碳素纤维泛氧化塘治理高寒地河水的试验研究

采用碳素纤维生态草填料和间歇曝气强化的泛氧化塘对长春新凯河河水展开了异位式治理的试验研究,考察了单一的填料强化和"间歇曝气+填料强化泛氧化塘"对污染物的年度去除效果。试验过程中发现COD、NH4+-N、TP的去除效果受温度的影响比较明显,四季平均去除率分别为16.85%~34.19%、13.6%~53.14%、9.22%~26.08%;NH4+-N去除率同时受DO的影响也很明显,夏季间歇曝气可提高NH4+-N去除率27%左右。全年监测结果表明:曝气强化作用在夏季最为明显,在停留时间为36 h、曝气时间为18 h/d、曝气量为0.4 m3/min时,碳素纤维曝气泛氧化塘对COD、NH4+-N、TP的平均去除率分别为34.19%、53.14%、26.08%,这表明采用碳素纤维曝气泛氧化塘对受污染河水的治理是可行的。

Treatment of Alpine Region River by Carbon Fiber Pan-oxidation Pond

Annual removals of pollutants in pan-oxidation pond strengthened only by fillers and by fillers as well as intermittent aeration were studied in the experimental ectopic repair of Xinkai River,Changchun.It was found that removal rates of COD,NH4+-N,TP were obviously affected by temperature,with average seasonal removal rates as 16.85%~34.19%,13.6%~53.14% and 9.22%~26.08% respectively,and removal rate of intermittent aeration pond was 27% higher than that of non-aeration pond for NH4+-N in summer.Results of the whole year showed that the strengthen effect of aeration was the most obvious in summer,under the conditions as HRT 36 h,aeration time 18 h/d and aeration rate 0.4 m3/min,the removal rates of COD,NH4+-N and TP could reach to 34.19%,53.14% and 26.08% after setting fillings and aeration,which indicated that the pan-oxidation pond strengthened by aeration and biological carriers is a feasible technique for the purification of water body in the alpine region.