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Customer questionnaire : Wastewater treatment plants


  • A) Basic Data
    • 1. Purpose of the S.T.P.
    • 2. S.T.P. capacity with proposed extension (if any)
    • 3. Time of operation of the S.T.P.
    • 4. Method of sewage supply to the S.T.P.
    • 5. Sewage flow fluctuation during the year (with regard to seasonal industries)
    • 6. Sewage flow fluctuation during the day (with regard to daily shifting of labour), with a maximum flow per hour
    • 7. Analysis of sewage water to be treated (as per sheet attached)
    • 8. Purification grade required, in per cent BOD5 (COD) or suspended matter
    • 9. Point of destination of treated water flow
    • Sludge disposal system required; give also proposed utilization of sludge from the treatment process

  • B) Site Data
    • 1. Site location
    • 2. Site elevation above sea, and local elevations
    • 3. Average, maximum and minimum ambient temperature
    • 4. Yearly relative humidity with daily maximum
    • 5. Site layout drawing or dimensional data about site area
    • 6. Power supply available



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