CARBON DIVERSION: BIOLOGICAL ENHANCED PRIMARY TREATMENT Captivator
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1 CARBON DIVERSION: BIOLOGICAL ENHANCED PRIMARY TREATMENT Captivator September 2016 WEFTEC
2 SPEAKER Nathan Antonneau, P.E. Business Development for New Technologies Western US & Canada BS & MS in Civil / Environmental Engineering (University of Wisconsin) 15 years in the Water Industry; 5 yrs environmental consulting & 10 years with Evoqua Technical Presentations; Process Design; Benchtesting & Piloting PERSONAL: Wife & 2 Girls, live in Phoenix area INTERESTING FACT: Grandpa 100% Blackfoot Indian, he and four brothers served in WWII. Great Uncle (Florian Stamm) survived USS Indianapolis disaster. Page 2
3 PRESENTATION OVERVIEW Problem Solution Evidence Opportunities Page 3
4 PROBLEM Page 4
5 SOLUTION CARBON DIVERSION / ENHANCED PRIMARY TREATMENT PRIMARY TREATMENT CAN REMOVE REMOVAL MECHANISM Conventional Particulate/settleable Sedimentation Chemically Enhanced Mechanical (Screens & Filters) Biological (A/B Process) Biological (Captivator ) Particulate/settleable Colloidal Particulate larger than filtering media Particulate Colloidal Soluble Particulate Colloidal Soluble Sedimentation with chemical coagulation and flocculation Physical barrier. Mechanical separation Biosorption/Bioflocculation and sedimentation Biosorption/Bioflocculation and flotation Page 5
6 SOLUTION - BIOLOGICALLY ENHANCED PRIMARY TREATMENT (BEPT) & FLOTATION (CAPTIVATOR) Page 6
7 SOLUTION BEPT, WHAT IT CAN DO 70-80% TSS removal 50-60% BOD removal Influent Raw WW WAS 60% pbod (70-80%) 40% sbod (25-30%) 4-6% sludge No chemicals Thickened WAS+PS To Aeration Page 7
8 SOLUTION DAF EXPLAINED Hydraulically efficient 5X smaller footprint than primary clarifiers Rapid transport of solids to digester Thickener (coflotation) 4-6% solids without chemical NO need for additional thickeners Removes settleable solids Less grit to digesters Page 8
9 30 to 65% Biogas generation improvement over conventional PC Page 9
10 EVIDENCE - AGUA NUEVA WRF Award winning DBO commissioned in December 2013 (CH2M) Captivator System BEPT (Captivator ) selected because of the benefits of reducing overall volume (concrete / covers / odor control / aeration) Saved ~$75M over previous estimates Disinfection Clarifiers Disc Filters Activated Sludge Page 10
11 EVIDENCE - AGUA NUEVA WRF Clarifiers Disc Filters Activated Sludge Average sbod removed 29% Page 11
12 EVIDENCE - HONOULIULI DEMONSTRATION Contact DAF Pressurization & Controls Page 12
13 EVIDENCE - HONOULIULI METHANE POTENTIAL Page 13
14 OPPORTUNITIES MUST HAVE: Waste activated sludge NICE TO HAVE: Anaerobic digesters Rectangular primaries (if retrofitting) Energy recovery systems (existing or planned) Onsite utilization (heating & drying) Supplement natural gas line Electricity generation (CoGen) Compressed fuels (CRG) GOOD CANDIDATES: Influent flow > 3 MGD Plants undergoing biosolids / energy recovery upgrades CEPT facilities (existing or planned) Converting from fixed film or pure oxygen to activated sludge High energy costs (>$0.08 KW/h) Plant expansions or upgrades, footprint limited Page 14
15 THANK YOU FOR YOUR ATTENTION Nathan Antonneau, P.E. (414) Page 15
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