need to pump out over the pond bank. From the nozzle, I&#;ll probably have a 3 to 6 foot 3&#; pvc pipe to a T joint or something with a 1 to 2 foot pvc capped with about ¾ inch holes drilled for a sort of vacuum end.Does this setup sound feasible? Am I correct in reducing 3&#; to 1.5 or 2&#; to the nozzle. I&#;m guessing it won&#;t negatively impact the pump? Any difference between 1.5&#; vs 2&#; at the nozzle?I have a little under a ½ acre pond. I&#;ve been aerating (two bottom diffused) the past 5 years since we bought the property and using bacteria, it has cleaned up a lot. We live in an area with a lot of flat rock, you can find it in all the nearby creeks, and in our ditch by the road. I think the pond has a flat rock bottom. It is very, very solid probing with a measure stick, and is pretty consistently 8 feet deep all way around the pond. It has about a foot or so of loose muck/silt that I think will suck up pretty nicely. I plan to do most of the work in spring/fall when we have excess water and just pump over the bank towards the woods. I&#;m planning for a several year project. Perhaps later I&#;ll look at some sort of de-watering. The pond is roughly a triangle shape, so I&#;ll start at the swimming area point and work my way out over a handful of years.Kids love the pond, it is right near the house. Would love to clean it up more and get rid of the leeches.

Last edited by blaroche;

10:35 AM

How to choose the right dredging pump?

The success of your dredging job depends on your selection of high-quality pumps. Here are a few factors you need to consider while selecting a dredging pump:

Dredging material type: The pump&#;s efficiency can be affected by factors like the material&#;s density, viscosity, and particle size. Dredging sand, for instance, requires a pump that can withstand abrasive particles. 

Size and depth of the water body: Another deciding factor on a dredging pump is the size and depth of the water body where the pump is intended to work in. How much material needs to be moved determines how big a pump is needed. And, how deep the water is determines how long a suction hose must be.

Water pressure and flow rate: Flow rate is the quantity of water and sediment the pump can move in a given time. Pressure is the force the pump can generate. A pump with a high flow rate is required to rapidly transport a lot of material. 

Here&#;s a guide on

selecting a dredge pump

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