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首页> 外文期刊>Aquaculture Research >Assessment of pollutant loads discharged from aquaculture ponds around Taihu Lake, China.
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Assessment of pollutant loads discharged from aquaculture ponds around Taihu Lake, China.

机译：太湖周围水产养殖池塘排放的污染物负荷的评估。

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摘要

China is the world's largest producer of aquatic animals, and the Taihu Lake area is one of the most important contributors within China. To obtain the basic information needed to minimize environmental impacts of aquaculture, the water quality and volume of effluents from 48 ponds used for raising crab, shrimp, river prawn, black carp, grass carp and turtles near Taihu Lake were monitored, and their pollutant loads were estimated. Effluent volumes ranged from 12.7+or-1.7 (crab) to 50.9+or-15.8 (turtle) thousand tons ha-1 year-1. The concentration of pollutants in the effluents often exceeded acceptable limits for Taihu Lake. Crab ponds produced the lowest gross loads of total nitrogen, total phosphorus, chemical oxygen demand and total suspended solids, whereas turtle ponds produced the highest. The net loads of monitored pollutants comprised only 4-53% of the gross loads in crab ponds, but >50% in other species ponds. Results indicate that the pollutant loads discharged from aquaculture ponds around Taihu Lake are mild, but precautions are still needed to treat the wastewater. Connecting the ponds in series with crab ponds downstream is a feasible way to decrease pollutant loads.
机译：中国是世界上最大的水生动物生产国，太湖地区是中国最重要的贡献者之一。为了获得使水产养殖对环境的影响最小化所需的基本信息，对太湖附近用于养蟹，虾，河虾，黑鲤鱼，草鱼和海龟的48个池塘的水质和出水量进行了监测，并对其污染物负荷进行了监测。被估计。出水量从12.7+或-1.7（螃蟹）到50.9+或-15.8（乌龟）千吨ha -1 年 -1 。废水中的污染物浓度经常超过太湖可接受的限值。蟹塘的总氮，磷，化学需氧量和总悬浮物的总负荷最低，而turtle塘的总负荷最低。所监测污染物的净负荷仅占蟹塘总负荷的4-53％，而其他物种塘中的净负荷则超过50％。结果表明，太湖附近水产养殖池排放的污染物负荷较轻，但仍需采取预防措施处理废水。将池塘与下游的蟹塘串联起来是减少污染物负荷的可行方法。

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