Application of a novel Design for Air Lift Reactor In Waste Water Treatment | Author : Ali Abdul Rahman Al Ezzi, Ghazi Faisal Najmuldeen | Abstract | Full Text | Abstract :The objective of this study is to design different treatment technologies to identify cost effective and technically feasible alternatives for the removal of (MTBE) from drinking water experimental rig and bench-scale studies using granular activated carbon (GAC) and hydrogen peroxide (H2O2) were conducted to observe the treatability of MTBE in synthetic wastewater. An experimental rig was built up that consist of air lift loop reactor was constructed with draft tube of 9 cm diameter and 1.25 m in height extends vertically in the center of and 1.5 m height of outer rectangular Plexiglas box (29 x 15.5 cm) and the solid particles{granular activated carbon (GAC) } were put in the annulus and gas was spared through the inner draft tube using a multi hole pouros distributor whereas liquid flowed through the down comer and a stable circulating liquid flow is induced by the density difference between the aerated liquid in the draught tube and the annulus . The draft tube is constructed to be open at both ends and was fitted with three supports at the upper, medium and the lower end of the column so as to locate it in central position at any distance above the base . A mechanism is provide to maintain constant liquid level inside the reactor , the mechanism to maintain constant liquid level is a valve or a raised outlet tube raised to the level of the liquid present in the reactor. The adsorption , stripping and oxidation processes take place during the circulation of oxidized waste water through (GAC) bed in annulus and this step give more time to complete the stripping, oxidation and adsorption processes in high efficiency. The major finding suggests that the air flow rate at 7 L/min and a molar ratio of MTBE/H2O2 equal 20 over the synthetic wastewater caused a greater removal of MTBE. From experimental observations, 90% of MTBE removal from synthetic wastewater. |
| Performance Evaluation of Composite Network Security Situation Assessment Using HRCAL Approach | Author : Ms. Ankita Patil, Mr. Vijay Prakash | Abstract | Full Text | Abstract :Internet attacks area unit on the increase and create serious security threats to enterprise networks, industrial websites and to the lots of home web users. Web attacks have become less assailable and complicated with time. Network traffic visualization tools have with successfully enabled security analysts to know the character of traffic gift in a very network. Conversely, these tools believe principally on human experience to get anomalies in traffic and attack patterns. Human capability to grasp large amounts of time-varying data is proscribed and network visualization tools want additional visual aid to extract attention-grabbing patters from such massive and complicated knowledge sets [1]. By visualizing a group of straightforward graph patterns, analysts will place along visual items of knowledge sent by these smaller patterns and might find out about larger and a lot of complicated patterns.Powerful and versatile specification will work on the limitation of un-uniform pattern specification formats existing within the current tools. Therefore, our approach gives way to an iterative visual investigation and allows fast discovery of a lot of subtle attack patterns and abnormal options that area unit otherwise undetectable by normal network traffic visualization tools |
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