Effectiveness of an Upflow Roughing Filter for High Turbidity Water
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Effectiveness of an Upflow Roughing Filter for High Turbidity Water

Effectiveness of an Upflow Roughing Filter for High Turbidity Water


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About the Book

In Chakwal, highy turbidity rainwater runoff and streamflows are collected in Khokhar Zar Dam to be used for water supply. Slow sand filtration (SSF) is a low-cost technology for treating raw water with turbidity below 50 NTU. Objectives of the work reported here include: study of current treatment process and highlight problems related to quality management, design and construct a pilot scale upflow roughing filter plant and to determine the optimum coagulant dose for in-line roughing filtration. The pilot plant constructed could reduce raw water turbidity from 450 NTU (Avg) to 2-10 NTU making SSF a viable option. There were a number of promising outcomes: the monitoring of physical parameters (turbidity, pH and conductivity) of raw and treated water at Chakwal water treatment plant (CWTP), the performance evaluation of multistage and multilayer UFRF, 30-50 percent removal efficiency by multistage UFRF and 30 percent by multilayer UFRF, the in-line coagulation to UFRF reveals 99 percent removal efficiency at 21/2 fold reduced coagulant dose (47 mg/L of alum vs 122mg/L by the facility management and 65 mg/l of Ferric Chloride against the same).


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Product Details
  • ISBN-13: 9783639331233
  • Publisher: VDM Verlag
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Spine Width: 9 mm
  • Width: 152 mm
  • ISBN-10: 3639331230
  • Publisher Date: 29 Jun 2011
  • Height: 229 mm
  • No of Pages: 152
  • Series Title: English
  • Weight: 281 gr


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