1. SuperSand™

2. History
The first pilot trial on Tertiary filtration of municipal waste water was carried out in August 1978 by Dr. Hans F Larson for Axel Johnson Engineering which became Nordic Water.

3. History Nordic Water is original inventor (DynaSand)
Over 25,000 units installed worldwide
History in North America
Licensed to Parkson in 1977 (DynaSand)
Sold direct through Waterlink (SuperSand)
Licensed to WesTech in 2009 (SuperSand)

4. Experience
More continuous backwash filter installations than all other competitors combined

5. Operation Influent Effluent Wash water Air Lift Pipe Sandwasher
Influent Distributor
Sandwasher
Air Lift Pipe

6. Operation

7. Sandwashing

8. Continuous Improvement
Material modifications
- Airlift pump / pipe
- Wash box
- Internal distribution
- Splash Plate
Additional size options
- 64 ft2 concrete filter unit

9. Internals

10. Washbox Plunger verifies waste rate per filter
Molded plastic construction

11. Washbox
Dual Washwater Weirs

12. Installations Peach Lake, NY 3 Filters Brunswick School, NY 1 Filter
Hanover, PA
48 Filters
Novato, CA
6 Filters
Soda Springs, ID
5 Filters
Joppatowne, PA
8 Filters
Salmon, ID
Petaluma, CA
2 Filters
Catawba, NC
12 Filters
Village of Antwerp, NY
2 Filters
Beulaville, NC
Fruitland, ID
8 Filters
Chambers Creek, WA
4 Filters
Silver Creek, NY
Camp Roberts, CA
1 Filter
Millbrook, ON Canada
Strasburg, VA
16 Filters

13. Novato, CA 6 Filters 1 x 3 Layout 50 ft2 Units 1.7 MGD 4 gpm/ft2
Title 22 Reuse

14. Novato Installation

15. Novato Installation

16. © WesTech Engineering, Inc. 2015