%0 Journal Article
%T Denitrification Using PBS as Carbon Source and Biofilm Supporter: Effect of pH<br>pH对以PBS为反硝化碳源和生物膜载体去除饮用水源水中硝酸盐的影响
%A ZHOU Hai-hong
%A WANG Jian-long
%A ZHAO Xuan
%A <br>周海红
%A 王建龙
%A 赵璇
%J 环境科学
%D 2006
%I 
%X PBS, a new kind of biodegradable polymers (BDPs), was used as carbon source and biofilm carrier to remove nitrate from drinking water. The effect of pH was investigated in detail and the results show that fine biofilm can form on the surface of PBS granules and protect denitrifiers. PBS denitrification system can endure higher pH shocking than that of traditional carrier. When influent pH was between 5.0 to approximately 9.0, effluent pH tended to be neutral and denitrification rate was 0.60 to approximately 0.63 mg/(g x d) while the maximum value was 0.70 mg/(g x d) (pH 7.5 to approximately 8.0). Effluent nitrite level was unstable when pH of solution was 6 to approximately 8. It was as high as 0.7 mg/L when pH was below 6 and no more than 0.1 mg/L when pH was higher than 8.
%K drinking water
%K denitrification
%K biofilm
%K biodegradable polymer<br>饮用水
%K 反硝化
%K 生物膜
%K 可生物降解多聚物
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=33D46E04D05ED027&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=211C7E02AC474301&eid=2AC7DCCBBC26ECF8&journal_id=0250-3301&journal_name=环境科学&referenced_num=20&reference_num=16