BioDisc NA6 Sewage Treatment Plant

Sewage Underground Customer Off Loading, Free Delivery Customer Off Loading, Free Delivery

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from €3,984.00 ex VAT
(€4,900.32 inc VAT)

Product Description


The new and improved N Range BioDisc Sewage Treatment Plant is engineered to treat wastewater to a very high standard delivering peace of mind with reliable treatment of wastewater, offering affordable lifetime costs compared to other treatment processes. 

For domestic dwellings without access to mains drainage, the BioDisc Sewage Treatment Plant provides a reliable, efficient and environmentally safe solution to your sewage disposal needs.  It is ideal for locations where discharge is to sub-surface irrigation, or to a suitable watercourse where approved by the Regulator, and where a septic tank will not meet the required standards. For added peace of mind, we offer an extended warranty period of 7 years* exclusively for the BioDisc NA. Terms and conditions apply please visit Warranty Terms.

Unique Design

The BioDisc is the only packaged sewage treatment plant utilising Rotating Biological Contractor technology for small domestic applications. This process offers inherent cost and performance benefits with a low carbon footprint.

Assured Performance

BioDisc is a high performance package treatment plant which, in normal domestic situations, will produce effluent qualities of better than 8mg/l BOD, 13mg/l SS and 4mg/l ammonia.

Product Benefits:

  • Improved BOD, SS & NH4N effluent levels
  • New split cover, offering safer access for service
  • Affordable lifetime running costs
  • Odour free
  • Silent Operation
  • 7 year warranty *(T&C's apply)
  • Third party tested to EN-12566-3




Breakdown Process

  • Primary settlement tank: Wastewater and sewage flows into the primary settlement tank where the large solids are retained for future removal.
  • First stage biological treatment: The liquor and fine solids then flow into the Biological Treatment Zone 1 where the first stage of treatment occurs.
  • Second stage biological treatment: The liquor is then fed forward at a controlled rate into Biological Treatment Zone 2 for further treatment.
  • Final settlement tank: The clean liquid passes into the final settlement tank where it can be discharged to ground or water course.

Due to higher demands on wastewater effluent qualities, Klargester have designed a new tertiary module that works alongside our range of sewage treatment plants to achieve a higher BOD removal.

BioTreat Tertiary Treatment System

The Tertiary Treatment system comprises of horizontal modules constructed from GRP, filled with granular material which provides the hydraulic flow path and the environment to achieve improved effluent quality.


  • Improved effluent quality – BOD5 99.2%*
  • Improved Suspended Solids – 99.3%*
  • Reduced risk of a pollution incident
  • Third party tested to EN 12566-3
  • Easy to install and maintain
  • Affordable service plans available

*When the Tertiary Treatment System is used alongside our Klargester Commercial BioDisc.

Specification (BIOT08 model):-

  • Daily Flow - 11.25 m3/d
  • Diameter - 2605 mm
  • Length - 7933 mm
  • Inlet Invert - 600/1000 mm
  • Outlet Invert - 700/1100 mm
  • Inlet / Outlet Pipework - 160 mm diameter


To find out more about the Klargester BioDisc click on Klargester BioDisc



To learn more on the Klargester Winning Warranty click here.

To register your BioDisc click here


All tanks are delivered on 45ft Flat-bed Articulated Trailers, so off-loading equipment on site is necessary.

HIAB off-loading is available at extra cost, if requested.

It is the responsibility of the customer to inform us, if off-loading equipment is required.



Before you purchase your sewage treatment system you may need advice on which system is suitable. From percolation tests and site assessments to specifiying the correct sewage treatment plant for installation we can help you through the process. If you would like our help, please click on Site Assessment Report and fill out the form  and we can take it from there.

Kingspan offer a commissioning and maintenance service on all their wastewater products. Your service and maintenance visit will include; system integrity and operation, check of all moving parts, effluent quality, flow rates, discharge consents and management system checks. Kingspan are currently offering free commissioning valid within three months of purchase.


To ensure your system operates to maximum efficiency, we recommend tried and tested commissioning by Klargesters own trained engineers.
Our unrivalled knowledge means that we are best placed to carry out bespoke assessments to get your system up and running. The commissioning will also provide you with a unique checklist against your system, ensuring your complete peace of mind and reassurance that your system's mechanical and electrical components are in good working order.


For more information download the information below, call 0818 543 500 or go to Kingspan Service

Product Specification

  • Product Code: KLAR
  • Fuel Type: Sewage
  • Shape: Underground
  • Shipping: Customer Off Loading, Free Delivery
  • Weight: 310.000kg, 325.000kg, 380.000kg
  • Dimensions: H:2160mm, H:2460mm, H:2960mm
  • Diameter: 1995mm

Delivery Terms

Kingspan Tanks - Tail-lift deliveries are available for most tanks up to 2,000 Litre capacities for kerbside delivery.
It is the responsibility of the customer to inform us, if off-loading equipment is required.

Klargester Tanks  - All tanks are delivered on 45ft Flat-bed Articulated Trailers, so off-loading equipment on site is necessary.
HIAB off-loading is available at extra cost, if requested.
It is the responsibility of the customer to inform us, if off-loading equipment is required.

Harlequin Tanks  - Tail-lift deliveries are available for most tanks up to 2,500 Litre capacities for kerbside delivery subject to availability.
It is the responsibility of the customer to inform us, if off-loading equipment is required. undertakes to attempt to fulfill all orders within a maximum of 7 working days of order acceptance, unless advised otherwise. In the event that any order is delayed, will not be responsible for any consequential loss or damage that this delay may cause.

Smaller items (including most accessories and consumables) will normally be despatched by courier.
Larger items (including all storage tanks) will normally be delivered by carrier. 

Please note that for all items delivered by carrier, normally a truck + 40ft trailer, it is the customer's responsibility to ensure adequate vehicular access and to provide suitable offloading equipment, where required. Please notify us, if this might pose a problem and we will endeavour to facilitate your request. 

Returns Information


In accordance with Irish and European Union consumer laws, you have seven days after receipt of order to cancel the order in its entirety or any part thereof, providing the goods are in a re-saleable condition. Should you wish to cancel any order, you must first contact for a ‘Returns Authorisation Number’.

Please call 051 351325 or e-mail 

After the Returns Authorisation Number has been issued, we will make arrangements with you for the goods to be returned. If you wish to arrange the collection of the goods, please note that a carriage and administration charge will apply, which will not exceed 35% of the gross value of the goods.

Upon return of the cancelled goods to and verification that they are in a re-saleable condition, we will refund the value of the goods, less any collection and administration charges, within 28 days.


If you believe that products you have purchased from are defective, please report this immediately to by e-mail or call 051 351325. 

If they are within the manufacturer’s guarantee period, we will arrange with the manufacturer to replace or repair the goods at the manufacturer’s discretion and consistent with their guarantee. 
Where it is necessary to inspect the goods on site and an inspection proves the fault is neither the fault of, nor the product manufacturer, an inspection charge will apply, which will be advised by the manufacturer prior to site inspection.

Please note that where guarantees are available in excess of those required by law, these are provided at the discretion of the product manufacturer and not Additionally, will not be liable for any claims for consequential damage or loss. 

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