%0 Journal Article
%T Biodenitrification with sweet potato lixivium as carbon source<br>以红薯浸泡液为碳源的生物反硝化
%A Mei Xiang
%A Zhan Jing
%A Sha Hao
%A Xie Yue
%A Zhu Jin
%A <br>梅翔
%A 占晶
%A 沙昊
%A 谢玥
%A 朱瑾
%J 环境工程学报
%D 2010
%I 
%X In order to choose the appropriate carbon source in the biological nitrogen removal of low C/Nratio wastewater,a stirred tank was used to soak the starch matter to release carbon source,and the experiment of biodenitrification with sweet potato lixivium as the carbon source in a submerged biological filter was carried out.The experimental results showed that when 20 g sweet potato was added into 2 L water with stirring at 250 r/min for 3 h and without stirring for 1 h.the average concentration of released COD of the lixivium was 5 921 mg/L and the highest concentration was above 7 000 mg/L after 2 d.The average removal rates of total nitrogen,nitrate-nitrogen,nitrite-nitrogen and ammonia-nitrogen achieved 88.6%,91.6%,88.2%,54.8%respectively and the effluent COD concentration average was maintained below 30 mg/L,when the sweet potato lixivium and the wastewater were separately pumped into the reactor with the flow ratio of 1:50.When the COD concentration of the sweet potato lixivium was about 5 700 mg/L,the remoral rate of total nitrogen was 95.3% when the nitrite-nitrogen to nitrate-nitrogen concentration ratio was 3:2.while the removal rate of total nitrogen was 88.2% when the nitrite-nitrogen to nitrate-nitrogen concentration ratio was 2:3.The research indicated that the sweet potato lixivium was a kind of economical and suitable carbon source.and it was feasible to use the sweet potato lixivium in the biodenitrification for the treatment of low C/N ratio wastewater.
%K biodenitrification
%K submerged biological filter
%K sweet potato lixivium
%K carbon source<br>生物反硝化
%K 浸没式生物滤池
%K 红薯浸泡液
%K 碳源
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=4B954629215030D76BACDFA439AD5024&yid=140ECF96957D60B2&vid=E158A972A605785F&iid=94C357A881DFC066&sid=31CCC5D591A72A74&eid=E1D875FA50925809&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=11