At 9.15 a.m., we had a short meeting with the operators.
At 10.00 a.m., I did observation in the WWTP and installation sites. The mechanical aerator of the second aeration was not running because one of the bolts to support the aerator was broken.
At 11.00 a.m., Tee gave me a new 3M safety helmet (white pin-lock suspension) to replace the expired hard helmet which I used currently. I learnt and followed the manual instructions to assemble the new safety helmet.
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| New safety helmet |
At 2.00 p.m., Tee had signed and returned my weekly log sheets of Week 1 - 5 to me with comments. He told me that in the following weeks (at the beginning of the next year 2017), we would be busy due to the arrival of a new DAF unit and the commissioning procedure of DPRS.
At 2.45 p.m., Jaclyn and I went to the WWTP control room. She showed me the
daily recording which contains flowrate and water parameters such as pH, COD,
MLSS etc. She explained the purpose of data recording and shared some
information.
For example, the colour of the DAF influent (measured in terms of American Dye Manufacturers' Institute or ADMI) has to be recorded, but not the colour of the influent of other balance tanks. This is because the colour of the final discharge (to the environment) is also one of the parameters to be monitored. Since DAF influent mainly consists of wastewater from coffee production and is relatively darker than the others, it is necessary to monitor the colour of DAF influent in the early stage.
At 3.15 p.m., we observed
the contractors to replace a new bolt. The mechanical aerator of the second
aeration tank was locked by LOTO to prevent any accident. They also greased the
joints of the metal support of this aerator to reduce the noise and ensure a
prolonged operation of the aerator.
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