火山石固载微生物对河涌流动水体营养盐去除效果研究

The Nutrients Removal Efficiency by Pelelith-immobilized Microbe in Treatment of Flowing Water in Urban Rivers

以火山石为载体,将芽孢杆菌,硝化细菌等复合菌固定在火山石上,研究火山石固载微生物在河涌流动水体中对总磷、氨氮和化学需氧量的去除效果。结果表明:在水体流量为0.164 m^3/h,水力停留时间为5.365 h条件下,火山石固载微生物对河涌流动水体中氨氮和化学需氧量和总磷有较好去除效果,COD去除率维持在6.89%~25.3%之间,氨氮去除率维持在2.38%~52.7%之间,总磷的去除率维持在4.72%~28.14%之间,有时,微生物对其营养盐去除效果不明显,可能与自身特点及环境因子有关。总体来说该试验结论可作为工程指导依据,在今后应用于污染河涌水质治理。

To understand the removal efficiency of total phosphorus （TP）, ammonium nitrogen （NH3-N） and chemical oxygen demand （COD） by pelelith immobilized microbe in treatment of flowing water in the urban river pelelith immobilized microbe, mixed bacteria, such as bacillus and nitrobacteria, were immobilized in pelelith. The results showed that the highest removal efficiency of NH3-N （2.38 %-52.7 %） and COD （6.89 %-25.3 %） andTP （4.72 %-28.14 %） was attained at the discharge of 0.164 m3/h and the water retention time of 5.365 h.Sometimes no evident removal efficiency was observed forthe nutrients and it was likely related to self-characteristics and environment factors. In conclusion, pelelith-immobilized microbe can be served as engineering guidance and used for improving water environment of polluted urban rivers.