Waste water treatment using anaerobic digestion

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Looking for recommendation of standard anaerobic waste water treatment software that can estimate biogas against daily flow rates

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3 Answers

  1. I believe Mr. Milne's response was targeted towards a municipal application for anaerobic digestion and solids reduction. If you are dealing with a high strength industrial wastewater, then you should use the total organics (like COD, TOC) in the waste stream to track biogas production. This will vary for each industrial application, based on your wastewater characteristics.

    1 Comment

    1. Yes, I was thinking municipal. Just too many questions if it is an industrial site. I came from pulp and paper and we had to track changes in grade and production rate. 

  2. Mark Milne Thank you   Perfect Answer with Validated experience . Instead of daily flow rate, it is necessary to monitor and know what it has in terms of Digestible Solids.

  3. Not sure what kind of system we are working with here. Unless you are working with an industrial site, I would think flow would be a poor predictor. Gas production in an anaerobic digester is estimated between 0.8 and 1.1 m3/kg of volatile solids destroyed ( 13 and 18 ft3/lb of volatile solids destroyed) (WEF.org). So your production relies on the amount of digestible volatile solids sent to the digester.

    Typically at my plant, there are not large changes in the total solids to volatile solids ratio going to the digester, so gas production could be predicted from total solids loading. Our loading is fairly stable. The flow increases won't change the solids loading much as it is usually from I/I or rain. Usually I get more dirt with higher flows which doesn't increase gas production.