• 作者： 葉宣顯
• 作者服務機構： 國立成功大學土木工程研究所
• 中文摘要： 本文利用鳳梨廢水活性污泥進行桶分式（Batch System）喜氣消化之研究，觀察消化期間污泥中氮，磷及醣類之轉移，和微生物（主要為原生動物Protozoa）種類之變化。 由試驗所得之結果，可以看出喜氣消化之初期，污泥所含有機氮及醣類之變化甚小，隨後進行激烈之內代謝作用（Endogenous Metabolism），有機氮及醣類方才大量減少。其中有機氮分解後，釋出氨於上澄液中，氨經消化作用（Nitrification）成為亞硝酸氮，最後成為硝酸氮，接著發生脫氮作用（Donitrification），放出氮氣於大氣中。到消化作用之最末期，污泥性質已趨於穩定，有機氮及醣類之減少又趨於平緩。喜氣消化過程中，上澄液正磷酸鹽隨消化作用之進行而增加，故上澄液正磷酸鹽量，似可作為污泥喜氣消化進行程度之指標。至於微生物，則依自由游動性纖毛蟲類（Free-Swimming Ciliates），有柄纖毛蟲類（Stalked Ciliates）及輪蟲（Rotifers）之順序出現，而以輪蟲佔優勢（Dominant）之時間最長且最重要。
• 英文摘要： In order to study the transfer ofnitrogen, phosphorus and carbohydrate,also the ecological change of dominantmicroorgansim species (especially forthe protozoa)., an aerobic digestionbatch system of activated sludge frompineapple waste was conducted. The investigation showed that theconversion of organic nitrogen andcarbohydrates in sludge were slow atthe early stage of aerobic digestion.Whole endogenous metabolism procee-ded actively, both organic substrateswould be digested quickly. During thebiological degradation, the organic ni-trogen in sludge was deaminized enzy-matically to produce ammonia-nitrogersinto the supernatant, then it was con-verted through bacterial denitrificationto nitrogen gas, and finally releasedto the atomosphere. At the latter stage of aerobic dige-stion, the sludge became so stable thatthe variation of it's organic nitrogenand carbohydrate can hardly be detec-ted. According to the drastic degree ofaerobic digestion the increased concen-tration of ortho-phosphate（PO-P）inthe supernatant would be used an in-dex for this process. As to microorganismecology, the free-swimming ciliates, thestalked ciliates and the rotifers domi-nated in sequence, whole the rotifer wasof most important.
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