%0 Journal Article
%T Effect of Magnesium Iron Content on the Biological Phosphorus Removal System in SBR<br>镁离子浓度对SBR生物除磷系统的影响
%A LI Xing
%A GAO Da-wen
%A LIU Lin
%A <br>李幸
%A 高大文
%A 刘琳
%J 环境科学
%D 2011
%I 
%X This study investigated the effect of magnesium iron content on the enhanced biological phosphorus removal system, which performed differently at magnesium content of 0mg/L, 8mg/L and 24mg/L (R1-R3). The results indicated appropriate Mg addition could enrich phosphorus accumulating organisms and keep stable running. During the steady state period, phosphorus removal rate declined to below 50% gradually, moreover, the system tended to deteriorate with the shortage of magnesium in R1.However, the system with appropriate magnesium kept the higher phosphorus removal rate (more than 90%). The statistical analysis of the experimental data also showed a strong correlation between Mg and phosphorus concentrations in R2 and R3, the ratios of Mg and P were 0.29-0.59 and 0.25-0.54 in two reactors respectively. In the anaerobic phase of EBPR, the magnesium content, the absolute value of ORP and the phosphates release had a correlation. Meanwhile, magnesium was released together with phosphates in the anaerobic phase, and that would uptake under aerobic conditions. Thus it was obvious that magnesium played a key role on the biological phosphorus removal system.
%K biological phosphorus removal
%K mg2+
%K sequencing batch reactor (SBR)
%K water treatment
%K phosphorus accumulating organisms<br>生物除磷
%K 镁离子
%K 序批式反应器（SBR）
%K 水处理
%K 聚磷菌
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=3080FA4F2C89FF5DD8F4C8DFB08989AA&yid=9377ED8094509821&vid=9971A5E270697F23&iid=DF92D298D3FF1E6E&sid=1AE9108C480054ED&eid=2D8A2D26AFF207D2&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=0