MLSS is made up chiefly of ...

Published by

MLSS is made up chiefly of microorganisms so adding cow dung may result in an increase in MLSS if the microorganisms can quickly adapt to this type of food source and multiply effectively.  However this may not be what you want if the microorganisms that multiply are not the ones that are specifically suited to the wastes from the vegetable oil industry you are trying to treat.  Rather try to find another similar industry where they are treating their wastes and collect some of their waste sludge.