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[外文摘要]
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Based on the characteristic of clay with minus
charges and the water molecules with plus charges,the
experiment used the means of electro-osmotic to electrify environmental
dredged sludge,made the water molecules have
polarity and flow to the cathode,and thus achived the purpose of dredged sludge dewatering .The
electro-osmotic method was used to do the dewatering research on
environmental dredged sludge of Taihu Lake,by ananlyzing its water
holding variation with time,the correlativity
between the effluent volume and energy consumption,and
the effecting factors and optimizing scheme.Theexperiment
indicates that the water holding ratio of sludge can be depressed from
38.72%to 32.85% after 240h dewatering experiment by electro-osmotic,the water holding ratio can been expressed in
short time.At the same time,the
experiment indicates that the means of electro-osmotic is effected by water
holding ratio,grads of voltage,the
enduring causticity of poles,disposal manner of poles,the improvement of the material of poles can
enhance the effect of electro-osmotic and depress the energy consumption.When comparing different disposal manners
of poles,it is found that the line disposal
manner of poles is more propitious to discharge the water from sludge than
the ring disposal manner of poles.By economic
analysis of electro-osmotic,it is found that the
expense of construction is about 4.29yuan per m3 undisturbed soil to
dewater environmental dredged sludge by electro-osmotic.
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