400
A. Srivastava
Hence, it has resulted in a significant number of queries about the elementary
processes that occur within the system.
• In research and literature, it has been mentioned that advanced oxidation processes
are efficient for the degradation of ECs, but here too there is a major knowledge
gap related to the industrial development or scaling-up process. A limited number
of studies in this regard have been undertaken so far.
Most of the research till date is focused on industrial wastewater treatment processes. Unfortunately, neither water treatment plants (WTPs) nor STPs are designed
to specifically remove PPCPs using conventional treatment methods (Hu et al. 2015).
This may be due to the fact that no legislative limits exist for these micropollutants.
Hence, it is imperative to adopt some recently introduced advanced treatment methods such as advanced oxidation processes (AOPs), namely ozonation, photocatalysis,
ultraviolet (UV) treatment, etc., for removal of ECs. A comparison of the available
technologies can then be done to account for effective in situ treatment of these
contaminants.
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