How to Select Defoamers for Wastewater Treatment?

Do you have these questions about water treatment defoamers?

• Poor defoaming effect, incomplete foam elimination.
• Weak foam inhibition, causing secondary foaming.
• Concerns about exceeding indicators like pH, iron content, total alkalinity, total phosphorus, and total calcium/magnesium after adding defoamers, leading to secondary pollution.
• Worries about high costs and inconvenient operation…
  Don’t worry. Here’s a professional guide to water treatment defoamers.

Water Treatment Defoamers Applications

• Paper mill wastewater
• Chemical plant wastewater (multiple types)
• Pharmaceutical factory wastewater
• Feed mill wastewater
• Hospital, residential, and municipal sewage
• Various industrial wastewater treatment systems
• Industrial recycled wastewater treatment
• Medium/normal temperature and alkaline water treatment systems

Key Characteristics

• Rapid foam elimination with long-lasting defoaming effect.
• High efficiency and low dosage requirement.
• Non-corrosive, does not interfere with water treatment processes, water quality index testing, or discharge standards.
• Easily dispersible in water, compatible with liquid products, and resistant to demulsification.

Bio-Water Treatment Defoamers

• Specialized for bio-wastewater in various industries (e.g., industrial sewage, chemical wastewater, wastewater treatment).
• Technical Features:
  • Developed via polyether esterification technology, silicone-free, and designed for biological water treatment systems.
  • Offers rapid defoaming, long-lasting foam control, high efficiency, low dosage, and non-corrosiveness.
  • Particularly suitable for systems with fungal cultures, non-disruptive to membranes, and environmentally friendly.
  • Easily dispersible in water, compatible with liquid products, and free from oil floating or 破乳 (demulsification).

Design Principles

• Immediate foam collapse and prolonged anti-foaming performance.
• Applications in foaming systems across pharmaceuticals, papermaking, leather processing, dyeing, municipal bio-treatment, and chemical cleaning.
• Environmentally friendly formulations: non-toxic, harmless, and non-disruptive to microbial growth.

Functional Properties

1. Low surface tension, high activity, and strong defoaming power.
2. Stable under high temperatures, with low volatility.
3. Chemically inert, non-reactive with other substances, suitable for use under harsh conditions.
4. Physiologically non-toxic, posing no impact on the treated system.
5. Dual-functionality: both defoaming and anti-foaming, with anti-foaming efficacy lasting over 48 hours.