Aqua-Pure ASB1001 - Manual (Page 5)

SECTION 1: BEFORE INSTALLATION
Inspecting And Handling Your Filter System:
Inspect the equipment for shipping damage. If damaged, notify the transportation company and request a damage inspection.
Handle the fi lter with care. Damage can occur if dropped or set on sharp, uneven projections on the fl oor. Do not turn the fi lter upside down. Installation must
comply with state and local laws and regulations.
Titanium Oxide
Titanium oxide fi lter media is used to reduce heavy metals in water. It is manufactured as a granular material, is white in color and shipped dry. Titanium oxide
has the ability to reduce arsenic arsenate and arsenite (otherwise referred to as AS (V) and AS (III), if applied and installed properly. The material is sold in cubic
foot equivalent quantities for use in backwashing vessels and performs its task by adsorption. Adsorption is performed as the water passes through the fi lter
medium in the pressure vessel and the arsenic is attracted to the media. Once adsorption takes place, the arsenic is permanently retained by the titanium oxide
granules. Occasional backwashing of the fi lter will prevent channeling of the fi lter media and wash away any sediment and color to a waste drain while not
reducing any arsenic from the titanium oxide. This will help provide better quality water and help extend the life of the fi lter. The life of this fi lter medium can
vary depending on the amount of other heavy metals in the water.
IMPORTANT NOTE
Have the water tested thoroughly prior to the installation of this fi lter system.
Test of the following constituents are recommended prior to installation, but are not limited to the following.
1. Arsenate (AS V) 7. Tannins 13. Selenium
2. Arsenite (AS III) 8. Total Dissolved Solids 14. Vanadium
3. Total Hardness 9. Hydrogen Sulfi de Gas 15. Cadmium
4. Total Iron 10. Silica 16. Phosphates
5. Manganese 11. Zinc
6. pH 12. Lead
Only testing the fi nished water will determine when it is time to change out the fi lter media bed. The water should be tested at six (6) month intervals to confi rm
there is a reduction of arsenic in the treated water. The target level of arsenic reduction in the treated water is less than 10 ppb, which is the US EPA maximum
contaminant level (mcl). Changing of the titanium oxide fi lter media should take place when test results shows greater than 10 ppb in the treated water. Dispose
of exhausted titanium oxide in accordance with your state and local ordinances and regulations.
One can expect the useful life of titanium oxide to vary from various aspects. It should be understood that the higher the arsenic concentration in the water the
shorter the life one could expect from the titanium oxide. The life expectancy can vary depending on the amount of other heavy metals that would compete
for sites of the titanium oxide media, the amount of water being treated, and how well the fi lter unit is backwashed. Backwashing requirements are driven
by a pressure drop. Usually backwashing once every 30 days is suffi cient. The fi ltered arsenic cannot leach from the titanium oxide
1 during the backwashing
process.
1-1
TABLE OF CONTENTS
SECTION DESCRIPTION
1 BEFORE INSTALLATION
2 INSTALLATION
3 MAINTENANCE
4 TROUBLESHOOTING
5 EQUIPMENT SPECIFICATION AND OPERATING DATA
6 COMPONENT LIST & ASSEMBLIES
7 LIMITED WARRANTY
1 Jing, Chuanyong, Sugin Liu, Manish Patel, and Xiaoguang Meng. “Arsenic Leachability in Water Treatment Adsorbents.” Environmental Science &
Technology 39 (2005): 5481-5487.