Treatment of Raw Water in Yangtze Chenhang Reservoir by Diatomaceous Earth Precoat Filtration

Wen Qi Zhou; Dong Zhang; Hui Ye; Zheng Wang; Zheng Yang; Chun Lin Zhang

doi:10.4028/www.scientific.net/AMM.580-583.2380

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 580-583Treatment of Raw Water in Yangtze Chenhang...

Treatment of Raw Water in Yangtze Chenhang Reservoir by Diatomaceous Earth Precoat Filtration

Abstract:

Taking the raw water of Yangtze Chenhang Reservoir as the research object, the characterization of diatomaceous earth, and the removal efficiency of COD_Mn, turbidity by precoat filtration process were investigated by pilot experiment in this paper. The results showed that diatomaceous earth patterns having porous structure and the pure silica peak at 2θ angles 21.980, 36.080, 31.460 and 28.430 in XRD analysis. Precoat filtration has a good stability to remove solid suspended particle, effluent turbidity was remained about 0.05NTU. Precoat filtration had no effect on removing COD_Mn. The pressure of 50KPa could be defined as a critical point in this experiment. Beyond the critical point, the devices should be stop and backwash, to resume operation pressure. Overall, precoat filtration can be defined as a filtration technique for relatively low turbidity raw waters.

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Periodical:

Applied Mechanics and Materials (Volumes 580-583)

Pages:

2380-2383

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.580-583.2380

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Online since:

July 2014

Authors:

Wen Qi Zhou*, Dong Zhang, Hui Ye, Zheng Wang, Zheng Yang, Chun Lin Zhang

Keywords:

Diatomaceous Earth, Drinking Water Treatment, Precoat Filtration, Turbidity

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References

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