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Dosieranlagen von Likusta

Supplemental Carbon addition in denitrification systems

Increasing nitrate discharge values induce operators of waste water treatment plants to use carbon dosing technology to ensure observance of limit values and efficiency of effluent treatment units.
Supplemental of diverse C source substrates expands biomass´ activity respectively excludes the lack of nutrient by operational disturbance or shutdown during weekends.
Size of operating unit and choice of substrate is determined by waste water treatment plant.


carbon source dosing system
carbon source dosing system

Possible substrates are acetic acid, glucose etc. without any ex-proof requirements. In case of non observing limit values, methanol and ethanol feeding is appropriate to increase denitrification rate. But if the substrate is overfed, it will not be completely consumed by the biological process which will result in elevated effluent biochemical oxygen demand concentrations.

Our dosing units allow a precise control of chemical dosage, that helps to minimize chemical costs.
LIKUSTA is an authorized manufacturer according to § 19 l of the Water Resources Law as well as the Regulation on Flammable Liquids.


dosing unit - ex proof
dosing unit - ex proof

Our services at a glance:
• Planning and explosion protection certificate
• Pre-assembling of components in our own production plant
• Control panel design, wiring and installation by our own electrical engineering department
• Approval by technical certified experts
• Unit maintenance

Supplemental carbon sources:
• Acetate
• Acetic acid
• Acetol
• Acetyl
• Carbodon
• Ethanol
• Ethylene glycol water mixture
• Glucose
• Glycotat
• Methanol


filling arrangement
filling arrangement