Wong M H, Luk K C, Liu W K, Kwan S H
Acta Anat (Basel). 1979;103(2):130-3. doi: 10.1159/000145003.
The effects of sewage sludge on the survival of the common carp, Cyprinus carpio, were investigated. It was noted that, when the concentrations of the sludge used for rearing carp exceeded 0.6%, the fish died within 42 days, whereas those reared in 0.2% sludge remained alive and healthy during the trial period. The body and the gills of the dead fish were covered by a veil-like film which looked like coagulated mucus and was formed by the heavy metal ions from the sludge reacting with some constituents of the mucus secreted by the gill. The histopathological symptoms of the various organs further demonstrated that internal injury in liver and kidney was also an important feature of the intoxicants as well as external damage, especially the particles observed around the gills. It was concluded that the optimum concentration of sludge to any species of fish should be determined by testing a series of concentrations before using it as a supplementary fish feed or fish pond fertilizer.
研究了污水污泥对鲤鱼（Cyprinus carpio）存活的影响。值得注意的是，当用于饲养鲤鱼的污泥浓度超过0.6%时，鱼在42天内死亡，而在0.2%污泥中饲养的鱼在试验期间保持存活且健康。死鱼的身体和鳃被一层面纱状薄膜覆盖，这层薄膜看起来像凝结的黏液，是由污泥中的重金属离子与鳃分泌的黏液中的某些成分反应形成的。各个器官的组织病理学症状进一步表明，肝脏和肾脏的内部损伤以及外部损伤也是中毒的重要特征，尤其是鳃周围观察到的颗粒。得出的结论是，在将污泥用作补充鱼饲料或鱼塘肥料之前，应通过测试一系列浓度来确定适合任何鱼类的污泥最佳浓度。
