نتایج جستجو برای: biochemical oxygen demand

تعداد نتایج: 477091  

Journal: :international journal of environmental research 2011
m. selvamurugan p. doraisamy m. maheswari n.b. nandakumar

in this paper, startup performance of upflow anaerobic hybrid reactor and upflow anaerobic sludge blanket reactors in anaerobic treatment of distillery spentwash has been studied under identical conditions of operation. various effluent characteristics like ph, electrical conductivity, chemical oxygen demand, biochemical oxygen demand and total solids and other process parameters like biogas p...

Journal: :environmental health engineering and management 0
mohammad shakerkhatibi* environmental engineering, department of environmental health engineering, tabriz university of medical sciences, tabriz, iran mohammad mosaferi environmental health engineering, department of environmental health engineering, tabriz university of medical sciences, tabriz, iran khaled zorufchi benis faculty of chemical engineering, sahand university of technology, tabriz, iran zahra akbari student research committee, tabriz university of medical sciences, tabriz, iran

background: the measurement data regarding the influent and effluent of wastewater treatment plant (wwtp) provides a general overview, demonstrating an overall performance of wwtp. nevertheless, these data do not provide the suitable operational information for the optimization of individual units involved in a wwtp. a full-scale evolution of wwtp was carried out in this study via a reconciled ...

ژورنال: :دانش و تندرستی 0
mohammad abdollahzadeh1 1- vice-chancellery of food and drug, sabzevar university of medical sciences, sabzevar, iran. roshanak rafiei nazari2 2- dept. of physics, islamic azad university, south tehran branch, tehran, iran. negar abasi bastami3 3- school of medicine, shahroud university of medical sciences, shahroud, iran. ebrahim esmaeili4 4- vice-chancellery of food and drug, babol university of medical sciences, babol, iran. mojtaba raeisi5 5- cereal health research center, golestan university of medical sciences, gorgan, iran. majid arabameri6 6- vice-chancellery of food and drug, shahroud university of medical sciences, shahroud, iran.

مقدمه: پیش بینی شاخص های کیفی تصفیه فاضلاب دارای اهمیت زیادی در روش های تصفیه فاضلاب مدرن است. یکی از مهمترین مشکلات در هنگام پیش بینی کارآیی فاضلاب تصفیه شده، پیچیدگی ویژگی های فیزیک و شیمیایی فاضلاب اولیه و اختلاف داده ها به علل مختلف است. مدل سازی تصفیه فاضلاب با استفاده از سامانه استنتاج فازی- عصبی تطبیقی می تواند به بهبود فرآیند کنترل کیفیت فاضلاب کمک کند. هدف از این مطالعه، مدل سازی تصفیه...

Journal: :iranian journal of health sciences 0
mehdi ahmadi environmental technology research center and department of environmental health engineering, ahvaz jundishapur university of medical sciences, ahvaz, iran aliakbar mehr alian department of environmental engineering, bandar abbas science and research branch, islamic azad university, bandar abbas. iran hoda amiri department of environmental health engineering, tehran university of medical sciences, tehran, iran bahman ramavandi department of environmental health engineering, faculty of health, bushehr university of medical sciences, bushehr, iran hassan izanloo department of environmental health engineering, research center for environment pollutants, qom university of medical sciences, qom, iran

background and purpose: the performance of full-scale moving bed biofilm reactor (mbbr) was evaluated as an alternative for upgrading of kish island mirmohana wastewater treatment plant. in this study activated sludge process upgrade to mbbr process and different operating parameters were compared. materials and methods: effect of upgrading on different parameters such as organic loading rate (...

Journal: :international journal of environmental research 0
m. selvamurugan department of environmental sciences, tamil nadu agricultural university, coimbatore - 641 003, tamil nadu, india p. doraisamy department of environmental sciences, tamil nadu agricultural university, coimbatore - 641 003, tamil nadu, india m. maheswari department of environmental sciences, tamil nadu agricultural university, coimbatore - 641 003, tamil nadu, india n.b. nandakumar department of environmental sciences, tamil nadu agricultural university, coimbatore - 641 003, tamil nadu, india

in this paper, startup performance of upflow anaerobic hybrid reactor and upflow anaerobic sludge blanket reactors in anaerobic treatment of distillery spentwash has been studied under identical conditions of operation. various effluent characteristics like ph, electrical conductivity, chemical oxygen demand, biochemical oxygen demand and total solids and other process parameters like biogas pr...

Journal: :Bioresource technology 2004
N S Bolan L Wong D C Adriano

The objectives of the study were: (i) to examine the efficiency of nutrient removal during the treatment of dairy farm effluent in a two-pond system, and (ii) to produce an inexpensive but effective nutrient trap which could be recycled as a nutrient source or soil mulch. The concentration of chemical oxygen demand (COD), biological oxygen demand (BOD), nitrogen (N), phosphorus (P) and potassiu...

2014
Ng Kar Kin Hamidi Abdul Aziz Amin Mojiri

The characterization of landfill leachate has been well established. However, its biodegradation properties have not been well reported. Therefore, this research was undertaken to investigate the biodegradability of semi-aerobic sanitary landfill and the ratio of the biological oxygen demand (BOD) to chemical oxygen demand (COD) BOD5/COD, COD fraction on leachate from Pulau Burung landfill Site...

Journal: :Chemical Engineering Research & Design 2022

This paper proposes an integrated framework of remote sensing and machine-learning techniques to predict municipal wastewater influent biochemical oxygen demand (BOD5) in treatment plants (WWTPs). The study compares the performance several supervised algorithms, specifically decision tree, random forest, adaptive boosting, gradient boost, extreme boosting against received by two WWTPs South Kin...

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