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49
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Title |
Application of a Fuzzy Control Method to a High-load Biological Denitrification Process in the Night Soil Treatment Plant |
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Authors |
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Ãø¼Ôɽµ(±Ñ) |
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Ãø¼Ô¶Ð̳Àè̾ |
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Office name |
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Key Words |
"activated sludge process, fuzzy inference, ammonium nitrogen, oxidized nitrogen, denitrification, night soil" |
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Abstract |
"The single basin biological denitrification system with intermittent aeration is an excellent system, which consists of simple components and has flexibility in operation. Ammonium nitrogen (NH4-N) and oxidized nitrogen (Nox-N=NO2-N+NO3-N) were monitored in an intermittently aerated denitrification reactor of by using NH4-N and Nox-N automated analyzers, each combined with an ultra-filtration sampler for pretreatment. The monitored result suggested that the aeration-time control method was better than the air-volume control method in nitrification. Then the authors tried to apply fuzzy inference by using mainly the aeration time control method. The fuzzy control system infered suitable conditions from multi-variables (DO, ORP and pH) obtained in the actual process. The fuzzy control system was steadily performed with a quick response and high nitrogen removal under easy maintenance." |