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Conference on Advanced Treatment For Construction Sites October 21 st , 2004 Sacramento, California PowerPoint PPT Presentation


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Conference on Advanced Treatment For Construction Sites October 21 st , 2004 Sacramento, California. Presented by: James Mothersbaugh. Company Information. WT's first commercial project 1 st direct discharge to a public lake- <5ntu

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Conference on Advanced Treatment For Construction Sites October 21 st , 2004 Sacramento, California

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Conference on advanced treatment for construction sites october 21 st 2004 sacramento california l.jpg

Conference on

Advanced Treatment

For

Construction Sites

October 21st, 2004

Sacramento, California

Presented by: James Mothersbaugh


Company information l.jpg

Company Information

  • WT's first commercial project

  • 1st direct discharge to a public lake- <5ntu

    2001Conditional approval for continuous treatment

    Continuous toxicity testing- acute & chronic

    Automated controls & online testing

    2002 Wireless monitoring and performance controls

  • StartedOperations in California

  • Expanded operations in Nevada, Texas, Florida


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Company Information

Scope of Services

Certified Toxicity Laboratory

Monitoring – Manual and inline automatic

Stormwater Treatment – multiple designs

Permitting – SWPPP & NPDES

Equipment Supplier of Control Systems

Fabrication of Specialty Systems


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Stormwater Phase II

Clients

Microsoft

New Redmond City Hall

Port of San Francisco-Pier 48

New Washington Mutual Headquarters

Home Depot

Whole Foods

Sound Transit

Brightwater Design Team

I-5 Everett Design Team


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Stormwater Phase II

We use various types of technologies

to process stormwater

Trucking

Infiltration

Filtration

Passive Filtration

Polymer-chitosan

Electro-coagulation


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Trucking


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Infiltration


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Polymer - Chitosan


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Filtration - Cartridge, Sand & Bag

Backwash to Tank

Sand

Media Filters

PF50

Settling Tank

Cartridge Filters

Discharge to Storm

Site-water Collection Point


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Passive Filtration

Overflow alarm float w/ light

Overflow to holding tank

A

Fabric

B

F

PressureControl

Valve

Pressure Gage

C

D

C

V

Flow meter

E

  • 2” reinforced, perforated suction hose

  • Pea Gravel

  • Sand / recycled glass

  • 5/8” – 7/9” washed rock

  • 4” reinforced, perforated suction hose

Sample Point

C

V

Screen Filter

Pump -50gpm @ 70’ head

(In riser cone)


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Electro-coagulation


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MAKE SURE WHEN COMPARISONS ARE MADE

EVERYTHING IS EQUAL


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WT’s Technologies

Electro-Coagulation

&

Carbon Dioxide Control of Alkalinity


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Reactions Comparison

Electrical-Coagulation

Chemical Coagulation

Metal plates are charged & sacrifice a (+) metal ion

The metal ion is normally Ferric or Aluminum

Ferric chloride positive charge

Cationic polymers positive charge

  • The metal ion cause the destabilization of suspended particles

  • The destabilization results in several forms of coagulation (compression, adsorption, sweep & bridging)

  • The consumption of electrical energy is inversely proportional to the conductivity

  • Colloids normally carry a negative charge

  • Dosage rate is related to contaminant load


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Advanced Treatment Technologies

Particle destabilization is essential

Particle sweeping is essential

Particle agglomeration is essential

EC Technology is based on Faraday’s Laws of Electrolysis


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Four Main Reaction Principles

  • Electro-flotation  !!!!!!!!

    • Production of micro bubbles supporting sweep aggregation of particles

  • Electro-flocculation

    • Production of flocculating agents that promote bridging and coalescence to remove colloids 

  • Electro-coagulation

    • Production of sacrificial ions to promote destabilization and charge neutralization and the promotion of oxidation

  • Electro-oxidation

    • Via the production of hydroxyl radicals


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Wave-Ionics: Equipment Profile

Control center for performance, power and remote wireless monitoring management

2” Influent

Wave Ionic

Pro Logic

Center

W.I.

Cell

Unit

Transformer

Wave-Ionics Technology

Polarity

Rectifier

6” to 2” discharge


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Wave-Ionics: In Action


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Equipment Special Features

Primary System

Wireless alarms - notify operator

loss of flow

loss of electrical power

pressure due to blockage

NTU performance

pH problem


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Performance Range

pH Performance

Turbidity Performance


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Performance Results - ZINC

1 mg/l for sanitary ----- > 99 % + reduction


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Performance Results - COPPER

1 mg/l for sanitary ……. 99 % + reduction


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Performance Results - LEAD

.4 mg/l for sanitary …… 96 % + Reduction


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Wave-Ionics; Performance Control

Specialize Amperage Design Allows for NTU Control


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AT Stormwater Phase II

Applications for Electro-coagulation

Construction Site Stormwater

Groundwater Cleanup

Emulsified Oils-Produced Waters

Metals-Pesticides


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Liquid CO2

CO2 + H20  H2CO3

Carbonic Acid

Liquid Carbon Dioxide stored Pressure and released as a gas


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CO2 GAS

CO2 + H20  H2CO3

Carbonic Acid

Effluent

Recycled Water

Weak Acid

Simple Inorganic

Safe

Used for 3 yrs in

Washington State

Carbon Dioxide

Liquid Injection


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Secured Web Portal

Data Center

Client A

Client B

Internet

Network Topography

Telemetry

Backbone

Application

Runtime

Server

Development Station

Router/Firewall

Data

Storage

Server

Local Station

Local Station


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“Water Tectonics”

Technology Evolution

Turbidity pH Metals Reduction

in

Stormwater

Enforcement of Regulations is changing

&

Technology is getting better


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“The 1st Key”

Regulators

Need

To

Be

Involved


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“The 2nd Key”

Clear

Permit

Language


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“The new rules”

  • Temporary Erosion Control Plans

    • That detail the size, frequency and volume of rainfall events as a baseline to design and size

    • stormwater treatment systems


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“The new rules”

Expectations-

numeric requirements!!!!!!!!!

new digital control systems allow protection for the contractor, the State and the environment

Subjective rules put all of us at risk!!


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“The new rules”

  • Water Characteristics –

  • Require the treatment system designers to address the site water characteristics;

    • high pH due to lime treatment,

    • low conductivity,

    • high colloidal clays

    • Backup emergency plans

    • Toxicity management


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“The new rules”

  • Setup reciprocal agreements

  • with other States

  • Treatment systems need safeguards to protect the environment & the user

  • calibration, toxicity controls

  • operation logs


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The new message

Where Sediment ends – BMP’s

Turbidity begins - AT

Sediment is > 0.45 microns

Turbidity is < 0.45 microns


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Ask yourself the questions

Mobilization & Treatment Costs ?

The market place will sort out cost of treatment

What Performance is required ?

The State needs to define the requirements

What are the risks?

Toxicity and Litigation

Safe ?


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Summary

Stormwater Phase II

Compliance

Water Tectonics, Inc 22833 Bothell Everett HwySuite 200Bothell, Washington 98021www. watertectonics.comOffice 425-402-1659Fax 425-424-2168

WT

Water Tectonics


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Thank you

for inviting us

Presented by: James Mothersbaugh


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