نتایج جستجو برای: industrial water treatment
تعداد نتایج: 2022291 فیلتر نتایج به سال:
activated sludge or extended aeration treatment involves a continous system where aerobic biological growths are mixed with waste water and then separated in a gravity clarifier. therefore, waste treatment system such as the activated sludge system depend on the activities of communities of living organism. in this study, an attempt was made on the indentification of the bacterial population in...
most of the water treatment plants in iran discharge their sludge to the environment whithout consideration of possible side effects. since this kind of sludge is generally considered pollutant, the sludge treatment of water industry seems to be an essential task. obviously theweight and volume of solids produced during the coagulation process are much more than other wastes of water treatment ...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...
Non-native aquatic species can be introduced in new areas through emptying of the ballast tanks, with a high impact on health, economy and environment. This is considered by the International Maritime Organization (IMO): (i) in 2004, the IMO adopted the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BMW Convention) in orde...
Toshimasa Akamatsu Noboru Oda OVERVIEW: Many countries and regions around the world are facing threats of severe water shortages or degradation of the water environment resulting from factors such as explosive population growth, rising living standards brought about by economic progress, and increasing use of industrial water. Using the advanced technologies of water treatment systems, informat...
Background: Water resource management is a strategic issue in Qom city. Water scarcity is one of the most critical concerns of industrial estates. This study aimed to evaluate wastewater management in the Shokuhieh industrial park of Qom province in 2013. Methods: This is a descriptive cross-sectional study done by visiting the industrial units in person, completing questionnaires and analyzin...
پساب حاصل از عملیات استخراج روغن از میوه زیتون به دلیل حضور ترکیبات مقاوم و تخریب ناپذیر زیستی با روشهای معمول بیولوژیک قابل تصفیه نمی باشد. از سوی دیگر با شناخت و به کار گیری فرایندهای اکسیداسیون پیشرفته که بر مبنای تشکیل رادیکالهای هیدروکسیل قرار دارند، نظیر فرایند فنتون، تخریب این نوع آلاینده ها امکان پذیر شده است. در پروژه حاضر ادغامی از تیمارهای مختلف فیزیکوشیمیایی با تاکید بر فرایند فنتون...
background: water resource management is a strategic issue in qom city. water scarcity is one of the most critical concerns of industrial estates. this study aimed to evaluate wastewater management in the shokuhieh industrial park of qom province in 2013. methods: this is a descriptive cross-sectional study done by visiting the industrial units in person, completing questionnaires and analyzing...
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