نتایج جستجو برای: scale industrial wastewater treatment plant

تعداد نتایج: 2387216  

ژورنال: سلامت و محیط زیست 2009
آیتی, بیتا, احمدی, مریم, گنجی­دوست, حسین,

Background and Objectives: Upflow Sludge Blanket Filtration (USBF) system is a modification  of the conventional activated sludge process that incorporates an anoxic zone with an upflow sludge blanket filtration clarifier in one bioreactor. It has no inherent capacity limits and is used in a wide range of applications in municipal, industrial and agricultural wastewater treatment. The main obje...

2011
Zijun Zhang Andrew Kusiak

In this paper, a data-mining approach for modeling pumps in the wastewater preliminary treatment process is discussed. Datamining algorithms are utilized to develop pump performance models based on industrial data collected at a municipal wastewater processing plant. The performance of wastewater pumps is described by two parameters, pump energy consumption and water flow rate after the pumps. ...

2015
Ronald W. Martin James R. Mihelcic John C. Crittenden Ronald W. Martin

Biochemical processes by chemoautotrophs such as nitrifiers and sulfide and iron oxidizers are used extensively in wastewater treatment. The research described in this dissertation involved the study of two selected biological processes utilized in wastewater treatment mediated by chemoautotrophic bacteria: nitrification (biological removal of ammonia and nitrogen) and hydrogen sulfide (H2S) re...

Journal: :تحقیقات نظام سلامت 0
بابک کاکاوندی دانشجوی کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران احمد جنیدی جعفری دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تربیت مدرس، تهران، ایران اصغر قاسمی کارشناس، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران عبدالمجید قلیزاده دانشجوی کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران

normal 0 false false false en-us x-none fa background: nowadays wastewater is one of the important sources of environmental pollutions and   one of the aims of wastewater treatment is to maintain a healthy environment. nonstandard wastewater discharges and their use in agriculture or discharge to surface water will follow environmental and health hazards. the aim of this study was to compare th...

2005
Y. Kim B. Han J. Kim

Electron beam has introduced to investigate the effect of radiation on the disinfection of coli-forms in the effluent from the municipal wastewater treatment plant. Unchlorinated secondary effluent was irradiated at different dose of 0.2 – 1.0 kGy with 1 MeV, 40kW electron accelerator. It is observed that nearly 100% reduction in E-Coli. and total coli-forms were achieved with a dose of 0.8kGy....

2015
Ata Allah Nadiri Asgar Asgari Moghaddam

Introduction Because of shortage of water resources in the world, it seems necessary to refine wastewater, particularly in arid and semi-arid areas such as Iran. Correct treatment, management and the control of refining process needs to investigate about effective parameters in this process. Therefore, because of the uncertainty and complexity in finding qualitative parameters and their relatio...

2013
Li Si Dasong Zhang

Li Si, Kong Ruixue, Sun Lin, Li Sifan, Yang Shuangchun* (Liaoning Shihua University. Fushun, Liaoning, China. 113001) Abstract—Industrial wastewater is a kind of wastewater that generate in the industrial production process. The wastewater from refining and coal carbonization contains high concentration of phenols pollutants. In this paper, study on phenol treatment methods in industrial wastew...

2012
Arshad Ali Muhammad Jawed Iqbal

The decline in the availability and alarming pollution of the existing water resources is the major environmental problem of third-world countries. The main reason of water pollution is the disposal of untreated industrial effl uents. This study was designed to evaluate the pollution load caused by a paper mill, and to propose a wastewater treatment plant design, based on the analyses of wastew...

2001
W. C. Chen Ni-Bin Chang Wen K. Shieh

Many uncertain factors affect the operation of wastewater treatment plants. These include the physical and chemical properties of wastewater streams as well as the degradation mechanisms exhibited by biological processes. Because of the rising concerns about environmental and economic impacts, improved process control algorithms, using artificial intelligence technologies, have received wide at...

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