Challenges in Municipal Water Treatment and the MIOX Solution Part 1 of 3: Overview Surface & Groundwater Treatment Tuesday, December 11 th at 10AM CST
Agenda for Part 1 Brief Introduction of MIOX General system and chemistry information Groundwater Treatment Surface Water Treatment Case Studies (time allowing) Please note Part 1 is intended to be a general overview only, Parts 2 and 3 will go into more detail on applications
The leader in On-Demand Disinfection Chemistry 18 years history continuous innovation in electrolytic cell design Only company able to produce multiple oxidant based products Technology company 27 patents issued; 21 patents pending 2,000+ units installed across 30+ countries treating 6 billion gallons/day Municipal Water Treatment Food & Beverage Industrial & Commercial Oil and Gas
What is On-Site Chemical Generation? SALTS + ON-SITE WATER + POWER = CUSTOM CHEMICAL Specialty chemistry generated on site, on demand Replaces multiple delivered chemicals Ability to create unique product characteristics
MIOX Process
Two System Configurations Include: Basic Bleach Generators o o o Nominally 0.6 0.8% concentration Very efficient salt and energy conversion efficiencies Good general purpose biocide Mixed Oxidant Generators o o o Uses slightly more power to make stronger oxidant Great biopenetrant for better biofilm and organism control Also has stronger oxidation power for certain applications
MIOX On-Site Generators Revolutionary self-cleaning generator in the industry Patented self-adjusting flow control to accommodate wide pressure variations Direct link to DCS, ORP, SCADA Air-cooled power supply- Allows hotter feed water to cell Reduces chiller requirements and associated need for pressure boost Skid mounted Vault
Why On-Demand Chemistry? Sodium Hypochlorite Safe Less Hazardous Chlorine Dioxide Mixed Oxidant (0.4% chlorine) Sodium Hypochlorite (0.8% chlorine) 2 0 OX 1 3 0 OX 4 NFPA Rating Health = 1 Flammability = 0 Instability = 0 1 0 0 Delivering bulk bleach Reduced Carbon Footprint Salt - chlorine equivalent MIOX Proprietary & Confidential Do Not Distribute
Groundwater Treatment General and Advanced Treatment
Typical Issues in Groundwater Treatment Iron (Fe) removal o SMCL: 0.3 mg/l Manganese (Mn) removal o SMCL: 0.05 mg/l Hydrogen Sulfide reduction o Odor control Ammonia removal
Mixed Oxidants Tend to Speed or Extend Oxidation Reactions Iron and Manganese Removal Hydrogen Sulfide Removal Can be used to oxidize iron and manganese Effective for manganese when used with Greensand Plus filter Eliminates use of potassium permanganate o Saves cost o Safer Drives reaction to soluble form o H 2 S to elemental sulfur o Sulfur to H 2 SO 4 Eliminate odor easily with little or no additional equipment o No detention tank o No filters o Maintain head from wells to distribution
Iron Oxidation and Removal Hypochlorite and Mixed Oxidants will oxidize iron Must be filtered afterward to remove formed solids MIOX System Dosing for Fe Oxidation Dosing for Residual Well Pump To Storage Tanks/Dist. To Backwash Waste Media Filters (Pressure or Gravity)
Iron and Manganese Oxidation and Removal Mixed Oxidants will oxidize manganese faster than hypo Greensand media helps catalyze for improved removal MIOX System Dosing for Fe and Mn Oxidation Dosing for Residual Well Pump To Storage Tanks/Dist. To Backwash Waste Media Filters (Pressure or Gravity) Greensand Media
Traditional hydrogen sulfide removal can be onerous and require significant capital upgrades Option 1: Lower ph, degassify, raise ph Option 2: Use Ozone to drive reaction to sulfuric acid (soluble, non-odorous) Option 3: Degas (optional), add bleach, wait 1-2 hours, filter sulfur that is formed Option 4: Dose Mixed Oxidants drive reaction to sulfuric acid
Traditional hydrogen sulfide removal can be onerous and require significant capital upgrades Remove as much as you can for free Degassifier Hypochlorite System Filters remove elemental sulfur Well Pump Detention Tank (1 2 hours) Portion forms elemental sulfur Media Filters (Pressure or Gravity) To Storage Tanks/Dist.
