Tricel Vento

Septic Tanks

Why choose a Tricel Vento Septic Tanks

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.

A Trusted Name In the
Wastewater Treatment Industry

Fully Certified Engineers

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

Reliable & Efficient

We deliver on reliability and efficiency in both service and products

25 + Years Experience

Over fifteen years of experience providing an industry-leading professional service

Free Site Visits in Northern Ireland

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

Our Trusted Partners

Tricel Vento Key Features

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.

we’re here to Answer all your questions


Step 1: Primary Settlement
Wastewater enters the first chamber, where gravity causes solids and heavier materials to settle at the bottom. This layer begins to break down through anaerobic digestion, reducing the volume of waste.


Step 2: Separation & Scum Control
Lighter materials and liquid flow into the second chamber, passing over a baffle. A scum layer naturally forms on the surface, helping to trap unpleasant odours. A specially designed dip outlet ensures that only clarified liquid passes on to the next stage, while scum and solids are kept back—preventing blockages in the system.


Step 3: Final Treatment & Dispersal
In the final stage, the treated liquid enters the designated percolation area, where it undergoes natural filtration into the ground. This stage completes the wastewater treatment process, safely returning it to the environment.

Tricel Vento Septic Tanks are designed for quick and hassle-free installation.
Installation Guide: Click Here

All septic tanks should be desludged at least once a year to ensure proper performance.
To arrange desludging, contact NI Water on 03457 440 088—please allow up to 12 days for the service to be completed (subject to change).
Once desludging is done, get in touch with the Depawater team for follow-up servicing and maintenance to keep your system running smoothly and within compliance.

Tricel tanks come with a green cap specifically designed for emptying. Simply remove the green cap to easily drain the tank.

The size of your septic tank should be based on your property’s usage and population equivalent.
Our Tricel Vento brochure outlines the capacities and dimensions of each model, helping you choose the right fit. For larger or commercial projects, we also offer bespoke septic tank solutions tailored to your specific needs. Getting the sizing right is essential for long-term performance, compliance, and cost-efficiency—our team is happy to advise.