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White Knight™ Knight Treatment Systems

Description of Technology

Descriptions for proprietary technologies are from the Massachusetts DEP Approval Letters for the technology.

The System, for design flows less than 2,000 GPD, is typically installed in an existing septic tank (or a new septic tank designed in accordance with 310 CMR 15.223 through 15.228) with an effluent tee filter. The System consists of a White Knight Microbial Inoculator/Generator (MIG) with fine bubble diffuser installed in the first compartment of the septic tank, a bacterial inoculant packet placed into the tank with the MIG, and a linear air pump installed externally to the septic tank and operated on a continuous basis capable of providing 1.5 to 2.5 cfm of air to the MIG diffuser. The System converts the septic tank into a bioreactor (or Treatment Tank) to treat and prepare residential strength wastewater for discharge to a soil absorption system (or leach field). The treated effluent is discharged to the existing soil absorption system.

A microbial culture is established in the septic tank or Treatment Tank and maintained using the aeration device and the bacterial source. The aerator mixes the contents of the septic tank with the bacteria and aerates the wastewater. The System’s biomass reduces both the biochemical oxygen demand (BOD5) and the total suspended solids (TSS) concentration in the septic tank effluent. The effluent from the septic tank or Treatment Tank contains dissolved oxygen and System generated bacteria that when discharged to the soil absorption system (SAS) act to reduce the thickness of the biomat improving infiltrative capacity.

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.

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