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

from £2,335.00

Marsh Ultra:Polylok L Sewage Treatment Plant

The Marsh Ultra:Polylok L (UPL) brings industrial-grade performance to domestic sewage treatment, drawing on Marsh Industries' experience in the commercial sector. Manufactured by Marsh Industries, it's tested and approved to BS EN12566-3/A1:2009, with an effluent quality of 20:30:20 mg/ltr (BOD:suspended solids:ammonia), within national consent standards. Waste settles in a primary chamber before passing into an aeration chamber, where diffused air and bio-media complete treatment, before discharge via a Polylok filter to the drainage field or watercourse.

Size & options

Available in 6PE and 12PE models. Variable inverts allow installation at various depths — 250, 500 and 750mm risers available. Pumped outlets also available.

Key features

  • Low running costs – near-silent, energy-efficient compressor, housed externally as standard, with approximate annual running costs of £35

  • Easy installation – small footprint and shallow dig, with a heavy duty shell suited to all ground conditions

  • Minimal maintenance – sludge return pipe improves circulation; Polylok tertiary filter reduces suspended solids and BOD by a further 40%, helping extend drainage field life

  • High-spec bio-media (310m³ per m²) with membrane diffuser for even circulation and maximum treatment efficiency

  • Unique 'keying-in' lip for secure anchoring into granular or concrete surrounds

Size:

Marsh Ultra:Polylok L Sewage Treatment Plant

The Marsh Ultra:Polylok L (UPL) brings industrial-grade performance to domestic sewage treatment, drawing on Marsh Industries' experience in the commercial sector. Manufactured by Marsh Industries, it's tested and approved to BS EN12566-3/A1:2009, with an effluent quality of 20:30:20 mg/ltr (BOD:suspended solids:ammonia), within national consent standards. Waste settles in a primary chamber before passing into an aeration chamber, where diffused air and bio-media complete treatment, before discharge via a Polylok filter to the drainage field or watercourse.

Size & options

Available in 6PE and 12PE models. Variable inverts allow installation at various depths — 250, 500 and 750mm risers available. Pumped outlets also available.

Key features

  • Low running costs – near-silent, energy-efficient compressor, housed externally as standard, with approximate annual running costs of £35

  • Easy installation – small footprint and shallow dig, with a heavy duty shell suited to all ground conditions

  • Minimal maintenance – sludge return pipe improves circulation; Polylok tertiary filter reduces suspended solids and BOD by a further 40%, helping extend drainage field life

  • High-spec bio-media (310m³ per m²) with membrane diffuser for even circulation and maximum treatment efficiency

  • Unique 'keying-in' lip for secure anchoring into granular or concrete surrounds

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

Installation Manual
Certificate

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.