Small Community Wastewater Alternatives Section V Advanced Treatment

Advanced Treatment Process House sewer conveys sewage to aerobic treatment unit Aerobic treatment unit treats the sewage similar to a sewer plant (secondary treatment) Effluent pipe conveys treated effluent to absorption area Absorption area now serves primarily as a dispersal area for treated effluent Courtesy of OTN

Most Advanced Treatment Technologies Produce “Secondary” or Better Quality Effluent!

Advanced Treatment Pre-treatment of wastewater –Usually requires dosing –Often requires electric –Always requires maintenance Applicable to: –Difficult sites –Sensitive environments

 May be required by design or to “lift” wastewater to the absorption area  Delivers a calculated “dose” of wastewater  Allows for rest periods, promotes aerated and unsaturated soil conditions  Extends system life Dosing Options

Advanced Treatment Aerobic Treatment Units (ATU) Media Filters: –sand –textile –peat –foam Nutrient Reduction

Advanced Treatment Difficult Sites

Courtesy of Skaneateles Lake Demonstration Project

NSF Aerobic Treatment Unit (ATU)

Peat Filter Courtesy of OTN

Peat Filter Courtesy of OTN

Combination Peat / Textile Courtesy of OTN

AdvanTex Packed Bed Filter

AdvanTex Courtesy of OTN

Textile Sheets Courtesy of Orenco

20x more surface area than sand GravelSand Courtesy of Orenco

Residential Installation Courtesy of OTN

Courtesy of Skaneateles Lake Demonstration Project

Media Filter with Bottomless Sand Filter Courtesy of OTN

Media Filter with Bottomless Sand Filter Courtesy of OTN

Foam Courtesy of OTN

The more advanced the treatment technology, the greater attention required to assure proper performance.