نتایج جستجو برای: bod5

تعداد نتایج: 901  

Journal: :E3S web of conferences 2021

The climatic changes that the middle Moulouya region of Morocco has undergone in recent years, demographic growth and development urbanization have led to a significant decrease reserves water can be mobilized for domestic agricultural uses. This deficit, between availability need water, will only increase with increasing needs consuming sectors. main objective is follow physical-chemical evolu...

2012
Mohammad Ali Zazouli Zabihollah Yousefi Akbar Eslami Maryam Bagheri Ardebilian

Advanced oxidation processes like Fenton and photo-Fenton have been effectively applied to oxidize the persistent organic compounds in solid waste leachate and convert them to unharmful materials and products. However, there are limited data about application of Fenton-like process in leachate treatment. Therefore, this study was designed with the objective of treating municipal landfill leacha...

Journal: :Environmental technology 2014
Almoayied Assayed Jonathan Chenoweth Steven Pedley

In this paper, results ofa new sand filter design were presented. The drawer compacted sand filter (DCSF) is a modified design for a sand filter in which the sand layer is broken down into several layers, each of which is 10 cm high and placed in a movable drawer separated by a 10 cm space. A lab-scale DCSF was designed and operated for 330 days fed by synthetic grey water. The response of draw...

2016
Ligy Philip

Water is one of the world’s most valuable resources. However it is under constant threat due to urbanization, explosive population growth and pollution. The most promising efforts to stem water crisis are to treat the wastewater in a sustainable way and reuse for non-potable applications. Grey water (GW) being highly voluminous and relatively less polluted, recycling for non-potable uses like u...

ژورنال: :سلامت و محیط زیست 0
بهروز کریمی b karimi department of faculty of environmental health engineering, school of public health, shahid sadoughiکارشناسی ارشد بهداشت محیط، دانشکده بهداشت دانشگاه علوم پزشکی اراک محمد حسن احرامپوش m.h ehrampoush department of faculty of environmental health engineering, school of public health, shahid sadoughiدکترای بهداشت محیط، دانشیاردانشکده بهداشت، دانشگاه علوم پزشکی یزد مهدی مختاری m mokhtari department of faculty of environmental health engineering, school of public health, shahid sadoughiدکترای بهداشت محیط، دانشیاردانشکده بهداشت، دانشگاه علوم پزشکی یزد اصغر ابراهیمی a ebrahimi department of environmental health engineering, school of public health, isfahan university of medicدانشجوی دکترای بهداشت محیط، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان

زمینه و هدف: اکسیداسیون مرطوب با هوا (wao) یکی از روش های اکسیداسیون پیشرفته برای کاهش غلظت ترکیبات آلی در فاضلاب های صنعتی، ترکیبات سمی و غیر قابل تجزیه بیولوژیکی، شیرابه زباله و... است. هدف این پژوهش تعیین راندمان روش اکسیداسیون مرطوب با هوا در تصفیه شیرابه زباله کارخانه کمپوست اصفهان است.روش بررسی: نمونه شیرابه به حجم 5/1 لیتر وارد راکتور فولادی به حجم 3 لیتر شد و تحت فشار bar 10 و دماهای c°...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
ali nikoonahad phd candidate ,environmental science and technology research center, department of environmental health engineering, school of public health, shahidsadoughi university of medical sciences, yazd, iran. asghar ebrahimi assistant professor, environmental science and technology research center, department of environmental health engineering, school of public health, shahidsadoughi university of medical sciences, yazd, iran. elyas nikoonahad msc, islamic azad university of zahedan, iran. vahid ghelmani msc, islamic azad university of yazd, responsible director of yazd wastewater treatment plants, yazd, iran. amir mohammadi phd candidate ,environmental science and technology research center, department of environmental health engineering, school of public health, shahidsadoughi university of medical sciences, yazd, iran.

introduction:expensive chemical tests are usuallyapplied to control the efficiency of wastewater treatment plants. however, the cost of measuring these parameters is one of the challenges of the wastewater treatment plants. using statistical methods has been evaluated for possibility of calculating expensive parameters by measuring the inexpensive parameters in this study. methods:initial sampl...

Journal: :Biomass Conversion and Biorefinery 2022

The state-of-the-art paper packaging biorefinery utilizes cellulose fibrous material from paddy straw and papaya latex to produce products. This in turn generate wastewater with high organic matter content that if disposed without treatment will pollute water bodies affect aquatic life below water. Therefore, comply “clean sanitation” (SDG 6) “life water” 14), this study assesses the efficacy o...

ژورنال: :فصلنامه علوم و تکنولوژی محیط زیست 2010
ایران برایی مهدی فرزادکیا نعمت الله جعفرزاده

برکه هـای تثبیت فاضلاب به دلیل توان پـذیـرش شوک های بارآلی و هیدرولیکی،روش مناسبی برای تصفیه فاضلاب های شـهـری و بـسیاری از فاضلاب های صنعتی محـسـوب می شوند. هدف از این پژوهش بررسی تاثیر میزان بارگذاری مواد آلی درعملکرد تصفیه خانه  فاضلاب  صنعتی آبادان می باشد. این تحـقیق از اسفند ماه سال 1383 به مدت 10 ماه بر روی تصـفیه خانه شهرک صنعتی آبادان انجام گرفته است . در این طرح ضمن بررسی وضعیت عـملکر...

Journal: :jundishapur journal of health sciences 0
hadi eslami department of environmental health, shahid sadoughi university of medical sciences, yazd, ir iran parvaneh talebi hematabadi department of environmental engineering, meybod branch, islamic azad university , yazd, ir iran seyed vahid ghelmani wastewater and sewage organization, water and wastewater company, yazd, ir iran akbar salehi vaziri department of environmental engineering, meybod branch, islamic azad university , yazd, ir iran zahra derakhshan department of environmental health, shahid sadoughi university of medical sciences, yazd, ir iran; department of environmental health, shahid sadoughi university of medical sciences, yazd, ir iran. tel: +98-9176115365

conclusions with the proper operation of wastewater the treatment plant and increasing the retention time, the removal efficiency of the detergents increased. in addition, according to the environmental standards for bod5, cod and the detergents, the results of the present study indicated that the outputs of these parameters from the sbr system were appropriate for agricultural irrigation. resu...

سابقه و هدف: بحران آب در سال‌های اخیر سبب استفاده از پساب‌ها در سال‌های اخیر در بخش کشاورزی شده است. با توجه به نیاز روزافزون به پساب‌ها در کشاورزی، تصفیه پساب‌ها در کشور با هدف استفاده درکشاورزی در حال اجرا می باشد. بنابراین بررسی کاهش آلاینده‌های موجود در پساب‌ها ضروری می‌باشد. در این پژوهش استفاده از فیلترها و جاذبهای طبیعی نظیر زئولیتها، پرلیت و رزینهای آنیونی برای بهبود ویژگیهای پساب مورد ...

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