چکیده مقاله
Nitrate is one of the pollutants in wastewater that its removal and reduction from wastewater is essential to reduce pollution and prevent damage to the life of living organisms One way to remove nitrate is by biological removal by bacteria Depending on their enzymatic power, these bacteria convert nitrate to nitrite and eventually to molecular nitrogen The aim of this study was to investigate the effects of bacterial uptake to remove nitrate, by creating anaerobic respiration conditions of aeration unit with high SRT, during hydraulic maintenance from 12 to 72 hours, in lahijan wastewater treatment plant of Pseudomonas bacteria was and analyzed The findings show a decrease in COD and BOD by more than 97%, respectively, and nitrogen and phosphorus removal efficiency up 96% and 92% Among all the bacteria separated in the current study, the Pseudomonas with a rate of 44 2% and Alacaligenes with a rate of 33 5% and Enterobacter with a rate of 30 8% and Shigella 31 7% were identified as the dominant species The results of the current study showed that the advantages of the use of mentioned method would lead to the removal of the organic matters and nutrients, and activity of denitrifying bacteria, besides a significant reduction in algae growth According to the results of the analysis by the T Test, with two independent groups and in the significance level of 5% there is a significant different between the aerobic and anoxic groups in terms of NH4 N and NO2 N and NO3 N
کلیدواژهها
نویسندگان
Meghdad Ebrahimi Sabet
Master of Mechanical Engineering, Director of Water and Wastewater Guilan, Siahkal City,
Kambiz Esmaeeli
Master of Environmental Engineerin, Director of Water and Wastewater Guilan, Lahijan City,
Kheizaran Ebrahimi Sabet
Expert in Charge of Gilan, Markazi Province, Laboratory,
شیوه ارجاع
Ebrahimi Sabet, Meghdad and Esmaeeli, Kambiz and Ebrahimi Sabet, Kheizaran,1400,Removal of Nitrate by Bacteria by Absorption Well Method in Wastewater Treatment Plants,The first national conference on water quality management and the third national conference on water consumption management,Tehran
ارائهشده در
مجموعه مقالات اولین همایش ملی مدیریت کیفیت آب و سومین همایش ملی مدیریت مصرف آب9 آذر 1400 · تهران