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首页> 外文期刊>Journal of water resource and protection >Treatment of Bullfrog Farming Wastewater in a Constructed Wetland
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Treatment of Bullfrog Farming Wastewater in a Constructed Wetland

机译：牛蛙养殖废水在构建湿地处理

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摘要

The aim of this study was to install and assess the efficiency of a constructed wetland for wastewater treatment from bullfrog farming {Lithobates cates-beianus) at fattening growth phase. Water detention time was not controlled since wastewater input flow varied according to the biomass of animals maintained in stalls. The study was divided into two phases, with higher and lower bullfrog biomass respectively for phase I and II. A higher removal of nitrite, biochemical oxygen demand, and thermotolerant coliforms was observed at phase I whereas a higher removal of turbidity, nitrate, total phosphorus, total suspended solids, total dissolved solids, and chlorophyll a occurred at phase II. Wastewater treatments using constructed wetland systems with high organic load require a higher water detention time for a better load removal. The treatment effect was positive since this wastewater flowed directly into fishponds or streams, which might promote eutrophication. Thus, wastewater treatment is essential to minimize the impact caused by frog farming on receiving water bodies, promoting the sustainability of this activity in Brazil.
机译：本研究的目的是安装和评估由牛奶生长阶段的牛蛙农业{岩胶酸盐酸盐纤维群岛的废水处理的湿地的效率。不控制水滞留时间，因为废水输入流量根据在档位维持的动物的生物量而变化。将该研究分为两相，分别为较高和低牛蛙生物量，分别用于I和II期。在II期观察到较高的亚硝酸盐，生物化学需氧量和热调节性大肠菌体，而在II期发生浊度，硝酸盐，总磷，总悬浮固体，总溶解固体和叶绿素A的较高。使用具有高有机载荷的构造湿地系统的废水处理需要更高的水滞后时间，以更好地去除载荷。治疗效果是阳性的，因为这种废水直接流入鱼塘或溪流，这可能促进富营养化。因此，废水处理对于最大限度地减少青蛙养殖对接收水体造成的影响至关重要，促进巴西这项活动的可持续性。

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