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Orange Juice Industrial Liquid Waste for irrigatio (Read 140 times)

OG Chile

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Cleaning Chile

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Orange Juice Industrial Liquid Waste for irrigatio
Jul 19^th, 2012, 11:47am

We were called into a fairly large Orange Juice producing plant and they wanted to use their treated liquid waste to irrigate. Their main problem was that the drippers were getting clogged up permanently. We took a sample of their Liquid waste, which passes thruough an initial Rotary Drum Filter and then pH corrected to 4 to 5 range. BOD levels acceptable. We placed the liquid waste in a beaker and after a couple of days we had a precipitant (dark orange) at the bottom. My guess is that this is what is obstructing the drippers. Any idea what this might be and how to control/eliminate/emulsify?

Thank you.

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grrun God Member Offline WaterandWastewa ter.Com is the best! Posts: 3525 Pekin, IL Gender: Company or Organization: Freelance Environmental Engine	Re: Orange Juice Industrial Liquid Waste for irrigatio Reply #1 - Jul 19^th, 2012, 4:34pm Have you checked the iron concentration of the wastewater? Exposure to air at even a low pH may oxidize and precipate trivalent iron from ferrous iron in solution. Citric acid may chelate Fe⁺⁺ and release it later (speculation on my part). Anyway, it might be worth checking out. grrun
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sobisch God Member Offline Posts: 1777 Gender: Company or Organization: L.U.M. GmbH	Re: Orange Juice Industrial Liquid Waste for irrigatio Reply #2 - Jul 20^th, 2012, 12:54am Dear OG Chile, speculation from my part: their waste water should contain pectins dissolved. After some aging - maybe biological - it seems to flocculate. You may first try to remove it by lime addition or coagulation. Kind regards T. Sobisch
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David S. Senior Member Offline I have nothing clever to say here. Posts: 373 Gender: Company or Organization: Environmental Express	Re: Orange Juice Industrial Liquid Waste for irrigatio Reply #3 - Jul 20^th, 2012, 7:42am sobisch wrote on Jul 20^th, 2012, 12:54am: You may first try to remove it by lime addition... If the limes don't work, see if some lemon addition helps. Sorry, couldn't resist the wordplay this morning.
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