Marsh Ultra:Polylok L Sewage Treatment Plant 6-12PE

from £2,275.00

The Marsh UPL brings industrial experience to domestic sewage treatment, combining proven performance with simple, easy-to-manage operation.

Drawing on Marsh Industries’ expertise in industrial and commercial sewage treatment, the UPL delivers reliable performance and cost-effective engineering for domestic applications.

Available in 6PE and 12PE models, the Marsh UPL is approved to BS EN12566-3 and provides treated effluent quality of approximately 20:30:20 mg/ltr (BOD:suspended solids:ammonia), meeting national consent standards.

Key features

  • Tested and approved to the most stringent European Standards: EN12566-3: 2005+A1:2009

  • Small footprint and shallow dig for easy installation provides enhanced health and safety benefits

  • Heavy duty shell as standard enables installation in all ground conditions. Unique ‘keying-in’ lip assists anchoring into granular or concrete surrounds

  • Near silent, energy efficient compressor (located externally) with integral alarm (approximate annual running costs of £35 p/annum)

  • High specification bio-media (310m3 per m2) and membrane diffuser ensures even circulation and maximum treatment efficiency

  • Unique Polylok tertiary filter reduces suspended solids and BOD by a further 40% helping to extend drainage field life

  • Sludge return pipe improves system circulation

  • Variable inverts for ease of installation at various depths – 250, 500 and 750mm risers available

  • Pumped outlets available

Operating Principle

The UPL uses a similar operating principle as the Marsh:Ensign. In addition to anaerobic digestion taking place in the primary settlement chamber the UPL unit allows the clarified water to pass into a second ‘aeration’ chamber where it is treated to remove the dissolved constituents. Here aerobic bacteria, supported by diffused air and mobile media, ensures full treatment is achieved before the treated effluent and ‘sloughed off’ bacteria flows to a final settlement chamber. The final effluent is then discharged to the drainage field or watercourse via a Polylok filter.

Size:

The Marsh UPL brings industrial experience to domestic sewage treatment, combining proven performance with simple, easy-to-manage operation.

Drawing on Marsh Industries’ expertise in industrial and commercial sewage treatment, the UPL delivers reliable performance and cost-effective engineering for domestic applications.

Available in 6PE and 12PE models, the Marsh UPL is approved to BS EN12566-3 and provides treated effluent quality of approximately 20:30:20 mg/ltr (BOD:suspended solids:ammonia), meeting national consent standards.

Key features

  • Tested and approved to the most stringent European Standards: EN12566-3: 2005+A1:2009

  • Small footprint and shallow dig for easy installation provides enhanced health and safety benefits

  • Heavy duty shell as standard enables installation in all ground conditions. Unique ‘keying-in’ lip assists anchoring into granular or concrete surrounds

  • Near silent, energy efficient compressor (located externally) with integral alarm (approximate annual running costs of £35 p/annum)

  • High specification bio-media (310m3 per m2) and membrane diffuser ensures even circulation and maximum treatment efficiency

  • Unique Polylok tertiary filter reduces suspended solids and BOD by a further 40% helping to extend drainage field life

  • Sludge return pipe improves system circulation

  • Variable inverts for ease of installation at various depths – 250, 500 and 750mm risers available

  • Pumped outlets available

Operating Principle

The UPL uses a similar operating principle as the Marsh:Ensign. In addition to anaerobic digestion taking place in the primary settlement chamber the UPL unit allows the clarified water to pass into a second ‘aeration’ chamber where it is treated to remove the dissolved constituents. Here aerobic bacteria, supported by diffused air and mobile media, ensures full treatment is achieved before the treated effluent and ‘sloughed off’ bacteria flows to a final settlement chamber. The final effluent is then discharged to the drainage field or watercourse via a Polylok filter.


Product Specifications

Size: UPL 6 (up to 6 people)

Length (mm): 1700

Width (+/-50mm): 1700

Height (+/-50mm): 2050

Inlet invert (+/-50 mm): 650

Inlet dia (mm): 110

Outlet invert (mm): 725

Outlet dia (mm): 110

Download Specification

Size: UPL 12 (up to 12 people)

Length (mm): 2300

Width (+/-50mm): 2000

Height (+/-50mm): 2050

Inlet invert (+/-50 mm): 650

Inlet dia (mm): 110

Outlet invert (mm): 725

Outlet dia (mm): 110

Download Specification


Delivery & Returns

  • Free delivery for England, Wales, and most of mainland Scotland. Additional charges may apply for the Scottish Highlands, Scottish Islands, Northern Ireland, Isle of Man, Channel Islands, or other remote locations, confirmed before order confirmation or dispatch.

  • Most orders are fulfilled within 10 working days from payment. Larger or specialist items may take longer — please contact us if your order is time-critical.

  • Offloading is the customer’s responsibility. Suitable equipment should be available to safely remove goods from the delivery vehicle.

  • For full delivery details, see our Delivery Policy.

  • Returns & Refunds: Standard items can be returned within 14 days of receipt, subject to our Returns & Refunds Policy. Many products are bespoke or custom-made (modified dimensions, fittings, pumps, colours, etc.) and cannot be returned unless faulty.