Sewage Treatment Plant Systems

Types of wastewater treatment system processes

IMPORTANT - Comparison of different sewage treatment system EN 12566-3 Test Results - read this first before you buy to see if your treatment plant choice is the CLEANEST, or did it only just scrape through the test.


Non-Electric Filter Plants

Three Stage Sewage Plants

Activated Sludge Plants Septic Tank Conversion Units

FilterPod non-electric sewage treatment plant

Falcon sewage treatment plant

Vortex sewage treatment plant

BioKube Venus septic tank conversion 





Some of these wastewater systems can also be above ground and mobile  installations if required


Can be installed either below or above ground


Click here for the steps to take for a successful, legal installation, here for an explanation of the wastewater treatment process, and here for wastewater treatment systems for flood plains


FILTERPOD non-electric sewage treatment plants are our own design.. They use non-degradable RDX filter media.

1 to 3 year emptying

No electricity used

Can be solar powered if required - the only solar powered sewage treatment plant in the world.

FilterPod non-electric sewage treatment plant



 VALANCE VES treatment systems cater for 50 to 250 persons. They are useful for campsites, golf clubs, etc. as they are very competitively priced, superb quality wastewater treatment systems.

3 monthly to annual emptying interval.

We have never had any problems with these systems.

Ves 9 sewage system tank

FALCON™ treatment plants are submerged aerated media systems. They range from 6 to 300 person wastewater treatment systems.

6 to18 month average emptying intervals.

Very clean effluent 11BOD:16SS:7NH4 standard

OK for holiday homes and underloading situations.


BIOCLEAN sewage plants are an aeration sewage treatment process without media. They range from 1 to 41 person


Very Clean effluent.

OK for holiday homes.

OK for FRANCE - they have the French EN Certification.

inside a Bioclean 21

DISC plants (rotating biological contactors or RBC's)) are the original package wastewater treatment systems. RBC's are now made by only a few companies as technology has changed.

They range from 6 to 350 person systems. 3 monthly to annual emptying intervals.

Best known brand is Klargester.

RBC Sewage treatment unit


VORTEX™ sewage treatment plants produce some of the cleanest effluent of them all and have an unbeatable ammonia reduction. They have an EN 12566-3 test effluent standard of an amazing 0.4mg/L ammoniacal nitrogen, which is over 40 times lower than the Environment Agency requirements. The VORTEX™ treatment process reduces pollutants by up to 98.9%.

The VORTEX™ only uses  from 24 watts/hour (£25/year at 12p/Kw) and is the most energy-efficient electric plant on the market.Click to find out Why the VORTEX™ is so energy-efficient.

The VORTEX™ also has an internal sampling point and does not need a separate sampling chamber, reducing your costs by a further £300.

The VORTEX™ is the ONLY system suitable for sewage treatment for flood plain sites.

With a price of only £1730 plus VAT, delivered for a 6 person plant, they are unbeatable value.

They range from 6 to 30 persons.

Annual emptying interval.

Superb Effluent Standard 9BOD : 16S.S . :0.4NH4

Vortex wastewater treatment system 6 person



BIOKUBE septic tank conversion treatment unit produces a very high standard of effluent, but is, like the Balmoral SBR, a sequencing batch reactor. The domestic range extends up to 30 persons and the units above 10 persons require a pumping station to be added to the system.

Annual emptying

Guaranteed sewage effluent quality for the treatment process

Ideal for strict discharge standards

Biocube Mars treatment plant image



All makes of sewage treatment plants, including Klargester, are serviced by Sapphire Environmental Ltd.

Septic Tank or Sewage Treatment System?

If you are considering using a septic tank instead of a sewage treatment unit, make sure that the ground is suitable for a foul water soakaway as over 50% of the UK fails either the Soakaway Trial Site Assessment Hole or Percolation Tests. If your site passes these tests, then, in our opinion, the best septic tank on the market at the moment is the Traditional Design Low Profile Crystal Septic Tank.

OASIS Rainwater Harvesting Systems - Also made in Yorkshire by Water Technology Engineering Ltd.