[污水污泥中磷组分及生物可利用磷形态的分布及其关系]
[Distribution of phosphorus fractions and bio-available phosphorus forms and their relationships in sewage sludge].
作者信息
Wang Chao, Feng Shi-long, Wang Pei-fang, Li Xiao-chen, Zou Li-min
机构信息
State key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China.
出版信息
Huan Jing Ke Xue. 2008 Jun;29(6):1593-7.
To investigate the potential bioavailability and mobility of phosphorus (P) in sewage sludge, the Standards, Measurements and Testing (SMT) programme was employed to characterize the distribution of P in sewage sludge from different treatment stage of Jiangxinzhou WWTP. The results showed that the inorganic phosphorus (IP), accounting for 61%, was the predominant fraction of total phosphorus (TP), while the organic phosphorus (OP) in TP was only 15% to 35%. And the IP mainly distributed in the non-apatite inorganic phosphorus (NAIP) fraction, accounting for more than 60%. It suggested the high potential bioavailability and mobility of P in sewage sludge. The significant positive correlations between the contents of TP and the NAIP + OP indicated that the determination of TP could be used to estimate the potential bioavailability of P in sewage sludge. The correlations between the P fractions and the physical-chemical characteristics suggested that the LOI and pH would influence significantly on the potential mobility of P in sewage sludge.
为研究污水污泥中磷（P）的潜在生物有效性和迁移性，采用标准测量与测试（SMT）方案对江心洲污水处理厂不同处理阶段污水污泥中的磷分布进行表征。结果表明，无机磷（IP）占总磷（TP）的61%，是总磷的主要部分，而总磷中的有机磷（OP）仅占15%至35%。并且无机磷主要分布在非磷灰石无机磷（NAIP）部分，占比超过60%。这表明污水污泥中磷具有较高的潜在生物有效性和迁移性。总磷含量与NAIP + OP含量之间存在显著正相关，表明测定总磷可用于估算污水污泥中磷的潜在生物有效性。磷组分与理化特性之间的相关性表明，烧失量（LOI）和pH值会对污水污泥中磷的潜在迁移性产生显著影响。
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