نتایج جستجو برای: bod5
تعداد نتایج: 901 فیلتر نتایج به سال:
This paper presents some results of investigations for the characterization of waste excavated from closed landfills and of waste sampled during mechanical-biological pretreatment before disposal in landfill. The results reported are those obtained with the tests carried out for the assessment of the biological stability of the waste. Some of the considered tests, such as the ones for the deter...
The 4,000 PE (700 m(3)/d) wastewater treatment plant at Balf, Hungary was based on sequencing batch reactor technology with phosphorus precipitation as the tertiary step. Its effluent met quality thresholds on average, with above-threshold peaks mainly in winter. The HYDRUS/CW2D model package (PC Progress s.r.o.) was used to simulate the treatment performance of a horizontal flow constructed we...
Across the nation, food service establishments using onsite wastewater treatment systems often experience pretreatment system and/or drain field performance problems. This study used statistical analysis of restaurant management practice and primary cuisine type to observe their influence on five-day biochemical oxygen demand (BOD5), total fats, oils, and greases (FOG), total suspended solids (...
محدودیت سنسورهای سختافزاری برای اندازهگیری برخی مشخصههای کیفی آب مانند اکسیژنخواهی بیوشیمیایی 5 روزه (BOD5) که از لحاظ زمانی هزینهبر هستند، تلاشها را به سمت استفاده از سنسورهای نرمافزای برای پیشبینی بهنگام BOD5 سوق داده است. هدف اصلی مقاله مذکور نیز توسعة سنسور نرمافزاری مناسب بر مبنای مدلهای هوشمند شبکة عصبی مصنوعی (ANN) و ماشین بردار پشتیبان (SVM) برای تخمین بهنگام BOD5 در رودخانة س...
recently, hardware sensors are widely used in monitoring and measurement of water quality parameters. constraint of the instrument to measure some water quality parameters such as the 5-day biochemical oxygen demand (bod5), which are time consuming, causes efforts are diverted to the use of software sensors for online prediction of bod5. the main goal of this research is developing an appropria...
زمینه و هدف: برکه های تثبیت به عنوان روش های تصفیه طبیعی، از جمله سیستم های موفق در تصفیه فاضلاب شهری و خانگی شناخته شده اند و از نظر هزینه های انرژی و نیروی انسانی بسیار مقرون به صرفه می باشند. از طرفی پایین بودن بازده خروجی و کاربری زمین زیاد از جمله معایب این برکه ها می باشد که کمتر مورد توجه قرار گرفته است. لذا در این تحقیق، روش های بهینه سازی برکه های بیهوازی مورد بررسی قرار گرفته است. مو...
This study aims to evaluate the performance of sewage treatment plant in Al-Diwaniya, one cities southern part Iraq. evaluation could be used facilitate effluent quality assessment or optimal process control plant. The influent reaching is considered a medium strong strength with BOD5/COD ratio range 0.23 and 0.69 which can an easily degradable by biological processes performed activated sludge...
Many of the current strategies for removing pollutants from water are based on nanomaterials and nanotechnology. Lower values Biological Oxygen Demand (BOD5) Chemical (COD) in results reduction amount oxidizable pollutants. We present a study COD BOD5 Wadi El Bey River (Tunisia), using magnetite nanoparticles (MNPs) magnetic fields. The removal reached higher than 50% after 60 min, with optimum...
Understanding the characteristics of non-point sources (NPS) pollutions can provide theoretical support for improving water quality. Siheshui watershed located in south China was selected to explore the characteristics of NPS pollutions in rainfall-runoff process. In this small agricultural watershed, five flood events and one non-flood event were monitored, and the water quantity and quality c...
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