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Register a new userOptimization performance of the thin film fixed bed reactor for the treatment and recyclic of waste water in Damascus
تحسين عمل المفاعل الوساطي الشمسي في معالجة المياه الملوثة، و إعادة استعمالها
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Damascus University ورقة بحثية
Publication date
1997
fields
Physics
and research's language is
العربية
Created by
Shamra Editor
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يقدم هذا البحث وصفًا مبسطًا لعمل المفاعل الوساطي الضوئي، ذي الطبقة الرقيقة الثابتة TFFBR, و لطريقة توضع / ترسيب الوسيط الضوئي TiO٢ المستعمل؛ و يقدم نتائج دراسة قوة ارتباط الوسيط المذكور مع السطح الحامل، و تطوير طريقة حديثة لقياس دليل التصاقه و تغيراته مع تغيرات درجة الحرارة، و الطبيعة الميكانيكية للسطح الحامل للوسيط. تم كذلك دراسة كفاءة استخدام المفاعل TFFBR في معالجة عينات من المياه الملوثة النموذجية الحاوية DCAA, و عينات أخرى من مياه بردى، في الشروط المحلية السائدة في مدينة دمشق.
A simple description of the thin film fixed bed reactor (TFFBR) is given. The work has applied different methods of sedimentation of the solar catalyst suspension, including a new development of the method being used to meaure the fixation index as well as, the study of the temperature and mechanicaly - treated surface effects. The results of original waste water (taken from Barada river - Damascus) treatment, and a model waste water (with DCAA) treatment, Using the TFFBR , under SYRIAN climatic conditions, were discussed too .
References used
H . Gerischer , Topics Appl . phys1979
D . W . Bahnemann, et al , Al - Ekabi H (eds). Elsevier Science publishers , Amsterdam1995
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Biological Denitrification process in anoxic fluidized bed reactor is a simple
way to eliminate nitrate – nitrogen that pollute the groundwater.
In this method the biofilm (including organic bacteria) was cultured on the
reactor bed particles, whi
ch we chose granular activated carbon (1-3) mm.
The raw water containing Nitrate ions and bacteria nutrients was pumped
into the bottom of the reactor in an adequate velocity to fluidize the bed
particles holding the biofilm.
Ethanol and DeHydrogenated Sodium ortho phosphate was chosen as
bacteria nutrients, Ethanol as carbonic nutrient and DeHydrogenated
Sodium ortho phosphate as phosphoric nutrient.
In this study, a simulation of the MTR-22MW reactor and a study
of standard and mixed fuel combustion using the Codes GETERA
and MCNP5.
The Results of the simulation showed that the operation time of the
reactor in the case of standard fuel is 274 days and if the use of
mixed fuel is 135 days.
In this study, iron chloride solution ١٠٪ was used as absorbance matter
which absorbs all dyes and the organic substances during its precipitation .
The accumulation of these wastes in nature is considered to be a serious source
of pollution and h
ealth hazard. We determined the optimal pH and the optimal
dose of a minimom number of the reagent used as well as the water of
dyehouse baths, and we compared the difference between using iron chloride
and aluminium sulfate .We adopted the experimental observation in measuring
the results and the strength of absorption within the spectrofield in a wave
length of ٣٥٠ – ٧٥٠ nanometer .
In this study, microorganism separated from the Syrian soil were used in
treating the waste water from dyehouse and some dyes which are oftenly
applied. A great difference was found in the speed of microorganism growth as
well as the great variati
on in color disappearance, in addition to inactivating
the enzymatic work by some of the dyes. Also, the effect of the dyes density on
the growth of microorganism. The absorption strength measurment in the field
of visible spectrum between ٣٥٠ –٧٥٠ nanometers was adopted for analyzing
the filtrates resulting from the biological treatment .
The crisis in Syria heavily impacted public infrastructure as well as the provision of
basic services. This strongly affected the population in all Syrian governorates since the
beginning of the crisis seven years ago. The water sector is considere
d one of the most
affected. Hostilities led to damages in the networks and ensuing water cuts. In addition,
main pumping stations, boreholes and sanitation networks ceased to function. This
research aims at identifying the locations and extent of damages in the water networks in
Homs governorate based on the percentage of water and sanitation networks as well as
solid waste management services compared to the pre-conflict situation. The research
depends on utilizing the Geographic Information Systems (GIS) based on descriptive data.
The information used comprises primary data collected in the field using structured
questionnaires filled by the local population as well as secondary data produced by
humanitarian organizations, SARC and governmental institutions. The results show
decreased the coverage of water and sanitation networks in Homs Governorate notably
outside the county centers while it is almost non-existent in the urban areas. The latter
include the southern and eastern counties Al Qariateen, Sadd, Mheen, Al furqulus, Al
Ruqama and Hisia. Furthermore, more than half of the population living in the eastern
urban areas rely on water trucking. The discontinuity of municipal services and
malfunction of solid waste removal trucks resulted in the accumulation of waste in many
areas. Therefore, the state of solid waste management is evaluated to be mostly “bad”,
while the reminder only reaches “medium” category, which means, the municipalities do
not collect the waste, or collect and dump inside the city .This situation strongly increases
the risk of an outbreak of infectious diseases.
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