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Advanced Treatment Technology and Strategy 211

Nonfunctional
Primary biological Discharge
treatment to CETP
treatment

AOP

Figure 4.16 AOP as an alternate to conventional treatment process.

4.7.3 Advanced Oxidation Process as a Buffer for Biological
Treatment
A single biorefractory wastewater stream can destabilize the entire treat-
ment process for days. It can be stated that 80% of wastewater treatment
issues are due to 20% of wastewater streams. Present technologies are unable
to address such streams separately. A rethinking concerning the form of
application (see Figures 4.17 and 4.18) and using the following aspects
can be highly useful.
• Several AOPs can be combined for treatment of each specific stream.
• AOPs can be installed at the point of wastewater generation.
• Stream-specific AOPs can improve the performance of biological treat-
ment systems.

Stream A Stream B
(Bio-treatable) (with solvents)

AOP

Primary Biological Discharge
treatment treatment

AOP

Stream C
(with phenolic compounds)
Figure 4.17 AOP as a buffer to conventional technology.