Vault-Ox™ Net 20 lbs. Contains (4) 5 lb. packetsKeep material dry. Store in a cool dry place.Do not store or expose to heat sources. Formore information see Material Safety DataSheet.
Interevent Water Quality in Manufactured BMP’s• Strynchuk, Royal and England, 1999 Reported “the majority of organic-based pollutants, which leach from grass clippings and leaves into water will be released within 1 to 22 days…BOD peaked at 9 days…most of the phosphorus was released in the first day…”• Marino and Gannon, 1991 Tested storm drain sediments during dry weather periods and found “Extended bacterial survival in sediments to survival in water…FC and FS in sediments remained stable for up to 6 days (the maximum inter-storm dry period).”• GPI Southeast, in the Final Report – Baffle Box Effectiveness Monitoring Project, 2010 reports “net exports of fecal coliforms and anaerobic conditions…” and suggest “probable causes for FC growth in baffle boxes are the interevent anaerobic conditions…” and point out “…use of any water storing box can lead to increased FC counts to water bodies”.
Patented dry chemical containingVault-Ox™ calcium and oxygen Practically insoluble but slowly degrades to release oxygen Sequesters phosphate: precipitates as CaPO4 or FePO4 Improves aerobic bioremediation Raises pH to alkaline state: Keeping metals out of solution Stormwater quality structures Underground water storage Ponds Ground water remediation
Properties of Vault-Ox™ Granules Appearance Yellowish white granules Composition CaO2 and additives Calcium peroxide (%) 70% min Available oxygen (%) 15.5% min Metal impurities Meets Food Chemicals Codes Particle size (90%) ~ 500-2000µ 7.5 pH (0.05% suspension)
Chemistry of Vault-OxTM in Water At natural pH – very slow decomposition generating oxygen and lime 2 CaO2 + 2 H2O 2 Ca(OH)2 + O2 Rate of oxygen generation depends upon Product characteristics - particle size, formulation, etc. Environmental conditions - water quality, pH, agitation, concentration, etc.
Vault-OxTM A source of Alkalinity Increases the formation of calcite and apatite This increases the P-binding capacity of calcium Reduces free H2S concentrations Formulation buffers and regulates pH Counters acid rain Prevents acidification of water when sulfides are oxidized Maintains heavy metals in an immobilized oxidized state
Chemistry of Vault-Ox™ in Acid In buffered systems at lower pH, CaO2 dissolves faster and produces progressively increasing amounts of H2O2 CaO2 + 2H+ Ca2+ (aq) + 2H2O2 Ca(OH)2 + 2H+ Ca2+ (aq) + 2H2O
SRP Removal Efficiency Vault-oxTM vs. Aeration 140 CaO2 120 Aeration Anoxic 100 80P (mg/L) 60 40 20 0 0 5 10 15 20 25 Time (Days) Treatment done after 15 days of incubation Zhang et al, Water Science & Tech., 50, 173 (2004)
Effect of CaO2 on BOD, Organic C and N 100% Removal 50 w/ CaO2 w/o CaO2 BOD Organic C Organic N (Hanh et al, Env. Tech.), 26, 581 (2005)
7.50 7.00 9.50 6.50 9.00 6.00 8.50 8.00 40263 40265 40267 40269 40271 40273 40275 40277 40279 40281 40283 40285 40287 40289 40291 40293 40295 40297 40299 40301 40303 New Water Sample 40305 40307 40309 40311 40313 40315control 40317 40319 pH 40321 40323 Test ControlNote: The sample water contains highamounts of sulfur, forming H2S in the
Vault Ox™can be addedto a chamberas freegranules orin an easilyretrofitperforatedtubing andmeshsystem.
Addition of VaultOx™ with natural Z-100 have desirableselctive ion exchange and absorption properties that beused in the removal of:•Ammonia from wastewater/stormwater•Heavy Metals from industrial process,waste andstormwaters•Effective in the adsorption of aluminum, antimony,arsenic, barium, cadmium, chromium, colbalt, copper, iron,lead, magnesium, manganese, mercury and nickel
Control 4/21/2010 Sample with Vault Ox 4/21/2010Coliforms: purple-blueE. coli: pinknon-Coliform: colorless
Control 4/25/2010 Sample with VaultOx, Four day treatment
Safety and Handling Vault-oxTM Granules is classified as a 5.1 Oxidizer - Packing group II All individuals who handle the product for shipping need DOT training (including those who prepare paperwork) Keep containers closed, dry and away from direct sunlight and sources of heat Decomposition agents include moisture, dirt, organic matter, reducing agents, acids
Health Hazards Most health hazards come from direct skin contact and inhalation of dust Wear personal protective equipment Dustproof chemical goggles Impervious protective gloves Avoid breathing dust Avoid skin contact