Mixed Oxidants simplify process and reduces required plant changes Mixed Oxidants drive reaction to sulfuric acid, which is soluble Well Pump Mixed Oxidant dosing for H2S and chlorine residual To Storage Tanks/Dist.
Ammonia removal can be accomplished in a few ways Removal using Biologically Active Filters o o Effective but can require the addition of food source Can be a public relations challenge Nanofiltration/Reverse Osmosis o o Operating cost can be high Disposal of concentrate stream can be a challenge Breakpoint chlorination to convert to nitrogen o o Can require high volume of chlorine Can be challenge to control
Mixed Oxidant Solution Offers Superior Ammonia Removal Mixed Oxidants can be dosed closer to stoichiometric ratio o 8 10 ppm FAC per ppm of ammonia o Regular bleach is typically dosed at 15 ppm FAC per ppm ammonia Reduces chemical consumption by nearly 50% Reduces chemical cost by nearly 50% Cumulative Savings (USD) ROI less than 2 years ROI Bulk Hypo vs. MOS For Ammonia Removal (2 MGD Well Source with 0.9 ppm Ammonia) $1,500,000 $1,000,000 $500,000 $- 0 5 10 15 20 $(500,000) Years
Dosage Cheat Sheet for Groundwater Treatment ITEM CHLORINE DEMAND (Dose Required mg to mg) Stochiometric Conservative for Estimating Iron 0.635 0.7 Manganese 1.29 1.5 H 2 S as Sulfide to (S) 2.22 2.5 H 2 S as Sulfide to (SO 4 ) 8.85 9 Ammonia as NH 3 6.3 10 Ammonia as NH 3 -N 7.6 10 Don t forget to add the desired residual to distribution system when sizing the overall system!
Surface Water Treatment Enhancing Performance and Safety
Typical Issues in Surface Water Treatment Ammonia Removal Disinfection byproduct formation o THMs and HAA5s Operation expense optimization o o Improving enhanced coagulation Reduction of coagulant usage
Disinfection By-Product Formation Reduction DBP troubleshooting can help identify way forward Surface Source Mix/Floc/Clar Filtration Clearwell Distribution
Disinfection By-Product Formation Reduction DBP troubleshooting can help identify way forward If High DBPs are measured prior to Distribution System, Improved pretreatment may help Surface Source Mix/Floc/Clar Filtration Clearwell Distribution
Disinfection By-Product Formation Reduction DBP troubleshooting can help identify way forward If High DBPs are forming in Dist. System, consider Mixed Oxidants Surface Source Mix/Floc/Clar Filtration Clearwell Distribution
Where MIOX Fits In Typical Drinking Water Treatment Facility Layout 1 2 3 1. Pre-oxidation 2. Into Flash Mix 3. Final Disinfection 4
Microflocculation Effect May Improve Organic Matter Reduction and Reduce Coagulant Cost Mixed Oxidant induced effect can improve removal and settleability at a lower effective dose Enhance DOC removal can lead to lower formation protential CONTROL (No MOS) Alum Dose 1 2 3 4 5 6 Optima TEST (MOS) Alum Dose -1 0 1 2 3 4 UNDERDOSE OVERDOSE
Pre-Oxidation: Reduce Alum by 40% Water obtained from Rio Grande, plant capacity is 8.2 MGD All plants showed evidence that MOS could be used for an effective pre-oxidation and reducing the use of Alum. Turbidity was reduced using less Aqualon when used with Mixed Oxidant Solution 3 2.5 Turbidity (NTU) 2 1.5 1 aqualum MOS/aqualum 0.5 0 35 40 45 50 55 60 Aqualon Dose (ppm)
ROI Reduce Alum Dose with Pre-Oxidation
