Harlequin CAP 12 Sewage Treatment Plant | 10-12 Person

£2,995.00 Exc VAT

(£3594.00 Inc VAT)

Delivery 3 - 5 Working Days
Free UK Mainland Delivery
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SKU: CAP-12 Category:

Product Description

Harlequin CAP 12 Sewage Treatment Plant | 10-12 Person

The Harlequin CAP 12 Sewage Treatment Plant is a reliable, high-performance wastewater treatment solution designed for larger domestic properties of up to 12 people. Using advanced Moving Bed Biofilm Reactor (MBBR) technology, the CAP 12 efficiently treats household wastewater, providing an effective off-mains drainage solution for properties without access to mains sewage.

Combining durable construction, efficient operation and straightforward installation, the CAP 12 is designed to provide dependable wastewater treatment with minimal maintenance. Its compact design and external air blower make it a practical choice for a wide range of domestic and rural applications.

Key Features

  • Suitable for properties with up to 12 people
  • MBBR biological treatment technology
  • Manufactured from durable Medium Density Polyethylene (MDPE)
  • 110mm inlet and outlet connections
  • Integrated lifting eyes for easier handling and installation
  • Fully secured 450mm pedestrian-duty, flush-fitting low-profile manhole cover
  • External air blower supplied as standard
  • Easy access to the bubble diffuser within the tank
  • Compact and lightweight design
  • Quiet operation when installed correctly
  • 12-month service period
  • Certified for use in the UK to EN12566-3
  • 2-year warranty for registered products
  • High pollutant removal performance, producing treated effluent suitable for discharge to a stream or soakaway, subject to the relevant permissions and site requirements

Specification

  • Population Served: 10–12 People
  • Treatment Technology: MBBR
  • Tank Material: MDPE
  • Inlet Invert: 550mm
  • Outlet Invert: 625mm
  • Blower: External 76W
  • Power Supply: 230V
  • Energy Consumption: Approx. 0.8 kWh/day
  • Desludging: Approximately every 12 months, depending on usage
  • Certification: EN12566-3

Suitable Applications

  • Large detached homes
  • Rural properties
  • Barn conversions
  • Holiday cottages
  • New-build homes
  • Properties without access to mains drainage

The Harlequin CAP 12 is supplied with a weatherproof external air blower, providing a continuous supply of oxygen to the biological treatment process. This supports efficient wastewater treatment while helping to keep operating noise to a minimum.

If you are unsure which sewage treatment plant is suitable for your property, our experienced team can provide advice on selecting the right system. We can also arrange a professional site visit where required to assess your property and recommend an appropriate wastewater treatment solution.

Optional Extras

Low Pressure Alarm – Provides an early warning if the blower pressure drops, helping to identify potential issues before they affect the performance of the sewage treatment plant.

Product Specification
Weight 460 kg
Dimensions L 2900 x W 1620 x H 2000 mm
Population Served

10-12 Person

Desludging Interval

12 Months (depending on usage)

Manufacturer

Delivery and Returns

Shipping costs for standard postcodes within UK Mainland are calculated at checkout when a postcode is entered.

Delivery charges are based on current manufacturer and courier rates. In some cases, delivery costs may be subject to confirmation after an order has been placed due to supplier delivery zones or freight changes. If an additional delivery charge applies, the customer will be notified before the order is dispatched and given the option to proceed or cancel the order for a full refund.

Some areas may incur additional charges, including:

  • Scottish Highlands and Islands

  • Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly

  • Northern Ireland

  • Republic of Ireland

Additional charges may apply for postcodes in these areas:
AB, BT, CA, CT, DD, DG, EH, FK, G, GY, IM, IV, JE, KA, KW, KY, LD, LL, ML, PA, PH, PO 30–41, SA, SY, TD, TN, TR, ZE

If your postcode is listed above, please contact us before ordering for a shipping quote.

