The Diamond sewage treatment plants are designed with innovative features ensuring a reliable and effective means of treating effluent from properties not connected to mains drainage.
They are CE marked and have been tested in accordance with EN12566-3 making it fully compliant with UK building regulations, always make sure your new packaged sewage treatment plant has the CE marking.
The Diamond 6 with 620mm invert level is ideal for new builds and the replacement of existing tanks. The compact design of the units reduces installation and handling costs compared with other plants. The Diamond 6 gravity outlet reduces lifetime running costs as the final effluent gravitates out of the unit to a receiving drainage field or watercourse.
In Domestic applications serving population equivalents of up to 11 people the Diamond 11 can produce a final effluent meeting consent standards of 20mg/l Biological Oxygen Demand, 30mg/l Suspended Solids and 20mg/l Ammoniacal Nitrogen.
The Diamond 6 is also an ideal wastewater solution for many commercial applications such as; offices, factories, bed and breakfasts and other rural businesses. For help sizing your commercial property needs please click here.
Why use the Diamond Sewage Treatment Plant (STP)?
Does not require primary settlement tank of sewage where odours can occur.
- Process performance guaranteed for lifetime of the plant*
Efficient, continuous bacterial digestion process means the plant will continue to perform.
Simple design, reliable operation, minimal maintenance mean low running costs. And no moving parts in the unit.
- The units can be extended up to 1000mm at the factory giving much deeper inlet depths.
- Extensions of up to 460mm can easily added on site for the Diamonds 6, 11, 15 and 20.
- Fantastic value for money
Small air blower means low running costs.
Unlike other units that charge extra for a warning beacon. The DIAMOND Range comes complete with two warning beacons fitted to the all weather, air blower kiosk. One beacon alerts to the failure of the blower and another to a high water level so you will always be in control of the situation.
Allerton’s renowned customer service
All units come with a 25 year tank warranty, 2 year blower warranty and a lifetime process warranty*. Allerton offers a unique level of service drawing on 40 years of experience we can help with sizing your treatment plant, installation advice and offer a full installation service. Allerton offer servicing of the units and other manufacturers’ units so you can always rest assured your treatment plant is receiving the best care.