At 9.15 a.m., we had a routine meeting with the operators from the boiler, chiller and WWTP. The purpose of the meeting is to update information and ensure the plant is always operated under normal and safe conditions.
At 9.45 a.m., I went to the WWTP control room and Desa was on shift. After having a quick conversation with him, however, I realized he did not know much about WWTP in detail, so I did observation around the WWTP to continue data collecting.
At 11.00 a.m., I began to sketch the PFD of WWTP using Microsoft Visio.
At 3.00 p.m., finally the boiler chargehand, Satiya gave me a brief explanation about WWTP. He said that to understand the operation and flows of WWTP, first and foremost, we have to understand the fundamental knowledge relating to WWTP. The purpose of constructing WWTP is to meet the environmental limits of final discharge for sustainability and the future.
There are primary and secondary treatments or biological and chemical methods in our plant. The biological method utilises bacteria whereas the chemical method uses chemical dosing for water treatment. I understood what he explained to me easily because I had studied water treatment for my group design project during the past study semester.
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