Some products are only available for delivery within England & Wales; this will be stated on the product page. If you are outside this area, please contact us for a quotation.


Delivery Lead Times

  • Refer to individual product pages for expected delivery times.

  • Custom orders may take longer; please enquire before ordering.

  • Items on the same order may be delivered separately due to stock locations.

  • If delivery is delayed, we will notify you via email.


Delivery Method

  • All deliveries are kerbside unless stated otherwise.

  • For larger items, customer offloading may be required.

  • Someone must be available to receive and inspect the goods.

  • Goods may be left in a safe place at the customer’s risk; Online Tank Store cannot accept responsibility once goods are left.

Note: By signing for the goods, you confirm that the outer packaging is intact and free from visible damage. Any visible damage must be noted on the delivery paperwork or the delivery refused.

Scheduled delivery times may be accommodated; please add instructions in the Customer Notes section at checkout.


Missing or Faulty Items

If items are missing or arrive damaged:

  1. Contact us within 48 hours of delivery at [email protected]

  2. Provide:

    • Order number

    • Photos of the goods

    • Brief description of the issue

We may require images for the manufacturer to provide replacements.


Delivery Charges & Returns

  • Ensure the product is the correct size and suitable for your intended use.

  • Standard tanks (no customisation) are returnable but subject to a restocking charge and must be returned in A1 condition. Returns may be expensive due to size and weight; please check before ordering.

  • Failed delivery attempts: After one unsuccessful delivery attempt, items will be returned to the depot, and redelivery charges may apply.

  • Special or custom tanks are non-returnable. If the wrong product is ordered or the item is no longer required, it cannot be returned, and no refund will be issued.

Our full returns and refund policy can be found by clicking here.

It is important to us that the items you order are correct for your needs however, we understand that situations and requirements can change. It can be costly to return an order so please ensure you are certain of your requirements before you order and that you have read the returns policy above for details.

Custom Tank – An order is considered ‘custom’ when a non-standard configuration or colour is requested. Custom orders are not eligible for return so please ensure the product is what you require before ordering. By purchasing, you are agreeing to the above terms.

Product Description

Harlequin CAP 12 Sewage Treatment Plant | 10-12 Person

The Harlequin CAP 12 Sewage Treatment Plant is a reliable, high-performance wastewater treatment solution designed for larger domestic properties of up to 12 people. Using advanced Moving Bed Biofilm Reactor (MBBR) technology, the CAP 12 efficiently treats household wastewater, providing an effective off-mains drainage solution for properties without access to mains sewage.

Combining durable construction, efficient operation and straightforward installation, the CAP 12 is designed to provide dependable wastewater treatment with minimal maintenance. Its compact design and external air blower make it a practical choice for a wide range of domestic and rural applications.

Key Features

  • Suitable for properties with up to 12 people
  • MBBR biological treatment technology
  • Manufactured from durable Medium Density Polyethylene (MDPE)
  • 110mm inlet and outlet connections
  • Integrated lifting eyes for easier handling and installation
  • Fully secured 450mm pedestrian-duty, flush-fitting low-profile manhole cover
  • External air blower supplied as standard
  • Easy access to the bubble diffuser within the tank
  • Compact and lightweight design
  • Quiet operation when installed correctly
  • 12-month service period
  • Certified for use in the UK to EN12566-3
  • 2-year warranty for registered products
  • High pollutant removal performance, producing treated effluent suitable for discharge to a stream or soakaway, subject to the relevant permissions and site requirements

Specification

  • Population Served: 10–12 People
  • Treatment Technology: MBBR
  • Tank Material: MDPE
  • Inlet Invert: 550mm
  • Outlet Invert: 625mm
  • Blower: External 76W
  • Power Supply: 230V
  • Energy Consumption: Approx. 0.8 kWh/day
  • Desludging: Approximately every 12 months, depending on usage
  • Certification: EN12566-3

Suitable Applications

  • Large detached homes
  • Rural properties
  • Barn conversions
  • Holiday cottages
  • New-build homes
  • Properties without access to mains drainage

The Harlequin CAP 12 is supplied with a weatherproof external air blower, providing a continuous supply of oxygen to the biological treatment process. This supports efficient wastewater treatment while helping to keep operating noise to a minimum.

