Background: Wastewater is a singificant issue in food processing plants and city wastewater treatment plants. Oily dissolved air flotation (DAF) skimming, lagoon sludge, decanter solids, biosolids, and biomass are produced from wasterwater treatments. The oily sludge materials are major issue in these plants, which cause environmental problem.
Rigel's Processes: We have developed the patented processes (2002, 2008 and 2015) to process oily sludge materials or decanter solids into the non-oily dry encapsulated products with high fat level, which add more value and form non-oily and free-flowing dry products.
#1) One process is to encapsulate oily sludge materials with a feed-grade ingredient and use a dryer to produce the non-oily dry product with free-flowing property. Its typical analysis is: fat 25-30%, protein 40-35%, carbohydrate (depending on raw materials) and moisture 6%.
#2) Another process is to use a feed-grade protein ingredient to encapsulate oily sludge materials and a dryer to produce the non-oily dry product with free-flowing property. Its typical analysis is: fat 30%, protein 55% and moisture 6%.
Manufacture: The products have high fat levels. The above encapsulated products have been manufactured in our production facilities. Our product samples are available. Also our production facilities are available for visit.
Our patented processes convert above oily sludge materials into the non-oily and free-flowing 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. For dairy animals, the products have bypass function.
#1: Non-oily dry DAF
#2: Non-oily dry DAF (fat and protein product)
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