7/31/2019 Comparison of Treated Effluent from 4 different onsite systems

1/2

recode Efuent Plumes from 4 Different Onsite SystemsComparing Nitrogen and Phosphorous Removal

100% Compared to Average Septic System Euent

20%

60%

20% Septic with Urine Diversion18% Dry Toilet with Septic for Washwater16% Septic with Sand Filter & Wood Chip Filter

Nitrogen in Euent

Septic Systemwith

Soil Inltration$7,000

Dry Toilet and SepticSystem for Graywater

$1,200-6,000

Septic Tankfollowed by Sand

Filter & Wood ChipFilter$25,000

Urine Diversion

and Septic Systemretrot: $3,000 to 6,000

available atwww.recodeoregon.org/resourcesinfographic by Molly Danielsson

7/31/2019 Comparison of Treated Effluent from 4 different onsite systems

2/2

recode Efuent Plumes from 4 Different Onsite SystemsCitationsUSEPA 2002: Onsite Treatment Systems Manual EPA/625/R-00/008

Pie Charts, sources of nutrients Figure 3-7Inltration based on 10-40% removal N, 85-95% removal of P, 90-98% removal BOD5, Figure 3-17Septic Efuent, Figure 3-19

Septic Tank with Dry Composting Toilet82.1% of total Nitrogen is from toilet: USEPA 2002. 17.9% x 24 to 90 = 4.3 to 16.11 mg/L N

Septic Tank with Sand and Wood Chip Filter10 mg/L of N: Oakley, Stewart, Arthur Gold, Autumn J Oczkowski. Nitrogen control through decentralized wastewater treatment: Process perfomance and alternativemanagement strategies. Ecological Engineering. 36(11):1520-1531. November 2010. p 1

Septic Tank with Urine Diversion80% of N and 50% of P from domestic wastewater at treatment plants is contained in urine. Larsen, T.A., Gujer, W., 1996. Separate management of anthropogenic nutrientsolutions (human urine). Water Science and Technology 34 (34), 8794.

Sand Filter and Wood Chip Filter based on Nitrex TM System. Lombardo, Pio. Phone Interview. May 2, 2012.

Dry Toilet based off of VeraMiljoes Carousel dry toilet. www.vera.no

Urine Diversion retrot based off Swedish prices as of 2006 excluding 25% tax. Avloppsguiden.se