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  1. Bogdanaquasys

    Pyrolusite backwash speed

    Hello, I try to design a filter with a granular media consisting of a mixture of pyrolusite and quartz (Q = 40 mc/h) I found in the technical sheet of the pyrolusite that the backwash speed is 25 gmp/ft2 (~62 mc/mp*h). But, I found in the data sheets from various equipment manufacturers that...
  2. Bogdanaquasys

    Pyrolusite filtration

    Hello, I try to design a filter with a granular media consisting of a mixture of pyrolusite and quartz (Q = 40 mc/h) I found in the technical sheet of the pyrolusite that the backwash speed is 25 gmp/ft2 (~62 mc/mp*h). But, I found in the data sheets from various equipment manufacturers that...
  3. Bogdanaquasys

    pyrolox filter

    Thank you Ashtree for your response. So,my answer for your question is: Does the water contain high levels of tannins , sulphur or chlorides? no tannins, no sulfur and chlorides is around 100 mg/l How are you measuring the manganese? two methods: 1 - in site with Hach Lange DR900 colorimeter...
  4. Bogdanaquasys

    pyrolox filter

    I have the fallow application: Pyrolox / sand filter with 2000 mm tank diameter. I fill the tank with 420 kg of quartz 2-4 mm on base. After that I put, in the succesive layer, 2360 kg of quartz 0.8-2 mm and 2120 kg pyrolox 8x20. Work condition is: filtering flow is 40 mc/h, backwash flow is 192...

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