نتایج جستجو برای: domestic sewage and industrial production increased

تعداد نتایج: 16985895  

Journal: :Environmental toxicology and chemistry 2001
K V Thomas M R Hurst P Matthiessen M J Waldock

This report describes the identification of important estrogenic compounds in surface and sediment pore-water samples collected from the Tyne and Tees estuaries (United Kingdom) through the application of toxicity identification evaluation (TIE) procedures. The Tyne and Tees estuaries represent estuaries that have been historically impacted by industrial activities and continue to receive treat...

Journal: :E3S web of conferences 2021

Water is the source of human life. However, a large amount domestic sewage, industrial wastewater and agricultural produced in production life pollute surface water, threatening normal people.In order to grasp water quality fully, temperature, PH. turbidity conductivity sensors are adopted collect various parameters, necessary software hardware design on-line quality' monitoring system complete...

Journal: :Water 2022

The aims of this study were to determine the pollution characteristics heavy metals and their potential harm human health in surface water agricultural irrigation areas, China, over a short term. In study, Cu, Zn, Pb, Hg, Ni, Cr, Cd, As Xiaohe River area detected analyzed. results showed that concentrations exceeded national environmental quality standard for varying degrees. October significan...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract this study was carried out to compare disinfecting effects of nanosilver with other feed disinfectants on layer hen performance, immune system, gastrointestinal microflora and intestinal morphology. total of 90 layers (lsl) were divided into five groups consisting: 1-control, 2- formalin (200 ppm), 3- formaycin (200 ppm), 4- nanosilver in drinking water (7.5 ppm) and 5-nanosilver in f...

Journal: :iranian journal of public health 0
n. razeghi k. imandel gh. salehi quzani

the problem of environmental pollution is of everybody's concern. pollution of zarjoub river in northern iran is most often cause by the uncontrolled disposal of sewage and other wastes resulting from domestic uses of water, industrial wastes containing a variety of pollutants, agricultural affluent from animal husbandry, drainage of irrigation water and urban run-off. a study was carried out t...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2015
Paula Peixoto Assemany Maria Lucia Calijuri Eduardo de Aguiar do Couto Aníbal Fonseca Santiago Alberto José Delgado Dos Reis

The production of different species of microalgae in consortium with other micro-organisms from wastewaters may represent an alternative process, to reduce the costs, for obtaining biofuels. The aim of this study was to evaluate the influence of pre-ultraviolet disinfection (UV) in the production of lipids from biomass produced in high rate ponds. Two high rate algal ponds were evaluated: a pon...

Journal: :iranian journal of public health 0
mahad s baawain 1. center for environmental studies and research (cesar), sultan qaboos university, muscat , sultanate of oman. mohsin al-jabri 2. sohar industrial port company, sohar , sultanate of oman. b s choudri 1. center for environmental studies and research (cesar), sultan qaboos university, muscat , sultanate of oman.

there are more than 350 wastewater treatment plants distributed across different parts of oman. some of them produce large quantities of domestic sewage sludge, particularly this study focused on characterizing domestic sludge of six treatment plants that may contain various pollutants, therefore the proper management of domestic sewage sludge is essential.samples of domestic sewage sludge were...

Journal: :Journal of environmental biology 2006
S Binu Kumari A Kavitha Kirubavathy Rajammal Thirumalnesan

Sanganur canal is the major open drainage system which has intricate linkage with storm water supply, domestic sewage and industrial effluent disposal. Water samples from various stations were collected and analysed for physicochemical parameters to assess the water quality of the Sanganur canal system. The study revealed that physicochemical parameters like pH, EC, TDS, DO, BOD, COD exceeded t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

The expanded granular sludge bed bioreactor appears today as a cheap, robust and more popular technology because it operates using a fluidized bed, which allows increasing in organic load and in cell retention times, generating higher treatment efficiencies (up to 95 %) and renewable energy (i.e., biogas, biomethane, and biohydrogen). Nevertheless, the efficiency of this bioreactor mainly depen...

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