Septic Tanks

  • Manufactured using high-density polyethylene (HDPE)
  • Extremely durable and lightweight
  • Easy to install
  • Best value for your money

Why choose a Tricel Vento Septic Tank

Tricel Vento septic tanks are manufactured using the latest blow moulding technology.

Produced from high-density polyethylene (HDPE), this market-leading off main septic tank is extremely durable yet lightweight.

The low-profile design of the tank makes it easier to install as a smaller excavation is required for the tank, saving you both time and money.

A Tricel Vento is suitable for single dwellings and small communities. Sizes ranging from 6 to 50 population.

Tricel Vento septic tank
Free Site Visit & Commissioning

Free Site Visits in Northern Ireland

Offering you the best value for money wastewater treatment systems in Northern Ireland

Fully Certified Engineers

Fully Certified Engineers

Depawater's engineers are accredited by British Water, all our products are CE certified

Reliable & Efficient

Reliable & Efficient

We deliver on reliability and efficiency in both service and products

Distribution Boxes & Risers

Distribution Boxes & Risers are available for Tricel Vento septic tanks, should you require them for deeper excavations. They are quick and easy to install at any time.

Distribution Box


Lightweight and manoeuvrable, Tricel Vento Septic Tanks can be installed using a small excavator, blending into the landscape nicely without any fuss and ready for use in no time at all.


All septic tanks must be desludged annually.

Contact NI Water for this service on 03457 440 088Please allow up to 12 days for this service.

Following the desulging, call us for service and maintenance.

What size Septic Tank do I need?

Our Tricel Vento brochure shows the capacity and dimensions of the various tank models.  Bespoke septic tank design is available in situations where larger capacity commercial septic tanks are required. Septic tanks should be sized correctly according to usage.

How do Tricel Vento Septic Tanks work?

Step 1: The wastewater flows by gravity into the first chamber. Here, the solids and heavier material settle at the bottom of the tank. A small amount of anaerobic breakdown occurs.

Step 2: The liquid and lighter material flow over a baffle into the second chamber. A layer of scum forms at the top of the liquid, this helps to trap any odour from escaping. A specially designed dip outlet pipe ensures that only the liquid element flows into the percolation area and prevents the scum from passing through which may result in blocked ducts.

Step 3: The final treatment stage of the wastewater occurs as it enters the specially designed percolation area.

  • Click on the numbers to see the annotations.
  • To view in Virtual Reality (VR), click the square at the top right-hand corner and simply scan the QR code with your phone.
  • To check the dimensions, click on the spanner icon.
  • To download an image of the Vento, click on the camera icon (top right-hand corner).

Finally, you can also visit THE LAB by Tricel to view the Vento in a Virtual Showroom, interact with 3D models, view images and product videos.

The Lab by Tricel

Not sure if this product is for you?

We can help you. The only thing you need to do is book a site visit, and we will be able to analyse your ground and guide you towards which wastewater treatment solution is best for your site and your needs.


Work with us on your project

If you are building or renovating a house and require a sewage treatment system installed or a septic tank upgraded, contact us today and speak to our experts to learn which product is best for your needs. 


Work with Depawater