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Protozoa and metazoa relations to technological conditions of non-woven textile filters for wastewater treatment

机译：原生动物和后生动物与无纺布废水处理技术条件的关系

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摘要

The objective of this study was a preliminary identification of basic groups of micro-organisms in the cross-sectional profile of geotextile filters for septic tank effluent (STE) treatment and their relations to technological conditions. Reactors with textile filters treating wastewater were investigated on a semi-technical scale. Filters were vertically situated and STE was filtered through them under hydrostatic pressure at a wastewater surface height of 7-20 cm. Filters were made of four layers of non-woven TS 20 geotextile of 0.9 mm thickness. Various groups of organisms were observed; the most abundant group comprised free-swimming and crawling ciliates, less abundant were stalked ciliates and the least numerous were nematodes. The individual counts of all groups of micro-organisms investigated during the study were variable according to time and space. The high abundance of Opercularia, a commonly observed genus of stalked ciliates, was related to the high efficiency of wastewater treatment and dissolved oxygen concentration of about 1.0 g/m(3). Numbers of free-swimming and crawling ciliates had a tendency to decrease in relation to the depth of filter cross-sectional profile. The variability in counts of particular groups of organisms could be related to the local stress conditions. No correlation between identified organism count and total mass concentration in the cross-sectional filter profile was found.
机译：这项研究的目的是初步确定化粪池出水（STE）处理用土工织物过滤器的横截面轮廓中的基本微生物及其与技术条件的关系。具有纺织过滤器的处理废水的反应器已在半技术规模上进行了研究。垂直放置过滤器，并在静水压力下于7-20 cm的废水表面高度通过STE过滤。过滤器由四层厚度为0.9 mm的无纺TS 20土工织物制成。观察到各种生物。最多的一组是自由游动和爬行的纤毛，很少的是茎纤毛，最少的是线虫。在研究过程中调查的所有微生物组的个体计数根据时间和空间而变化。经常观察到的纤毛虫属的丰富的Opercularia与废水处理的高效率和约1.0 g / m的溶解氧浓度有关（3）。自由游动和爬行的纤毛的数量相对于过滤器横截面轮廓的深度具有减少的趋势。特定生物群的数量变异可能与局部胁迫条件有关。在横截面过滤器轮廓中未发现已鉴定的生物数量与总质量浓度之间的相关性。

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