LACTHOSA HONDURAS…Proposal for Sula Cheese Factory

This is a large food processor...one aspect is Dairy Processing.

They currently use a dry power Bacteria product that is failing to meet their goals on Odor and Effluent Discharge on COD and TSS.

System is an Aerated Tank...holding 400,000 Gallons of influent...which then passes through 3 BioReactors. Flow is 7,250 Gallons per hour...or a little over two days system retention time.

Influent is approximately PPM: Effluent is approximately PPM:

Their goal is to reduce the COD to below 200...eliminate odor...and reduce TSS/Sludge...hoping for lower turbidity in final effluent. A normal treatment, based on volume, will be:

• First Week 2-4 Week Maintenance Per Week
• Standard 6 gal. 2x/wk 3gal. 2x/wk 1 gal. 2x/wk

There is sludge in the Aeration Tank...which will raise the COD during initial treatment, so they must understand that effective results will take several months, as AquaClean reduces the sludge build up. As discussed, they must adjust the pH before treatment from 4 to 7 range, and should monitor D.O. as a possible limiting factor.

Obviously there is a large load of FOGs, which they plan on using a skimmer to remove before treatment, but this is not yet installed. We can start before this is operational, but again, this will hamper final results until fully installed.

While they would like to start with AquaClean now...and see the results before adding any further equipment…this will require monitoring to establish levels of success, that will improve as Skimmers and proper pH Adjustments are added to the system. Therefore, we should anticipate a three to four month process, and then review.

In the future, it is a good idea to remove as much of the colloidal FOG as possible before the aeration basin using a skimmer of DAF, but they can be expensive to install and operate. Disposal can also be an issue, but there are options for rendering the FOG into useful products. If we can enhance the degradation to a point where we can degrade all of the FOG, they may be able to forego pretreatment for FOG removal, but even if they have to install a pretreatment process, they can still benefit from the product use.

Ammonia might be an issue, as we don’t believe that they are nitrifying well, but it will be possible to correct with ACF-32. Most of the removal of ammonia right now is due to heterotrophic uptake, and we should be able to handle any issue here, but again it should be monitored.