If you are unsure which sewage treatment plant is suitable for your property, our experienced team can provide advice on selecting the right system. We can also arrange a professional site visit where required to assess your property and recommend an appropriate wastewater treatment solution.

Optional Extras

Low Pressure Alarm – Provides an early warning if the blower pressure drops, helping to identify potential issues before they affect the performance of the sewage treatment plant.

Product Specification
Weight 460 kg
Dimensions L 2900 x W 1620 x H 2000 mm
Population Served

10-12 Person

Desludging Interval

12 Months (depending on usage)

Manufacturer

Delivery and Returns

Shipping costs for standard postcodes within UK Mainland are calculated at checkout when a postcode is entered.

Delivery charges are based on current manufacturer and courier rates. In some cases, delivery costs may be subject to confirmation after an order has been placed due to supplier delivery zones or freight changes. If an additional delivery charge applies, the customer will be notified before the order is dispatched and given the option to proceed or cancel the order for a full refund.

Some areas may incur additional charges, including:

  • Scottish Highlands and Islands

  • Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly

  • Northern Ireland

  • Republic of Ireland

Additional charges may apply for postcodes in these areas:
AB, BT, CA, CT, DD, DG, EH, FK, G, GY, IM, IV, JE, KA, KW, KY, LD, LL, ML, PA, PH, PO 30–41, SA, SY, TD, TN, TR, ZE

If your postcode is listed above, please contact us before ordering for a shipping quote.

Some products are only available for delivery within England & Wales; this will be stated on the product page. If you are outside this area, please contact us for a quotation.


Delivery Lead Times

  • Refer to individual product pages for expected delivery times.

  • Custom orders may take longer; please enquire before ordering.

  • Items on the same order may be delivered separately due to stock locations.

  • If delivery is delayed, we will notify you via email.


Delivery Method

  • All deliveries are kerbside unless stated otherwise.

  • For larger items, customer offloading may be required.

  • Someone must be available to receive and inspect the goods.

  • Goods may be left in a safe place at the customer’s risk; Online Tank Store cannot accept responsibility once goods are left.

Note: By signing for the goods, you confirm that the outer packaging is intact and free from visible damage. Any visible damage must be noted on the delivery paperwork or the delivery refused.

Scheduled delivery times may be accommodated; please add instructions in the Customer Notes section at checkout.


Missing or Faulty Items

If items are missing or arrive damaged:

  1. Contact us within 48 hours of delivery at [email protected]

  2. Provide:

    • Order number

    • Photos of the goods

    • Brief description of the issue

We may require images for the manufacturer to provide replacements.


Delivery Charges & Returns

  • Ensure the product is the correct size and suitable for your intended use.

  • Standard tanks (no customisation) are returnable but subject to a restocking charge and must be returned in A1 condition. Returns may be expensive due to size and weight; please check before ordering.

  • Failed delivery attempts: After one unsuccessful delivery attempt, items will be returned to the depot, and redelivery charges may apply.

  • Special or custom tanks are non-returnable. If the wrong product is ordered or the item is no longer required, it cannot be returned, and no refund will be issued.

Our full returns and refund policy can be found by clicking here.

It is important to us that the items you order are correct for your needs however, we understand that situations and requirements can change. It can be costly to return an order so please ensure you are certain of your requirements before you order and that you have read the returns policy above for details.

Custom Tank – An order is considered ‘custom’ when a non-standard configuration or colour is requested. Custom orders are not eligible for return so please ensure the product is what you require before ordering. By purchasing, you are agreeing to the above terms.