Leachate Defoamer: Chemi Tech's Solution for High-COD Wastewater Foam

When the control panel alarms in a waste treatment plant, operators found the leachate equalization tank shrouded with 60cm foam – causing false level readings and pump cavitation.

This reflects the universal challenge in leachate treatment: foam generated from humic acids, heavy metals and surfactants severely disrupts processes. Ordinary defoamers often fail due to poor salt tolerance or rapid reactivation.

Analyzing leachate samples from 17 landfills, Chemi Tech developed a core-shell structure defoamer with:

• Extreme resistance : Active at COD>30000mg/L and pH2-11

• Targeted action : Preferentially breaks sulfur/ammonia-rich foam films

• Zero interference : Silicone-free formulation protects membrane systems

A Shanghai incineration plant reported 92% foam reduction within 5 minutes of dosing, with aeration tank DO recovering to 4.2mg/L. "It ended our rainy-season foam overflow crisis," remarked the chief engineer, "cutting treatment cost by ¥15/ton."

For increasingly complex leachate compositions, Chemi Tech delivers one certainty: foam will no longer block the path of waste valorization.