假单胞菌磷代谢特性的研究

本文考察了处理效果良好的循序间歇式废水生物脱氮除磷试验装置内活性污泥优势菌——假单胞菌(Pseudomonas sp.)的磷代谢特性。试验结果表明,在好氧条件下,以乙酸盐为基质培养时,向培养基内滴加H_2SO_4可导致假单胞菌产生磷释放现象,滴加NaOH或NaHCO_3时,则发生过量摄磷现象,且加NaOH较加NaHCO_3所引起的磷摄取量大。另外,当以乙酸盐为基质时,假单胞菌于好氧培养过程中能明显除磷,其效果与厌氧-好氧培养过程相近。

A Study on the Characteristics of Phosphate Metabolism of Pseudomonas sp.

The characteristics of the phosphate metabolism of Pseudo-monas sp., the predominate genus in the activited sludge mixed liquor from the sequencing biological batch system which effectively removes nitrogen, phosphorus and organic matter, were investigated. Experimeatal results demonstrate: (1) Under aerobic conditions and with acetates as carbon source, the addition of sulphuric acid causes Pscudomonas sp. to release phosphates, and the addition of NaOH and NaHCO8 causes pseudomonas sp, to excessively take phosphate. (2) The phosphate uptake capacity of Pscudomonas sp. is nearly the same in the aerobic system as in the anaerobic-aerobic system with acetate as carbon source.