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Small Community Wastewater Alternatives. Section V Advanced Treatment. Courtesy of OTN. Advanced Treatment Process. House sewer conveys sewage to aerobic treatment unit Aerobic treatment unit treats the sewage similar to a sewer plant (secondary treatment)
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Small Community Wastewater Alternatives Section V Advanced Treatment
Courtesy of OTN 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
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
Dosing Options • 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
Advanced Treatment • Aerobic Treatment Units (ATU) • Media Filters: • sand • textile • peat • foam • Nutrient Reduction
Advanced Treatment • Difficult Sites
Courtesy of OTN Peat Filter
Courtesy of OTN Peat Filter
Courtesy of OTN Combination Peat / Textile
Courtesy of OTN AdvanTex
Courtesy of Orenco Textile Sheets
Sand Gravel Courtesy of Orenco 20x more surface area than sand
Courtesy of OTN Residential Installation
Courtesy of OTN Media Filter with Bottomless Sand Filter
Courtesy of OTN Media Filter with Bottomless Sand Filter
Courtesy of OTN Foam
The more advanced the treatment technology, the greater attention required to assure proper performance.