Cumulative toxicity of chemicals

[bigsteve80]

Can anyone point me to a location where I can get information on the cumulative toxicity of hydrocarbons on the bacteria in my bio-ox? I am looking at accepting a new stream; 2500 ppm methanol, 2960 ppm ethanol, 1050 propanol, 1340 butanol, 436 pentanol, 29 ppm C10H22, 24 ppm C11H24, 2.6 ppm MPK and 0.64 ppb MEK. From what I've found, each individual component should be fine; I'm worried about the combination of them all. Thanks!

 

[ch81pc]

Your best way to find out is to take a pilot scale sample of MLSS from your bio-ox and run it for a couple of days on your normal settled sewage spiked with the mix of hydrocarbon you mention. Run a second control vessel along side using your normal settled sewage.