Description of Technology

Amphidrome and Integral Amphidrome:

The System is a Secondary Treatment Unit (STU) that utilizes a Submerged Attached-Growth Sequencing Bioreactor (SAGSB). The System may consist of an anoxic/equalization tank, which must comply with the design criteria set forth below, and either a single reactor which alternates between aerobic and anaerobic conditions, and a clear well or a single reactor installed in a clear well. Wastewater passes from the anoxic/equalization tank, through a granular biological filter and into the clear well. A pump is then used to reverse the flow back to the anoxic/equalization tank. This cycle is repeated multiple times and the effluent is discharged to the soil absorption system.

Amphidrome Process (nitrogen reduction):

The Amphidrome Process (the ‘System’) is installed in series between the building sewer and the soil absorption system (SAS) of a standard Title 5 system in a manner which neither intrudes on, replaces a component of, or adversely affects the operation of a Title 5 system constructed in accordance with 310 CMR 15.000, subject to the provisions of this Approval. The System is a biological wastewater treatment system that utilizes a Submerged Attached Growth Sequencing Bioreactor (SAGSB). The System consists of an anoxic/equalization tank, which must comply with the design criteria set forth below, a single reactor that alternates between aerobic and anaerobic conditions, and a clear well. Wastewater passes from the anoxic/equalization tank, through a granular biological filter and into the clear well. A pump is then used to reverse the flow back to the anoxic/equalization tank. This cycle is repeated multiple times and the effluent is discharged to the soil absorption system.

Massachusetts Technology Approvals

Approval Type	General	Remedial	Provisional	Pilot
Secondary Treatment
Nitrogen Removal Credit
Phosphorus Removal Credit

Please check the Title 5 Innovative/Alternative Technology Approval Letters webpage at Massachusetts DEP for the most up-to-date information.

Real-World Data

Test Center Reports & Data