中水水源景观水中化学除磷的研究

Study on Chemical Phosphorus Removal of Scenic Water with Source of Reclaimed Water

以某总磷(TP)超标的中水水源景观水作为研究对象,采用单独絮凝和氧化絮凝对其除磷小试,考察了氧化絮凝中芬顿除磷的各因素及其一级交互作用影响显著度。结果表明,芬顿除磷各因素中硫酸亚铁投加量(M1)和初始pH值为显著影响因素,反应时间(t)和双氧水投加量(M2)为非显著影响因素,以最优条件M1=650 mg/L,pH值=6.0,t=45 min,M2=0.40 mL/L应用工程,出水ρ(TP)<0.5 mg/L,满足GB/T 18921—2002《城市污水再生利用景观环境用水水质标准》。

Thescenicwaterfromrecycledwaterresourcewiththeoverprooftotalphosphorus （TP） value had been studied. The signal coagulation and the oxidation coagulation had been used for phosphorus removal in lab-scale experiment. The factors of Fenton removal TP in oxidation coagulation and their first-order interaction effect degree were investigated. The results showed that the dosage of FeSO4 （M1） and the initial pH were two significant factors, yet the reaction time （t） and the dosage of H202 （M2） were two non-significant factors, and the optimal conditions were obtained at M1 of 650 mg/L, pH of 6.0, t of 45 min and M2 of 0.40 mL/L. The TP〈 0.5 mg/L of effluent was also achieved at the best conditions in practical engineering, and met the discharge standard of The reuse of urban recycling water -Water quality standard for scenic environment use （GB/T 18921-- 2002）.