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Landfill leachate defoamer

Landfill leachate defoamer

Landfill leachate has complex water quality and contains a variety of toxic and harmful inorganic and organic substances. The concentration is much higher than that of municipal sewage. Leachate needs to be strictly treated. Generally, anaerobic biological filter (IAF) and aerated organisms are used. Combined filter (IBAF) is used as a biological treatment process. Specific types of waste infiltration treatment devices include traditional activated sludge method, stable pond, biological turntable, anaerobic fixed membrane bioreactor, etc. Generally, it will be filtered through several membranes to remove suspended matter and harmful molecules. During this process, a large number of air bubbles will be generated, which is not conducive to membrane filtration and the discharge of harmful gases, and will also cause the accumulation of suspended matter.let'slearn Landfill leachate defoamer.defoamer


The following is the application case of our customer which need defoamer for landfill leachate:

During the membrane filtration process, the foaming is serious, which brings certain difficulties to the operation and management of the leachate, and then affects the quality of the effluent water. So customer have been trouble with this problem, we recommend them our defoamer INVELY-1802 which especially be used for landfill leachate.
  • Below is the testing detail:
Product Name: Defoamer INVELY-1802
Key Properties:
  • Fast defoaming and strong foam suppression performance
  • Not contain mineral hydrocarbons, which is conducive to environmental protection;
  • Excellent effect in low temperature and rich PH range.
ItemSpecificationMethods
AppereanceBrown transparent liquidEyeballing
PH5.5-7.0The PH Scale Measures

  • Test Method:

Compare the Invely-1802 with customer’s sample by air drum in landfill leachate;
  • Test temperature: 40 ℃
  • Antifoam agent dosage: 1 ml
  • Type and amount of test medium: landfill leachate, 100ml
  • Wash the air drum test instrument and add 100ml of garbage leachate. At the set flow rate (double drum head, the flow is opened to the maximum) and temperature, add the defoamer and then turn on the air drum. Record the foam height at different time . The foam suppressing performance of the samples was compared by recording the regularity of the foam volume V over time.
Test Result
  • SampleINVELY-1802Customer's sample
    Dosage1ml
    Temperature40 degree
    Time (S)0100100
    5265275
    10300325
    15320300
    30300325
    60310365
    90315
    120325
    150340
    180365
    Time(s) up to 400ml3'20"1'17"

Conclusion

Under the same conditions, the defoaming speed of INVELY-1802 is faster than that of customer’s sample.

The landfill leachate defoamer is composed of polyether, white carbon black, dispersant and stabilizer; it can maintain a good defoaming effect at a lower concentration. When it is used in the landfill leachate treatment membrane, the damage to the membrane is small, the cost of membrane replacement can be greatly reduced, it will not cause harm to human health, and it has a good degree of integration with most systems. Harmless ingredients.
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