Organics Group plc

Ammonia Stripping Systems

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Remove ammonia from leachate with a physical process, use can be made of landfill gas to heat leachate, or removal can be facilitated with pH adjustment

  • Reliable, predictable ammonia removal
  • Good for bulk removal of ammonia
  • Discharge levels of less than 10 mg/l
  • pH adjustment and thermal processes available
  • Site specific design-for-purpose

  • A low cost method of treating one particular aspect of leachate or other fluids polluted with the ammonium ion.
  • This technology will be applicable where the only parameter falling outside of a discharge consent requirement is ammonia.
  • Compact plant operating on a physical treatment method and hence more reliable than biological treatment systems.
  • Options to instrument the plant for remote monitoring and control.

Ammonia strippers supplied by Organics can be used for liquid flows of up to 5,000 cubic meters per day. Ammonia reduction of 10:1 can be accomplished with ease. Higher levels of removal may require elevated temperatures, high pH levels or multiple columns. With ammonium ion concentrations of over approximately 1,000 mg/litre it may be necessary to consider some form of exhaust air cleaning, either with an acid wash or by means of incineration.

Ammonia stripping has its place in the range of techniques applied to landfill leachate treatment where ammonia levels must be reduced but other component concentrations, such as COD and heavy metals, are within the limits of a discharge consent. The cost of such a system will in general be low compared with other options that may be considered. The power requirement for air circulation is less than that for an equivalent aerated system and water pressure heads required will be a function of the height of the stripper column. When operated with in-line pre-filtration such units can operate for many years with very little maintenance.

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