von Sperling M, Chernicharo C A L, Soares A M E, Zerbini A M
Federal University of Minas Gerais, Dept. of Sanitary and Environmental Engineering, Av. Contorno 842 - 7 andar, 30110-060 Belo Horizonte, Brazil.
Water Sci Technol. 2003;48(2):113-20.
The paper evaluates and models helminth eggs removal in a combined UASB (Upflow Anaerobic Sludge Blanket) reactor-maturation pond system (one baffled and one unbaffled pond in parallel). The system is comprised of demonstration-scale units, treating actual domestic sewage from Itabira city, Brazil. The paper addresses the following points: (i) removal of helminth eggs from the wastewater in the system; (ii) comparison of the observed removal efficiency with the predictions using the Ayres et al. model; (iii) accumulation of helminth eggs in the sludge; (iv) viability of eggs in the sludge; (v) distribution of helminth species in the sludge. The removal efficiency of helminth eggs from the wastewater in both ponds was 100% for most of the time (0 counts in the final effluent). The predictions of helminth eggs removal according to the Ayres et al. model can be considered reasonable. After one year of operation, 88% of the eggs in the sludge remained viable. Helminth eggs counts in the sludge tended to decrease along the baffled pond length (from first to last compartment). The prevailing helminth species found in the sludge from both ponds was Ascaris lumbricoides.
本文评估并模拟了在UASB（上流式厌氧污泥床）反应器-熟化池组合系统（一个有折流板的和一个无折流板的池子并联）中蛔虫卵的去除情况。该系统由示范规模的单元组成，处理来自巴西伊塔比拉市的实际生活污水。本文探讨了以下几点：（i）系统中废水中蛔虫卵的去除；（ii）将观察到的去除效率与使用艾尔斯等人的模型所做的预测进行比较；（iii）蛔虫卵在污泥中的积累；（iv）污泥中虫卵的活力；（v）污泥中蛔虫种类的分布。在大多数时间里，两个池子中废水中蛔虫卵的去除效率均为100%（最终出水无虫卵计数）。根据艾尔斯等人的模型对蛔虫卵去除的预测可被认为是合理的。运行一年后，污泥中88%的虫卵仍具活力。沿着有折流板的池子长度方向（从第一个隔室到最后一个隔室），污泥中的蛔虫卵计数趋于减少。两个池子的污泥中发现的主要蛔虫种类是蛔虫。
