摘要
采用水生植物、人工填料和固定化氮循环细菌技术(INCB),在秋冬季节对新沂河进行原位污染治理和生态修复实验。结果表明,在温度降低前,水生植物微生物技术净化污染水体效果很好,对化学需氧量(CODMn)、总氮(TN)、铵态氮(NH+4N)和总磷(TP)的去除率最高可以分别达到50.2%、29.8%、49.3%和57.9%。在低温季节,其净化效果剧烈下降,对CODMn、TN、NH+4-N和TP的去除率最低分别只有7.4%、0.6%、1.5%和4.2%。在低温条件下,与水生植物微生物技术相比,INCB微生物技术可以更有效稳定地净化受污染的水体,对CODMn、TN、NH+4-N和TP的去除率平均分别为31.9%、21.3%、23.3%和21.3%。将水生植物微生物与INCB微生物技术相结合应用,可在一定程度上解决秋冬季节污染河流修复效果不理想的问题。
A technique consisting of aquatic plants, artificial fillers and immobilized nitrogen cycling bacteria （INCB） was adopted in situ purifying contaminated Xinyi River in fall and winter seasons. The results showed that before temperature decreased, aquatic plant-microorganism performed so well on purifying contaminated water that the best removal rates of chemical oxygen demand （CODMn）, total nitrogen （ TN ）, NH^＋4 -N and total phosphorus （TP） were estimated to be 50. 2%, 29. 8%, 4.9. 3% and 57.9%, respectively. In low temperature season, however, the effectiveness decreased so dramatically that the least removal rates of CODMn, TN, NH^＋4 -N and TP were only 7.4%, 0. 6%, 1.5% and 4. 2%, respectively. In the conditions of lower temperature, compared with aquatic plant-microorganism, purifying contaminated water with INCB-microorganism is more stable and effective. The average removal rates of CODu,, TN, NH^＋4 -N and TP were 31.9%, 21.3%, 23.3% and 21.3%, respectively. Therefore, combining plant-microorganism with INCB-microorganism techniques, the effectiveness of remediation of contaminated river in fall and winter seasons was improved to some extent.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
2005年第3期58-62,共5页
Journal of Nanjing Agricultural University
基金
江苏省环保厅科技项目
关键词
水生植物
人工填料
固定化氮循环细菌
河流
污染治理
aquatic plants
artificial fillers
immobilized nitrogen cycling bacteria （INCB）
river
pollution control
