Method for removing phosphates in water body on basis of sulfuric-acid-modified fly ash brick powder (S-FABP)

The invention discloses a method for removing phosphates in a water body on the basis of sulfuric-acid-modified fly ash brick powder (S-FABP). The method comprises the following steps: (1) dissolving KH2PO4 in deionized water to prepare a 5-50 mg/L phosphate solution; (2) weighing 2.0-4.0g of the S-FABP, respectively adding into 100mL of phosphate solution, and carrying out water-bath oscillating reaction for 5-120 minutes; (3) centrifuging the oscillated solid-liquid mixture, filtering and separating to obtain a solution; and (4) determining the phosphorus concentration in the solution supernate obtained in the step (3). The preparation process is simple and economical, and has high phosphorus removal efficiency. 本发明公开了种基于硫酸改性粉煤灰砖块粉末S-FABP去除水体中磷酸盐的方法，包括如下步骤：(1)用KHPO溶于去离子水配置为浓度5-50mg/L的磷酸盐溶液；(2)称取2.0-4.0g硫酸改性粉煤灰砖块粉末S-FABP分别投加到100mL磷酸盐溶液中水浴震荡反应5-120min；(3)震荡后将固液混合物离心、过滤分离后，制得溶液；(4)将步骤(3)所得的溶液上清液中磷的浓度进行测定。本发明制备过程简单经济，磷去除效率高。