菌株Paracoccus binzhouensiswg1脱氮性能试验研究

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中图分类号：X522；X523 文献标志码：A

Abstract：To evaluatethe nitrogen removal capacityandapplication potential of strain Paracoccusbinzhouensis wg1 （strainwgl），the toleranceofstrainwgltoinorganicnitrogen inwastewaters with diffrentconcentrationsofammonia nitrogenandnitratenitrogen was tested，itsnitrogenremoval eficiencyatdifferentculturetemperatureswasevaluated， and the protein contentof the bacterialcelsduring the nitrogen removal process was determined.The resultsshow that strain wgl has extremelyhigh tolerance to inorganic nitrogen，witha maximum tolerable mass concentrationof6OO0 mg/L. Under conditions where the temperature is as low as 15‰ ，the removal rates of ammonia nitrogen and nitrate nitrogen are 63.93% and 29.70% respectively，exhibiting excellent environmental adaptability and low-temperature nitrogen removal capacity. The mass of bacterial protein accounts for more than 50% of the total dry weight，indicating its potential to be converted intomicrobialfeed.Insimulated wastewater，strainwglcansimultaneouslyremoveammonianitrogen，nitrate nitrogen，and nitrite nitrogen within 24h ，with a total nitrogen removal rate of up to 90.39%

Keywords：biological nitrogen removal； strain；aerobic denitrification；heterotrophic nitrification

随着工业化和城市化的快速发展，水体污染问题日益严重，氮素污染已成为水环境管理的一个重大挑战[1-3]。（剩余9889字）