نتایج جستجو برای: water treatment facility

تعداد نتایج: 1941712  

Journal: :مجله انسان، محیط زیست و ارتقاء سلامت 0
tooran yarahmadi department of environmental health engineering, zanjan university of medical sciences, zanjan, iran mazyar peyda department of environmental health engineering, zanjan university of medical sciences, zanjan, iran mehran fazli mohammadian department of environmental health engineering, zanjan university of medical sciences, zanjan, iran rizan rezaeian department of environmental health engineering, zanjan university of medical sciences, zanjan, iran negin soleimani department of environmental health engineering, zanjan university of medical sciences, zanjan, iran

background; turbidity removal using inorganic coagulants such as iron and aluminum salts in water treatment processes causes environmental and human health concern. historically, the use of natural coagulant to purify turbid water has been practiced for a long time. recent research indicates that descurainia sophia seed can be effectively used as a natural coagulant to remove water turbidity. m...

Journal: :Journal of environmental quality 2012
C F Williams J E T McLain

The reuse of treated wastewater for groundwater recharge is an effective way to provide advanced treatment and water storage. Contaminants such as human drugs have been identified as a potential problem for use of this water. Gilbert, Arizona maintains a 28.3-ha facility designed to recharge 15,150 m d through recharge basins constructed on native soil. The facility averages an infiltration rat...

Journal: :BMC Public Health 2009
Mengiste M Mesfin James N Newell John D Walley Amanuel Gessessew Richard J Madeley

BACKGROUND Delays seeking care increase transmission of pulmonary tuberculosis and hence the burden of tuberculosis, which remains high in developing countries. This study investigates patterns of health seeking behavior and determines risk factors for delayed patient consultation at public health facilities in 10 districts of Ethiopia. METHODS New pulmonary TB patients >or= 15 years old were...

Journal: :Japan journal of water pollution research 1991

2004
J. K. Northcutt D. R. Jones

A survey of commercial broiler processing facilities across the US was conducted to determine overall water use. Seventy-two percent of the respondents reported using city water to process broilers, and 66% reported discharging to city sewers. Over 41% of the responses were from facilities located in the Southeast; however, there was no relationship between location (region of US) of facility a...

Journal: :iranian journal of aquatic animal health 0
h ahari m alinejad dizaj s paidari a a anvar

several common approaches are used for disinfection of water in this section, but using the approaches (e.g. chlorination) are accompanied with hazardous by-products and also lead to notable changes in odor and flavor of water. gamma irradiation as an emerging method has been encouraged currently by fao/who for water, wastewater and food treatment. coliform bacteria belong to common contaminant...

Journal: :journal of medicinal plants and by-products 0

0

Journal: :journal of research in health sciences 0
a rahmani mr samarghandi mt samadi f nazemi

background: there are great interests in photocatalytic oxidation of contaminants using titanium dioxide in recent years. the main objective of this research was to study photocatalytic disinfection of coliform bacteria as water microbial pollution index using tio2 and a low pressure uv lamp in a batch reactor. methods: the polluted water was prepared by adding a colony of coliform in raw water...

Journal: :journal of nanostructures 2016
m. ebadi h. shagholani h. jahangiri

in current work, cds/black carbon nanocomposites were successfully synthesized with the aid of chestnut and cadmium nitrate as the starting reagents. besides, the effects of preparation parameters such as reaction time, and precursor concentration on the morphology of products and removal of heavy metals (hg+2, pb+2) were studied by scanning electron microscopy images and batch adsorption mode....

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