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The regulations to ammonia-containing wastewater have been strengthened successively. However, in Japan discussing the 6th area-wide pollutant load controls and further increase in regulations to achieve by 2009, it is of prime importance to adopt an ammonia treatment process well suited to incoming wastewater properties. This JGC process strips off ammonia from wastewater in a stripper and then converts it to nitrogen and steam in a catalytic converter. Further, by employing a self-compressing system permits an effective utilization of the steam energy generated in the stripper. |
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Features |
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- Different from biological treatment, this process physically converts ammonia in wastewater to nitrogen and steam using the stripper and the catalytic converter.
- Chemical (i.e, NaOH, methanol) injection not required.
- Use of a self-compressing system (compresses the generated steam to use the heat as a heat source) permits energy savings in an ammonia distillation column
- Conversion of ammonia into non-toxic, odorless nitrogen and steam
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Applications |
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- Highly concentrated ammonia-containing wastewater, such as wastewater from sewage sludge treatment or human waste treatment
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Experience |
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- Osaka City: For a sewage treatment plant
(This technology is a joint development with the Osaka Environment and Sewage Bureau and Mitsubishi Kakoki Kaisha.)
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