Innovative Water Processing Solutions By Water Quality Management - - PowerPoint PPT Presentation

Innovative Water Processing Solutions By Water Quality Management Professionals

• Introduction to WaterTectonics
• Electrocoagulation Technology
• Case Studies (3 Industrial, 1 Remediation)
• Conclusions

• Established in 1999
• Located in Everett, Washington
• 60+ Employees
• Design, manufacture, deploy, and service water

treatment systems internationally

• We offer a broad portfolio of technologies and

services and specialize in electrocoagulation and electrochemical treatment systems

• Our technologies are licensed by Fortune 500

partners and used in the natural gas industry for treating flowback water

• Electrocoagulation (or EC) is a non-chemical water

treatment process

• Electric current is applied across metal plates which

drives metallic ions into solution

• These metallic ions work as active coagulants and

react with contaminants

• Gas generated at the cathode assists in separating

the flocculated particles (electro-flotation)

Untreated Influent Active Coagulation

Influent Post EC Post Filtration

Electrocoagulation

Typical EC Target Contaminants

Electrocoagulation makes particles larger…

Traditional chemical treatment uses counter ions to deliver coagulants Electrocoagulation drives zero-valent metal into solution as metallic ions FeCl3 (aq) ↔ Fe3+ (aq) + 3Cl-1 (aq) Al2(SO4)3 ↔ 2 Al3+ + 3(SO4)2- (aq) Fe0 → Fe2+ + 2e- Al0 → Al3+ + 3e-  Electro-flotation (H2)  Reduced solids  Free OH- help facilitate flocs  No chemical handling

• The WaveIonics system is WaterTectonics’ unique

approach to electrocoagulation

• Packaged mobile systems from 50-1000gpm
• Turnkey plant systems up to 15,000+gpm
• Packaged, scalable, and high-flow designs
• Automated operations with touch screen controls,

web-based remote monitoring, and alert systems

• Awarded GULD for construction stormwater in

2010; GULD for municipal stormwater pending

• Location: Freeland, Washington
• Year Installed: 2008
• Permit: Individual NPDES
• Discharge Location: Puget Sound
• Site Size: 6 acres
• Site Activities: Fabrication, repair, pressure

washing, abrasive blasting, painting

• System: 300gpm WaveIonics System + Carbon

Polish

Units Historical Influent Average* Historical Influent Maximum* Permit Limit WaveIonics Effluent** Turbidity NTU

• 5

2.31 Copper, Total µg/L 109 543 5.8 2.4 Zinc, Total µg/L 641 2980 95.1 6.4 Lead, Total µg/L 12 40 14 Non-Detect Chromium, Total µg/L 11 61 50 1.9 Oil & Grease mg/L 1.7 7 5 Non-Detect

*Data shown collected from Washington State Department of Ecology Fact Sheet **Data shown reflects n=4 average of 10/1/10 to 07/01/11 DMR submittal to Washington State Department of Ecology

20 40 60 80 100 120 Historic 4/10 7/10 10/10 1/11 4/11 7/11 10/11 1/12 4/12 7/12 Total Copper (µg/L) Quarter

Average Value = 2.7µg/L On only two charges of carbon media

• When dealing with low ppb level dissolved

copper, determine if it is ionic or if it has formed an organo-copper complex

• By removing most of the turbidity and heavy

metals with the EC system, the carbon polishing system performed extremely well and was cost efficient

• Location: Kent, Washington
• Year Installed: 2010
• Permit: ISWGP
• Discharge Location: Spring Brook Creek
• Site Size: 7.5 acres
• Site Activities: Raw materials storage, truck traffic,

large zinc roof contributes most of zinc

• System: 300gpm WaveIonics system

100 200 300 400 500 600 700 800 Typical Influent 4/10 7/10 10/10 1/11 4/11 7/11 10/11 4/12 7/12 Total Zinc (µg/L) Quarter

Average Value = 69.9µg/L

• When working with active treatment systems,

treat them like cars – when they’ve been sitting around unused for awhile, give them a chance to warm up first (and make sure to change the oil!)

• Fall leaves/pine needles can clog up pipes – make

sure to screen them out up front of any treatment system

• Location: Whitefish, Montana
• Year Installed: 2009
• Permit: MTDEQ/EPA/Coast Guard
• Discharge Location: Whitefish River
• Site Size: 750LF sheet-pile cofferdam isolation of

affected river sediments; dewatering prior to and through 6-48” of sediment and shoreline removal

• Site Activities: Sediment Drainage, Impacted

Groundwater, & Dewatering Fluids

• System: 300gpm WaveIonics System

Units Influent Effluent cPAH’s/PAH’s µg/L 3,187 < 10 Mercury µg/L 8.8 < 1 Arsenic µg/L 100 < 5 Cadmium µg/L 4.1 < 1 Chromium µg/L 200 < 1 Lead µg/L 3,300 < 1

• Pilot projects can be a great way to validate

technology for new applications (in this case, validating the use of EC without carbon for non- traditional contaminant removal)

• Successful results from this project were looked

at as a possible treatment model for Duwamish dredged sediment water treatment work

• Location: Houston, Texas
• Year Installed: 2011
• Permit: TCEQ TPDES
• Discharge Location: Houston Ship Channel
• Site Size: 6 acres
• Site Activities: Metal processing, crushing, storage
• System: 400gpm WaveIonics system

Units Historical Influent Average* Historical Influent Max Permit Limit Effluent Range Copper µg/L 646 7,540 158 20 – 62.3 Lead µg/L 347 2,470 645 2 – 20.3 Zinc µg/L 1212 5,300 683 2 – 67.9

*Data shown represents average value of monthly data collected form 1/1/2002 to 11/15/2008 **Data shown provided by client on 07/30/12 from full-scale field samples

• Look at cost balance between system size vs.

above-ground storage vs. below-ground storage and find the sweet spot

• Other states and industries are looking to

Washington and Oregon for case studies and solutions

• Make sure to design systems for the right climate

and weather patterns

• Technologies have come a long ways in the past

four years

• There are now lots of full-scale, robust, multi-year

data sets out there

• Still lots of exciting work going on with new

applications and pilot projects

• Our commitment is to continue working hard,

developing better systems and driving down costs

WaterTectonics 6300 Merrill Creek Parkway Suite C-100 Everett, WA 98203 www.watertectonics.com