Finally looked up your Aguagen ISI technology. Having AD first will definitely help the overall energy demand associated with treatment, of course, in a typical municipal application, this should include screening, grit removal and likely flow equalization upstream of the digesters, not to mention thickening, to keep the CAPEX and OPEX down.  Photosynthetic algae are very promising, however, some of the issues holding back the economics of full scale algae reactors is the efficient phase separation (removing the algae from the final effluent), the space requirements (footprint) for treating large flows, and a need for a light source to treat flows around the clock. There are other types of algae systems (phagotrophic for example), that are being introduced as well. Good luck with the Aquagen system, I believe algae will be a key technology for treatment of wastewater in the (hopefully near) future.

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Finally looked up your Aguagen ISI technology. Having AD first will definitely help the overall energy demand associated with treatment, of course, in a typical municipal application, this should include screening, grit removal and likely flow equalization upstream of the digesters, not to mention thickening, to keep the CAPEX and OPEX down. 

Photosynthetic algae are very promising, however, some of the issues holding back the economics of full scale algae reactors is the efficient phase separation (removing the algae from the final effluent), the space requirements (footprint) for treating large flows, and a need for a light source to treat flows around the clock. There are other types of algae systems (phagotrophic for example), that are being introduced as well. Good luck with the Aquagen system, I believe algae will be a key technology for treatment of wastewater in the (hopefully near) future.