BIOROCK Independent Test Results

Effluent Quality of BIOROCK sewage treatment units

The effluent from a sewage treatment unit is measured in terms of the Biological Oxygen Demand (BOD), the Suspended Solids (SS) and the Ammonia (NH3).  It is expressed in the form BOD:SS:NH3 and is measured in mg/L

The Royal Commission Standard for effluent quality from sewage treatment units in the UK is 20:30:20 (BOD:SS:NH3). To understand these figures, septic tank effluent is around 120 :180 :80  and distilled water is 0:0:0, so obviously, the lower the figures the better the quality.

Performance of BIOROCK sewage treatment units

The BIOROCK sewage treatment unit has been tested to EN12566-3 2005 and the EN12566-7 2006 standard in the EU testing facility PIA in Aachen, Germany. Only sewage plants that have this standard are able to apply for the Discharge or Exemption Permit from the Environment Agency.

The table below summarises the results from the extensive 38 weeks independent EN testing on the BIOROCK 6 sewage treatment units. Essentially the independent testing showed that the BIOROCK sewage treatment unit produces a very high quality secondary effluent, far better than almost all aquatic systems.

The BIOROCK has just completed EN testing again using two stage septic tanks as the settlement tank.

BIOROCK sewage treatment units are cleared for sale in the UK as they have the EN12566-3 2005.  This more than satisfies the Environment Agency and Building Control requirements.