Technical zone

On this page

  • About the Diamond range; installation and key features
  • Technical tables, indicative drawings and kiosks overview
  • Domestic application overview

The Diamond Range

BS EN12566-3 2014 approval, UK and European patent granted (below ground) Diamond package wastewater (sewage) treatment range, is designed for properties (domestic and commercial) where mains drainage is unavailable.

The compact Diamond range has the flexibility to be configured to meet for various population sizes. The DMS tank is 1 up to 20 population equivalent (PE) and the DMC tank is 21 up to 55 population equivalent (PE), which can be installed in ‘wet’ or ‘dry’ ground conditions, discharging safely to soakaways or watercourses.

The standard package includes a Diamond tank, kiosk, alarm beacon, blower (housed in a kiosk) and 10 metres air hose. Flexible options mentioned later on this page.

Installation

The robust Diamond package wastewater treatment plant is compact in design, keeping the excavation to a minimum and the installation simple. In some situations, no concrete backfill is needed for the Diamond tank.  The kiosk can be installed above or below ground dependent on site conditions.

Installation manual

A comprehensive installation manual is always supplied with each Diamond plant, explaining the installation process in detail and should be read thoroughly prior to installation. We recommend this should be undertaken by a qualified and experienced installer of package wastewater treatment plants.

We recommend that the installer and all sub-contractors should read the installation manual before commencing the installation to avoid loss of warranty.
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Key features

  • 25 years tank warranty
  • CE mark, EN12566-3 approval
  • Effluent standard; as a minimum: 20mg/l BOD; 30mg/l SS; 20mg/l NH3
  • Load tested and water tight
  • Tank sizes to meet individual requirements
  • Part H2 UK building regs compliant
  • LABC registered
  • Meets General Binding rules
  • Designed using British Water Code of practice flows & Loads
  • Compact design, minimal excavation
  • Installed in ‘wet’ or ‘dry’ ground conditions
  • Flushest lid to the ground
  • No moving parts within the tank
  • Up to 3 years de-sludge intervals
  • No odour
  • Alarm beacon included
  • Original WPL Diamond, patent granted
  • Robust design, UK manufacture

Diamond DMS - 1 up to 20 PE

Our reliable DMS range caters for properties housing 1 up to 20 people. Typical uses include domestic homes and small commercial businesses such as farm shops, B&Bs and glamping sites. The standard tank models come supplied with a weather proof kiosk and low air pressure alarm beacon and blower inside.

Dimensions:

Loadings:

DMS Indicative technical drawing:

Standard package - Diamond DMS

Standard tank models DMS2, DMS3, DMS4 and DMS5 come supplied with:

  • Tank as specified x1.
  • Tank lid with M10 x 50mm stainless steel hex bolts x2.
  • Weatherproof kiosk x1, comes with a low air pressure alarm beacon and blower inside.
  • 10m of ¾ inch hose with hose clips x2, for the blower.

Kiosk for the Diamond DMS:

The kiosk with a small footprint and lid opening, comes complete with alarm mounted beacon and reliable blowers as standard. Additional blower options available on request.

The kiosk can be installed above or below ground dependent on site conditions.

Diamond DMC - 21 up to 55 PE

Our robust DMC range caters for properties housing from 21 up to 55 people. Typical uses include domestic homes, small rural communities and small commercial businesses such as industrial units, campsites and country estates. The standard tank models come supplied with a weather proof kiosk and low air pressure alarm beacon and blower inside.

Dimensions:

Loadings:

DMC Indicative technical drawing:

Technical-drawing-of-a-below-ground-WPL-Diamond-DMC-compact-package-sewage-wastewater-treatment-plant-for-off-mains-drainge-serves-1-up-to-55-people.

Standard package - Diamond DMC

Standard tank models DMC6, DMC7, DMC8 and DMC come supplied with:

  • Tank as specified x1.
  • Tank lid with M10 x 50mm, stainless steel hex bolts x2.
  • Weatherproof kiosk x1, comes with a low air pressure alarm beacon and blower inside.
  • 10m of ¾ inch hose with hose clips x2, for the airline from the blower outlet to the tank air diffuser.

 

Kiosk for the Diamond DMC:

The kiosk with a small footprint and a single door, comes complete with alarm mounted beacon and reliable blowers as standard. Additional blower options available on request.

Domestic applications

In domestic applications the Diamond wastewater treatment plant comes in a range of sizes and can provide wastewater treatment for domestic population equivalents of up to 55 persons, meeting consent standards of 20mg/l Biological Oxygen Demand (BOD), 30 mg/l Suspended Solids (SS) and 20mg/l Ammoniacal Nitrogen (AMM-N).

The Diamond is process performance tested, certified and guaranteed subject to consistent influent conditions and regular plant maintenance as per the manufacturer’s instructions.

If more stringent environmental requirements are specified, please contact us.

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The Diamond standard

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  • Fully tested, accredited and certified under European Standard CE EN12566-3 – 2014 approval which allows a CE mark.
  • Meets consent standards of 20mg/l BOD; 30mg/l SS; 20mg/l NH3 as a minimum.
  • Meets current Binding Rules legislation for exemption from a permit to discharge by the Environmental Agency in England (EA).
  • Fully compliant with Part H2 UK building regulations.
  • LABC registered in the UK and Wales.
  • Designed using the British Water Code of Practice Flows and Loads, to ensure the tank is correctly sized.
  • WCSEE is a member of British Water.
  • The Diamond is UK and European patented. This means that our design is completely unique. Patent number: GB 250337.
  • WCSEE holds accreditation standards ISO 14001, ISO 9001 and ISO 45001
  • Mark Ennion, MD at Border Water Technologies

    The customer services & accounts management received from WPL staff is excellent, we have been dealing with WPL for a good number of years and it has always been great, any issues are dealt with straight away and they are by far the best company that we deal with.
  • Peter Stedman, Operations Director at Hutchinson Environmental

    WPL package treatment plants are very well made, with robust manufacturing and quality processes, which ensure continuous high performance and longevity. The back-up and support from the team is also something you don’t get from many companies. Those qualities give us confidence as an installation and maintenance company - confidence that we can pass on to the site owner.
  • Adrian Riggs, Contract Manager at MJ Abbott

    The Diamond always meets the schedule for our installation teams with special builds and deeper inverts, manufactured to order in quick turnaround times.
  • Jackie Slater, Office Manager at Drainstore

    Drainstore have been a customer of WPL for a number of years.  The service we receive has always been excellent, in particular from our Key Account Manager, Becky Belton. If we have had any problems or need anything urgently, they have always done their absolute best to help and accommodate us. We look forward to many more years of working with them.
  • Tony Shaw, Sales Manager for Binder Limited

    Binder have been involved in the sale, installation and maintenance of septic tanks and latterly sewage treatment plants since 1964. Our supplier base is considerable, however, one constant in this mix is WPL. We have found that working with WPL has that stress free element that all customers look for. Whenever there are problems, and inevitably there are from time to time, we have found WPL to always be part of the solution and never part of the problem. This approach from WPL has made for a solid working relationship for which I am sure both parties have benefitted from and that it will continue long into the future.