Calculating dissolved water to work out BOD in a waste water treatment activated sludge design?

[AJ95]

Hi everyone,

I'm currently designing a waste water treatment of a plant that manufactures interferons. This is the last process I need to design and I am done! yay.

I have decided to use an activated sludge system and I need to work out the Biochemical Oxygen Demand levels in the influent and efluent streams.

I have several waste water streams coming out of various units throughout the system which I will be combing into one stream that contains loads of components such as:Yeast extract, Pepton, Glycerol, Phosphoric acid, Calcium Sulphate, Ammonium Sulphate, Sodium Azide and various others.

The equation I'm planning to use for the BOD is BOD=(Di-Df)/P . I'm having trouble calculating the dissolved oxygen for the organic matter substrates in the influent stream.

Also if anyone known where I could find any similar designs of this that have been done please let me know.

Thanks a lot!

 

[bimr]

Would not be concerned with the dissolved oxygen in the organic matter.

You should be able to find information in a text book for organic material in terms of BOD in mg/L.

You might also obtain text books with titles such as Liquid Wastes of Industry which should provide examples. The best source of information will be another facility that is producing these materials.