Demulsifier is a high-efficiency separation chemical designed for oil–water emulsions.
It works by altering the interfacial tension and charge distribution of surfactants within the emulsion, thereby promoting rapid phase separation between oil and water.
Formulated with composite organic polymers and multifunctional surfactant components, this product offers fast demulsification, complete separation, wide applicability, and low treatment cost.
It is widely used in petrochemical, metalworking, coating, electroplating, and general wastewater treatment industries.
化学组成 | Chemical Composition
Blended organic polymers, surfactants, aluminum salts, and iron salts.
性能特点 | Product Features
·Rapid Demulsification: Achieves phase separation within 1–3 minutes after dosing.
·High Efficiency: Effectively breaks stable emulsions, ensuring clear separation and high water clarity.
·Excellent Compatibility: Can be used synergistically with PAC, PAM, and other coagulants to enhance treatment performance.
·Low Dosage Requirement: Delivers high treatment efficiency with minimal chemical consumption, reducing overall cost.
·Environmentally Safe: Free from harmful substances and does not interfere with biological treatment systems.
作用机理 | Working Principle
Displacement Adsorption：The active groups in the demulsifier compete with existing surfactants in the emulsion system for adsorption sites, disrupting the interfacial film and reducing emulsion stability.
Charge Neutralization：Neutralizes the charges between oil droplets and the aqueous phase, lowering the interfacial potential and reducing electrostatic repulsion.
Coalescence and Separation：Promotes coalescence of fine oil droplets into larger ones, enabling rapid flotation or settling and achieving efficient oil–water separation
应用范围 | Application Fields
·Petrochemical wastewater: Oily wastewater, produced water, refinery effluent
·Metalworking and cleaning wastewater: Cutting fluids, emulsions, degreasing wastewater
·Paint spray booth and coating circulation water
·Electroplating and surface treatment wastewater
·Other oil–water emulsions: Landfill leachate, food and dairy wastewater
技术指标 | Technical Data
| 项目 |
指标 |
| 外观 Appearance |
淡黄色或褐色液体 / Light yellow to brown liquid |
| pH（1%水溶液） pH (1% solution) |
2.0 – 5.0 |
| 密度 Density (25°C) |
1.16 ± 0.05 g/cm³ |
| 溶解性 Solubility |
可与水任意比例混溶 / Completely miscible with water |
| 离子型 Ionic Type |
非离子型 / 阴离子型（可定制） |
| Non-ionic / Anionic (customizable) |
|
Usage Instructions
Jar Test
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Add the demulsifier first and mix thoroughly.
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Adjust the pH to 7–9.
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Once small flocs appear, add polyacrylamide (PAM) to enhance flocculation and sedimentation.
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Typical dosage: 0.5‰ – 3‰, depending on wastewater characteristics.
On-site Dosing
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Dilute the stock solution to 1–5% concentration before use.
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Recommended dosing point: coagulation tank or before the air flotation unit.
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Compatible with PAM, PAC, and other coagulants.
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Typical dosage: 0.5‰ – 3‰, adjustable based on water quality.
Packaging & Storage
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Packaging: 25 kg plastic drum / 1000 kg IBC tote
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Storage Conditions: Keep sealed in a cool, ventilated place; avoid direct sunlight and freezing.
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Shelf Life: 12 months (unopened condition)
Safety & Handling
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Classified as non-hazardous.
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Wear protective gloves and safety goggles during handling.
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In case of contact with skin or eyes, rinse immediately with plenty of water.
Technical Support
We provide comprehensive technical assistance, including:
🔹 Laboratory wastewater beaker test
🔹 Customized formulation and on-site optimization
🔹 Dosing system design and process optimization
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