摘要
为了提高生物除磷系统的运行效率,采用A2/O工艺进行了连续实验,考察不同碳源(乙酸、丙酸、葡萄糖)对聚磷菌(PAO)和聚糖菌(GAO)竞争的影响。结果表明:利用丙酸作为碳源时,胞内物质糖原和PHA的变化量最小,富集GAO最少,释磷量为38.3 mg/L,TP(总磷)去除率最高(93.8%);利用乙酸作为碳源时,富集PAO最多,释磷量最高(55.7 mg/L),TP去除率为89.1%;利用葡萄糖作为碳源时,释磷量最低(4.9 mg/L),富集GAO最多,TP去除率最低(57.5%)。PAO易利用乙酸和丙酸作为能量来源,成为优势菌种;GAO易利用葡萄糖作为能量来源,成为优势菌种。
A long-term continuous experiment was carried out using A2/ O process in order to improve the efficiency of biological phosphorus removal system. The effects of different carbon sources( acetate,propionate and glucose)on the competition between polyphosphate-accumulating organisms( PAO) and glycogen-accumulating organisms( GAO) were investigated. The results show that when propionate is used as the sole carbon source,the changes of intracellular substances and the accumulated GAO in the activated sludge system are minimal,and the mass concentration of phosphorus released is 38. 3 mg / L and removal efficiency of TP is 93. 8%. When acetate is used as the sole carbon source,the mass concentrations of phosphorus released( 55. 7 mg / L) and PAO accumulated are respectively highest,and the removal efficiency of TP is 89. 1%. When glucose is used as the sole carbon source,the accumulated concentration of GAO is maximal. However,the mass concentration of phosphorus released is the lowest( 4. 9 mg / L) and the removal efficiency of TP is also minimal( 57. 5%). The acetate and propionate are utilized easily as an energy source by the PAO and PAO becomes the dominant species. The glucose is utilized easily as an energy source by GAO and GAO becomes the dominant species.
出处
《化学工程》
CAS
CSCD
北大核心
2015年第10期1-5,共5页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(51478093)
吉林省科技发展计划项目(20130303080SF
20150519020JH)
吉林省教育厅十二五科学技术研究项目(2014-101)
