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首页> 外文期刊>Aquatic Sciences >Macroinvertebrate interactions stimulate decomposition in WWTP effluent-impacted aquatic ecosystems
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Macroinvertebrate interactions stimulate decomposition in WWTP effluent-impacted aquatic ecosystems

机译：Macroinvertebretebrys相互作用刺激WWTP污水影响水生生态系统中的分解

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摘要

Aquatic ecosystems worldwide are impacted by an influx of nutrients and sludge particles from wastewater treatment plant (WWTP) effluents, leading to a degradation of benthic habitats and a loss of associated macroinvertebrate taxa. Hence, in habitats impacted by WWTPs, only a few tolerant macroinvertebrate taxa remain. These tolerant detritivore macroinvertebrate taxa play an important role in the degradation of organic matter, and biotic interactions between these taxa may either enhance or reduce the rate of sludge degradation. Therefore, the aim of the present study was to examine if the interaction between asellids and tubificids, both highly abundant in systems impacted by WWTP effluent, enhances the degradation of sludge. To this end, growth and reproduction of both taxa, sludge degradation and nutrient concentrations in the overlying water were measured in a 28-day laboratory experiment, subjecting WWTP sludge to 4 treatments: a control without macroinvertebrates, a tubificid, an asellid, and an asellid + tubificid treatment. Sludge degradation, phosphate concentration in the overlying water and asellid reproduction were enhanced when asellids and tubificids were jointly present, whereas tubificid growth and reproduction were hampered in comparison to the tubificid treatment. Hence, our results suggest that the biotic interactions between these tolerant detritivores stimulate sludge degradation, and thus possibly mitigating the negative impacts of WWTP-derived sludge particles on the benthic environment.
机译：全球水生生态系统受到废水处理厂（WWTP）流出物的营养和污泥颗粒的影响，导致底栖栖息地的降解和相关的大型狂犬群。因此，在受WWTPS影响的栖息地，仍然只有少数耐受的大型植物分类群。这些耐受性Detrivervore Macroinvertebrete Taxa在有机质的降解中发挥着重要作用，并且这些分类群之间的生物相互作用可以增强或降低污泥降解的速率。因此，本研究的目的是检查Asellids和Cabifics之间的相互作用，在由WWTP流出物影响的系统中高度丰富，增强了污泥的降解。在此目的中，在28天的实验室实验中测量了覆盖物中含有含量的增长和繁殖，覆盖物中的含水量，使WWTP污泥进行4种治疗方法：没有大型脊椎椎间型的对照，一个Cubificind，Asellid和一个asellid +肿瘤治疗。当共同存在叶片和肿瘤体，污泥降解，覆盖水中磷酸盐浓度和瘦弱的繁殖，而且与大氧化治疗相比，弱化水分和肿瘤生长繁殖。因此，我们的结果表明，这些耐受性Detrivitivores之间的生物相互作用刺激污泥降解，从而可能减轻WWTP衍生污泥颗粒对底栖环境的负面影响。

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