تاثير الجزيئات وحجم الندف على معالجة المياه بواسطة العمليات الفيزيائية - الكيمياوية لمياه النهر == Effect of Particle Floc Size On Water Treatment By Physico - Chemical Process
Author name:
مهند ابراهيم فرحان
Supervisor name:
ثامر جاسم محمد
General topic:
Chemical Engineering
Specific topic:
Chemical Processes
Degree:
Master
University:
University of Technology - Department Of Chemical Engineering - Chemical Process Engineering Branch
Language:
English
University location:
Baghdad
First pages:
38T317 - p.pdf
Abstract:
يتضمن هذا العمل دراسة تاثير حجم الجزئيات وحجم الفلوك المتكون على عملية التخثر - التلبيد عن اضافة المخثرات واجريت التجارب باستخدام عينة من الماء الطبيعي التي اخذت من نهر دجلة، مع في مستوى ( 55 NTU ) التعكر. واستخدمت ( Jar - test ) لتحديد الظروف المثلى لازا | This work includes the study of the effect of particle size and floc size formed on the process of coagulation - flocculation by the addition of coagulants.Experiments were conducted using a sample of natural water which was taken from Tigris River, within the level of (55) NTU turbidity. Jar - test was used to determine the optimal conditions for the removal of turbidity through coagulation - flocculation and sedimentation.Several experiments were carried out to investigate the effect of flocculation time 1,6 and 20 min, coagulants dose and camp No. on the residual turbidity or removal efficiency ,floc size or floc formed that have greater Intensity, floc strength and recovery factor, largest volume, greater surface area and the most number and properties of electrical particle such as (zeta potential ,mobility , frequency). The floc growth, breakage floc size and regrowth of different type of coagulant were investigated by a laser diffraction particle sizing device (zeta plus).The coagulants used were alum, FeCl3, polyelectrolyte (PE), alone or in combination of them.
