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Recent content by redgreen

  1. redgreen

    Basic disinfection of potable water in 3rd world

    I apologize if I am repeating what others have stated, but this post has had several responses and I haven't gone through them all in detail. I would suggest you think in terms of the multi-barrier approach and deal with all aspects of water supply from collection, treatment, supply/delivery...
  2. redgreen

    Vaporization of Liquid CO2

    I am looking for manufacturers of CO2 vaporizers. I need a unit that can produce approximately 160 kg/hr. If anyone has information (maufacturers, specifications) on a steam powered vaporizer it would be appreciated. Thanks
  3. redgreen

    Pump Suction Bell design

    Does anyone have any links to a good reference on specifying/design pump suction bells? Usually the pump manufactruer provides them to us but the last bell that was provided by pump supplier appeared questionable. Thanks
  4. redgreen

    Dechlorination

    I am working on a treatment plant that will be using sodium bisulphite to dechlorinate waste water that will be discharged to a lagoon. Does anyone have any information on the dosing rates of sodium bisulphite vs chlorine in order to effectively "dechlorinate" the water?
  5. redgreen

    Chemical Dosing

    Could someone direct me to a good reference (on the net) for calculating concentrations of solutions/slurries. For example if you are to add 5%(by weight) of lime to water, is there a way to calculate the resulting concentration of lime in the slurry/solution without actually taking field...
  6. redgreen

    graded gravel fill under placed soil

    I don't do much landfill work, but don't you typically cover landfills to prevent water from seeping into the landfill? Each site is different, however, if the landfill or cap is meant to act as an impermeable layer, then you wouldn't want any water draining into or out of landfill. I have...
  7. redgreen

    Chicago Storms

    Are there any software programs out there that can generate a chicago storm from IDF curves? (Preferably free software or spreadsheet)
  8. redgreen

    Stockpiling

    Sorry, I am looking at general clay fill and topsoil. About 1 milliion m³.
  9. redgreen

    Stockpiling

    Are there any tips or rules of thumbs out there for constructing stockpiles (i.e., max height, sideslopes etc.)

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