پديد آورنده :
انصاري، شهاب
عنوان :
بررسي اثر كاه جو به عنوان فيلتر آلي در كاهش نيترات آب زهكشي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
آبياري و زهكشي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
چهارده، 94ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
منوچهر حيدرپور، فرهاد موسوي
استاد مشاور :
اسماعيل لندي
توصيفگر ها :
بيورآكتور , دنيتريفيكاسيون , كودهاي نيتروژنه
تاريخ نمايه سازي :
17/11/90
استاد داور :
جهانگير عابدي كوپايي، مهران شيرواني
تاريخ ورود اطلاعات :
1396/10/12
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
A Study of Effect of Barley Straw as Organic Filter on Reduction of Drainage Water Nitrate Shahab Ansari E mail Shnp1020@yahoo com Sept 17 2011 Water Engineering Department Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language Farsi Manouchehr Heidarpour E mail heidar@cc iut ac ir Sayed Farhad Mousavi E mail mousavi sf@yahoo com Abstract Nitrogen fertilizers nowadays are widely used to increase crop yield But unfortunately they are oftenlost quickly by leaching because of solvability unlimited application and irregular irrigation so thiscauses contamination of soil and water resources On this recpect the most important worry was aboutnitrate and many of research showed wide soil and water resources contamination of that all over theworldin recent decade On the other hand treating and reusing drainage water municipal sewage andwastewater is necessary because of shortage of water resources especially in arid and semi arid regionslike Iran By viewpoint of organic material as drainage envelop and this fact that they require an externalcarbon source to sustain denitrification and nitrate removal this study describes laboratory experimentsthat investigated monitoring of nitrate and ammonium removal from drainage water in a sandy clay soilthat was combined with different percentages of barley straw 10 20 and 30 volume basis The barleystraw was either mixed with soil or was applied as separate layers All treatments were performed withthree replications Influent of nitrate for all treatments was fix and about 80mg L during the priod of theexpriments Effluent of nitrate and ammonium concentrations of all barley straw treatments decreasedwith elapsed time and effect of perentage and composition method of barley straw and soil wassignificant p 0 01 Optimum volume percentage of barley straw was 20 and 30 for layered and mixedtreatments and nitrate removal percent was 81 71 respectively Optimum treatment in experiment was20 percent of barley straw that combined in layering method with soil Statistical comparison betweenmean of ammonium concentrations in the effluent of different treatments showed that howeverammonium concentrations in drainage water of treatments decreased with elapsed time and this value ofconcentration less than 2 5 mg L and variation of it was very low but there was significant difference p 0 01 between the treatments in this recpect The pH with a range of 7 18 7 95 and electricalconductivity EC with a range of 0 532 0 581 dS m didn t have special trend during the experiment andthere was significant difference p 0 01 between the effluent pH treatments and no significant difference p 0 05 between the effluent electrical conductivity of treatments The effluent pH of drainage water forall treatments was almost lower than influent value of it but the effluent electrical conductivity oftreatments was almost equal to influent value of ti According to this result of experiment application ofbarley as bioreactor to nitrate removal from drainage water especially in layering method in sandy calysoil was recommended because of this organic material had sufficient carbon to sustain denitrification ease avalibility and low cost application of that Keywords Barley straw Bioreactor Contamination Denitrification Fertilizers Nitrate
استاد راهنما :
منوچهر حيدرپور، فرهاد موسوي
استاد مشاور :
اسماعيل لندي
استاد داور :
جهانگير عابدي كوپايي، مهران شيرواني
