Evaluation of Filter Coefficients λ and σ for Iron Removal by Rapid Sand Filtration

1987 ◽  
Vol 22 (2) ◽  
pp. 234-250
Author(s):  
K.S. Narasiah ◽  
T.D. Dao Dany
Keyword(s):  
Iron Oxide ◽  
Iron Removal ◽  
Iron Sulfate ◽  
Sand Filtration ◽  
Exponential Equation ◽  
Specific Deposit ◽  
Rapid Sand Filtration ◽  
Stock Suspension ◽  
Second Degree

Abstract Studies wore conducted on a sand bed filter using stock suspension of iron sulfate. By measuring precisely the amount of iron oxide deposited in each layer of sand the coefficients of filter, namely the impediment modulus λ and the specific deposit coefficient σ, are evaluated. Also the phenomenon of “breakthrough” has been explained. From the results obtained it is found that an exponential equation of second degree can adequately describe the process of iron removal by rapid sand filtration.

Adaptive Neuro-Fuzzy Modeling of Head Loss in Iron Removal with Rapid Sand Filtration

2008 ◽  
Vol 80 (12) ◽  
pp. 2268-2275 ◽  
Author(s):  
Mehmet Çakmakcı ◽  
Cumali Kınacı ◽  
Mahmut Bayramog˘lu
Keyword(s):  
Fuzzy Modeling ◽  
Head Loss ◽  
Iron Removal ◽  
Sand Filtration ◽  
Neuro Fuzzy ◽  
Rapid Sand Filtration

Removal of Nematodes by Rapid Sand Filtration

1969 ◽  
Vol 95 (1) ◽  
pp. 1-16
Author(s):  
Irvine Wen-Tung Wei ◽  
R. S. Engelbrecht ◽  
John H. Austin
Keyword(s):  
Sand Filtration ◽  
Rapid Sand Filtration

Iron and manganese removal by a membrane filtration system

2001 ◽  
Vol 1 (5-6) ◽  
pp. 357-364 ◽  
Author(s):  
Y. Jimbo ◽  
K. Goto
Keyword(s):  
Membrane Filtration ◽  
Manganese Concentration ◽  
Sand Filtration ◽  
Design Standards ◽  
Manganese Removal ◽  
Filtration System ◽  
Small Capacity ◽  
Rapid Sand Filtration ◽  
Removal System ◽  
Iron And Manganese

The design standards of the iron and manganese removal system by membrane filtration were investigated. The membrane filtration after pre-chlorination could remove iron completely and could remove around 70% of manganese. In the case of manganese concentration being more than 0.05 mg/l, the membrane filtration could remove them completely after the deposition in the oxidation tank. The concentrations of iron and manganese were reduced more than 90% by the oxidation tank and were reduced until under the detection limit after the membrane filtration. The economic comparisons between the rapid sand filtration system and this membrane filtration system in a small capacity and a middle capacity were investigated. The 15 years total costs of the membrane filtration system were estimated to be smaller than or around equal to the rapid sand filtration system in both capacities.

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