نتایج جستجو برای: introduction conventional water treatment consist of unit processes include coagulation

تعداد نتایج: 21390409  

Journal: :آب و توسعه پایدار 0
بابک مهرآوران کاظم اسماعیلی

geosmin and mib are the common factors causing odor in the water. water treatment plants usually employ the conventional processes such as aeration, coagulation, flocculation, chlorination or ozonation and adsorption as preventive measures to reduce water odor. but each of these processes alone cannot completely remove the smell. the smell of fish, grass and mud greatly depends on the excessive...

ژورنال: طلوع بهداشت یزد 2016
برایی, ایران, برقعی, سیدمهدی, تکدستان, افشین, جاوید, امیرحسین, حسنی, امیرحسام,

Abstract Introduction: Nowadays, the greatest of process type used in treatment of beverage water is conventional treatment. That it cannot remove organic matter effectively. Filtration is one of the most important treatment processes used in water treatment plant.The one of approaches, modification of conventional rapid sand filters into dual or multimedia filters. Methods: This study wa...

Journal: :محیط شناسی 0
امیرحسام حسنی استادیار دانشکدة محیط زیست و انرژی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران علی ترابیان دانشیار مهندسی عمران محیط زیست دانشکدة محیط زیست دانشگاه تهران محمد عبدالله زاده کارشناسی ارشد مهندسی محیط زیست گرایش آب و فاضلاب، امور نگهداری و بهره برداری از تصفیه خانه های آب تهران

enhanced coagulation (ec) is defined as the addition of excess coagulation to improve the removal of disinfection by-product (dbps) precursors through the use of conventional water treatment processes. in this research, most of coagulants of ferric chloride (fecl3), poly aluminum chloride(pacl) in removal of most parameters of total organic carbon (toc), dissolved organic carbon (doc), organic ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ادبیات و زبانهای خارجی 1393

abstract listening is a key and main tool in second language skill and its development is of prime concern to teachers and learners. furthermore, the application of technology in language classrooms has become more commonplace in the last fifty years. computer and the internet have made foreign language materials easy to access and use. so, the present study is an attempt to examine the effec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1393

in this research the focus of the researcher is on the influence of american myths that have long been held and offered by the american culture and ideologies. sam shepard is conceived to be one of the greatest playwrights of the contemporary american theater. in his works he depicts broken characters who are struggling to keep up with the national expectations but are ceaselessly borne back to...

Journal: :Sustainability 2023

Considerable changes have been observed in surface waters’ quality recent years. They include an increase dissolved organic carbon (DOC) concentrations, as well a shift of natural matter (NOM) composition favor low molecular weight (LMW), and they are expected to occur on wider scale the future. Those predictions particularly worrying given importance water main potable source for numerous comm...

Journal: :Veterinary parasitology 2004
Walter Q Betancourt Joan B Rose

Major waterborne cryptosporidiosis and giardiasis outbreaks associated with contaminated drinking water have been linked to evidence of suboptimal treatment. Cryptosporidium parvum oocysts are particularly more resistant than Giardia lamblia cysts to removal and inactivation by conventional water treatment (coagulation, sedimentation, filtration and chlorine disinfection); therefore, extensive ...

Afshin Ebrahimi, Fazel Mohammadi-Moghaddam, Hmid Reza Tashauoei, Hossain Ataeifar, Mokhtar Mahdavi, Yaghob Hajizadeh,

Background & Aims of the Study: In some situation like rainfall seasons raw water become very turbid so it affected the water treatment plant processes and quality of produced water. Treatment of very high turbid water has some concerns like precursors for disinfection by-products and very loading rate of particle on filter's media and consequently increases in water consumptio...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید