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The Simulation and Analysis of Rate Changeson Filtration

Author: ZhangHuiQin
Tutor: ZhangJianFeng
School: Xi'an University of Architecture and Technology
Course: Municipal Engineering
Keywords: V-filter Fluctuations filtration rate Sudden increase in filtration rate Turbidity
CLC: TU991.2
Type: Master's thesis
Year: 2010
Downloads: 61
Quote: 0
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Abstract


Filtration is an important part of the conventional drinking water treatment processes . Theoretical analysis and production practice shows that the filtration rate changes will directly affect the filtration cycle and water quality . Changes in the filtration rate of the filtration performance of research , has a very important significance in water quality control . The topics proposed by the model experiments to study the filtration rate variation and its effect . By filtering simulation comparison test , in accordance with different amplitude , frequency change variable filter speed with the corresponding constant filtration rate , resistance to hydraulic shock loading capability , such as differences in the amount of filtered water turbidity , filter layer deposition distribution , The final constant filtration rate filtration rate experiment sudden increase in water analysis , and compared with the fluctuations filtration rate water . Kaolin flocculation filtration test results show that : ( 1 ) fluctuations in the filtration rate , filter effluent turbidity fluctuations related to the amplitude and frequency of the fluctuation range of filtration rate fluctuations , the amplitude of the greater , the higher the frequency , the filter effluent turbidity change the greater the magnitude . Fluctuations filtration rate filter and constant filtration rate filter effluent turbidity average between the two and there is not much difference . ( 2 ) fluctuations in the filtration rate of the floc in the depth of the filter layer has a certain role , so that the entire filter layer can be more fully utilized . Filtration rate, the greater the amplitude of fluctuations , the higher the frequency , the greater fluctuations floc distribution impact of the filter layer . ( 3) uniform filtration , filtration rate increase causes the water to deteriorate rapidly , the greater the increase in turbidity of the sudden increase in the filtration rate greater water situation has begun to restore the maximum deterioration in value , the maximum time of occurrence of the sudden increase in the filtration rate has nothing to do . Fluctuations filtration rate effluent turbidity maximum value is far less than the maximum deterioration in the value of its constant speed filter filtration rate is the sudden increase in water turbidity . Oxidation - and manganese removal filter test results showed that: ( 1) uniform filter running late , as the filter layer is still a great protective layer filtration rate increase may not appear the phenomenon of deterioration of water , but eventually it will filter layer in advance penetrate . (2 ) the filtration rate of the waviness filtering penetrate slightly ahead of schedule , and penetrate quite significant .

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CLC: > Industrial Technology > Building Science > Municipal Engineering > Water supply project ( on the Water Works ) > Clean Water ( water treatment )
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