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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 21st, 2004

Sacramento, California

Presented by: James Mothersbaugh


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


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


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


Stormwater Phase II

We use various types of technologies

to process stormwater

Trucking

Infiltration

Filtration

Passive Filtration

Polymer-chitosan

Electro-coagulation


Trucking


Infiltration


Polymer - Chitosan


Filtration - Cartridge, Sand & Bag

Backwash to Tank

Sand

Media Filters

PF50

Settling Tank

Cartridge Filters

Discharge to Storm

Site-water Collection Point


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)


Electro-coagulation


MAKE SURE WHEN COMPARISONS ARE MADE

EVERYTHING IS EQUAL


WT’s Technologies

Electro-Coagulation

&

Carbon Dioxide Control of Alkalinity


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


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


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


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


Wave-Ionics: In Action


Equipment Special Features

Primary System

Wireless alarms - notify operator

loss of flow

loss of electrical power

pressure due to blockage

NTU performance

pH problem


Performance Range

pH Performance

Turbidity Performance


Performance Results - ZINC

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


Performance Results - COPPER

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


Performance Results - LEAD

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


Wave-Ionics; Performance Control

Specialize Amperage Design Allows for NTU Control


AT Stormwater Phase II

Applications for Electro-coagulation

Construction Site Stormwater

Groundwater Cleanup

Emulsified Oils-Produced Waters

Metals-Pesticides


Liquid CO2

CO2 + H20  H2CO3

Carbonic Acid

Liquid Carbon Dioxide stored Pressure and released as a gas


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


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


“Water Tectonics”

Technology Evolution

Turbidity pH Metals Reduction

in

Stormwater

Enforcement of Regulations is changing

&

Technology is getting better


“The 1st Key”

Regulators

Need

To

Be

Involved


“The 2nd Key”

Clear

Permit

Language


“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


“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!!


“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


“The new rules”

  • Setup reciprocal agreements

  • with other States

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

  • calibration, toxicity controls

  • operation logs


The new message

Where Sediment ends – BMP’s

Turbidity begins - AT

Sediment is > 0.45 microns

Turbidity is < 0.45 microns


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 ?


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


Thank you

for inviting us

Presented by: James Mothersbaugh


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