富磷上清液铁接触除磷污泥性质与资源化利用  

The characters and reuse of sludge from phosphorus removal by iron-contactor process for anaerobic phosphate-enriched supernatant

作　　者：陆敏博[1,2] 王世和[2] 

机构地区：[1]苏州市市政工程设计院有限责任公司,苏州215007 [2]东南大学市政工程系,南京210096

出　　处：《环境工程学报》2009年第9期1592-1596,共5页Chinese Journal of Environmental Engineering

基　　金：江苏省建设系统科技计划资助项目(JS200308)

摘　　要：利用X射线衍射和能谱分析技术,对富磷上清液铁接触除磷污泥进行了成分与性质分析。结果表明,污泥经陈化作用后其主要成分为FePO4、FeO（OH）和Ca3（PO4）2,各组分的相对质量百分比分别为27.01%、65.52%和7.47%。污泥的沉降性能良好,沉淀6-8 h后总铁浓度＆lt;3 mg/L。分析了污泥资源化利用的方法,提出可将污泥直接用作农肥或土壤改良材料,也可通过高温灼烧、焦硫酸钾溶解、过滤等过程将其分离为铁矿（Fe2O3·nH2O）和磷矿（FePO4和Ca3（PO4）2）后再利用。The component and characters of sludge produced from phosphorus removal by iron-contactor process （PRICP） for anaerobic phosphate-enriched supernatant （APES） were analyzed using X-ray diffraction （XRD） and energy dispersive spectroscopy （EDS）. The result shows that, after an ageing process of sludge from PRICP for APES, the main component are FePO4, FeO（OH） and Ca3 （ PO4 ） 2, and the mass percentages are 27. 01% , 65.52% and 7.47% respectively. The settling performance of sludge is good, the total iron is less than 3 mg/L after a hydraulic retention time of 6 - 8 h. Sludge resource reuse methods were analyzed. These methods include applying sludge to crop production as agricultural fertilizer or soil amendment. In addition, it can be separated into iron resources （Fe2O3 · nH2O） and phosphate resources （FePO4 and Ca3 （PO4 ）2） through high temperature incineration,disulfuric acid potassium dissolving and filtering.

关 键 词：厌氧富磷上清液 铁接触除磷技术 污泥资源化 

分 类 号：X703[环境科学与工程—环境工程]