Monday, 13 August 2012

Problems with Fats, Oils and Greases in Packaged Effluent Treatment Plants for Restaurant Effluents

I've been faced recently with a problem which I looked into right back at the start of my career : Fats, Oils and Greases (FOGs) in catering establishment effluent.

Having cleaned out the historical contamination at the Indian restaurant site, we are seeing some evidence of fresh breakthrough of cooking oil onto the Titan biological treatment plant, despite previous sampling data suggesting very low FOG levels in effluent from the fat trap.

Titan units are quite intolerant of fats, oils, and greases, and consequently we are investigating ways to enhance the operation of the grease trap/oil water separator upstream of the unit by means of chemical dosing.

We are not proposing to use any of the proprietary systems which use enzymes or bugs to supposedly enhance oil removal, as our prior experience with such systems is not favourable. We have seen them used too often as an add-on proprietary product by inexpert system installers with no understanding of the root causes of problems, which might be why we have seen them cause far more problems than they have solved.

Other than that, I am spending my day tweaking tomorrow's course on effluent treatment in pesticides manufacture.

No comments: