YKHC Greywater Recycling Project

Transcription

1 YKHC Greywater Recycling Project Office of Environmental Health & Engineering Alyssa L. Gustafson, REHS Field Environmental Health Officer & Greywater Project Lab Technician

2 Paimute Hooper Bay Chuloonawick Emmonak Alakanuk Nunam Iqua Scammon Bay Chevak Kotlik Billmore Slough Hamilton Y U K O N R I V E R Mountain Village Pitka s Point Yukon-Kuskokwim Health Corporation St. Mary s Andreafski Pilot Station Marshall Service Area Map Grayling Anvik Shageluk Holy Cross I N N O K O R I V E R McGrath Mekoryuk Russian Mission Ohogomuit Crooked Creek Georgetown Upper Kalskag Aniak Lower Chuathbaluk Stony River Newtok Kalskag Red Napaimute Sleetmute Devil Nunapitchuk K U S K O K W I M R I V E R Tununak Akiak Tuluksak Kasigluk Toksook Bay Atmautluak Bethel Umkumuit Akiachak Lime Village Nightmute Napakiak Kwethluk Oscarville Napaskiak Chefornak Kipnuk Tuntutuliak Eek Kongiganak Kwigillingok Quinhagak H O L I T N A R I V E R Goodnews Bay Platinum

3 Water, Water, Every-WHERE? >30 communities in rural Alaska lacking in-home piped water WHY? Decreasing Federal/State funding Unstable environmental conditions Small community = small customer base ($$) Piped communities with inactive service ~14% in YK Delta

4 Health Impacts Access to modern water and sanitation services is necessary to prevent epidemics of infectious disease in Alaska: Respiratory infections Infant hospitalizations Skin infections Gastrointestinal infections Oral health outcomes

5 Alternatives to Piped Water Service 52% in YK Service Area Self haul water + honey bucket Individual wells + septic tanks o Works great in upriver communities o Not practical in coastal communities Flush-Tank-Haul Systems o Extreme water rationing o High cost $$$ - O&M o Health impacts

6 The IDEA Greywater Recycling Increase the amount of water available for NON-CONSUMPTION purposes: Toilet Laundry Bathing Cleaning Greywater Definition: Reusable wastewater from residential, commercial and industrial bathroom sinks, bath tub shower drains, and clothes washing equipment drains 90% - water used in the home is for NON-CONSUMPTION purposes Quality vs. Quantity

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8 The IDEA Greywater Recycling Chronic issue Lack of piped water Negative health impacts We ve got an idea! What else do you need?

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10 Not Just Another Pipe Dream No funding from AK Water/Sewer Challenge Crowd-sourced funding campaign Indiegogo: Dump the Bucket Matching funds from: State of Alaska Rasmussen Foundation Bethel Community Services Foundation Nova Gold

11 Indiegogo Campaign (

12 Project Objectives Identify in-home greywater treatment technologies for use in rural AK Operate greywater recycling systems during pilot test period Monitor O&M requirements, water quality parameters, and costs associated with each treatment system Analyze data and share result with project partners

13 The IDEA Greywater Recycling Chronic issue negatively affecting health We ve got an idea! We ve got funding! TIME FOR TESTING AND EVEN MORE TESTING

14 Pilot Testing Two pilot testing phases 7 different treatment systems Daily dosing schedule Lab sampling schedule 56 lab tests/week/system Stress testing

15 Daily Dosing Design assumptions: Water use goal = 21 gal/person/day Household size = 6 people Expected sanitary events Showers Flushes Handwashing Rural AK home with small-haul water system

16 Daily Dosing Bathing Source Water* (2 x daily) Body wash Toothpaste Deodorant Shampoo Conditioner Lactic Acid Secondary effluent Bath cleaner Liquid handsoap Test dust Water *Based on NSF guidelines

17 Daily Dosing Laundry Source Water* (2 x weekly) Laundry detergent Secondary effluent Liquid fabric softener Test dust *Based on NSF guidelines Sodium Sulfate: Na 2 SO 4 Sodium Bicarbonate: NaHCO 3 Sodium Phosphate: Na 2 PO 4 Water

18 Generic Treatment System Generic Treatment Unit

19 Lab Sampling Biochemical oxygen demand (BOD) Carbonaceous BOD Total suspended solids ph Temperature Total Coliforms & E.coli Turbidity Ozone (system 1 only) Nitrate TKN Total phosphorous Chemical oxygen demand TOC Surfactants Fats, oils and grease

20 Challenges Operating a lab in Bethel: Daily dosing supplies Daily lab testing supplies Water deliveries Weather Non-standard US pipe sizes

21 Challenges Establishing flow rates FOAM Complicated treatment systems MANY, MANY calls to project managers

22 Project Accomplishments Designed and tested 7 types of treatment systems for potential in-home use 2 rounds of pilot testing completed No in-home testing planned at this time Continue sharing data & observations with project partners

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24 Alyssa Gustafson, REHS (907)