If DBPs are Forming in the Distribution System, May Indicate Presence of Biofilm Biofilm in distribution piping can provide additional carbon source Additional carbon can create more DBPs Will usually also notice significant consumption of chlorine residual The use of Mixed Oxidants can reduce or eliminate biofilm, reducing DBP formation and reducing chlorine demand in system
Mixed Oxidant Solution Helps Remove Biofilm CASE STUDY Spa in Japan previously using Bulk Hypochlorite 1.5 mg/l had Legionella cases. In 5 hours of Mixed Oxidant solution biofilm started sloughing BEFORE MIOX 22 days AFTER MIOX CASE STUDY A city in Texas was using Gas Chlorine where brown biofilm slime on pipes in distribution system commonly noticed. BEFORE MIOX 1 Year AFTER MIOX Extensive biofilm Legionella CFU >5 Dose: 1.5 mg/l Hypo Residual: 0.2 mg/l Biofilm eliminated No bacterial hits Dose: 0.6 mg/l Hypo Residual: 0.4 mg/l Distance from Treatment Plant: 200 feet Distance from Treatment Plant: 1/2 mile
Mixed Oxidant Solution Reduces DPBs Reduced TTHMs by 35% Stripped biofilm in the pipelines Reduced required dosing Eliminated organic precursors in the water Reduced Formation of TTHMs 140 120 100 80 Chlorine Gas (Q2 '05 - Q1 '06) Mixed Oxidants (Q2 '06 - Q1 '07) 60 40 20 0 Q2 Q3 Q4 Q1 Coto Laurel, Puerto Rico
Other Applications and Final Disinfection
Other Applications and Final Disinfection Membrane cleaning to improve CIP interval and membrane life Final Disinfection the tried and true traditional application in drinking water
Mixed Oxidant Solution Extends UF Life Martindale, Texas Municipal potable water treatment Running SAL 80 since 2000 Primary drivers: safety, algae reduction and consistent chlorine residual MOS very compatible with membranes 10 year filter life 2x longer than 5 years expected lifetime Clean filters require less cleaning cycles, less downtime
ROI Replace Hypochlorite for Final Disinfection
1-888-MIOX H2O (1-888-646-9426) www.miox.com
MIOX for Municipal Water Project Profiles
Tridell, UT Tridell-Lapoint Water District 11500 N. 8000 E. Tridell, UT 84076 System: RIO M1 Total Capacity: 60lbs/FAC Installation Date: Feb 2009
Cody, WY Shoshone Municipal Water Joint Powers Board 50 Agua Via Cody, WY 82414 System: RIO H2-2 Total Capacity: 400lbs/FAC Installation Date: Mar 2009
Ontario, CA City of Ontario 966 North Cucamonga Ontario, CA 91764 System: RIO H1-2 Total Capacity: 200lbs/FAC Installation Date: Mar 2009
Las Vegas, NM City of Las Vegas 1700 North Grand Ave. Las Vegas, NM 87701 System: RIO M2-2 Total Capacity: 240lbs/FAC Installation Date: Jan 2009
Cantonment, FL Emerald Coast Utilities Authority 2980 Old Chemstrand Road Cantonment, FL 32533 System: RIO H5-5 Total Capacity: 2,500lbs/FAC Installation Date: Sep 2007
Miramar Beach, FL South Walton Utility Co., Inc 369 Miramar Beach Miramar Beach, FL 32550 System: RIO M4-2 Total Capacity: 480lbs/FAC Installation Date: Apr 2008
Marshall, MO City of Marshall 765 West North Marshall, MO 65340 System: RIO H5-2 Total Capacity: 1,000lbs/FAC Installation Date: Jul 2008
Lawrenceville, VA Town of Lawrenceville 400 N. Main St. Lawrenceville, VA 23868 System: RIO M2-2 Total Capacity: 240lbs/FAC Installation Date: Mar 2009
1-888-MIOX H2O (1-888-646-9426) www.miox.com