$(15$ marks$)$ A processing industry generates an organic wastewater stream of $200k\frac{L}{?}$ day and it is to be treated on site and the effluent discharged into domestic wastewater system for further treatment. The major compositions of the wastewater stream are given below. Design a suitable treatment process for the onsite treatment. Present your answer in $($a$)$ a schematic process flow diagram, which shows the flow rates and BOD values of all key process streams, and $($b$)$ for each key processing unit in your design, briefly explain the reasons for its inclusion in the treatment process. Your design must be theoretically sound and practically feasible.

$\backslash$table$[[$BOD $(m\frac{g}{L}),$Suspended solids $(m\frac{g}{L}),pH$