توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Ammonia Removal Efficiency of Peat against Biochar in Biofiltration of Domestic Wastewater
نویسنده(ها): ،
اطلاعات انتشار: نخستین همایش بین المللی جامع محیط زیست، سال
تعداد صفحات: ۱۴
Biofiltration has gained popularity as a cheap green technology in processing wastewater over recent years. The inexpensive installment, lower energy consumption and less maintenance requirements make implementing it applicable for people in rural areas as well. The current study tried to compare treatment efficiency of two natural filter–media known to be good nutrient absorber. The objective was to investigate either peat or biochar can enhance the ability of a laboratory scale biofilter to consistently and cost–effectively reduce concentration of ammonia which is toxic to human health and aquatic life. BOD5, COD, TSS, and concentration of different composition of nitrogen were measured on a frequent basis.Peat showed better reduction ratio of 87% and 65% in BOD5 and COD respectively comparing to biochar with +6% increase in BOD5 and 7% decrease in COD by the end of the experiment. Although biochar showed characteristic of a time–limited median and there were 25% decreases of BOD5 and 40% decrease in COD values until a certain time. Both median were efficient in TSS removal with 79% and 45% reduction ratio.Peat outperformed biochar from the first day of the experiment with 94.4% ammonia removal ratio comparing to 27.8% increase of ammonia concentration in the effluent treated with biochar.Although treated wastewater with biochar had less odor–nuisance than peat, a low retention time might have resulted in a partial nitrification in biochar biofilter. Thus it is recommended to increase retention time and decrease the volume of biochar to have more void and thus more effective presence of oxygen<\div>

۲Employing High Resolution Imagery to Effectively Monitor Caspian Hyrcanian Forest; an Umbrella Review
نویسنده(ها):
اطلاعات انتشار: نخستین همایش بین المللی جامع محیط زیست، سال
تعداد صفحات: ۹
The Hyrcanian Caspian forest in northern Iran which used to be rich in flora and fauna is now facing deforestation at a tremendously rapid pace. Current forest management plans fail in monitoring forest status and detect illegal forest activities in time. During recent years, natural resource managers have shown interest in forestry application of remote sensing techniques as a cost effective way to monitor and manage biodiversity and land cover\use changes but the full potential of remote sensing has not been explored so far.The present study will have an umbrella review over current status of RS and GIS tool applications in monitoring northern forest of Iran. Specific projects are reviewed briefly and advantages of having access to high resolution imagery in conducting forest inventories is discussed. The study also argues briefly how image interpretation can help in extracting stand structure information or detecting clear–cuts in forested area accurately. Finally alternatives to expensive high resolution satellite imagery are suggested for researchers with good GIS skill level but limited financial support to carry out their research.<\div>
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