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DUO QUICK REACTOR

DHS and UASB Operation with circulated sulfur-redox system


Overview
The system combines DUO-UASB (Up flow Anaerobic Sludge Blanket) for anaerobic bio reactor and DUO-DHS (Down flow Hanging Sponge) for aerobic bio reactor and offers an ultra high-speed wastewater treatment through the dual system. DUO QUICK REACTOR forms a sulfur-redox cycle from the sulfur content in the wastewater between DUO-UASB and DUO-DHS. DUO-DHS produces sulfate ion through sulfide oxidation to be returned to DUO-UASB. DUO-UASB activates sulfur-redox cycle to do sulfate respiration. Wastewater treatment with DUO of methanogen and sulfate reduction bacteria opens a new possibility for the stable operation of the ultra high-speed wastewater treatment without any heating even in winter.

Benefits
1. Lower construction cost and less space requirement.
  The tank size can be reduced to 1/2-1/4 compared to other anaerobic/aerobic wastewater treatment process.
2. Minimizing sludge treatment cost.
  Waste activated sludge generated less than 1/10 compared to the conventional activated sludge process.
3. Lower operation cost.
  No aeration power required. Electric consumption is less than 1/5 compared to the conventional activated sludge process.
4. Easy operation and maintenance.
  Allows fully automated operation thanks to ease of the operation control.
5. Denitrification and dephosphorization.
  Circulated system provides efficient denitrification. Subsequent dephosphorization process can be added to the system to meet the future governmental requirements.
6. Short erection/installation period up to start-up.
  Module structure cuts the construction time, and the system can be quickly boosted up to full performance at installation.

Applications
1. Municipal and rural sewage treatment.
2. Industrial organic wastewater treatment.

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