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首页> 外文会议>8th International conference on fate and effects of pulp and paper mill effluents and 10th IWA symposium on forest industry wastewater 2012 >POINT SOURCES OF IMPACT ON THE BIOBIO RIVER, CHILE: PULP AND PAPER MILL EFFLUENTS AND SEWAGE TREATMENT PLANT EFFLUENTS, SIMILAR MAGNITUDE RESPONSES?
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POINT SOURCES OF IMPACT ON THE BIOBIO RIVER, CHILE: PULP AND PAPER MILL EFFLUENTS AND SEWAGE TREATMENT PLANT EFFLUENTS, SIMILAR MAGNITUDE RESPONSES?

机译：对智利比奥比奥河的影响的波源：纸浆和造纸厂废水和污水处理厂废水，类似的反应？

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The Biobi'o river basin represents an important source of economic development. The productive sectors are forestry activities, along with metallurgical, chemical, oil refineries, textile, pulp and paper mill discharges and hydropower. This river provides multiple ecosystem services such as, drinking water, irrigation water, urban discharges receiver and industrial, power generation, recreation and fishing, it is extremely important as environmental relevance to support the various services it provides. The effects of exposure to pulp and paper mill discharges on fish have been studied since 2001 in the Biobio river basin, showing effects of endocrine disruption (increased levels of vitellogenin protein and gonadal maturation in sexually immature fish), increased levels MFO activity and physiological indexes (liversomatic and gonadosomatic index) and more recently in the Itata river with wild native fish populations showing effects of endocrine disruption (increase in 17β-estradiol and decrease of testosterone/11ketotestosterone gonadal production). The Biobio river not only receives pulp and paper mill discharges, there are other point sources discharges, such as sewage treatment plant effluent. Current results of juvenile individuals of O. mykiss exposed to different concentrations (0%, 12,5%, 25%, 50%, 75% and 100%) of treated sewage effluent, showed significant increase (p＜ 0,05) in the liversomatic index and induction of gonadal maturation, with 20% of oocytes in state Ⅲ in sexually immature fish exposed to 100% effluent, ending the exposure time for 21 days. The results show similarities in the responses of biomarkers, but the responses offish exposed to treated sewage effluent show lower values than fish exposed to pulp and paper mill discharges.
机译：比奥比奥河流域是经济发展的重要来源。生产部门是林业活动，以及冶金，化学，炼油厂，纺织，纸浆和造纸厂的排污以及水力发电。这条河提供多种生态系统服务，例如饮用水，灌溉水，城市污水接收站以及工业，发电，娱乐和捕鱼，这对支持其提供的各种服务的环境意义极为重要。自2001年以来就在比奥比奥河流域研究了纸浆和造纸厂排放物对鱼类的影响，显示出内分泌干扰（性不成熟鱼中卵黄蛋白原蛋白含量和性腺成熟水平增加），MFO活性水平和生理指标增加的影响（肝体和性腺体指数），最近在Itata河中，野生野生鱼类种群表现出内分泌干扰作用（17β-雌二醇增加和睾丸激素/ 11酮睾丸激素性腺分泌减少）。比奥比奥河不仅接收纸浆和造纸厂的排放物，还有其他点源排放物，例如污水处理厂的废水。暴露于不同浓度（0％，12.5％，25％，50％，75％和100％）处理过的污水中的米氏曲霉幼体的最新结果表明，其显着增加（p ＜0.05）性未成熟鱼的肝体指数和性腺成熟的诱导，其中有20％的卵母细胞处于Ⅲ期状态，暴露于100％的流出物中，结束了暴露时间21天。结果表明，生物标志物的响应相似，但是暴露于处理过的污水中的鱼的响应值低于暴露于纸浆和造纸厂排放物中的鱼。

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