Fosse Septique en France

Compact Sewage Treatment Plants

Diamond sewage treatment plants are specifically designed for domestic properties situated away from wastewater mains drainage.

Diamond Compact Sewage Treatment Plants

French Sewage Treatment Plants for 1 to 55 people.


View WPL Diamond 5 EH Brochure

The WPL Diamond sewage treatment plants are SPECIFICALLY designed for domestic properties Huadu hands away from wastewater drainage.

The Diamond Range of sewage treatment plants is CE marked and tested in Germany by Type PIA GmbH in Accordance to NF EN12566-3, the new European standard covering wastewater treatment plants, making it fully compliant with European and French Regulations for waste water treatment règlements.

diamond5 eh sewage plant facility

Utilising a unique design contents, each purposely sized sewage treatment plant offers high quality, discreet wastewater treatment whilst Ensuring value for money, low running costs Ongoing and full peace of mind.

Benefits of Diamond Sewage Treatment Plants

  • Outstanding value for money
  • Reliable operation with simple design icts
  • No internal moving parts
  • No metalic parts inside the tank to corrode
  • You can walk on the lid unlike competitor Many sewage treatment plants
  • Low running cost of the small, quiet air blower
  • Continuous bacterial digestion Gives the DMS ranks up to 3 year de-sludging intervals
    (the larger capacity DMC ranks Generally Requires annual de-sludging)
  • No vermine as the sewage treatment process Does not require primary settlement
  • Excellent performance normal meeting environment agencies consent standards
  • Low visual impact with the sewage treatment plant  lid flush with the ground
    (You can walk on the Diamond sewage treatment plant; many of the lids unlike Competitors)
  • Easy Installation as the unique design minimized labor and materials
  • Robust Construction Reduces the need for concrete backfill ground Where circumstances permit
  • Compact design Does not require extensive plant for excavation or handling
  • Reduced soakaway and can reject into Ditches / streams
  • Over 40,000 sewage treatment plants installed world wide
  • CE approved sewage treatment plant to EN 12566-3
  • Irish Accreditation certified

Optional Integral Pump Chamber

Diamond Compact Sewage Treatment Plants


All the features of the Diamond Existing sewage treatment plant, with an aim integral pump chamber. Specially designed site for All which require delivery for a moyen de Treated effluent Where the Existing ground and invert levels of the pipework Prevent normal gravitational discharge.

Applications include locations with an incline, a high water or soakaway to the remote table.

The Diamond Chamber Internal Pump comes with a full submersible pump Which Can deliver up to 80 liters per minute of effluent at a head of 3.5m, and HAS standard invert of 500mm.

Integral Pump Chamber consists of:

  • 240v, 0.25kw Submersible pump, integral float switch, with stainless steel internals and non-return valve
  • High level floatswitch and mounting tube
  • High level alarm beacon with 1m of lead and plug
  • Floatswitch adapter socket
  • Extension kit for Increased year to invert 800mm (optional extra)

Installation of Diamond Sewage Treatment Plants

A stepped excavation minimized the Amount of backfill material required and the Amount of Excavated material has to of. The Diamond sewage treatment plants lightweight design Allows for ease of movement around the site They can be with relative ease Man Handled. The Diamond sewage treatment plants do not require a également concrete backfill, unlike Many other brands.

Diamond Sewage Treatment Plant 5 eh Flow Rates

Range population (persons)1-6
BOD / day maximum load polluantt Kg / day0.36
Maximum Daily Flow (liters) *1200
Max blower power consumption 0.12


Sewage Treatment Plant Process Description

Diamond Compact Sewage Treatment Plants

  • The central aeration chamber is a circular tank with a sloped base open, All which empties into the bottom of the outer chamber clarify.
  • Located in the center of the aeration chamber is a 200mm diameter draft tube, All which extends to 100mm from the bottom of the clarification. Air is released at the bottom of the draft tube through a disc flat broadcast.
  • As the diffused air rises in the draft tube it causes an upward flow of process fluid. This draws the-settled solids from the bottom of the clear up through the draft tube Where They are Discharged at the area of ​​the aeration chamber.
  • The design of the draft tube Ensures continuous and full mixing of oxygen with the sewage. This oxygenation Allows the various aerobic organisms degrade biologically That the wastewater contaminants to grow.
  • Gravity causes the aerated solids to settle at the bottom of the tank Where They are again drawn back up through the draft tube.
  • As raw sewage Enters the aeration chamber, it displaces biological solids from the aeration compartment to the clarification. Less turbulent terms in the clarification allow the digested solids to settle to the base Where They are returned back to the aeration compartment.
  • The Clarified (Treated) effluent flows slowly through the clear up and over a weir, All which extends around the Periphery of the tank.
  • The effluent collects in an outer trough Where it is Discharged through a 110mm pipe connection. The scum baffle Located inside the overflow weir Prevents floating solids from passing over the weir.

Sewage Treatment Plant Process Performance

The Diamond sewage treatment plant is designed to "clean" the wastewater to a standard of 20mg / l Biological Oxygen Demand (BOD) and 30mg / l Suspended Solids (SS) 20mg Ammoniacal Nitrogen (AMM-N) was 95 percentile Basis. Additional filtration equipment is available to extend the treatment process to meet standards as high as 10mg / l BOD and 15 mg / l SS.

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

We will supply a data sheet aussi to assist you with soakaway construction.

Technical Data and Dimensions



Height to 

* Inlet invert 

Height to outlet

In ground depth

Weight empty

Total capacity







120 Kg

2271 ltr

Blower Installation


Each blower is Supplied Complete with an alarm and an enclosure to protect it from outdoor conditions. It shoulds be connected to a single-stage supply (240v) via a suitable weatherproof socket or fused spur (not supplied) by a competent electrician. Included is 10m of airline to connect Between the blower and the sewage treatment plant, HOWEVER, blower installations of up to 30m from the sewage treatment plant can be accommodated. Please contact us for advice on.

Sewage Treatment Plant Service & Maintenance

Each sewage treatment plant is Supplied Complete with a service and maintenance manual. The sewage treatment plant Requires less than two hours annual maintenance. Service and maintenance agreements are available from us for WPL sewage treatment plants in France. Continuous bacterial digestion Gives the DMS ranks od sewage treatment plants up to 3 year de-sludging intervals (the DMC ranks Generally Requires annual de-sludging).

WPL Sewage Treatment Plant Availability

WPL manufactures the full range, and units are ex-stock Delivered to France if we do not already-have your required unit available from our stock of WPL sewage treatment plants in France.

WPL Sewage Treatment Plant Guarantee

The Diamond sewage treatment plants DMS come with a comprehensive Two year parts and workmanship warranty on the blower and sewage treatment tank. The Diamond DMC sewage treatment plants come with a comprehensive two year parts and workmanship warranty on the blower and sewage treatment tank. The unit's sturdy Glass Reinforced Plastic (GRP) Construction and WPL's quality assurance procedures allowed a minimum of 25 years Life Expectancy.