微纳米气泡改善杭州城市河道水生态环境的工程应用研究

Study on Improving Water Ecological Environment of Hangzhou Urban River with Micro-nano Bubble Technology

于2013年4月至6月在杭州城市河道对微纳米气泡改善河道水生态环境进行了持续的原位监测实验。结果表明,与对照区相比,试验区水体温度平均升高0.7℃,pH增大0.2,溶解氧增加1.0 mg/L,而TDS浓度降低42 mg/L;水质污染指标高锰酸盐指数、总氮、氨氮、总磷平均浓度分别降低了8.45 mg/L、6.78 mg/L、8.90 mg/L和0.58 mg/L。由此可推测微纳米气泡在一定程度上能有效净化水质,为恢复良好水生生态环境提供新的方法和技术手段。

This research uses in-situ water purifying technology to process the water of inflowing rivers of Hangzhou by using micro-nano bubble generator in April 2013 to June.The results showed that compared with control area,the average values of the water temperature,pH and dissolved oxygen in experimental area increased by 0.7℃,0.2 and 1.0 mg/L respectively,while the mean value of total dissolved solids decreased to 42 mg/L.Moreover,the values of water pollution index of the permanganate index concentration,total nitrogen concentration,ammonia nitrogen concentration and total phosphorus concentrations decreased by 8.45 mg/L,6.78 mg/L,8.90 mg/L and 0.58 mg/L,respectively.It is indicated that the water quality could be purified by micro-nano technology which provide a new method and technique to recover the aquatic environment.