Product/Service

Cleargreen™

Source: Degremont Technologies

CleargreenBio

Cleargreen™ (for Cyclic Low Energy Ammonium Removal) augments anaerobic treatment of biosolids (biological, primary, co-digestion) by removing the nitrogen overload. Deammonification allows the treatment of concentrated ammonia generated by anaerobic digestion of sludge in the side stream of the plant– limiting the impact of digestion on the main water treatment line.

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CLEARGREEN™ TECHNOLOGY
Cleargreen™ is designed to work within a biological sequencing batch reactor (SBR) such as Cyclor™, a Degrémont reactor that allows the successive completion of all treatment phases in the same tank.

Feed, aeration and deammonification phases are divided into sub-cycles and adapt in duration and intensity according to the characteristics of the effluent to be treated. The deammonification process uses Anammox bacteria, naturally present in the environment. Cleargreen™ does not require the addition of an external seed biomass to function.

A specific treatment after anaerobic sludge digestion: with Cleargreen™, the loads of ammonia and nitrates do not return to the head of the water treatment line, but are treated in an effective manner.

The reactor is equipped with sophisticated controls, continually monitoring the system to limit human intervention.

CLEARGREEN™ ADVANTAGES:
Removal of Nitrogen generated by anaerobic digestion of biosolids

  • Performance and Savings:
    • Cost-effective treatment of stream with high-loads of ammonia
  • Sustainable Development:
    • Reduction of resources (energy, chemicals) used

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