Silica Micro Encapsulation (SME)

 

The ”Best Available Technology” to treat heavy metal contaminated water, soil, sediment and sludge.

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             Silica Micro Encapsulation of Precipitated Copper Species ( 100x )

SME Process Description

 

SME usually achieves control of contaminants in a single step, without the need for pretreatment with chemicals or post-treatment flocculation or filtration.  Its physical/chemical components include an initial exothermic reaction and pH adjustment followed by an electrokinetic reaction and metal hydroxyl formation, which leads to silica encapsulation.  Contrary to conventional treatment processes that typically degrade over time, the SME silica matrix continues to strengthen and tighten, further isolating contaminants from the environment.

 

The entire reactivity and stabilization process occurs in minutes and generates harmless sand-like sediments, which rapidly settle out of the water.  The concentrations of heavy metals in the treated waters are reduced to well below acceptable state, federal and provincial pollution criteria, often below detectable limits.  In some treatment programs, particularly in the mining industry, it is also possible to provide resource recovery of certain metal concentrations present in the water.

 

 

 

 

 

NA-6 Value Added Review

 

·        Continuous Sewage Discharge Compliance

 

·        MOE Designation from “Special Waste” Operation to “ Industrial Waste”

 

·        Generally No Special Waste Permit Required for business operation

 

·        Generally No Business Special Waste Insurance

 

·        Generally No Director or Personal Special Waste designated Liability

 

·        Usually Reduction in Business Operations Insurance Costs

 

·        NA-6 product @ no cost compared to untreated Cost of Sludge disposal

NA-6 Treated sludge @ approx. $200.00 per tonne Compared to

Other types of precipitated Haz waste Sludge @ approx. $1100.00 per tonne

 

 

 

NA-6 Treatment Advantage

 

1.   Ability to treat Heavy Metal Contaminated Waste Streams in Industrial Shops  -  All in Same Treatment System

 

Floor Sump Sludge & Mud         Caustic Tank Solutions & Sludge

 

Radiator Test Tank Water & Sludge

 

Electroplating Spent Solutions, Rinse Water & Sludge’s

 

Nickel Filter Pack Cake & other types of Filtered Sludge

 

Hard Chrome Sludge & Ceramic Pot Sludge

 

 

Certificate of Analysis by IME - Nickel Filter Pack Sludge – NA-6 Treatment

Sample

Cu Total

Ni Total

Zn Total

Fe Total

Cd Total

Pb Total

Cr3

Cr6

pH

 

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

Units

#1218 Nickel Sludge

5.4

4000

4.8

200

0.1

0.5

4.3

1.3

6.80

Raw Water Nickel

Decant

 

 

 

 

 

 

 

 

#1218 NA-6 decant

<0.1

1.0

<0.1

0.8

<0.1

<0.5

<0.10

0.11

10.18

City of Edmonton

 

 

 

 

 

 

 

 

 

Regulations Criteria

1.0

4.0

2.0

n/a

0.10

1.0

2.0

2.0

11.0

 

 

Certificate of Analysis By IME of Waste Copper Solution – NA-6 Waste Water Treatment

Sample

Cu Total

Ni Total

Zn Total

Pb Total

Cr Total

Cd Total

pH

 

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

Units

Raw Copper Acid Solution

73200

493

1880

36

64

12

1

 

 

 

 

 

 

 

 

Copper Solution - NA-6 Treated

0.13

<0.03

<0.03

<0.03

<0.007

0.03

9.99

City of Calgary

 

 

 

 

 

 

 

System Regulations Criteria

3.00

3.00

3.00

1.00

3.00

Incl

10.00

 

Certificate of Analysis By IME – Zinc Stripping Acid – NA-6 Waste Water Treatment