%0 Journal Article
%T Influencing Factors of Calcite Active Barrier System to Control Phosphorus Release from Sediments<br>方解石活性覆盖系统抑制底泥磷释放的影响因素研究
%A LIN Jian-wei
%A ZHU Zhi-liang
%A ZHAO Jian-fu
%A ZHAN Yan-hui
%A <br>林建伟
%A 朱志良
%A 赵建夫
%A 詹艳慧
%J 环境科学
%D 2008
%I 
%X Influencing factors of calcite active barrier system to control phosphorus release from sediments were researched,including barrier thickness,Ca~(2 ) of overlying water,temperature,calcite's grain size and artificial aeration.The results show that the calcite barrier can effectively control phosphorus release from sediments under anaerobic conditions,and its efficiency was influenced by barrier thickness,Ca~(2 ) concentration of overlying water,temperature,calcite's grain size and artificial aeration.The efficiency of calcite barrier to control phosphorus release from sediments will increase with the increment of Ca~(2 ) concentration of overlying water and barrier thickness.Application of 12.7(kg/m~2) calcite active barrier system resulted in 56% reduction of phosphorus flux from sediment for 72 days;however 99% reduction was obtained by 38.2(kg/m~2) calcite active barrier system.When the Ca~(2 ) concentration of overlying water increased from 1 (mmol/L) to 5 (mmol/L),the phosphorus concentration was reduced by about 36% in the 72~(th) day.In comparison to low temperature,high temperature was disbennifit to control phosphorus release from sediments by a thin calcite barrier.The smaller the grain sizes of calcite,the more efficient the calcite barrier.The ammonia and phosphorus release rate from sediments under calcite barrier will be decreased by aeration.
%K sediments
%K active barrier system
%K calcite
%K release control
%K influencing factors
%K phosphorus<br>底泥
%K 活性覆盖系统
%K 方解石
%K 释放控制
%K 影响因素
%K 磷酸盐
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=2F9676FC8492E95DE097C78B73E6C30A&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=CA4FD0336C81A37A&sid=CDEBD1ACE0A4C1C1&eid=6FBD78E3BAB60869&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=27