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Haya

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Everything posted by Haya

  1. Do you mean the error that occurred in measurement? Thanks
  2. Thank you but please, could you explain that in more details?
  3. What does this symbol mean? I pointed to it using the red color. http://www5.0zz0.com/2016/12/22/18/706933985.jpg
  4. I read it on the internet and i thought it was wrong. I just wanted to make sure about it. What i know that carbon dioxide and steam give off H2CO3 that is a weak, unstable acid. CH4 + 2O2 ---> CO2 + 2H2O CO2 + 2H2O ---> CH4 + 2O2 May be the first reaction is driven in the opposite direction as shown in the second reaction, but it seems that it needs high pressure and temperature. However, it may be wrong after all.
  5. "In field implementation of anaerobic digestion, the animal manure itself acts as seed inoculum and the process may reach its stability within 20-30 days of operation". What is the meaning of seed inoculum?
  6. Thank you for your help but i'm sorry, my original language isn't English and i can't understand you. Could you say that again in a more simple way, please?
  7. My queries are related to those employed in water purification not in general.
  8. My original language isn't English and google search explains them in a complex way for me, so i need someone make them simple and easy to understand.
  9. "Particles can aggregate and settle out of solution through four basic mechanisms: double layer compression, sweep flocculation, adsorption and charge neutralization, and adsorption and interparticle bridging (34, 35)." I can't understand these mechanisms, would someone explain them, please?
  10. What are exactly the jobs of the outlet pipe, the displacement tanks, and the loose cover in the anaerobic digester? I pointed to them using the red color. http://www9.0zz0.com/2016/12/10/16/748494966.jpg
  11. Haya

    What is HRT?

    What is the meaning of hydraulic retention time (HRT) in anaerobic digestion?
  12. What is the difference between dispersed-growth bacteria and attached-growth bacteria?
  13. Thanks! I am working on anaerobic digestion, could you explain me this equation because i can't understand it, please? (BODL stabilized – BODL for cell production) And what is the difference between dispersed-growth digesters and attached-growth digesters?
  14. What is the difference between anaerobic bacteria and aerobic bacteria whence the ability of decomposition of organic matters? Can anaerobic bacteria decompose something like straw?
  15. Haya

    ASTM standards

    Thank you so much!
  16. Haya

    ASTM standards

    What i mean is that there are a lot of societies that put standards for experiments and tests including ASTM, AWWA, ISO....etc, are these societies ranked from the most recommended to the least?
  17. Haya

    ASTM standards

    Thank you so much, but excuse me: is it really that ASTM is the best for standards? I just want to know.
  18. Hi, isn't there any way to get the astm standards for free? Is astm the best for standards?
  19. Yeah, it is me fault, sorry. The second topic has been removed.
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