| According to the characteristic of duck-slaughter waster water,the experiment done some device in traditional BAF technology,put an anoxia zero before BAF, makes the traditional BAF to anoxia-oxygen BAF.The experiment studied duck-slaughter waster water,the results show that:1)Anoxia-oxygen BAF for duck-slaughter waster water,the remove effect on COD are more than 79.3%;the remove effect on NH3-N has something to do with HRT, when HRT is 4.0h,2.8hå'Œ1.25h,the remove effect is 68.6%,47.2%and 26.0%.2)The best ratio of gas to liquid is 8:1 in the experiment,As the ratio higher the remove effect on COD and NH3-N become higher.3)Anoxia-oxygen BAF has good effect on COD impact,when COD volumetric loading change from 2.5kg/(m3.d)to 8.5kg/(m3.d),the remove effect on COD are more than 79.3%;when NH3-N volumetric loading change from 0.13kg/(m3.d)to 0.88kg/(m3.d),the remove effect on NH3-N has an evident descend trend.4)The study showed that:sewage back flow has a good effect on COD and NH3-N remove,but when the sewage back flow ration more than 2:1,the remove effect on NH3-N has a litter lower.5)The experiment study the temperature effect on BAF,when the temperature reduced to 5～12℃,the remove effect of COD and NH3-N have an evident lower, especially to NH3-N. |
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