State University of New York Institute of Technology
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Wastewater treatment without electricity (BioRock Technology)

How does the BIOROCK Sewage Treatment Plant Work  

The BIOROCK sewage treatment system is designed to discharge direct to a watercourse.

The raw sewage first enters a Settlement tank which separates the solids from the liquid part of the effluent.  This tank digests most of the solids anaerobically and only requires emptying every 3 to 4 years.

The Primary Effluent then enters the BIOROCK Biofilter sewage treatment plant which uses layers of natural fiber material in contact with air to treat the effluent in exactly the same way as Nature treats effluent in the soil or on the margins of a pond.  Just as the soil filters effluent so efficiently, without electricity, so does the BIOROCK.

The suspended solids are trapped in the natural stone fibre matrix in the first and second filter stages.  Bacteria grow within the matrix and digest the organic material.  The purified clean water trickles through to the bottom where it exits the sewage plant - SIMPLE.

Instead of using electricity-guzzling compressors to provide the air, the BIOROCK biofilter sewage treatment plant utilizes the wind and natural 'chimney-draft' to pull the air through the plant with no electricity required.

Plant sizes are 6, 10 and 15 persons and are good for domestic wastewater treatment

Some advantages of this system include:

-          No use of electricity

-          No moving parts or spare parts required.

-          Low carbon footprint

-          It’s a silent system.

-          Low running cost.


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