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Register a new userEconomical value investigation of olive mill wastewater pretreatment
دراسة الجدوى الاقتصادية للمعالجة الأولية لمياه صرف معاصر الزيتون
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محمد وجيه عيسى( باحث )
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تعتبر المعالجة الأولية من أهم العمليات المرحلية في محطات معالجة صرف معاصر الزيتون. تظهر الدراسة الاحصائية بأن كلفة المواد الكيميائية المستخدمة في المعالجة الأولية لا تتجاوز تقريباً 0.02 €/m³OMWW كما هو الحال عند استخدام أنواع محددة من المخثرات الكيميائية اللاعضوية كالكلس على سبيل المثال.
Pretreatment is one of the most important stage in olive mill wastewater (OMWW) plants. Statistically, the cost of chemicals in pretreatment will be not more than 0.02 €/m³OMWW for some kind of chemical coagulants such as CaO.
References used
Ginos, A., Manios, A., Mantzavinos, D. Treatment of olive mill effluents by coagulation– flocculation–hydrogen peroxide oxidation and effect on phytotoxicity Journal of Hazardous Materials B133 (2006) 135–142
Henze, M., Harremoes, P., Jansen, J.L.C., Arvin, E. Wastewater Treatment Springer Verlag, Berlin 1995, pp. 120-121
Hilal. M., Issa, M. Olive mill wastewater contaminants destroying by fungal sludge (Arabic edition) Al-Baath uni magazine, Vol.33, 2011
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Since the reaction in the WWPs bioreactors is included in enzymatic
catalytic reactions type, then the kinetic coefficients can be
determined due to Michaelis-Menten model. A tow-parts
computational program was built by means of MS Excell.
Phenolic compounds are known to be present in high concentration
in various of agro industrial wastes such as olive mill wastewater. As
they are highly biorecalcitrant a possible treatment by Advanced
Oxidation Processes has to be investigated.
T
he photocatalytic degradation of the phenolic acids p-Hydroxybenzoic
acid, Dihydroxybenzoic acid, gallic acid, vanillic acid, syringic acid) in the
presence of TiO2 deposit on a glass plate has been reported. A comparison for
the adsorption properties and the kinetics of reaction have been studied. The
kinetics were found to be first order for all compounds and were compared
with the compounds’ structures. The reaction rate for the compounds was
found as the order Di-HBA < GA < p-HBA ≈ SA ≈ VA.
The influence on the photdegradation rate of various parameters as pH, and
substrate’s concentration was studied for p-Hydroxybenzoic acid only. It was
found that the reaction is pH and substrate’s concentration dependence.
A removal efficiency (50-70%) was determined after 5hr using UVlamp
(15W- λ=360nm) and it increased up to 95% when H2O2 was
added.
The present study contains results of some experiments that had been
carried out to study the advantage of olive mill waste water (OMW) use ability
and in sugar's factories wastes in Syria as fungi cultures to produce stall-feed
rich in proteins.
The results showed that Geotrichum rich in proteins had been grown and
geminated more rapidly and revealed that inorganic nitrogen additions
(nitrates or ammonia) to the culture have advanced the fungi growth which is
rich in proteins, the highest quantity of proteins was (8.6 g/l) in NH4NO3 (1.5%)
media and urea (2.0%) media whereas the fungi biomass was higher with
NH4NO3 (1.5%) than with urea (2.0%).
The adsorption ability of those pollutants by the Anion exchanger
( A36MB ) have been studied. A good results have been obtained
after( 8 hour ) as a real time of this operation . The removal ratio
reach up to( 96.62%) , when the quantity of the s
olid ( Anion
exchanger) was about 10 gr and the wastewater about 150 gr
where the ratio of( sold/water) was about 6.666 % .
3,4-dihydroxybenzoic acid is one of phenolic compounds that exists in olive mill waste water (OMWW) and different industrial wastewater.Commercially activated charcoal was studied as absorbent of polyphenols. The value of specific surface area was 73
6.7189 m2/g. Equilibriums of 3,4-dihyroxybenzoic acid from aqueous solutions on four different particle sizes of the adsorbent with diameters ranged A(1000-2000), B(500-1000), C(250-500), D(125-250)m was examined at different initial concentrations ofabsorbate. The experimental data were analyzed using the Langmuir and Freundlich isotherm models. Both the isotherm models fit the adsorption data. Monolayer absorption capacities Q0 calculated from Langmuir equation were (0.36, 0.23, 0.34, 0.35mmol/g) for the different granular activated carbon sizes (A,B,C,D) respectively. The values of constant Kf calculated from Freundlich equation were (0.75, 0.61, 0.76, 0.79mmol/g) for the four sizes of granular activated carbon (A,B,C,D) respectively.
The results show that the charcoal activated carbon can be used as absorbent for polyphenol compounds.
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