Volume reduction of wastewater from a plastics manufacturing plant can be primarily achieved by which method?

Volume reduction of wastewater from a plastics manufacturing plant can primarily be achieved through evaporation. This method involves the process of converting liquid water into vapor, effectively removing water from the wastewater stream. As the water evaporates, the concentration of contaminants increases, reducing the overall volume of the waste.

Evaporation is particularly effective in situations where the wastewater has high levels of water content and lower concentrations of solids or other materials that must be treated. This can significantly lower disposal costs and the amount of material that requires further treatment.

Although options such as filtration, digestion, and recycling can also contribute to waste management strategies, they serve different purposes. Filtration generally removes solids from liquid rather than reducing the volume of the liquid itself. Digestion breaks down organic matter biologically but does not necessarily lead to a major reduction in total volume. Recycling can certainly reduce the generation of wastewater in the first place, but it does not directly reduce the volume of wastewater that has already been produced. Thus, evaporation is the most direct and effective method for achieving significant volume reduction in this context.