Last Thursday we(our class) was on a field trip. In science and social studies we learned about water and now still are. We went to the field trip to see how they make the river water in Jakarta, that is very dirty, clean.
Step 1: They use a gate to capture the big garbage. They have to clean it every hour so it can capture the other garbage even better. When they wouldn't clean it at all then the garbage would just pile and the water cannot get through. That can cause flooding.
The reason why they do this is to stop the big garbage from coming to the water that they want to clean. I wonder how much garbage there is in that one hour.
Step 2: The water treatment plant oxygenates and adds minerals to the water. They do this to give the water oxygen. I am wondering why they do this.
Step 3: In this step they add alum. The dirt gathers together. I would like to know how the alum does that.
Step 4: Now they let the water sit for a while. The water sediments. That means that the clumps of dirt fall to the ground of the water.
Step 5: There is a layer of sand that is 1meter high. It filters the water even more. I was wondering how often they wash the filter.
1 comment:
Emma, you've done a pretty good job with this blog post. You have a pretty good idea of what happens at each step, plus you bring up some very interesting questions to ponder. I hope Ms. Marrello will go over these.
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