نتایج جستجو برای: organic load

تعداد نتایج: 348210  

Journal: :Ambiente e Agua - An Interdisciplinary Journal of Applied Science 2020

ژورنال: بهداشت و توسعه 2019
Fallah, Maryam , Hedayati, Seyed Aliakbar, Pirali Zefrehei, Ahmadreza ,

Background: Todays, water resources are affected by various factors such as organic materials, pathogens (bacterial and microbial agents), and minerals (including heavy metals). For this reason, continuously examining the spatiotemporal changes in environmental pollutants is one of the most critical components of water quality studies.      Methods: The sampling of some heavy metals (Ni, Cd, Z...

F Hashemi, M Ahmadi, N Alavi, N Jaafarzadeh, Z Ghaedrahmat,

Background and purpose:Moving Bed Biofilm Reactor is an aerobic attached growth with better biofilm thickness control, lack of plugging and lower head loss. Consequently, this system is greatly used by different wastewater treatment plants. High TDS wastewater produced petrochemical, leather tanning, sea food processing, cannery, pickling and dairy industries. The aim of this study was to evalu...

Journal: :international journal of environmental research 0

present communication deals with the study of four village fish culture ponds (two wild and two managed ponds) from district hisar of haryana, india was undertaken, to correlate the water quality and biological cycles in ponds with fish production. studies have revealed that the ponds are in good trophic status. chlorides, total hardness, calcium, magnesium, biochemical oxygen demand (bod), pho...

Journal: :international journal of environmental research 0
j. l. salgueiro chemical engineering department, eei, university of vigo, 36310 vigo, spain l. perez chemical engineering department, eei, university of vigo, 36310 vigo, spain r. maceiras defense university center, escuela naval militar, plaza de españa 2, 36920 marín, spain a. sanchez chemical engineering department, eei, university of vigo, 36310 vigo, spain a. cancela chemical engineering department, eei, university of vigo, 36310 vigo, spain

wastewater contains many organic and inorganic contaminants that can cause serious damage to the environment and health of people, therefore, they have to be eliminated before being downloaded into sensitive areas. different methods of wastewater purification have been used for contaminants removal. however, they present some technical and economic limitations. thus, new methods of nutrients re...

In the present study, multiscale nanosilica/E-glass/epoxy anisogrid composite panels were investigated for flexural properties as a function of nanosilica loading in the matrix (0, 1, 3 and 5 wt.%). The surface of the silica nanoparticles was firstly modified with 3-glycidoxypropyltrimethoxysilane (3-GPTS). The fourier transform infrared (FTIR) spectroscopy revealed that the organic functional ...

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