H.e.r.c Products Inc · OTC:HERC
H.e.r.c Products — Technical Presentation
30 slides from H.e.r.c Products's technical presentation
Slide 1: Chemical Well Rehabilitation for the 21st Century
CHEMICAL WELL REHABILITATION FOR THE 21ST CENTURY By James E. Farmerie Manager Municipal Group HERC Products, Inc.
Slide 2: Major Issues
MAJOR ISSUES z Water Quality z Water Quantity
Slide 3: Anatomy of a Groundwater Well
ANATOMY OF A GROUNDWATER WELL Pump Piping and Bowl Assembly Well Casing Inlets Water Bearing Formation
Slide 4: Common Foulants
COMMON FOULANTS z Silts and Clay z Mineral Precipitates Areas of z Biological Concern Areas of Concern Areas of Reduce Capacity Concern Increase Costs
Slide 5: Silts and Clays
SILTS and CLAYS z Sediment load in water z Pumps on and off Block Pores in Aquifer
Slide 6: Mineral Precipitates
MINERAL PRECIPTATES z Increase in CO2 reduces solubility Areas of z Carbonates crystallize Concern Areas of Accumulate in Concern perforations and void spaces
Slide 7: Biological Fouling
BIOLOGICAL FOULING z Intakes Area -- Nutrients In, Waste Out Area of Concern
Slide 8: Biological Fouling
BIOLOGICAL FOULING z Secrete polysaccharide zoogleal mass Areas of z Adheres to surface Concern z Coating protects bacteria z Formation of coating Areas of Concern accelerates when bacteria stressed
Slide 9: Biological Fouling
BIOLOGICAL FOULING z Entrance velocities z Water level fluctuations z Shutdowns z Decrease nutrient supply
Slide 10: Biological Fouling
BIOLOGICAL FOULING z Leaking pump lubricants z Strong oxidizing chemicals z Contaminants z Reinjections
Slide 11: Biological Fouling
BIOLOGICAL FOULING z Iron reducing bacteria – Ferric iron compounds z Sulfate reducing bacteria – Iron sulfides – Off-color, smelly water, floating particles
Slide 12: Biological Fouling
BIOLOGICAL FOULING z E-coli z Gravel pack z Formation face Area of Concern
Slide 13: Old Methods
OLD METHODS z Mechanical Cleaning z Acid z Chlorine
Slide 14: Mechanical Cleaning
MECHANICAL CLEANING z Labor intensive z Pull pump Areas of z Surge blocks, Concern scratchers, explosives, jetting devices not effective on screen or Areas of Concern outside strata
Slide 15: Acids
ACIDS z Not selective z Destroy equipment z Need to remain active for long periods to dissolve deposits and penetrate strata
Slide 16: Chlorine
CHLORINE z 1000 PPM z Strong oxidizing agent z Can’t penetrate thick biofilm z Stimulates polysaccharide production z Potential of forming THMs
Slide 17: Criteria to Be Effective
CRITERIA TO BE EFFECTIVE z Sufficient strength and contact time z Kill bacteria Areas of Concern z Remove slime z Dissolve encrustation z Hold in suspension Areas of Areas of Concern z ANSI/NSF Standard Concern 60 certified
Slide 18: Key to Success
KEY TO SUCCESS z Disperse and hold insolubles in suspension z Penetrating and wetting agent z Control reaction with inhibitor
Slide 19: Key to Success
KEY TO SUCCESS z No hazardous ingredients z Does not form hazardous compounds z Free of heavy metals
Slide 20: Well-Klean
WELL-KLEAN z ANSI/NSF Standard 60 Certified for use in Potable Water Systems z Green Cross Certified Biodegradable z Inhibited Acid z Patented stoichiometric soap z Penetrates, dissolves, disperses deposits, and inhibits attack on the system metals
Slide 21: Well-Klean
WELL-KLEAN z Effective for scale z Effective for deposit precipitants z Effective for microfilm encrustation z Up to 15 times faster than HCl alone
Slide 22: Case History: Lake Havasu City - Well #4
CASE HISTORY Lake Havasu City - Well # 4 z 20-inch diameter casing z 493 feet depth z Biomass tubercles z Calcium carbonate scale z Iron & manganese deposits
Slide 23: Lake Havasu City, AZ
Lake Havasu City, AZ z Chemically rehabilitate with Well-Klean z GOAL: Clean Pump & Bowl Assembly, well casing inlets, and adjacent formations, without pulling the column and bowl assembly out of the casing
Slide 24: Lake Havasu City, AZ
Lake Havasu City, AZ z Gravity feed Well-Klean down air vents z Surge the pump every 4 hours for 48 hours z Monitor pH as it rises until it levels off z Pump contents of well to waste z Pump 12 times the well volume to waste z Well-Klean is biodegradable and can be pumped with special handling to wa
Slide 25: Lake Havasu City, AZ
Lake Havasu City, AZ z BEFORE CLEANING z AFTER CLEANING z Flow in gpm - 625 z Flow in gpm - 850 z Static Level in Ft - 34 z Static Level in Ft - 17 z Pumping Level - 80 z Pumping Level - 56 z Power Cost - $26.34 z Power Cost - $17.49 per Acre Ft of Water per Acre Ft of water
Slide 26: Lake Havasu City, AZ
Lake Havasu City, AZ z RESULTS OF CLEANING z Flow Increased 36% z Power Cost Reduced 33.5% z Return on Investment in 104 days
Slide 27: Case History: Paloma Ranch - Well #31
CASE HISTORY Paloma Ranch - Well # 31 z 24-inch diameter casing z 340 foot depth z Pumping level - 225 ft z Static level - 155 ft z Flow - 1765 gpm z Power Cost - $22.40/Acre ft of water
Slide 28: Paloma Ranch
Paloma Ranch z Calculations for 12.5 % WK solution z Well Volume x 12.5% = Well-Klean Gal. z π radius2 x depth of water in the column x 7.5 gal/ft3 x 12.5% = Well-Klean Gallons z 3.14 (12/12 x 12/12) x (340-155) x 7.5 x 0.125 = 545 gallons of Well-Klean
Slide 29: Paloma Ranch
Paloma Ranch z Flow increased by 17.3% to 2070 gpm z Power Cost decreased by 17.9% to $18.39/Acre Foot of Water
Slide 30: Key to Success
KEY TO SUCCESS z Address same problems above ground z Inhibitors provide worry-free operations throughout distribution system