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[9000509.] رقم البحث : 9000509 - |
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Pretreatment and Elimination of Toxicants from Industrial Waste Water Treatments. / |
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Agricultural Research Journal Suez Canal University / |
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H.A. Shabana. |
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A.A.El-sebae. |
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A. S. Abd AlKarim. |
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Olive, waste water, olive oil, Toxicants, Industrial Waste Water Treatments. |
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Olive mill waste water (o.m.w.w) generated by the olive oil extracted industry is a great pollutant due to its high organic load.It is dependent upon the type of olive oil production process used.In this study the traditional & continuous process of oil extraction evaluated. Also the applicable & alternative methods for treatment of waste water dealing with aphysiochemical consideration of the properties. The results indicated that the Total Soulble Solids(T.S.S), Volatile Soulble Solids(V.S.S),Fixed Solids (F.X), Chemical Oxygen Demand(COD) and Biological Oxygen Demand after 5 days)(BOD5)were more significantly higher in continuous mills than in traditional mills , but the value of (T.ph.s)Total polyphenols was slightly higher in continuous mills than in those traditional mills, the use of (PAC) powdered activated carbon achieved a highly significant removal % of T.ph.s,T.S.S,V.S.S,F.S,COD&BOD5 arranged in a descending order as in the following:60%,50%,50%,50%,43%&22% respectively. In case of treatment with a mixture of (2:1)% of (NaOH+Na2CO3),the percent of removal of T.ph.s,T.S.S,V.S.S, F.S,BOD5&COD were highly significant&arranged in a descending order as in the following:60%,40%,40%,40%,30%&25% respectively.And by using a mixture of (NaOH+Na2CO3) at a rate of (3:1) proved a more highly significant removal for the T.ph.s,T.S.S,V.S.S,F.S,BOD5&COD.These values of removal were arranged in a descending order as in following:75%,50%,50%,50%,47%&40% respectively.The use of FeSO4.7H2O was more effective in lowering the values of T.S.S,V.S.S&T.ph.s than FeCl3.6H2O &were arranged in a descending order :40%,40%&30% respectively .While the use of FeCl3.6H2O was too more effective in decreasing value of F.S,COD and BOD5 68%,50% & 30% respectively. Also it can be mentioned that the increase of H2O2 concentration to 5 ml at 2.5 gm of FeSo4 improved organic matter degradation ,however excessive amounts of oxidant to 10 ml has no or even a slight adverse effect on performance due to H2O2 induced radical scavenging.It is very common that the national & international goal for the control of water pollution is the elimination of pollutants discharge into navigable waters.Also the industry improvements often finds that it is more economic to treat waste water for reuse than discharge into Environment. |
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