Background: Wastewater is a singificant issue in food processing plants and city wastewater treatment plants. Oily dissolved air flotation (DAF) sludge, flotation sludge, lagoon sludge and biomass sludge are produced from wasterwater treatment. The oily sludge is a major issue in these plants, which causes environmental problem.
New Processes: We have developed the patented processes (2002, 2008 and 2014) to convert above oily sludge or grease into dry encapsulated fat products with high fat level, which add more value and form non-oily and free-flowing dry fat products.
#1) One process is to encapsulate above oily sludge or grease with the feed-grade ingredients (including grain meal) and use a dryer to produce the non-oily dry product with free-flowing property. Its typical analysis data are: fat 50-20%, protein 20-45% (depending on their mixing rates) and moisture 6%.
#2) Another process is to use a feed-grade protein ingredient to encapsulate above oily sludge or grease and use a dryer to produce the non-oily dry product with free-flowing property. Its analysis data are: fat 30%, protein 55% and moisture 6%.
Both products have high fat levels. The above encapsulated fat products have been manufactured. One of them has been commercialized for more than 8 years. Our product samples are available.
When a plant has above oily sludge or grease at 12 tons/day in solid basis, then the solid encapsulated fat product can add more than $2.1 millions/year.
Our patented processes convert above oily sludge or grease in wet form into the free-flowing and non-oily fat products in dry form and add more value.
The products are used as dry fat and protein ingredients for general animal feeds. For aquaculture feeds, the products have low gravity and float in water. Also the products have bypass function for dairy animals.
# 1: Dry DAF Fat
# 2: Dry Protein and
DAF Fat Product
We can help you by converting the oily sludge or grease into non-oily and free-flowing dry fat products with added value that generates incomes.