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Domènec Jolis Azalea A Mitch Matina Marneri Chu-Fei Ho 《Water environment research》2007,79(5):472-478
Increased anaerobic selector hydraulic retention times (HRTs) in a high-purity oxygen activated sludge process resulted in an increase in soluble orthophosphate release and biodegradable chemical oxygen demand removal, confirming that enhanced biological phosphorus removal occurs at aeration solids retention times (SRTs) below 1.7 days. Under operating conditions that included biological foam trapping and recycling, an anaerobic selector with HRTs higher than 55 minutes resulted in a decrease in filament counts and effective foam control. Effective norcardioform control is achieved through the combination of metabolic selective pressure and increased soluble organic substrate removal in the anaerobic selector and low aeration SRT. 相似文献
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亘古以来,我们就一直在探讨生命这个话题一一源地,时间,环境。各种版本,各种说法,充分显示了人类对生命探索无尽的热情。春去春又回。又到万物苏醒的季节,就让我们分一颗心的几分之一,在寒冷的冰川环境里走一遭,看看那个极湍环境里,曾经上演过几个有关生命的故事,又是以何种姿态出现。在这个春天里,这或许会带给你另一种生命形式的惊奇与震撼。 相似文献
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