We went to water treatment plant at 8.oo am.It was the Sungai Petani and Pinang Tunggal Water Treatment Plant. The activity was a surprise for us as Mr. Silva, the PPKP for KMAM told us that he had already take special permission for us to enter water treatment plant. We could see how the river water was processed and become the clean water that comes out from our house pipe.
Firstly the river water was passed through a screen to trap the branches and large objects. Then the deep seated water with sand are sucked up by a pipe and poured to a small drain-like-connections in order to protect the sucking pump that connects to the treatment pond. At the pond, the water undergone aeration in order to oxidized the ferum, magnesium, and other metals so that it will not dissolved into the water. Through this process, the carbon dioxide and hydrogen sulfate will be released into the air.
Then the water went into flocculation pond. Aluminium sulfate or Poly Aluminium Chloride (PAC) is used to coagulate the small suspension of solids and colloidal materials. This coagulated to form Floc.
Then the water that is free of floc will be channelled to sedimentation tank. The retention time is 2 hours. The water is then percolated through a bed of a fine sand to remove fine suspended solids and colloidal matter.
After filtration, the water is then neutralised with calcium hydroxide to increase the pH of the water as it was acidified before by the PAC. The water is then added with sodium silicoflouride for the purpose of producing healthy teeth among the drinker. Chlorination is the next step in which chlorine is added into the water to kill residual bacteria. The water then is stored in clear water tank and channelled out to the household and another pipe channeled back to them for their usage (mixing chemicals).
Firstly the river water was passed through a screen to trap the branches and large objects. Then the deep seated water with sand are sucked up by a pipe and poured to a small drain-like-connections in order to protect the sucking pump that connects to the treatment pond. At the pond, the water undergone aeration in order to oxidized the ferum, magnesium, and other metals so that it will not dissolved into the water. Through this process, the carbon dioxide and hydrogen sulfate will be released into the air.
Then the water went into flocculation pond. Aluminium sulfate or Poly Aluminium Chloride (PAC) is used to coagulate the small suspension of solids and colloidal materials. This coagulated to form Floc.
Then the water that is free of floc will be channelled to sedimentation tank. The retention time is 2 hours. The water is then percolated through a bed of a fine sand to remove fine suspended solids and colloidal matter.
After filtration, the water is then neutralised with calcium hydroxide to increase the pH of the water as it was acidified before by the PAC. The water is then added with sodium silicoflouride for the purpose of producing healthy teeth among the drinker. Chlorination is the next step in which chlorine is added into the water to kill residual bacteria. The water then is stored in clear water tank and channelled out to the household and another pipe channeled back to them for their usage (mixing chemicals).
Sorry for the simplicity because the blogger of this post is busy like an ant. (If any questions please do ask in the communication box. thanks.)
1 comment:
thanks ...for inform..
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Rosey
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