What can be a consequence of high levels of TSS in wastewater?

High levels of total suspended solids (TSS) in wastewater can significantly decrease the efficiency of treatment processes. When TSS concentrations are elevated, they can create a range of operational challenges in wastewater treatment facilities. For instance, high TSS can lead to increased clogging of filters and membranes, making it harder for the system to treat the water effectively. Additionally, solids in the wastewater can interfere with biological processes, reducing the ability of microorganisms to operate optimally. This not only affects the treatment efficiency but can also lead to greater energy requirements and operational costs as additional measures must be taken to achieve compliance with discharge standards.

While other options may seem plausible, elevated levels of TSS generally do not enhance biological activity or purification capabilities. In fact, they can hinder processes meant to purify the water, leading to complications in meeting regulatory criteria. Thus, a decrease in treatment efficiency is a direct and critical consequence of high TSS levels in wastewater management.