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The effect of the DO concentration on the stability of the shortcut nitrification was studied. The static test is done with SBR reactor. Reaction time reduced with the DO concentration raised appropriately, but DO in excess, the shortcut nitrification system will be damaged by the analysis of the impact of DO concentration on ammonia removal, nitrite nitrogen accumulation in shortcut nitrification...
Bending of a single-crystalline simply supported nano-beam is simulated with a molecular dynamics method. By changing the value of the span, the width and the depth of the cross section, and by varying the uniformly distributed load from 3.47 □10-4 to 11.6GPa, the results show that the span, the width, the depth and the uniformly distributed load all have effect on the vertical displacement (deflection)...
In this study, the different sizes of the PAC are used to reduce transmembrane pressure (TMP) and prolong cycle of operation in IMBR (Integrate Membrane Biological Reactor). The ranges of size of the powdered activated carbon(PAC) are from 40-60 mesh, 80-100 mesh to 100-200 mesh. As a result, The PAC of 80-100 mesh can effectively reduce membrane fouling. And also, the carbon-slug ratio of 1:4 is...
The simultaneous biological removal of iron, manganese and ammonia from simulated contaminated groundwater was studied by biological aerated filter using dual layer ceramsite as support material in the lab. The system was simultaneously inoculated with iron and manganese oxidizing bacteria, nitrifying bacteria and nitrification bacteria and a series of experiments was performed to investigate simultaneous...
In this study a orthogonal text was performed, in order to investigate the main factor for simultaneous biological removal of iron, manganese and ammonium, and offer theoretical support for simultaneous biological removal of iron, manganese and ammonium from the micro-contaminants groundwater. Under the condition of static text, the concentration of iron, manganese, ammonia and dissolved oxygen content...
Focusing on the special need of nano-engineering, an improved neighbor list algorithm for the ultra-large scale molecular dynamics (MD) simulation is proposed. The new algorithm is attempting to fully combine the advantages of both Verlet table and cell-linked list algorithms to accelerate the speed of neighbor list construction and update. In order to meet the requirement of nano-engineering that...
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