Datasheet summary
RoQuest-3000
Engineering summary from PDF text extraction for RoQuest-3000. Verify every value with the OEM datasheet.
Summary
Product identification
- Product Name: RoQuest® 3000
- Product Type: Liquid coagulant
- Brand: Avista
Application
RoQuest® 3000 is a multicomponent polymer coagulant designed for membrane use. It is applied to water sources with hard silt-based colloidal particulates, including particle-laden borehole sources or treated municipal supplies for industrial or drinking water. It is injected into the feedstream of multimedia and sand filters to enhance performance by reducing turbidity and color, thereby minimizing downstream reverse osmosis (RO) and nanofiltration (NF) membrane fouling.
Feed water limits
- Maximum Turbidity: 2.0 NTU (for raw waters)
- Maximum Color: 10 units (for raw waters)
Operating limits and instructions
- Injection Point: Inject at least 15 feet (5 m) upstream of multimedia filters.
- Mixing: Allow proper mixing within the feedstream before filter introduction. Do not use static mixers upstream of filters, as shear can degrade polymers.
- Dosing: Typical dose ranges from 0.5-4.0 mg/l. Refer to the RoQuest Coagulants Selection Guide and Avista Advisor for specific calculations. Significant overdosing may degrade filtered water quality.
- Dilution: Can be diluted at a rate of 25:1 using dechlorinated water prior to injection to potentially improve effectiveness, though not generally necessary.
Product information
Specifications
- Appearance: Clear, colorless to amber liquid
- pH (1% solution): 4.0-6.0
- Specific Gravity (@25°C): 1.0-1.1
Performance benefits
- Filter-aid properties resist solids breakthrough.
- Low dosage requirements and no minimum alkalinity.
- Internal biostat inhibits biological growth in storage.
- Effective over a wide pH range.
- Capable of producing RO quality feedwater in multimedia and sand filters.
- Compatible with polyamide and cellulose acetate RO membranes, and Avista antiscalants (Vitec® 3000, 3025, 5000, 5100, and 7000).
Packaging
Standard regional pack sizes include:
- Pail: 45 lb (23 kg)
- Drum: 475 lb (220 kg)
- IBC tote: 2200 lb (1000 kg)
Drumless or bulk tanker delivery available on request.
Certifications
Certified to NSF/ANSI 60.
Disclaimer: Extraction may miss figures, footnotes, or revisions; contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.