Baswood’s patented AIMS (Aerobic/Anaerobic Integrated MediaSystem) maximizes biological treatment by utilizing our patentedDCAD (Dry Cycle Aerobic/Anaerobic Digestion) technology tomaintain maximum treatment efficiency.

Wastewater is fed sequentially through a series of mixed biologicalfixed-film reactors. Within each reactor are treatment zones thatare managed as trickling and submerged, allowing the technologyto maximize sequential biological treatment within a single tank.The process involves transferring the wastewater through a seriesof reactors containing biologically diverse biomass.

The large population of attached and diverse biomass is moreresistant to upsets that plague suspended growth systems.Treating wastewater in series, across multiple treatment zonesreduces hydraulic retention time (HRT) within the system.The attached growth biomass enclosed in vertical reactorsallows the Baswood system to require a smaller footprint.

Attachment of the biomass and solids to the fixed media inthe vessels exponentially increases solids retention time (SRT),improving the digestion rate within the system. Increased SRTis a significant contributor to Baswood’s low sludge yield, withthe patented DCAD technology further reducing secondary solids.

Patent: US 2006/0096916 A1

During the DCAD process, one of the reactors is taken off-line to prune the biomass. Removing the food source encourages endogenous decay of the biomass. Weight and volume measurements taken before and after the DCAD process show significant biomass reduction. In addition, enabling AIMS increased digestion capacity, the DCAD process maintains optimal hydraulic flow characteristics throughout the biomass-laden media. The system is designed so that the reactor vessels are cycled through the DCAD process without taking the system off-line. The units are internally self-buffering, which translates to avoided chemical costs.

Patent: US 7,144,507 B2

What particularly impresses Frost & Sullivan is that together, the processes are able to overcome the major challenges of chemical and energy use, sludge management, and lack of operation ease that currently hamper the industry”

– Sharath Thirumalai, research analyst
   Frost & Sullivan

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Wastewater treated

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