A method of treating wastewater to increase effluent volatile fatty acid content
consisting of providing wastewater to a primary treatment vessel and adding a select
quantity of a chemical, typically an aluminum or iron salt, to the wastewater,
enhancing the separation of organic matter. Separated organic matter is then removed
from the chemically treated wastewater forming a primary sludge and a primary effluent.
A portion of the primary sludge is fermented to form a volatile fatty acid rich
liquor. The volatile fatty acid rich liquor may then be used with the primary effluent,
directed to a bioreactor, thereby forming a volatile fatty acid enriched bioreactor
feed. The volatile fatty acid enriched influent may be further treated through
known biological phosphorous and nitrogen removal methods.