Vitec® 7000
Calcium Sulphate Antiscalant/Dispersant
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Vitec® 7000 is a proprietary liquid antiscalant/dispersant designed to inhibit scale and disperse colloidal particles in cellulose acetate and thinfilm membrane separation systems. This formulation is an especially effective calcium sulfate (CaSO4) scale inhibitor, allowing up to 6 times saturation.
Vitec® 7000 is compatible with organic coagulants and can be injected neat or diluted in a wide array of feedwater sources.
Performance:
Vitec® 7000 antiscalant offers a variety of critical performance and application benefits:
- Powerful inhibitor against a variety of carbonate and sulfate scales:
| CaCO3 | CCPP > 900
(LSI >2.5) |
| CaSO4 | 6.0 x Ksp |
| BaSO4 | 105 x Ksp |
| SrSO4 | 20 x Ksp |
| CaF | 1000 x Ksp |
| SiO2 | 120 ppm |
- Highly effective in a wide range of feedwater types and pH ranges.
- Crystal modification property distorts inorganic salt crystal growth, reducing system fouling.
- Compatible with polyelectrolyte coagulants.
- Threshold scale inhibition at low dosage rates allows economical system operation.
Application:
Optimum Vitec® 7000 performance is achieved when the chemical is injected downstream of multimedia filters and upstream of cartridge filters.
Dosing Guidelines:
The typical dosage range is between 2 to 5 ppm. A site-specific dose can be determined using the
Avista Advisor computer program. Like any injected chemical, over or underdosing may cause unnecessary membrane system fouling. Please contact the Avista customer service department for customized dosing instructions.
Dilution:
The dilution for Vitec® 7000 should not exceed 10%. This guideline will protect the effectiveness of the internal bacteriostat, which inhibits bacterial growth within the drum and feed tank.
Packaging and Storage:
Standard regional pack sizes are listed below. Custom packaging can be provided worldwide to meet customer needs. Information on drumless or bulk tanker delivery is available on request.
| Specifications |
| Appearance: |
Clear liquid |
| pH (10% solution): |
5.0 — 6.0 |
| Specific Gravity@20°C: |
1.2 ± 0.05 |
|
|
| Packaging Formats |
Americas |
EMEA |
| Pails |
45 lbs |
23 kg |
| Drums |
500 lbs |
230 kg |
| IBC's (totebins) |
2500 lbs |
1100 kg |
|
This product should be protected from freezing during storage as the active ingredients may separate under extreme temperatures. If freezing occurs, warm the chemical until it returns to the liquid state and stir to recombine.
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