What is Hydro Vacuum Excavation and How Does it Work?

hydro excavation

How do you know if you are in need of Hydro Vacuum Excavation? What is it and how does it actually work? Let’s take a look now in a bit more detail.

Hydro Excavation is a technique which is used to remove soil using a combination of water and suction. The soil is treated with pressurised water to turn it into mud, which is then sucked into a debris tank to clear the area. 

Hydro excavation is often used to clear areas of land in a non-destructive way. For example, it can be used for trying to locate underground utilities without the risk of causing damage to them.

Safe and Efficient

Hydro excavation is popular in countries where the weather is often cold since it makes it easier to move dirt that may be frozen under normal circumstances. 

It has started to become more commonplace in other parts of the world, including Australia because it is such an efficient and non-destructive technique. It is a cost-effective, environmentally friendly way of digging.

How Hydro Excavation Works

Hydro excavation uses high-pressure water and vacuum suction. It breaks up the soil and turns it into a slurry, and the slurry is sucked up into a tank. The slurry can then be moved off-site if necessary.  

In addition to being non-destructive, it is useful because the collection equipment can be positioned slightly away from the worksite. 

This means that there is less heavy equipment getting in the way and causing traffic disruption. Since you can dig out exactly the area required without having to touch elsewhere, backfill burdens are greatly reduced as well.

The technique can be used for:

  • Remote digging
  • Cold weather excavation
  • Piling holes
  • Locating utilities
  • Slot trenching
  • Potholing
  • Removing debris

Hydro vacuum excavation is a precise and non-destructive way of digging through mud. 

This allows for more precise excavation, with less backfill required at a later date, lower labour requirements, and reduced environmental impact. 

Hydro vacuum excavation can be done on a range of scales, from very precise, small areas around sensitive equipment, to clearing larger cuts of land near a highway through remote excavation, reducing disruption while still working quickly. 

It allows for the excavation of a targetted area while minimising any damage to the surrounding area. It also reduces the amount of equipment and manpower needed.

It is popular as a method of debris removal because it allows for the precise removal of sludge and spills. It can be used for catch basin cleaning, and for cleaning debris in relatively cramped areas. 

Water can be injected into the affected area through a small handheld wand, and the slurry can be vacuumed up using a larger debris hose. The equipment and manpower requirements are minimal.

Hygiene and Toxic Waste

While in many cases all that is being moved is mud, there are some instances where vacuum excavation is used to handle more dangerous or potentially toxic substances. 

The vacuum trucks are sealed and are strong and robust which helps to prevent accidental spillages. 

Trucks are equipped with spill kits to ensure that if spillage does happen it can be handled in a prompt and efficient manner, reducing the environmental impact. 

Copious amounts of water are used when collecting the sludge or debris, and this helps to reduce the impact of any run-off that does happen.

If you have a project that requires hydro vacuum excavation, please call us today on 0419 577 441 or contact us through our website.