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首页> 外文期刊>International Journal of Basic and Applied Sciences >Efficiency of pseudomonas aeruginosa and Escherichia coli to treatment of effluent petroleum wastewater from AI-Nasiriya refinery – Iraq
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Efficiency of pseudomonas aeruginosa and Escherichia coli to treatment of effluent petroleum wastewater from AI-Nasiriya refinery – Iraq

机译：铜绿假单胞菌和大肠杆菌处理AI-Nasiriya炼油厂产生的石油废水的效率–伊拉克

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摘要

Four bacteria isolated from the soil contaminated with petroleum hydrocarbon and wastewaters from the refinery located in the south part of AI-Nasiriya city in Iraq,by using dilution method.The results showed that Pseudomonas aeruginosa was more dominant with 100% in soil and wastewaters in inside of refinery,and 93%,95% in soil and wastewaters in outside the refinery respectively.The results showed that the second dominant of bacteria was Esherchia coil with 92%,98% in soil and wastewaters in inside the refinery,and 83%,88% in soil and wastewaters in outside of refinery.The remaining two species of bacteria isolated with a very low frequency,these bacteria were Bacillus subtilis and Klebsiella sp ., B.subtilis was obtained with 10%,8% in soil and wastewaters in inside the refinery,and 10%,3% in soil and wastewaters in outside of refinery .In the same time that Klebsiella sp . Was obtained with 10% in soil and wastewaters in inside the refinery,and 8%,3% in soil and wastewaters in outside the refinery.The results showed that mixed two bacteria (high frequency)were more efficient to decrease Biological Oxygen Demande(BOD)with 59% in pH 4,0.5gm / I salt (NaCI) concentration.Chemical Oxygen Demande (COD) was decreased to 75%.The results showed that the Total Acidity(TA) in wastewater were increased to 82% mg / I in 40c o ,pH 8 and 2.0 gm/ I NaCI , and Total Suspended Solid (TSS) was decreased to 50 mg / I in 40c o , pH,2.0 gm / I NaCI . The results showed that the Total Petroleum Hydrocarbon (TPH) was removal with 99.99%, and in the same time the numbers of mixed bacteria were increased to 5x10 8 after incubation 48h in 40c o .
机译：通过稀释法从位于伊拉克AI-Nasiriya市南部的炼油厂的土壤中分离出了四种受石油烃污染的细菌，结果表明，铜绿假单胞菌在100％的土壤和废水中占主导地位。结果表明，第二个优势菌是埃希氏菌属，其中精炼厂内部的土壤和废水中的比例分别为92％，98％和83％。 ，在炼油厂外部的土壤和废水中占88％。其余两种细菌分离的频率非常低，这些细菌是枯草芽孢杆菌和克雷伯菌，其中枯草芽孢杆菌在土壤和废水中占10％，8％。在Klebsiella sp。的同时，在炼油厂内部，以及在炼油厂外部的土壤和废水中的10％，3％。在精炼厂内土壤和废水中的含量为10％，在精炼厂外土壤和废水中的含量为8％，3％。结果表明，将两种细菌（高频）混合能更有效地降低生物需氧量（BOD） pH为4,0.5gm / I盐（NaCl）浓度为59％的情况下，化学需氧量（COD）降低至75％，结果表明废水中的总酸度（TA）增加至82％mg / I在40c o，pH 8和2.0 gm / I NaCl中，总悬浮固体（TSS）降低至50 mg / I。结果表明，总石油烃（TPH）去除率为99.99％，同时在40℃孵育48小时后，混合细菌的数量增加到5x10 8。

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