厌氧条件下短链脂肪酸对生物磷释放和PHB合成的影响

THE EFFECTS OF SHORT CHAIN FATTY ACID ON BIOLOGICAL PHOSPHATE RELEASE AND PHB SYNTHESIS UNDER ANAEROBIC CONDITION 

本项研究的基本目的是测定在厌氧条件下乙酸盐、丙酸盐、丁酸盐对生物磷释放和ＰＨＢ合成的影响．测定了不同浓度乙酸盐对生物磷释放的影响及在硝酸盐存在的缺氧条件下，丁酸盐对生物磷释放和ＰＨＢ合成的影响．用氧化还原电极监测污水的厌氧和缺氧状况．应用气、液色谱层析仪精确测定了活性污泥中ＰＨＢ、ＰＨＶ的含量．通过一系列批量试验。

The basic objective of this research is to determine the effects of acetate, propionate and butyrate on the biological phosphate(bio p) release and poly β hydroxybutyrate(PHB) synthesis and to test the effects of different acetate concentrations on the bio p release as well as the effect of butyrate on the bio p release and PHB synthesis in the presence of nitrates. Oxidation reduction potential probes are used to monitor the relative anaerobic and anoxic states of the sewage. The author quantified PHB, PHV in activated sludge by gas liquid chromatography. It has been demonstrated through a series of batch experiments that phosphorus release and PHB synthesis both take place in anaerobic zone of the bio p removal process, and the key factors to the maximization of PHB synthesis are that simple carbon substrates should be added to the anaerobic zone and that the addition of electron acceptors should be avoided.