Process for mixing treatment additives to contaminated liquids

A process for mixing treatment additives to contaminated liquid such as waste water, comprising the steps of:

• determining the identify of one or more treatment additives and the amount of each treatment additive needed to treat the contaminated liquid;
• determining a mixing energy requirement of the contaminated liquid and the selected treatment additive(s) by mixing the treatment additive(s) over a range of mixing speeds and time, and measuring turbidity to determine the mixing time and speed which results in the lowest turbidity, wherein a low mixing energy requirement requires a lower mixing time and mixing speed than a higher mixing energy requirement;
• and
• directing the contaminated liquid and the selected treatment additive(s) into a mixing system including at least one hydrocyclone having an inlet aspect ratio selected based upon the mixing energy requirement determination, and a barrel length/diameter selected based upon the mixing energy requirement determination.

A process for mixing treatment additives to contaminated liquid such as waste water, comprising the steps of:

• determining the identify of one or more treatment additives and the amount of each treatment additive needed to treat the contaminated liquid by mixing various treatment additives to a sample of the contaminated liquid over time and determining the effective additives and the amount of each additive necessary to treat a given volume of contaminated liquid;
• determining a mixing energy requirement of the contaminated liquid and the selected treatment additive(s) by mixing the treatment additive(s) over a range of mixing speeds and time, and measuring turbidity to determine the mixing speed and time which results in the lowest turbidity, wherein a low mixing energy requirement requires a lower mixing time and mixing speed than a higher mixing energy requirement;
• and
• directing the contaminated liquid and the selected treatment additive(s) into a mixing system including at least one hydrocyclone having an inlet aspect ratio selected based upon the mixing energy requirement determination, and a barrel length/diameter selected based upon the mixing energy requirement determination;
• wherein the cross-sectional area of the inlet is increased to correspond to a lower mixing energy requirement, and decreased to correspond to a higher mixing energy requirement;
• and
• wherein the diameter or the length of the hydrocyclone barrel is increased to increase the mixing time to correspond to a higher mixing energy requirement, and the length of the barrel is decreased to decrease the mixing time to correspond to a lower mixing energy requirement.