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Recent content by dfman

  1. dfman

    Ammonia Scrubber Particulates

    Yorkjim I was offering advice, not stating an "absolute truth" or being a smart arse. Instead of stating someone is wrong, why don't you try and make sure you are right first? And, by the way, keep to the topic. Following the line of argument about ammonium chloride particulate in packed bed...
  2. dfman

    Opinions RTO for Thermal Oxidation

    93Buckeye, Suggest you chat with Adwest in USA - we work with them in selling Regenerative Thermal Oxidisers in Australasia. Contact either Brian Cannon at NY office adwestny@adelphia.net or Joe Terry In California at adwestusa@ioc.net I hope this helps ctairman
  3. dfman

    Ventilation of Enclosed Primary Clarifiers

    Hi there Just read your questions re clarifier covers. This question is always a difficult one to answer. Different people will give you different answers depending on their experience. Aussie Mike's comments pretty much sum up the situation in Australia. A "cover and treat&quot...
  4. dfman

    Caustic Scrubber Recirculation Pump Problems

    Hi there We are having trouble with a caustic scrubber recirculation pump that keeps getting gummed up with fine precipitate behind the impellor, causing failure & plant shutdown. The pump is from a reputable supplier, who has not seen the problem before, despite having supplied several units...
  5. dfman

    H2S removal from air

    Another way of treating H2S in the gas phase is to use BioTRickling Filters, a form of biological scrubber. Often when you remove the H2S you will find other low odour concentration compounds that produce an offensive smell, so you might need to consider polishing technologies such as...
  6. dfman

    Odors from deep well - open to atmosphere

    Webfoot Could you explain as to whether there is an existing air extraction system to remove odours from the well? (If you are getting complaints I suspect there isn't) You need to move enough air to treat the volume displaced when the tankers drop the waste, and then some to make sure all...
  7. dfman

    Ammonia Scrubber Particulates

    We have looked at this problem theoretically. Problem with packed bed scrubbers is that they will block up with particulate very quickly. One solution might be Fluid Bed Scrubbers, with turbulent packing for the scrubbing of gases and particulates in one phase. Contact Clean TeQ in Australia...
  8. dfman

    Scrubbing of Methyl chloride ( CH3Cl)

    Methylene chloride leads itself to good removal using BioTrickling Filters Contact Clean TeQ in Melbourne, Australia for further details Hope this helps ctairman info@cleanteq.com
  9. dfman

    VOC abatement with the help of ionisation

    I agree with Peter AB - Ionisation systems for VOC control are not scientifically based!!! Having said that it is possible to treat organic odours at very low concentrations using Active Oxygen systems. Generally your options for VOC abtament will include Thermal oxidisers Regenerative Thermal...
  10. dfman

    Odors from deep well - open to atmosphere

    Venturi Scrubbers could be of use if you have particulate but for gas phase treatment biolgoical or chemical scrubbers are better due to the low operating pressure (say 2 kPa) compared to venturi (6 to 8 kPa) and high transfer steps available through packing. For this application BioFilters...
  11. dfman

    Odors from deep well - open to atmosphere

    Hi there The main consideration in treating sewage odours effectively is to collect the air effectively and send it for treatment to suitable technologies such as BioFilters or Activated Carbon, so that diffuse odour leakage risk is minimised. You need to calculate the amount of air to be...
  12. dfman

    H2S removal from air stream

    Hi there For high airflow volume & high level H2S removal (>100 ppm H2S) your main options will be either chemical or biological treatment. At this specification activated carbon is going to be very expensive to buy & dispose of waste material every 12 months If you have chemicals available...
  13. dfman

    Odors From Ventilation

    Amines lend themselves best to removal using Biological systems like BioFilters etc. Contact Clean TeQ in Australia for more info Hope this helps ctairman info@cleanteq.com
  14. dfman

    Gas seperator / scrubber.

    We have seen this problem before on odour problems with maltings roasters. The tar is caused by a visible fume that cools down. The existing thermal incinerator fails to get rid of the smell & lets the fume through. The tar is a problem as it will clog up scrubber, BioFilter & regernative...
  15. dfman

    Caustic Scrubber Recirculation Pumps

    Hi there We are having trouble with a caustic scrubber recirculation pump that keeps getting gummed up with fine precipitate behind the impellor, causing failure & plant shutdown. The pump is from a reputable supplier, who has not seen the problem before, despite having supplied several units...
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