【作者】 贝亦江； 张世萍； 谭明娟； 任伟；

【Author】 Yijiang-bei shiping-zhang Mingjian-Tan wei-ren (Fisheries College of Huazhong Agricultural University,The People’s Republic of China Ministry of Agriculture,Freshwater biodiversity conservation and use of Key Lab,wuhan,430070)

【机构】 华中农业大学水产学院,中华人民共和国农业部,淡水生物多样性保护与利用重点开放实验室；

【摘要】 本实验采用漂浮栽培方式在生物废弃物中种植蕹菜,选择尿液的原液浓度作为试验因素,对种植蕹菜的生物废弃物分别稀释为五个水平:1%、2%、4%、6%、8%,每个水平重复三次。结果表明:经漂浮栽培蕹菜之后污水的理化性质发生较大变化,14d后蕹菜对CODcr的去除率达到了90%以上;对NH3-N的去除率分别为,27.4%、37.1%、64.7%、70.4%、77.1%和89.2%,对TP的去除率为:18.5%、22.5%、32.1%、32.8%、42.7%和46.7%;而在7d后,由于植物对磷吸收能力的有限性、水体表面部分水分的蒸发和水中枯死枝叶导致TP浓度上升,五个水样中的TP浓度都上升。基于污水中CODcr、NH3-N、TP的去除率和蕹菜的长势的综合分析,最适宜漂浮栽培蕹菜净化的生物废弃物的浓度分别为4%。更多还原

【Abstract】 The study on purification of piggery wastewater in floating culture and different concentrations of biological waste 1%、2%、4%、6%、8%were carried out triply in glasshouse.Chemical oxygen demand(CODcr),ammonia-N(NH3-N),total P(T-P) of the piggery wastewater were tested during the growth of plants.The results showed that the purification effects were significant and the removal rate of CODcr in wastewater reached 90%by Ipomoea aquatic.The removal rate of NH3-N by Ipomoea aquatic reached 27.4%,37.1%,64.7%,70.4%,77.1%and 89.2%.The removal rate of TP reached 18.5%,22.5%, 32.1%,32.8%,42.7%,46.7%.After 7d,however,the removal rate of TP increased.Based on the removal rate of CODcr,NH3-N,TP,4%is the best concentration.更多还原