Polyether Defoamer (QT-XPJ-101 / QT-XPJ-102) — Manufacturer & Supplier
Polyether defoamer is a non-silicone antifoam based on polyoxyalkylene (polyether) chemistry, ideal for biological wastewater treatment and fermentation. VCYCLETECH offers QT-XPJ-102 (a 26% water-based emulsion for microbial foam in aeration tanks that does not harm the bacteria) and QT-XPJ-101 (a ≥99%-solid emulsion that handles both microbial and surfactant foam). Both defoam fast and resist foam over a wide temperature range.
- Type: polyether (polyoxyalkylene) defoamer
- Models: QT-XPJ-102 (emulsion) · QT-XPJ-101 (high-solid)
- Best for: aeration tanks, fermentation, biochemical
- Aeration-tank safe: does not damage bacteria
Specifications
| Model | QT-XPJ-102 / QT-XPJ-101 |
|---|---|
| Appearance | 102: white/light-yellow opaque liquid · 101: transparent liquid |
| Solid content | 102: 26 ± 1% · 101: ≥ 99% |
| pH | 102: 6.0–8.0 · 101: 5.0–8.0 |
| Viscosity (25 °C) | 102: ≤ 2000 mPa·s · 101: ≤ 3000 mPa·s |
| Density (25 °C) | 102: 0.90–1.00 g/mL · 101: 0.9–1.1 g/mL |
| Continuous phase | 102: water · 101: neat |
Description
VCYCLETECH polyether defoamer uses polyoxyalkylene (polyether) actives instead of silicone, so it excels in strongly foaming, high-temperature and biological systems where silicone can be less compatible. It gives fast foam knockdown and strong, durable foam suppression, and is especially suited to aeration tanks and fermentation broths.
QT-XPJ-102 vs QT-XPJ-101
- QT-XPJ-102 — a modified polyether defoamer developed for microbial foam in water treatment. It eliminates foam in aeration tanks without damaging the activated-sludge bacteria. Water-based, 26% solids.
- QT-XPJ-101 — a high-solid (≥99%) polyether emulsion defoamer made by a special process; it controls both microbial and surfactant-stabilized foam and is more concentrated for tougher duties.
Performance & features
- Excellent in high-temperature and strongly alkaline/foaming systems.
- Non-silicone — suited to processes where silicone is unwanted.
- QT-XPJ-102 is safe for biological aeration tanks (does not harm bacteria).
- Fast knockdown with long-lasting foam suppression.
Applications
- Biological wastewater treatment — aeration tanks, MBR, activated sludge (QT-XPJ-102).
- Fermentation & biochemical — antibiotics, amino acids, yeast, enzymes.
- Papermaking and other high-temperature, high-foam processes.
Dosage & use
Dose to the foaming point, continuously or in shots; QT-XPJ-102 can be added directly to aeration tanks. Because foam load varies, run a bench trial to set the optimum dose — our engineers can recommend the model and rate for your system.
Packaging, storage & lead time
- Packing: 25 kg & 200 kg drums, 1000 kg IBC tote (other packing on request).
- Store sealed in a cool, dry, ventilated place at 10–30 °C, protect from freezing. Shelf life: 6 months.
- MOQ and lead time on request; in-stock items typically ship in 5–7 days, a 20′ FCL in ~15 days.
Why choose VCYCLETECH
Factory-direct defoamer manufacturer in China — ISO 9001 / 14001 / 45001 certified, a Certificate of Analysis (COA) with every batch, OEM / ODM and private-label packaging, and worldwide shipping. See our quality & certifications.
Frequently asked questions
What is polyether defoamer?
Polyether defoamer is a non-silicone antifoam based on polyoxyalkylene (polyether) chemistry. It gives fast foam knockdown and durable suppression and is especially effective in high-temperature, strongly foaming and biological systems such as aeration tanks and fermentation broths.
What is the difference between QT-XPJ-101 and QT-XPJ-102?
QT-XPJ-102 is a 26%-solid water-based polyether defoamer developed for microbial foam in water treatment; it clears foam in aeration tanks without harming the bacteria. QT-XPJ-101 is a high-solid (≥99%) polyether emulsion made by a special process that controls both microbial and surfactant-stabilized foam for tougher duties.
Does polyether defoamer harm bacteria in aeration tanks?
No. QT-XPJ-102 is designed for biological treatment and eliminates foam in aeration tanks and activated-sludge systems without damaging the microorganisms, so it does not disrupt the biological process.
When should I use polyether defoamer instead of silicone?
Choose polyether defoamer for biological wastewater (aeration tanks), fermentation and high-temperature or strongly alkaline systems, and where silicone is unwanted. Silicone (organic silicon) defoamer is preferred for general papermaking, textile and cleaning duties.
Is VCYCLETECH a polyether defoamer manufacturer?
Yes. VCYCLETECH manufactures polyether defoamer (QT-XPJ-101 and QT-XPJ-102) factory-direct in China, ISO 9001/14001/45001 certified, with a COA on every batch, free samples and OEM/ODM service. Email sales@vcycletech.com for a quotation.
Standard & references
Polyether defoamers are non-silicone antifoams widely used in fermentation and biological wastewater treatment. Learn more about foam control in our guides: defoamers in water treatment and everything you need to know about defoamers.
Related: Organic Silicon Defoamer · All defoamers · Wastewater treatment · PAM