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.


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.

Item	Specification	Methods
Appereance	Brown transparent liquid	Eyeballing
PH	5.5-7.0	The 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

• Sample		INVELY-1802	Customer's sample
  Dosage		1ml
  Temperature		40 degree
  Time (S)	0	100	100
  	5	265	275
  	10	300	325
  	15	320	300
  	30	300	325
  	60	310	365
  	90	315
  	120	325
  	150	340
  	180	365
  Time(s) up to 400ml		3'20"	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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