摘要
采用新型GS-MBR对校园污水生物强化除磷效果进行了试验研究。小试装置采用全泥龄操作，正常运行92d。SBR运行条件为厌氧5h，好氧5h，沉淀1h，出水与进水合计1h，进水COD、NH4^＋—N、TP和TN分别为202-550mg/L、7．66～16．46mg／L、1．25～3．28mg／L和10．56-38．26mg／L，去除效率平均分别为95，2％、95％、96．4％和50．5％。进水COD／TP=148，出水磷浓度仅为70μg/L。分析表明：进水COD／TP是本装置生物强化除磷的关键因素，在进水COD／TP较高的条件下，无需排泥也能达到强化除磷的目的。此外，膜污染以无机盐为主，酸洗效果优于碱洗。
A new gravitational filtration typed sequencing membrane bioreactor process （GS-MBR） was developed and its performance of enhanced biological phosphorus rernoval of the campus wastewater was also studied in this paper. The lab-scale equipment was operated stably for 92 days with no excess waste sludge discharged. When SBR worked in 5 h-anaerobic, 5 h-aerobic, 1 h settling and 1 h drawing off/drawing in, influent COD, NH4^＋ -N, TP and TN were 202-550 mg/L, 7.66 16.46 mg/L, 1.25-3.28 mg/L and 10.56-38.26 mg/L, respectively, the averaged removal efficiencies were 95.2%, 95%, 96.4% and 50.5%, respectively. When influent COD/TP was 148, effluent TP was only 70μg/L. The results indicated that the ratio of influent COD/TP was the key factor, this process can also achieve enhanced phosphorus removal with no excess waste sludge discharged under the condition of higher influent COD/TP. In addition, the membrane pollutant mainly was inorganic matter and the cleaning effect of the membrane module with HCl solution was better than that with NaOH.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2006年第5期53-56,共4页
Journal of Wuhan University of Technology
