نتایج جستجو برای: 254 and doc removal

تعداد نتایج: 16850949  

Journal: :Frontiers in Marine Science 2021

The Ross Sea, one of the most productive regions in Southern Ocean, plays a significant role deep water formation and carbon cycling. Dissolved organic (DOC) concentrations chromophoric dissolved matter (CDOM) absorption fluorescence (FDOM) properties were studied conjunction with biophysical during austral summer. Elevated values both DOC (mean 47.82 ± 5.70 ?M) CDOM (absorption coefficient at ...

Journal: :مجله تحقیقات سلامت 0
محمد تقی قانعیان mohammad taghi ghaneian محمد حسن احرامپوش mohammad hassan ehrampoush محبوبه دهواری mahboobeh dehvari منیره خیرخواه monireh kheirkhah فاطمه انوری fatemeh anvari بهزاد جمشیدی behzad jamshidi

introduction: natural organic matters (noms) existing in water resources led to various problems such as formation of disinfectant by-products (dbps). humic matters like humic acid (ha) are component of noms that should be removed from water. advanced oxidation process (aops) is one of the noms removal methods. the aim of this study was to survey the degradation of humic acid by electron beam i...

2015
J. Awad J. van Leeuwen C. Chow M. Drikas R. J. Smernik

Problems caused by dissolved organic matter (DOM) present in drinking water include its constituent compounds being precursors in the formation of disinfection by-products that pose risks to human health. The prediction of trihalomethanes (THM) formation is highly challenging due to a wide range of impacting factors, including the concentration and character of DOM, pH, temperature and the pres...

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...

Journal: :Chest 2018

2017
Josefine Filter Martin Jekel

Bank filtration (BF) and soil aquifer treatment (SAT) are efficient natural technologies in potable water reuse systems. The removal of many organic micro-pollutants (OMPs) depends on redox-conditions in the subsoil, especially on the availability of molecular oxygen. Due to microbial transformation of particulate and dissolved organic constituents, oxygen can be consumed within short flow dist...

Background and purpose: So far, different methods have been used to remove residual antibiotics from aquatic environments. This study investigated the efficiency of enzyme horseradish peroxidase (HRP) in presence of hydrogen peroxide in removal of Tetracycline and Ciprofloxacin in a batch system. Materials and methods: In an experimental study on laboratory scale, the effects of contact time, ...

Journal: :Publications of the Astronomical Society of the Pacific 1956

Journal: :Journal of environmental quality 2009
Lynette M Malecki-Brown John R White M Sees

Nutrient removal in treatment wetlands declines during winter months due to temperature. A 3-mo (wintertime) mesocosm study was conducted to determine the effectiveness of alum in immobilizing P as well as other nutrients during this period of reduced treatment efficiency. Eighteen mesocosms, triplicate alum, and three controls or no alum were established with either Typha spp., Schoenoplectus ...

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