نتایج جستجو برای: chemical treatment

تعداد نتایج: 1726903  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده ادبیات، زبانهای خارجی و تاریخ 1389

abstract the main purpose of this study was to investigate whether there was any significant difference between the speaking achievement of learners who were trained by means of consciousness raising of sociolinguistic skills and that of learners who were trained without the above mentioned task. the participants of this study consist of 60 intermediate level students participating languag...

Journal: :International Journal of Bioscience, Biochemistry and Bioinformatics 2012

Journal: :Frontiers in environmental chemistry 2021

SPECIALTY GRAND CHALLENGE article Front. Environ. Chem., 22 November 2021Sec. Chemical Treatments https://doi.org/10.3389/fenvc.2021.792814

Journal: : 2023

Abstract This paper reports the effectiveness of chemical coagulation and biological techniques for treatment wastewater from industrial agricultural operations. Agricultural husbandry has been reported to produce that high content oxygen demand (COD), (BOD), turbidity as well organic inorganic pollutants. A comparison on use based coagulants optimum conditions required percentage removal effic...

Journal: :The Open Chemical Engineering Journal 2015

Journal: :Journal of Environmental Conservation Engineering 1987

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