SEWAGE TREATMENT PLANTS
Residential Sewage Treatment
Case study overview
Date
Autumn 2016
Location
Newry, Co.Down, NI
Industry Sector
Self-build
Product Used
Project Introduction
During the autumn of 2016, Depawater received an inquiry from a homeowner who required pricing on a residential sewage treatment plant for their new four-bedroom bungalow.
The self-build project was well underway; the percolation test had already been carried out, and the consent to discharge approved. Following the initial phone call, a site visit was carried out and the price was quickly agreed.
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The Installation
Step 1
The Tricel Novo UK6 Plus arrived on site as per schedule. The homeowner arranged the hire of a mini digger and was ready to begin installation of the new treatment plant.
Step 2
A small hole is excavated to fit the dimensions of the Novo UK6. A concrete backfill was used in this case upon the homeowner’s request, but wasn’t necessary as the ground conditions were excellent.
Step 3
As per the building control specifications – utility holes and back inlet gully traps were installed in place around the dwelling.
Step 4
Three cubic yards of semi-dry concrete was then used to backfill the hole.
Step 5
The semi-dry concrete is leveled to ensure the tank is situated in a level position.
Step 6
The angle of the pipe coming into the tank from the dwelling is checked to ensure it connects correctly (at the same level as the invert level on the tank).
Step 7
Installers position the tank into place. Constructed from SMC material, the Tricel Novo UK 6 weighs only 300kg, which is lighter and stronger than plastic alternatives. Installation is a simple process, requiring only a small digger.
Step 8
Once installed, the level is re-checked to ensure correct positioning.
Step 9
The tank is filled with water, ready to start up. After the electrical connection, the system is immediately operational.
Step 10
We bury he tank in the semi-dry concrete to secure and stabilise its position. Semi-dry concrete is optimal in wet site conditions. Otherwise, 20mm gravel for backfill will suffice.
Step 11
We now cover the tank with topsoil, leaving the access points for servicing.
Step 12
The installation is complete! Quick, easy & efficient.
TRICEL SOLUTION
The results of the site visit put forward the Tricel Novo UK6 residential sewage treatment plant (gravity) as the best solution. This plant works in conjunction with a percolation area installation consisting of four 10m (L) x 600mm (W) x 600mm (H) trenches. Inside each of these four trenches is a 100mm twin-wall surrounded perforated pipe covered in 150mm of cleaned/washed bluestone.
The Novo is the sewage treatment plant which is the best matching the requirements of the client’s site. It was also choice of the homeowner due to reliability, cost-effectiveness, CE certification, low running cost and its quick and easy to install process.
The Feedback
Short lead time, fast delivery and quick installation
In total, it took just three days to complete the whole installation of the residential sewage treatment plant. Including:
- Creating the percolation area
- Installation of the tank
- Installation of all the pipe works around the house
- The commissioning of the tank.
The project ran smoothly, without any issues, the choice of the tank (Tricel Novo) was also crucial for the ease of installation. The short timeline from the first call, to the installation of the residential sewage treatment plant, was successfully met.
Depawater did a quick delivery to the clients. As the Tricel Novo range is readily available in stock, the customer’s requirements for a speedy and dependable resolution were easily met.
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