The LemTec™ biological treatment process provides reliable and consistent Ammonia Nitrogen (NH3-N) removal through several processes. Most ammonia removal occurs in the complete mix cell through the optimization of aeration and mixing in that zone. Additional aeration (beyond that used solely for BOD removal) is supplied to meet ammonia removal requirements. When aeration is not sufficient to meet limits, supplemental mixing is added for complete treatment. Since ammonia removal depends on temperature, in cold climates a fully covered system is utilized to maintain the higher temperatures needed for nitrification.
Effluent from the covered lagoon treatment process alone contains less than 10 mg/l ammonia nitrogen (NH3-N). For lower effluent requirements, the Lemna Polishing Reactor (LPR) is included. Using fixed media, the LPR can meet ammonia limits of less than 1 mg/l.
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Contact Lemna to learn more about their efficient system design for ammonia removal.