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annracimo YaBB Newbies Offline I love Water and Wastewater.com Posts: 9 Company or Organization: student/researcher	evaporating landfill leachate Apr 01^st, 2012, 7:35pm has anybody heard of or done evaporation of landfill leachate? is it recommended?
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grrun

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Re: evaporating landfill leachate
Reply #1 - Apr 1^st, 2012, 8:30pm

My guess is that volatile organic compounds would be boiled off with the steam and collected with the condensate. This is probably more expensive than more convential treatments. If condensate is not collected (or possibly if it was) the volatile emissions would probably become an air pollution problem. Evaporation and distillation are more effective when salts or other low volatility compounds are the contaminants in the water.

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annracimo

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Re: evaporating landfill leachate
Reply #2 - Apr 1^st, 2012, 8:54pm

oh. i see. i didn't even know landfill leachates can be evaporated, i mean, in the commercial treatment sense. i thought biological treatment was the sure and best way to treat it. in your opinion sir grrun, what do you think is the best way to treat landfill leachate (especially now that we're unsure what its quality is since what we're going to handle hasn't been treated before. this is the first treatment that it'll get).

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grrun

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Re: evaporating landfill leachate
Reply #3 - Apr 1^st, 2012, 9:13pm

A wastewater characterization study of the landfill leachate would be a first step in determining the treatment train for this. Landfill leachates are not necessarily chemically uniform so that there is some risk in designing a treatment system without this important information.

If this is a real problem (as contrasted to a textbook problem); then you must find a way to characterize the leachate flow and composition before begining design.

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IanA1962 Ex Member	Re: evaporating landfill leachate Reply #4 - Apr 2^nd, 2012, 8:12am I've had a look at this issue for a client in Europe. As Gurun mentions, the Capex & Opex are prohibitive and at the end of the process you still ahve a concentrate requiring a route of treatment and disposal. I could be wrong, but I don't see this as a sustainable route of treatment and disposal of leachate.
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