Sustainable Wells: Role of Well Rehabilitation and ... - Ohiowater.org

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Q/s14710131619222528313437Performance history:Well 1 specific capacity history4035302520151050Original SC @ 1100 gpmBegin wellcleaning periodSC @ 400-800 gpmSpecific capacity =Flow rate/unit drawdownYearsAttemptbig fix
Well efficiency and totalsystem optimization• Big drops in specific capacity (SC inprevious chart) = drop in wellefficiency (Ew – theoretical :observed pumping drawdown)• Drop in SC and Ew = higher systemhead = pump works harder• More kWh per unit water pumped =degraded wire : water ratio
Page 1 and 2: Sustainable Wells:Advances in Asset
Page 3 and 4: “From dust you come and todust yo
Page 5 and 6: Yet much is happening down there:
Page 7: Pump cannot pump water well
Page 12 and 13: Trend Analysis: gal per kWh$80 per
Page 14 and 15: Finding places that fit theregulato
Page 16 and 17: Asset management: A processdefiniti
Page 18 and 19: Count the cost: Can you affordto sk
Page 20 and 21: Weaknesses of A.M./O&M/RCM processe
Page 22 and 23: Methods of well rehabilitation:•
Page 24 and 25: Pre-cleaning well testing• Docume
Page 26 and 27: The step test: A quick, valuable te
Page 28 and 29: 1/Q/s0.090.080.070.06T-M well 6 ste
Page 30 and 31: The Need for Recordsand Databases1.
Page 32 and 33: Small system? Can‟t affordthis St
Page 34 and 35: Regulatory roles:• U.S. EPA very
Page 36 and 37: Questions?I‟ve gotsometime…Nowp

Sustainable Wells: Role of Well Rehabilitation and ... - Ohiowater.org

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