Enhanced phosphorus removal in a waste stabilization pond system with blast furnace slag filters
Enhanced phosphorus removal in a waste stabilization pond system with blast furnace slag filters
复制标题
使用高炉矿渣过滤器强化废物稳定池系统中的磷去除
DOI：
10.5004/dwt.2009.366
复制
发表时间：
2009
影响因子：
1.1
通讯作者：
D. Mara
中科院分区：
文献类型：
--
作者：
M. C. Valero;M. Johnson;T. Mather;D. Mara
在这项工作中，三级水平流高炉矿渣（BFS）过滤器进行了试验室和现场条件下的除磷。实验室实验进行了在一个实验室规模的BFS过滤器的磷吸附能力在平衡条件下使用P-加标水。在现场，中试规模的BFS过滤器的性能进行了监测，磷去除的中试规模的WSP系统位于Esholt（布拉德福德，英国），其中包括一个初级兼性池和二级曝气岩石过滤器（ARF）的串联的最终流出物。吸附容量（q）的结果表明，BFS对无机磷物种有很高的亲和力，它可以去除高达30克P/千克BFS，但q值强烈依赖于初始P浓度。现场测试的中试规模的BFS过滤器比实验室规模的过滤器在更长的时间内（<2 mg P/L）表现得更好，尽管后者接受相同的水力负荷和P负荷（分别为1.8 m3/m3 d和18 g P/m3 d）。实验室和现场试验结果均表明，BFS过滤器是一种合适的低成本技术，可用于小型污水处理系统的除磷升级。
In this work a tertiary horizontal-flow blast furnace slag (BFS) filter was tested for phosphorus removal under laboratory and field conditions. Laboratory experiments were conducted in a benchscale BFS filter for phosphorus adsorption capacity at equilibrium conditions using P-spiked water. On-site, the performance of a pilot-scale BFS filter was monitored for phosphorus removal from the final effluent of a pilot-scale WSP system located in Esholt (Bradford, UK), which comprises a primary facultative pond and a secondary aerated rock filter (ARF) in series. Adsorption capacity (q) results showed that BFS has high affinity for inorganic P species and it can remove up to 30 g P/ kg BFS; however, q values are strongly dependent on the initial P concentration. The pilot-scale BFS filter tested on-site performed better for longer (<2 mg P/L) than the laboratory-scale filter, even though despite the latter received the same hydraulic and P loadings (1.8 m 3 /m 3 d and 18 g P/ m 3 d, respectively). Both the laboratory and field results showed that BFS filters are an appropriate low-cost technology to upgrading small wastewater treatment systems for phosphorus removal.