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CO2, CH4, H2S, NH3 and other gases are generated in sewer by anaerobic microbial degradation. The corrosion of sewer gases is not only facilities but also easily cause an explosion or poisoning resulting casualties, seriously affects people's daily life and health. In this paper, the city sewer wastewater by simulating the anaerobic degradation process was researched. And the effects of temperature...
With sewage plant aeration tank activated sludge as mixed bacteria source, Nitrobenzene concentration gradient of the chlorine used to increase the aerobic bacterial degradation of oscillating bottle method of domestication and enrichment culture. Separation and purification out of one can right-chloronitrobenzene as the sole carbon, nitrogen and energy of bacteria. Through physiological and biochemical...
In this paper, the domestication of the activated sludge by which nitrobenzene can be degraded in a relatively poor nutrition is studied. The ability of activated sludge degradation of nitrobenzene is studied by degradation kinetics. The toxicology validation about the effect of activated sludge degradation of nitrobenzene is preliminarily explored. The results show that: The nitrobenzene could be...
The cumulative failure number of a repairable item increases with age and usage and represents the operational reliability of the item. In this paper, we use the cumulative failure number as a condition variable to represent the health level of an item, and use a general path model to represent the degradation process of items population. For a given time, the cumulative failure number is modeled...
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