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Water and Wastewater.com Help Forums › Water and Wastewater.com - Help Forum › Water & Wastewater Treatment Forum › UASB effluent PH increased
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UASB effluent PH increased (Read 158 times)
LISHAOFENG
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UASB effluent PH increased
Jun 10th, 2012, 3:25am  
we use Sodium hydroxide to control the PH of UASB influent water,the PH level we control was 5~7,but UASB effluent water PH increased to 9.5,the CH4 is still produced,what should i do to reduce the effluent water PH?
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Re: UASB effluent PH increased
Reply #1 - Jun 10th, 2012, 7:36am  
You could either add an acid to lower the effluent pH or try using less sodium hydroxide. Magnesium hydroxide could be dosed in place of sodium hydroxide which will add extra alkalinity, but you won't see the pH swings.


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LISHAOFENG
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Re: UASB effluent PH increased
Reply #2 - Jun 12th, 2012, 4:03am  
thank you !
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