نتایج جستجو برای: water pollutants chemical

تعداد نتایج: 907257  

Journal: :Croatian medical journal 2002
Ksenija Vitale Marija Marijanović Rajcić Ankica Senta

AIM To describe waters monitoring in Croatia and legislation status for their evaluation, and to present health-relevant data and long-term analysis of the Drava river water, which is used in drinking water production. METHODS Survey of databanks of various Croatian institutions related to waters, and physical and chemical analysis of 13 surface water pollutants, applying HRN ISO laboratory m...

Rivers can be contaminated with different pollutants such as trout farms. Evaluation of the effect of trout farm on water quality is important to give new permission for trout farm construction. In current work, the effect of constructed trout farms near the Deinachal River on some physicochemical properties namely chemical oxygen demand (COD), biological oxygen demand (BOD5), dissolved oxygen ...

Journal: :دامپزشکی 0
معصومه آریایی گروه محیط زیست، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران امیرحسین حمیدیان گروه محیط زیست، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران سهیل ایگدری گروه شیلات، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران سهراب اشرفی گروه محیط زیست، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران

in aquatic ecosystems, pollutants including heavy metals cause pathological alternations in fishes. as, the impacts of pollutants are affected by chemical properties of water, this study was conducted to compare the histopathological effects of two heavy metals as and cd on gill structure of aphanius sophiae. a total of 350 specimens were collected from the shoor river of eshtehard during the s...

Journal: :تحقیقات نظام سلامت 0
مرضیه وحید دستجردی کارشناس ارشد، مرکز تحقیقات محیط زیست? دانشگاه علوم پزشکی اصفهان? اصفهان، ایران. سعید شنبه زاده کارشناس ارشد مهندسی محیط زیست? شبکه بهداشت و درمان مسجد سلیمان، اهواز، ایران. اسداله ذهب صنیعی کارشناس ارشد مهندسی بهداشت محیط? سازمان آب منطقه ای اصفهان، اصفهان، ایران. رضا روزگار کارشناس بهداشت محیط، سازمان آب منطقه ای اصفهان، اصفهان، ایران.

background: gavkhooni marsh is one of the most important marshes in iran. in the recent years, natural conditions of this marsh have been affected by agricultural and industrial activities in zayandehrood river catchment areas. this research was carried out in 2006 to assess some chemical parameters and the heavy metals concentration in water, soil, and plants in the area and to compare the res...

Rivers can be contaminated with different pollutants such as trout farms. Evaluation of the effect of trout farm on water quality is important to give new permission for trout farm construction. In current work, the effect of constructed trout farms near the Deinachal River on some physicochemical properties namely chemical oxygen demand (COD), biological oxygen demand (BOD5), dissolved oxygen ...

Rivers can be contaminated with different pollutants such as trout farms. Evaluation of the effect of trout farm on water quality is important to give new permission for trout farm construction. In current work, the effect of constructed trout farms near the Deinachal River on some physicochemical properties namely chemical oxygen demand (COD), biological oxygen demand (BOD5), dissolved oxygen ...

2013
S. Dipu

One of the burning problems of our industrial society is the high consumption of water and the high demand for clean drinking water. Numerous approaches have been taken to reduce water consumption, but in the long run it seems only possible to recycle wastewater into high quality water. In this study, an attempt was made to compare the efficiency of aquatic macrophytes like Typha sp., Eichhorni...

2017
Marcel Langner Thomas Draheim Wilfried Endlicher

Urban agglomerations are places of increased emissions of anthropogenic pollutants into the atmosphere. Since most of these pollutants are harmful to humans, reduction of their ambient concentrations is a major issue of environmental policy on international, national, and local levels. According to Wiederkehr and Yoon (1998), air pollutants can be grouped into major and trace or hazardous air p...

2016
Umesh Kumar Garg Chetna Sharma Umesh K Garg

Electrocoagulation has a long history as a water treatment technology having been employed to remove a wide range of pollutants. Inspite of its manifold applications the technique has never been accepted as a mainstream water treatment technology due to lack of a systematic approach to electrocoagulation reactor design, operation and the issue related to electrode dissolution over period of tim...

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