富磷上清液铁接触除磷工艺及影响因素  

Technics and influencing factors of phosphorus removal by iron-contactor process for anaerobic phosphate-enriched supernatant

作　　者：陆敏博[1] 王世和[1] 

机构地区：[1]东南大学市政工程系,南京210096

出　　处：《环境工程学报》2008年第9期1163-1168,共6页Chinese Journal of Environmental Engineering

基　　金：江苏省建设系统科技计划项目(JS200308)

摘　　要：设计了一种由铁碳合金和钝态不锈钢作为电化学腐蚀两极系统的铁接触除磷反应器，首次尝试将铁接触除磷技术用于厌氧富磷上清液的处理。通过对模拟富磷上清液除磷效果的测定与分析，详细探讨了铁接触除磷工艺的影响因素，结果表明，曝气方式宜为间歇曝气，且最优曝气／停歇时间为60min／30min；在进水总磷浓度为30～50mg／L范围内，随着磷浓度的升高，总磷去除率随之下降；而随着曝气强度、pH值的升高及水力停留时间的延长，总磷去除率随之升高；随着水温的升高，总磷去除率有波动，水温为27℃时，总磷去除率最大。将铁接触除磷工艺运用到侧流除磷方法中，最终可使出水总磷浓度达到国家《城镇污水处理厂污染物排放标准》（GB18918—2002）中的一级（A）标准。The technics of phosphorus removal by iron-contactor process （PRICP） for anaerobic phosphate- enriched supernatant （APES） is proposed for the first time. A PRICP reactor containing a bipolar system of iron carbon and passive stainless steel is designed for this purpose. Through analyzing the effect of phosphorus remov- al by experiment on the simulating APES, the influencing factors of phosphorus removal in the process were in- vestigated in detail. The result shows that, intermittent aeration method is suitable, with optimal aeration time to off time being 60 min/30 min; when TP in the influent falls in the range of 30 to 50 mg/L, TP removal rate de- creases with the increase of TP in the influent while increases with the increase of aeration intensity, pH and HRT; TP removal rate fluctuates with the increase of water temperature, and maximum TP removal rate is obtained at 27℃. TP of ultimate effluent is qualified to Standard A of ＂Discharge Standard of Pollutants for Munici- pal Wastewater Treatment Plant＂ （GB18918-2002） when PRICP is applied to side-stream phosphorus removal.

关 键 词：厌氧富磷上清液 铁接触除磷技术 电化学腐蚀 

分 类 号：X703[环境科学与工程—环境工程]