Sewage Treatment Tank Service and Maintenance in Northern Ireland

Depawater Ltd provides professional servicing and maintenance for Tricel and other makes of wastewater treatment systems including Tricel Novo 95% treatment tanks, Tricel Vitae 97.5% and Kingspan Biodisc treatment tanks in Northern Ireland Counties.




May 2021


Newry, Co. Down


Service of a Tricel Sewage Treatment Tank


Tricel Vitae >97.5% BOD treatment plant

Customer requiring a service on a Tricel Vitae UK6 97.5% sewage treatment tank

A customer phoned Depawater Ltd with a septic tank maintenance enquiry for a Tricel Vitae 97.5% sewage treatment tank.  They had been experiencing a foul odour from their tank.  We initially assisted them by informing them to call NI Water to empty the sludge compartment in their tank. Emptying the sludge compartment annually is a critically important part of maintaining your septic tank or sewage treatment tank. Currently, in Northern Ireland, this de-sludging service is provided annually by NI Water.

You must call NI Water (0345 7440088) or book online to avail of this service as the maintenance of your septic tank or domestic wastewater treatment system is the homeowner’s responsibility as set out in your consent to discharge approval.  Alternatively, we highly recommend Glenvale waste to privately empty your wastewater treatment tank.

Once the Tricel Vitae wastewater treatment system had been desludged, Depawater scheduled an appointment with the customer to fully service their sewage treatment system and ensure proper operation and function.

Glenvale Waste Lorry

Depawater Ltd. providing top septic tank service as soon as possible!

Even though the customer had told us their treatment tank had been desludged, Depawater identified that the primary sludge chamber within the treatment tank had not been emptied in time. The video below explains the desludging process.

As the primary chamber was not desludged in time this resulted in sludge crossing over into the secondary treatment chamber.  This caused the mixing of raw sludge and hence the reason for the bad smell.  As you can see in the image below, the sludge in the primary chamber on the left should NOT be mixing with the clear water in the chamber on the right!

showing inside of a Tricel Vitae treatment tank

Having identified the problem, the customer was advised to have the secondary chamber emptied and flushed out to correct the issue. Glenvale waste promptly provided this service the very same day!

Now the tank was ready to be serviced!  Following a step-by-step process, all components were checked and cleaned, filters were replaced and any blockages cleared, ensuring correct flows and continuous high performance from the Tricel 97.5% sewage treatment tank.

Our professionally trained and British Water accredited service engineers were able to easily explain the workings of the system, helping the customer to clearly understand the importance of routine treatment tank service and maintenance and how critical it is that the sludge chamber is emptied annually.

A comprehensive service report was filed and a copy given to the customer, informing them of the actions carried out and the condition of all parts of their system. This information is logged into Depawater Ltd.’s unique service database containing the complete service history.

When a new customer is added to our servicing database, Depawater will provide a free courtesy call every year, to remind them to empty their sewage treatment tank and to help them keep on track with the necessary service and maintenance requirements.


Service of Tricel sewage treatment tank complete – Another Happy Customer!

Depawater Ltd. provided yet another customer with a professional and courteous service. The customer was delighted that their treatment tank was now running correctly and there was no longer a foul odour and the issue was easily resolved.

A service and maintenance manual can be downloaded to explain the working of the Tricel wastewater treatment system, informing the customer on the do’s and don’ts when maintaining a domestic sewage treatment system.

The comprehensive service report we provide demonstrates the extent of the maintenance carried out, allowing our customers peace of mind that their Tricel wastewater treatment tank is currently compliant, free from breakdown and is not having a polluting effect on our environment.

For sewage treatment tank maintenance on all makes of wastewater treatment tanks in Northern Ireland, call Depawater Ltd today for professional service you can trust, protecting you, your family, and our environment.

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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


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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. 


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